Merge "Define unit and integration test suites"
authorjenkins-bot <jenkins-bot@gerrit.wikimedia.org>
Fri, 28 Jun 2019 20:10:10 +0000 (20:10 +0000)
committerGerrit Code Review <gerrit@wikimedia.org>
Fri, 28 Jun 2019 20:10:10 +0000 (20:10 +0000)
19 files changed:
.gitattributes
.gitignore
.phpcs.xml
composer.json
includes/DefaultSettings.php
includes/Setup.php
maintenance/findHooks.php
phpunit.xml.dist [new file with mode: 0644]
tests/common/TestsAutoLoader.php
tests/phpunit/MediaWikiIntegrationTestCase.php [new file with mode: 0644]
tests/phpunit/MediaWikiTestCase.php [deleted file]
tests/phpunit/MediaWikiUnitTestCase.php
tests/phpunit/bootstrap.maintenance.php [new file with mode: 0644]
tests/phpunit/bootstrap.php
tests/phpunit/includes/db/DatabaseSqliteTest.php [deleted file]
tests/phpunit/integration/includes/db/DatabaseSqliteTest.php [new file with mode: 0644]
tests/phpunit/suite.xml
tests/phpunit/unit-tests.xml [deleted file]
tests/phpunit/unit/initUnitTests.php [deleted file]

index 81b7a33..145caeb 100644 (file)
@@ -10,4 +10,4 @@ package.json export-ignore
 README.mediawiki export-ignore
 Gemfile* export-ignore
 vendor/pear/net_smtp/README.rst export-ignore
-
+phpunit.xml.dist export-ignore
index 8cacb1e..a76270e 100644 (file)
@@ -52,6 +52,7 @@ npm-debug.log
 node_modules/
 /resources/lib/.foreign
 /tests/phpunit/phpunit.phar
+phpunit.xml
 /tests/selenium/log
 .eslintcache
 
index 9ccf565..76234a2 100644 (file)
                <!-- Skip violations in some tests for now -->
                <exclude-pattern>*/tests/phpunit/includes/GlobalFunctions/*\.php</exclude-pattern>
                <exclude-pattern>*/tests/phpunit/maintenance/*\.php</exclude-pattern>
+               <exclude-pattern>*/tests/phpunit/integration/includes/GlobalFunctions/*\.php</exclude-pattern>
        </rule>
 
        <rule ref="Generic.Files.OneObjectStructurePerFile.MultipleFound">
index 428c1a8..df51621 100644 (file)
                "test": [
                        "composer lint",
                        "composer phpcs"
-               ]
+               ],
+               "phpunit": "vendor/bin/phpunit",
+               "phpunit:unit": "vendor/bin/phpunit --colors=always --testsuite=unit",
+               "phpunit:integration": "vendor/bin/phpunit --colors=always --testsuite=integration",
+               "phpunit:coverage": "php -d zend_extensions=xdebug.so vendor/bin/phpunit --testsuite=unit --exclude-group Dump,Broken,ParserFuzz,Stub"
        },
        "config": {
                "optimize-autoloader": true,
index 10155f6..a32af36 100644 (file)
@@ -7425,7 +7425,7 @@ $wgSpecialPages = [];
 /**
  * Array mapping class names to filenames, for autoloading.
  */
-$wgAutoloadClasses = [];
+$wgAutoloadClasses = $wgAutoloadClasses ?? [];
 
 /**
  * Switch controlling legacy case-insensitive classloading.
index 54e6795..641f1f9 100644 (file)
@@ -807,7 +807,9 @@ if ( $wgRequest->getCookie( 'UseDC', '' ) === 'master' ) {
 
 // Useful debug output
 if ( $wgCommandLineMode ) {
-       wfDebug( "\n\nStart command line script $self\n" );
+       if ( isset( $self ) ) {
+               wfDebug( "\n\nStart command line script $self\n" );
+       }
 } else {
        $debug = "\n\nStart request {$wgRequest->getMethod()} {$wgRequest->getRequestURL()}\n";
 
index a902397..6d5dda1 100644 (file)
@@ -82,7 +82,7 @@ class FindHooks extends Maintenance {
                        "$IP/",
                ];
                $extraFiles = [
-                       "$IP/tests/phpunit/MediaWikiTestCase.php",
+                       "$IP/tests/phpunit/MediaWikiIntegrationTestCase.php",
                ];
 
                foreach ( $recurseDirs as $dir ) {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644 (file)
index 0000000..e160f3b
--- /dev/null
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit bootstrap="tests/phpunit/bootstrap.php"
+                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
+
+                colors="true"
+                backupGlobals="false"
+                convertErrorsToExceptions="true"
+                convertNoticesToExceptions="true"
+                convertWarningsToExceptions="true"
+                forceCoversAnnotation="true"
+                stopOnFailure="false"
+                timeoutForSmallTests="10"
+                timeoutForMediumTests="30"
+                timeoutForLargeTests="60"
+                beStrictAboutTestsThatDoNotTestAnything="true"
+                beStrictAboutOutputDuringTests="true"
+                beStrictAboutTestSize="true"
+                verbose="false">
+       <php>
+               <ini name="memory_limit" value="512M" />
+       </php>
+       <testsuites>
+               <testsuite name="unit">
+                       <directory>tests/phpunit/unit</directory>
+               </testsuite>
+               <testsuite name="integration">
+                       <directory>tests/phpunit/integration</directory>
+               </testsuite>
+       </testsuites>
+       <groups>
+               <exclude>
+                       <group>Broken</group>
+               </exclude>
+       </groups>
+       <filter>
+               <whitelist addUncoveredFilesFromWhitelist="true">
+                       <directory suffix=".php">includes</directory>
+                       <directory suffix=".php">languages</directory>
+                       <directory suffix=".php">maintenance</directory>
+                       <exclude>
+                               <directory suffix=".php">languages/messages</directory>
+                               <file>languages/data/normalize-ar.php</file>
+                               <file>languages/data/normalize-ml.php</file>
+                       </exclude>
+               </whitelist>
+       </filter>
+       <listeners>
+               <listener class="JohnKary\PHPUnit\Listener\SpeedTrapListener">
+                       <arguments>
+                               <array>
+                                       <element key="slowThreshold">
+                                               <integer>50</integer>
+                                       </element>
+                                       <element key="reportLength">
+                                               <integer>50</integer>
+                                       </element>
+                               </array>
+                       </arguments>
+               </listener>
+       </listeners>
+</phpunit>
index 8b6c6d5..e1dde22 100644 (file)
@@ -59,8 +59,9 @@ $wgAutoloadClasses += [
        'MediaWikiPHPUnitCommand' => "$testDir/phpunit/MediaWikiPHPUnitCommand.php",
        'MediaWikiPHPUnitResultPrinter' => "$testDir/phpunit/MediaWikiPHPUnitResultPrinter.php",
        'MediaWikiPHPUnitTestListener' => "$testDir/phpunit/MediaWikiPHPUnitTestListener.php",
-       'MediaWikiTestCase' => "$testDir/phpunit/MediaWikiTestCase.php",
+       'MediaWikiTestCase' => "$testDir/phpunit/MediaWikiIntegrationTestCase.php",
        'MediaWikiUnitTestCase' => "$testDir/phpunit/MediaWikiUnitTestCase.php",
+       'MediaWikiIntegrationTestCase' => "$testDir/phpunit/MediaWikiIntegrationTestCase.php",
        'MediaWikiTestResult' => "$testDir/phpunit/MediaWikiTestResult.php",
        'MediaWikiTestRunner' => "$testDir/phpunit/MediaWikiTestRunner.php",
        'PHPUnit4And6Compat' => "$testDir/phpunit/PHPUnit4And6Compat.php",
diff --git a/tests/phpunit/MediaWikiIntegrationTestCase.php b/tests/phpunit/MediaWikiIntegrationTestCase.php
new file mode 100644 (file)
index 0000000..999ba47
--- /dev/null
@@ -0,0 +1,2546 @@
+<?php
+
+use MediaWiki\Logger\LegacySpi;
+use MediaWiki\Logger\LoggerFactory;
+use MediaWiki\Logger\MonologSpi;
+use MediaWiki\Logger\LogCapturingSpi;
+use MediaWiki\MediaWikiServices;
+use Psr\Log\LoggerInterface;
+use Wikimedia\Rdbms\IDatabase;
+use Wikimedia\Rdbms\IMaintainableDatabase;
+use Wikimedia\Rdbms\Database;
+use Wikimedia\TestingAccessWrapper;
+
+/**
+ * @since 1.18
+ *
+ * Extend this class if you are testing classes which access global variables, methods, services
+ * or a storage backend.
+ *
+ * Consider using MediaWikiUnitTestCase and mocking dependencies if your code uses dependency
+ * injection and does not access any globals.
+ */
+abstract class MediaWikiIntegrationTestCase extends PHPUnit\Framework\TestCase {
+
+       use MediaWikiCoversValidator;
+       use PHPUnit4And6Compat;
+
+       /**
+        * The original service locator. This is overridden during setUp().
+        *
+        * @var MediaWikiServices|null
+        */
+       private static $originalServices;
+
+       /**
+        * The local service locator, created during setUp().
+        * @var MediaWikiServices
+        */
+       private $localServices;
+
+       /**
+        * $called tracks whether the setUp and tearDown method has been called.
+        * class extending MediaWikiTestCase usually override setUp and tearDown
+        * but forget to call the parent.
+        *
+        * The array format takes a method name as key and anything as a value.
+        * By asserting the key exist, we know the child class has called the
+        * parent.
+        *
+        * This property must be private, we do not want child to override it,
+        * they should call the appropriate parent method instead.
+        */
+       private $called = [];
+
+       /**
+        * @var TestUser[]
+        * @since 1.20
+        */
+       public static $users;
+
+       /**
+        * Primary database
+        *
+        * @var Database
+        * @since 1.18
+        */
+       protected $db;
+
+       /**
+        * @var array
+        * @since 1.19
+        */
+       protected $tablesUsed = []; // tables with data
+
+       private static $useTemporaryTables = true;
+       private static $reuseDB = false;
+       private static $dbSetup = false;
+       private static $oldTablePrefix = '';
+
+       /**
+        * Original value of PHP's error_reporting setting.
+        *
+        * @var int
+        */
+       private $phpErrorLevel;
+
+       /**
+        * Holds the paths of temporary files/directories created through getNewTempFile,
+        * and getNewTempDirectory
+        *
+        * @var array
+        */
+       private $tmpFiles = [];
+
+       /**
+        * Holds original values of MediaWiki configuration settings
+        * to be restored in tearDown().
+        * See also setMwGlobals().
+        * @var array
+        */
+       private $mwGlobals = [];
+
+       /**
+        * Holds list of MediaWiki configuration settings to be unset in tearDown().
+        * See also setMwGlobals().
+        * @var array
+        */
+       private $mwGlobalsToUnset = [];
+
+       /**
+        * Holds original values of ini settings to be restored
+        * in tearDown().
+        * @see setIniSettings()
+        * @var array
+        */
+       private $iniSettings = [];
+
+       /**
+        * Holds original loggers which have been replaced by setLogger()
+        * @var LoggerInterface[]
+        */
+       private $loggers = [];
+
+       /**
+        * The CLI arguments passed through from phpunit.php
+        * @var array
+        */
+       private $cliArgs = [];
+
+       /**
+        * Holds a list of services that were overridden with setService().  Used for printing an error
+        * if overrideMwServices() overrides a service that was previously set.
+        * @var string[]
+        */
+       private $overriddenServices = [];
+
+       /**
+        * Table name prefixes. Oracle likes it shorter.
+        */
+       const DB_PREFIX = 'unittest_';
+       const ORA_DB_PREFIX = 'ut_';
+
+       /**
+        * @var array
+        * @since 1.18
+        */
+       protected $supportedDBs = [
+               'mysql',
+               'sqlite',
+               'postgres',
+               'oracle'
+       ];
+
+       public function __construct( $name = null, array $data = [], $dataName = '' ) {
+               parent::__construct( $name, $data, $dataName );
+
+               $this->backupGlobals = false;
+               $this->backupStaticAttributes = false;
+       }
+
+       public function __destruct() {
+               // Complain if self::setUp() was called, but not self::tearDown()
+               // $this->called['setUp'] will be checked by self::testMediaWikiTestCaseParentSetupCalled()
+               if ( isset( $this->called['setUp'] ) && !isset( $this->called['tearDown'] ) ) {
+                       throw new MWException( static::class . "::tearDown() must call parent::tearDown()" );
+               }
+       }
+
+       private static function initializeForStandardPhpunitEntrypointIfNeeded() {
+               if ( function_exists( 'wfRequireOnceInGlobalScope' ) ) {
+                       $IP = realpath( __DIR__ . '/../..' );
+                       wfRequireOnceInGlobalScope( "$IP/includes/Defines.php" );
+                       wfRequireOnceInGlobalScope( "$IP/includes/DefaultSettings.php" );
+                       wfRequireOnceInGlobalScope( "$IP/includes/GlobalFunctions.php" );
+                       wfRequireOnceInGlobalScope( "$IP/includes/Setup.php" );
+                       wfRequireOnceInGlobalScope( "$IP/tests/common/TestsAutoLoader.php" );
+                       TestSetup::applyInitialConfig();
+               }
+       }
+
+       public static function setUpBeforeClass() {
+               parent::setUpBeforeClass();
+               \PHPUnit\Framework\Assert::assertFileExists( 'LocalSettings.php' );
+               self::initializeForStandardPhpunitEntrypointIfNeeded();
+
+               // Get the original service locator
+               if ( !self::$originalServices ) {
+                       self::$originalServices = MediaWikiServices::getInstance();
+               }
+       }
+
+       /**
+        * Convenience method for getting an immutable test user
+        *
+        * @since 1.28
+        *
+        * @param string|string[] $groups Groups the test user should be in.
+        * @return TestUser
+        */
+       public static function getTestUser( $groups = [] ) {
+               return TestUserRegistry::getImmutableTestUser( $groups );
+       }
+
+       /**
+        * Convenience method for getting a mutable test user
+        *
+        * @since 1.28
+        *
+        * @param string|string[] $groups Groups the test user should be added in.
+        * @return TestUser
+        */
+       public static function getMutableTestUser( $groups = [] ) {
+               return TestUserRegistry::getMutableTestUser( __CLASS__, $groups );
+       }
+
+       /**
+        * Convenience method for getting an immutable admin test user
+        *
+        * @since 1.28
+        *
+        * @param string[] $groups Groups the test user should be added to.
+        * @return TestUser
+        */
+       public static function getTestSysop() {
+               return self::getTestUser( [ 'sysop', 'bureaucrat' ] );
+       }
+
+       /**
+        * Returns a WikiPage representing an existing page.
+        *
+        * @since 1.32
+        *
+        * @param Title|string|null $title
+        * @return WikiPage
+        * @throws MWException If this test cases's needsDB() method doesn't return true.
+        *         Test cases can use "@group Database" to enable database test support,
+        *         or list the tables under testing in $this->tablesUsed, or override the
+        *         needsDB() method.
+        */
+       protected function getExistingTestPage( $title = null ) {
+               if ( !$this->needsDB() ) {
+                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
+                               ' method should return true. Use @group Database or $this->tablesUsed.' );
+               }
+
+               $title = ( $title === null ) ? 'UTPage' : $title;
+               $title = is_string( $title ) ? Title::newFromText( $title ) : $title;
+               $page = WikiPage::factory( $title );
+
+               if ( !$page->exists() ) {
+                       $user = self::getTestSysop()->getUser();
+                       $page->doEditContent(
+                               new WikitextContent( 'UTContent' ),
+                               'UTPageSummary',
+                               EDIT_NEW | EDIT_SUPPRESS_RC,
+                               false,
+                               $user
+                       );
+               }
+
+               return $page;
+       }
+
+       /**
+        * Returns a WikiPage representing a non-existing page.
+        *
+        * @since 1.32
+        *
+        * @param Title|string|null $title
+        * @return WikiPage
+        * @throws MWException If this test cases's needsDB() method doesn't return true.
+        *         Test cases can use "@group Database" to enable database test support,
+        *         or list the tables under testing in $this->tablesUsed, or override the
+        *         needsDB() method.
+        */
+       protected function getNonexistingTestPage( $title = null ) {
+               if ( !$this->needsDB() ) {
+                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
+                               ' method should return true. Use @group Database or $this->tablesUsed.' );
+               }
+
+               $title = ( $title === null ) ? 'UTPage-' . rand( 0, 100000 ) : $title;
+               $title = is_string( $title ) ? Title::newFromText( $title ) : $title;
+               $page = WikiPage::factory( $title );
+
+               if ( $page->exists() ) {
+                       $page->doDeleteArticle( 'Testing' );
+               }
+
+               return $page;
+       }
+
+       /**
+        * @deprecated since 1.32
+        */
+       public static function prepareServices( Config $bootstrapConfig ) {
+       }
+
+       /**
+        * Create a config suitable for testing, based on a base config, default overrides,
+        * and custom overrides.
+        *
+        * @param Config|null $baseConfig
+        * @param Config|null $customOverrides
+        *
+        * @return Config
+        */
+       private static function makeTestConfig(
+               Config $baseConfig = null,
+               Config $customOverrides = null
+       ) {
+               $defaultOverrides = new HashConfig();
+
+               if ( !$baseConfig ) {
+                       $baseConfig = self::$originalServices->getBootstrapConfig();
+               }
+
+               /* Some functions require some kind of caching, and will end up using the db,
+                * which we can't allow, as that would open a new connection for mysql.
+                * Replace with a HashBag. They would not be going to persist anyway.
+                */
+               $hashCache = [ 'class' => HashBagOStuff::class, 'reportDupes' => false ];
+               $objectCaches = [
+                               CACHE_DB => $hashCache,
+                               CACHE_ACCEL => $hashCache,
+                               CACHE_MEMCACHED => $hashCache,
+                               'apc' => $hashCache,
+                               'apcu' => $hashCache,
+                               'wincache' => $hashCache,
+                       ] + $baseConfig->get( 'ObjectCaches' );
+
+               $defaultOverrides->set( 'ObjectCaches', $objectCaches );
+               $defaultOverrides->set( 'MainCacheType', CACHE_NONE );
+               $defaultOverrides->set( 'JobTypeConf', [ 'default' => [ 'class' => JobQueueMemory::class ] ] );
+
+               // Use a fast hash algorithm to hash passwords.
+               $defaultOverrides->set( 'PasswordDefault', 'A' );
+
+               $testConfig = $customOverrides
+                       ? new MultiConfig( [ $customOverrides, $defaultOverrides, $baseConfig ] )
+                       : new MultiConfig( [ $defaultOverrides, $baseConfig ] );
+
+               return $testConfig;
+       }
+
+       /**
+        * @param ConfigFactory $oldFactory
+        * @param Config[] $configurations
+        *
+        * @return Closure
+        */
+       private static function makeTestConfigFactoryInstantiator(
+               ConfigFactory $oldFactory,
+               array $configurations
+       ) {
+               return function ( MediaWikiServices $services ) use ( $oldFactory, $configurations ) {
+                       $factory = new ConfigFactory();
+
+                       // clone configurations from $oldFactory that are not overwritten by $configurations
+                       $namesToClone = array_diff(
+                               $oldFactory->getConfigNames(),
+                               array_keys( $configurations )
+                       );
+
+                       foreach ( $namesToClone as $name ) {
+                               $factory->register( $name, $oldFactory->makeConfig( $name ) );
+                       }
+
+                       foreach ( $configurations as $name => $config ) {
+                               $factory->register( $name, $config );
+                       }
+
+                       return $factory;
+               };
+       }
+
+       /**
+        * Resets some non-service singleton instances and other static caches. It's not necessary to
+        * reset services here.
+        */
+       public static function resetNonServiceCaches() {
+               global $wgRequest, $wgJobClasses;
+
+               User::resetGetDefaultOptionsForTestsOnly();
+               foreach ( $wgJobClasses as $type => $class ) {
+                       JobQueueGroup::singleton()->get( $type )->delete();
+               }
+               JobQueueGroup::destroySingletons();
+
+               ObjectCache::clear();
+               FileBackendGroup::destroySingleton();
+               DeferredUpdates::clearPendingUpdates();
+
+               // TODO: move global state into MediaWikiServices
+               RequestContext::resetMain();
+               if ( session_id() !== '' ) {
+                       session_write_close();
+                       session_id( '' );
+               }
+
+               $wgRequest = new FauxRequest();
+               MediaWiki\Session\SessionManager::resetCache();
+       }
+
+       public function run( PHPUnit_Framework_TestResult $result = null ) {
+               if ( $result instanceof MediaWikiTestResult ) {
+                       $this->cliArgs = $result->getMediaWikiCliArgs();
+               }
+               $this->overrideMwServices();
+
+               if ( $this->needsDB() && !$this->isTestInDatabaseGroup() ) {
+                       throw new Exception(
+                               get_class( $this ) . ' apparently needsDB but is not in the Database group'
+                       );
+               }
+
+               $needsResetDB = false;
+               if ( !self::$dbSetup || $this->needsDB() ) {
+                       // set up a DB connection for this test to use
+
+                       self::$useTemporaryTables = !$this->getCliArg( 'use-normal-tables' );
+                       self::$reuseDB = $this->getCliArg( 'reuse-db' );
+
+                       $lb = MediaWikiServices::getInstance()->getDBLoadBalancer();
+                       $this->db = $lb->getConnection( DB_MASTER );
+
+                       $this->checkDbIsSupported();
+
+                       if ( !self::$dbSetup ) {
+                               $this->setupAllTestDBs();
+                               $this->addCoreDBData();
+                       }
+
+                       // TODO: the DB setup should be done in setUpBeforeClass(), so the test DB
+                       // is available in subclass's setUpBeforeClass() and setUp() methods.
+                       // This would also remove the need for the HACK that is oncePerClass().
+                       if ( $this->oncePerClass() ) {
+                               $this->setUpSchema( $this->db );
+                               $this->resetDB( $this->db, $this->tablesUsed );
+                               $this->addDBDataOnce();
+                       }
+
+                       $this->addDBData();
+                       $needsResetDB = true;
+               }
+
+               parent::run( $result );
+
+               // We don't mind if we override already-overridden services during cleanup
+               $this->overriddenServices = [];
+
+               if ( $needsResetDB ) {
+                       $this->resetDB( $this->db, $this->tablesUsed );
+               }
+
+               self::restoreMwServices();
+               $this->localServices = null;
+       }
+
+       /**
+        * @return bool
+        */
+       private function oncePerClass() {
+               // Remember current test class in the database connection,
+               // so we know when we need to run addData.
+
+               $class = static::class;
+
+               $first = !isset( $this->db->_hasDataForTestClass )
+                       || $this->db->_hasDataForTestClass !== $class;
+
+               $this->db->_hasDataForTestClass = $class;
+               return $first;
+       }
+
+       /**
+        * @since 1.21
+        *
+        * @return bool
+        */
+       public function usesTemporaryTables() {
+               return self::$useTemporaryTables;
+       }
+
+       /**
+        * Obtains a new temporary file name
+        *
+        * The obtained filename is enlisted to be removed upon tearDown
+        *
+        * @since 1.20
+        *
+        * @return string Absolute name of the temporary file
+        */
+       protected function getNewTempFile() {
+               $fileName = tempnam(
+                       wfTempDir(),
+                       // Avoid backslashes here as they result in inconsistent results
+                       // between Windows and other OS, as well as between functions
+                       // that try to normalise these in one or both directions.
+                       // For example, tempnam rejects directory separators in the prefix which
+                       // means it rejects any namespaced class on Windows.
+                       // And then there is, wfMkdirParents which normalises paths always
+                       // whereas most other PHP and MW functions do not.
+                       'MW_PHPUnit_' . strtr( static::class, [ '\\' => '_' ] ) . '_'
+               );
+               $this->tmpFiles[] = $fileName;
+
+               return $fileName;
+       }
+
+       /**
+        * obtains a new temporary directory
+        *
+        * The obtained directory is enlisted to be removed (recursively with all its contained
+        * files) upon tearDown.
+        *
+        * @since 1.20
+        *
+        * @return string Absolute name of the temporary directory
+        */
+       protected function getNewTempDirectory() {
+               // Starting of with a temporary *file*.
+               $fileName = $this->getNewTempFile();
+
+               // Converting the temporary file to a *directory*.
+               // The following is not atomic, but at least we now have a single place,
+               // where temporary directory creation is bundled and can be improved.
+               unlink( $fileName );
+               // If this fails for some reason, PHP will warn and fail the test.
+               mkdir( $fileName, 0777, /* recursive = */ true );
+
+               return $fileName;
+       }
+
+       protected function setUp() {
+               parent::setUp();
+               $this->called['setUp'] = true;
+
+               $this->phpErrorLevel = intval( ini_get( 'error_reporting' ) );
+
+               $this->overriddenServices = [];
+
+               // Cleaning up temporary files
+               foreach ( $this->tmpFiles as $fileName ) {
+                       if ( is_file( $fileName ) || ( is_link( $fileName ) ) ) {
+                               unlink( $fileName );
+                       } elseif ( is_dir( $fileName ) ) {
+                               wfRecursiveRemoveDir( $fileName );
+                       }
+               }
+
+               if ( $this->needsDB() && $this->db ) {
+                       // Clean up open transactions
+                       while ( $this->db->trxLevel() > 0 ) {
+                               $this->db->rollback( __METHOD__, 'flush' );
+                       }
+                       // Check for unsafe queries
+                       if ( $this->db->getType() === 'mysql' ) {
+                               $this->db->query( "SET sql_mode = 'STRICT_ALL_TABLES'", __METHOD__ );
+                       }
+               }
+
+               // Reset all caches between tests.
+               self::resetNonServiceCaches();
+
+               // XXX: reset maintenance triggers
+               // Hook into period lag checks which often happen in long-running scripts
+               $lbFactory = $this->localServices->getDBLoadBalancerFactory();
+               Maintenance::setLBFactoryTriggers( $lbFactory, $this->localServices->getMainConfig() );
+
+               ob_start( 'MediaWikiTestCase::wfResetOutputBuffersBarrier' );
+       }
+
+       protected function addTmpFiles( $files ) {
+               $this->tmpFiles = array_merge( $this->tmpFiles, (array)$files );
+       }
+
+       // @todo Make const when we no longer support HHVM (T192166)
+       private static $namespaceAffectingSettings = [
+               'wgAllowImageMoving',
+               'wgCanonicalNamespaceNames',
+               'wgCapitalLinkOverrides',
+               'wgCapitalLinks',
+               'wgContentNamespaces',
+               'wgExtensionMessagesFiles',
+               'wgExtensionNamespaces',
+               'wgExtraNamespaces',
+               'wgExtraSignatureNamespaces',
+               'wgNamespaceContentModels',
+               'wgNamespaceProtection',
+               'wgNamespacesWithSubpages',
+               'wgNonincludableNamespaces',
+               'wgRestrictionLevels',
+       ];
+
+       protected function tearDown() {
+               global $wgRequest, $wgSQLMode;
+
+               $status = ob_get_status();
+               if ( isset( $status['name'] ) &&
+                       $status['name'] === 'MediaWikiTestCase::wfResetOutputBuffersBarrier'
+               ) {
+                       ob_end_flush();
+               }
+
+               $this->called['tearDown'] = true;
+               // Cleaning up temporary files
+               foreach ( $this->tmpFiles as $fileName ) {
+                       if ( is_file( $fileName ) || ( is_link( $fileName ) ) ) {
+                               unlink( $fileName );
+                       } elseif ( is_dir( $fileName ) ) {
+                               wfRecursiveRemoveDir( $fileName );
+                       }
+               }
+
+               if ( $this->needsDB() && $this->db ) {
+                       // Clean up open transactions
+                       while ( $this->db->trxLevel() > 0 ) {
+                               $this->db->rollback( __METHOD__, 'flush' );
+                       }
+                       if ( $this->db->getType() === 'mysql' ) {
+                               $this->db->query( "SET sql_mode = " . $this->db->addQuotes( $wgSQLMode ),
+                                       __METHOD__ );
+                       }
+               }
+
+               // Re-enable any disabled deprecation warnings
+               MWDebug::clearLog();
+               // Restore mw globals
+               foreach ( $this->mwGlobals as $key => $value ) {
+                       $GLOBALS[$key] = $value;
+               }
+               foreach ( $this->mwGlobalsToUnset as $value ) {
+                       unset( $GLOBALS[$value] );
+               }
+               foreach ( $this->iniSettings as $name => $value ) {
+                       ini_set( $name, $value );
+               }
+               if (
+                       array_intersect( self::$namespaceAffectingSettings, array_keys( $this->mwGlobals ) ) ||
+                       array_intersect( self::$namespaceAffectingSettings, $this->mwGlobalsToUnset )
+               ) {
+                       $this->resetNamespaces();
+               }
+               $this->mwGlobals = [];
+               $this->mwGlobalsToUnset = [];
+               $this->restoreLoggers();
+
+               // TODO: move global state into MediaWikiServices
+               RequestContext::resetMain();
+               if ( session_id() !== '' ) {
+                       session_write_close();
+                       session_id( '' );
+               }
+               $wgRequest = new FauxRequest();
+               MediaWiki\Session\SessionManager::resetCache();
+               MediaWiki\Auth\AuthManager::resetCache();
+
+               $phpErrorLevel = intval( ini_get( 'error_reporting' ) );
+
+               if ( $phpErrorLevel !== $this->phpErrorLevel ) {
+                       ini_set( 'error_reporting', $this->phpErrorLevel );
+
+                       $oldHex = strtoupper( dechex( $this->phpErrorLevel ) );
+                       $newHex = strtoupper( dechex( $phpErrorLevel ) );
+                       $message = "PHP error_reporting setting was left dirty: "
+                               . "was 0x$oldHex before test, 0x$newHex after test!";
+
+                       $this->fail( $message );
+               }
+
+               parent::tearDown();
+       }
+
+       /**
+        * Make sure MediaWikiTestCase extending classes have called their
+        * parent setUp method
+        *
+        * With strict coverage activated in PHP_CodeCoverage, this test would be
+        * marked as risky without the following annotation (T152923).
+        * @coversNothing
+        */
+       final public function testMediaWikiTestCaseParentSetupCalled() {
+               $this->assertArrayHasKey( 'setUp', $this->called,
+                       static::class . '::setUp() must call parent::setUp()'
+               );
+       }
+
+       /**
+        * Sets a service, maintaining a stashed version of the previous service to be
+        * restored in tearDown.
+        *
+        * @note Tests must not call overrideMwServices() after calling setService(), since that would
+        *       lose the new service instance. Since 1.34, resetServices() can be used instead, which
+        *       would reset other services, but retain any services set using setService().
+        *       This means that once a service is set using this method, it cannot be reverted to
+        *       the original service within the same test method. The original service is restored
+        *       in tearDown after the test method has terminated.
+        *
+        * @param string $name
+        * @param object $service The service instance, or a callable that returns the service instance.
+        *
+        * @since 1.27
+        *
+        */
+       protected function setService( $name, $service ) {
+               if ( !$this->localServices ) {
+                       throw new Exception( __METHOD__ . ' must be called after MediaWikiTestCase::run()' );
+               }
+
+               if ( $this->localServices !== MediaWikiServices::getInstance() ) {
+                       throw new Exception( __METHOD__ . ' will not work because the global MediaWikiServices '
+                               . 'instance has been replaced by test code.' );
+               }
+
+               if ( is_callable( $service ) ) {
+                       $instantiator = $service;
+               } else {
+                       $instantiator = function () use ( $service ) {
+                               return $service;
+                       };
+               }
+
+               $this->overriddenServices[] = $name;
+
+               $this->localServices->disableService( $name );
+               $this->localServices->redefineService(
+                       $name,
+                       $instantiator
+               );
+
+               if ( $name === 'ContentLanguage' ) {
+                       $this->doSetMwGlobals( [ 'wgContLang' => $this->localServices->getContentLanguage() ] );
+               }
+       }
+
+       /**
+        * Sets a global, maintaining a stashed version of the previous global to be
+        * restored in tearDown
+        *
+        * The key is added to the array of globals that will be reset afterwards
+        * in the tearDown().
+        *
+        * It may be necessary to call resetServices() to allow any changed configuration variables
+        * to take effect on services that get initialized based on these variables.
+        *
+        * @par Example
+        * @code
+        *     protected function setUp() {
+        *         $this->setMwGlobals( 'wgRestrictStuff', true );
+        *     }
+        *
+        *     function testFoo() {}
+        *
+        *     function testBar() {}
+        *         $this->assertTrue( self::getX()->doStuff() );
+        *
+        *         $this->setMwGlobals( 'wgRestrictStuff', false );
+        *         $this->assertTrue( self::getX()->doStuff() );
+        *     }
+        *
+        *     function testQuux() {}
+        * @endcode
+        *
+        * @param array|string $pairs Key to the global variable, or an array
+        *  of key/value pairs.
+        * @param mixed|null $value Value to set the global to (ignored
+        *  if an array is given as first argument).
+        *
+        * @note To allow changes to global variables to take effect on global service instances,
+        *       call resetServices().
+        *
+        * @since 1.21
+        */
+       protected function setMwGlobals( $pairs, $value = null ) {
+               if ( is_string( $pairs ) ) {
+                       $pairs = [ $pairs => $value ];
+               }
+
+               if ( isset( $pairs['wgContLang'] ) ) {
+                       throw new MWException(
+                               'No setting $wgContLang, use setContentLang() or setService( \'ContentLanguage\' )'
+                       );
+               }
+
+               $this->doSetMwGlobals( $pairs, $value );
+       }
+
+       /**
+        * An internal method that allows setService() to set globals that tests are not supposed to
+        * touch.
+        */
+       private function doSetMwGlobals( $pairs, $value = null ) {
+               $this->doStashMwGlobals( array_keys( $pairs ) );
+
+               foreach ( $pairs as $key => $value ) {
+                       $GLOBALS[$key] = $value;
+               }
+
+               if ( array_intersect( self::$namespaceAffectingSettings, array_keys( $pairs ) ) ) {
+                       $this->resetNamespaces();
+               }
+       }
+
+       /**
+        * Set an ini setting for the duration of the test
+        * @param string $name Name of the setting
+        * @param string $value Value to set
+        * @since 1.32
+        */
+       protected function setIniSetting( $name, $value ) {
+               $original = ini_get( $name );
+               $this->iniSettings[$name] = $original;
+               ini_set( $name, $value );
+       }
+
+       /**
+        * Must be called whenever namespaces are changed, e.g., $wgExtraNamespaces is altered.
+        * Otherwise old namespace data will lurk and cause bugs.
+        */
+       private function resetNamespaces() {
+               if ( !$this->localServices ) {
+                       throw new Exception( __METHOD__ . ' must be called after MediaWikiTestCase::run()' );
+               }
+
+               if ( $this->localServices !== MediaWikiServices::getInstance() ) {
+                       throw new Exception( __METHOD__ . ' will not work because the global MediaWikiServices '
+                               . 'instance has been replaced by test code.' );
+               }
+
+               Language::clearCaches();
+       }
+
+       /**
+        * Check if we can back up a value by performing a shallow copy.
+        * Values which fail this test are copied recursively.
+        *
+        * @param mixed $value
+        * @return bool True if a shallow copy will do; false if a deep copy
+        *  is required.
+        */
+       private static function canShallowCopy( $value ) {
+               if ( is_scalar( $value ) || $value === null ) {
+                       return true;
+               }
+               if ( is_array( $value ) ) {
+                       foreach ( $value as $subValue ) {
+                               if ( !is_scalar( $subValue ) && $subValue !== null ) {
+                                       return false;
+                               }
+                       }
+                       return true;
+               }
+               return false;
+       }
+
+       private function doStashMwGlobals( $globalKeys ) {
+               if ( is_string( $globalKeys ) ) {
+                       $globalKeys = [ $globalKeys ];
+               }
+
+               foreach ( $globalKeys as $globalKey ) {
+                       // NOTE: make sure we only save the global once or a second call to
+                       // setMwGlobals() on the same global would override the original
+                       // value.
+                       if (
+                               !array_key_exists( $globalKey, $this->mwGlobals ) &&
+                               !array_key_exists( $globalKey, $this->mwGlobalsToUnset )
+                       ) {
+                               if ( !array_key_exists( $globalKey, $GLOBALS ) ) {
+                                       $this->mwGlobalsToUnset[$globalKey] = $globalKey;
+                                       continue;
+                               }
+                               // NOTE: we serialize then unserialize the value in case it is an object
+                               // this stops any objects being passed by reference. We could use clone
+                               // and if is_object but this does account for objects within objects!
+                               if ( self::canShallowCopy( $GLOBALS[$globalKey] ) ) {
+                                       $this->mwGlobals[$globalKey] = $GLOBALS[$globalKey];
+                               } elseif (
+                                       // Many MediaWiki types are safe to clone. These are the
+                                       // ones that are most commonly stashed.
+                                       $GLOBALS[$globalKey] instanceof Language ||
+                                       $GLOBALS[$globalKey] instanceof User ||
+                                       $GLOBALS[$globalKey] instanceof FauxRequest
+                               ) {
+                                       $this->mwGlobals[$globalKey] = clone $GLOBALS[$globalKey];
+                               } elseif ( $this->containsClosure( $GLOBALS[$globalKey] ) ) {
+                                       // Serializing Closure only gives a warning on HHVM while
+                                       // it throws an Exception on Zend.
+                                       // Workaround for https://github.com/facebook/hhvm/issues/6206
+                                       $this->mwGlobals[$globalKey] = $GLOBALS[$globalKey];
+                               } else {
+                                       try {
+                                               $this->mwGlobals[$globalKey] = unserialize( serialize( $GLOBALS[$globalKey] ) );
+                                       } catch ( Exception $e ) {
+                                               $this->mwGlobals[$globalKey] = $GLOBALS[$globalKey];
+                                       }
+                               }
+                       }
+               }
+       }
+
+       /**
+        * @param mixed $var
+        * @param int $maxDepth
+        *
+        * @return bool
+        */
+       private function containsClosure( $var, $maxDepth = 15 ) {
+               if ( $var instanceof Closure ) {
+                       return true;
+               }
+               if ( !is_array( $var ) || $maxDepth === 0 ) {
+                       return false;
+               }
+
+               foreach ( $var as $value ) {
+                       if ( $this->containsClosure( $value, $maxDepth - 1 ) ) {
+                               return true;
+                       }
+               }
+               return false;
+       }
+
+       /**
+        * Merges the given values into a MW global array variable.
+        * Useful for setting some entries in a configuration array, instead of
+        * setting the entire array.
+        *
+        * It may be necessary to call resetServices() to allow any changed configuration variables
+        * to take effect on services that get initialized based on these variables.
+        *
+        * @param string $name The name of the global, as in wgFooBar
+        * @param array $values The array containing the entries to set in that global
+        *
+        * @throws MWException If the designated global is not an array.
+        *
+        * @note To allow changes to global variables to take effect on global service instances,
+        *       call resetServices().
+        *
+        * @since 1.21
+        */
+       protected function mergeMwGlobalArrayValue( $name, $values ) {
+               if ( !isset( $GLOBALS[$name] ) ) {
+                       $merged = $values;
+               } else {
+                       if ( !is_array( $GLOBALS[$name] ) ) {
+                               throw new MWException( "MW global $name is not an array." );
+                       }
+
+                       // NOTE: do not use array_merge, it screws up for numeric keys.
+                       $merged = $GLOBALS[$name];
+                       foreach ( $values as $k => $v ) {
+                               $merged[$k] = $v;
+                       }
+               }
+
+               $this->setMwGlobals( $name, $merged );
+       }
+
+       /**
+        * Resets service instances in the global instance of MediaWikiServices.
+        *
+        * In contrast to overrideMwServices(), this does not create a new MediaWikiServices instance,
+        * and it preserves any service instances set via setService().
+        *
+        * The primary use case for this method is to allow changes to global configuration variables
+        * to take effect on services that get initialized based on these global configuration
+        * variables. Similarly, it may be necessary to call resetServices() after calling setService(),
+        * so the newly set service gets picked up by any other service definitions that may use it.
+        *
+        * @see MediaWikiServices::resetServiceForTesting.
+        *
+        * @since 1.34
+        */
+       protected function resetServices() {
+               // Reset but don't destroy service instances supplied via setService().
+               foreach ( $this->overriddenServices as $name ) {
+                       $this->localServices->resetServiceForTesting( $name, false );
+               }
+
+               // Reset all services with the destroy flag set.
+               // This will not have any effect on services that had already been reset above.
+               foreach ( $this->localServices->getServiceNames() as $name ) {
+                       $this->localServices->resetServiceForTesting( $name, true );
+               }
+
+               self::resetGlobalParser();
+       }
+
+       /**
+        * Installs a new global instance of MediaWikiServices, allowing test cases to override
+        * settings and services.
+        *
+        * This method can be used to set up specific services or configuration as a fixture.
+        * It should not be used to reset services in between stages of a test - instead, the test
+        * should either be split, or resetServices() should be used.
+        *
+        * If called with no parameters, this method restores all services to their default state.
+        * This is done automatically before each test to isolate tests from any modification
+        * to settings and services that may have been applied by previous tests.
+        * That means that the effect of calling overrideMwServices() is undone before the next
+        * call to a test method.
+        *
+        * @note Calling this after having called setService() in the same test method (or the
+        *       associated setUp) will result in an MWException.
+        *       Tests should use either overrideMwServices() or setService(), but not mix both.
+        *       Since 1.34, resetServices() is available as an alternative compatible with setService().
+        *
+        * @since 1.27
+        *
+        * @param Config|null $configOverrides Configuration overrides for the new MediaWikiServices
+        *        instance.
+        * @param callable[] $services An associative array of services to re-define. Keys are service
+        *        names, values are callables.
+        *
+        * @return MediaWikiServices
+        * @throws MWException
+        */
+       protected function overrideMwServices(
+               Config $configOverrides = null, array $services = []
+       ) {
+               if ( $this->overriddenServices ) {
+                       throw new MWException(
+                               'The following services were set and are now being unset by overrideMwServices: ' .
+                                       implode( ', ', $this->overriddenServices )
+                       );
+               }
+               $newInstance = self::installMockMwServices( $configOverrides );
+
+               if ( $this->localServices ) {
+                       $this->localServices->destroy();
+               }
+
+               $this->localServices = $newInstance;
+
+               foreach ( $services as $name => $callback ) {
+                       $newInstance->redefineService( $name, $callback );
+               }
+
+               self::resetGlobalParser();
+
+               return $newInstance;
+       }
+
+       /**
+        * Creates a new "mock" MediaWikiServices instance, and installs it.
+        * This effectively resets all cached states in services, with the exception of
+        * the ConfigFactory and the DBLoadBalancerFactory service, which are inherited from
+        * the original MediaWikiServices.
+        *
+        * @note The new original MediaWikiServices instance can later be restored by calling
+        * restoreMwServices(). That original is determined by the first call to this method, or
+        * by setUpBeforeClass, whichever is called first. The caller is responsible for managing
+        * and, when appropriate, destroying any other MediaWikiServices instances that may get
+        * replaced when calling this method.
+        *
+        * @param Config|null $configOverrides Configuration overrides for the new MediaWikiServices
+        *        instance.
+        *
+        * @return MediaWikiServices the new mock service locator.
+        */
+       public static function installMockMwServices( Config $configOverrides = null ) {
+               // Make sure we have the original service locator
+               if ( !self::$originalServices ) {
+                       self::$originalServices = MediaWikiServices::getInstance();
+               }
+
+               if ( !$configOverrides ) {
+                       $configOverrides = new HashConfig();
+               }
+
+               $oldConfigFactory = self::$originalServices->getConfigFactory();
+               $oldLoadBalancerFactory = self::$originalServices->getDBLoadBalancerFactory();
+
+               $testConfig = self::makeTestConfig( null, $configOverrides );
+               $newServices = new MediaWikiServices( $testConfig );
+
+               // Load the default wiring from the specified files.
+               // NOTE: this logic mirrors the logic in MediaWikiServices::newInstance.
+               $wiringFiles = $testConfig->get( 'ServiceWiringFiles' );
+               $newServices->loadWiringFiles( $wiringFiles );
+
+               // Provide a traditional hook point to allow extensions to configure services.
+               Hooks::run( 'MediaWikiServices', [ $newServices ] );
+
+               // Use bootstrap config for all configuration.
+               // This allows config overrides via global variables to take effect.
+               $bootstrapConfig = $newServices->getBootstrapConfig();
+               $newServices->resetServiceForTesting( 'ConfigFactory' );
+               $newServices->redefineService(
+                       'ConfigFactory',
+                       self::makeTestConfigFactoryInstantiator(
+                               $oldConfigFactory,
+                               [ 'main' => $bootstrapConfig ]
+                       )
+               );
+               $newServices->resetServiceForTesting( 'DBLoadBalancerFactory' );
+               $newServices->redefineService(
+                       'DBLoadBalancerFactory',
+                       function ( MediaWikiServices $services ) use ( $oldLoadBalancerFactory ) {
+                               return $oldLoadBalancerFactory;
+                       }
+               );
+
+               MediaWikiServices::forceGlobalInstance( $newServices );
+
+               self::resetGlobalParser();
+
+               return $newServices;
+       }
+
+       /**
+        * Restores the original, non-mock MediaWikiServices instance.
+        * The previously active MediaWikiServices instance is destroyed,
+        * if it is different from the original that is to be restored.
+        *
+        * @note this if for internal use by test framework code. It should never be
+        * called from inside a test case, a data provider, or a setUp or tearDown method.
+        *
+        * @return bool true if the original service locator was restored,
+        *         false if there was nothing  too do.
+        */
+       public static function restoreMwServices() {
+               if ( !self::$originalServices ) {
+                       return false;
+               }
+
+               $currentServices = MediaWikiServices::getInstance();
+
+               if ( self::$originalServices === $currentServices ) {
+                       return false;
+               }
+
+               MediaWikiServices::forceGlobalInstance( self::$originalServices );
+               $currentServices->destroy();
+
+               self::resetGlobalParser();
+
+               return true;
+       }
+
+       /**
+        * If $wgParser has been unstubbed, replace it with a fresh one so it picks up any config
+        * changes. $wgParser is deprecated, but we still support it for now.
+        */
+       private static function resetGlobalParser() {
+               // phpcs:ignore MediaWiki.Usage.DeprecatedGlobalVariables.Deprecated$wgParser
+               global $wgParser;
+               if ( $wgParser instanceof StubObject ) {
+                       return;
+               }
+               $wgParser = new StubObject( 'wgParser', function () {
+                       return MediaWikiServices::getInstance()->getParser();
+               } );
+       }
+
+       /**
+        * @since 1.27
+        * @param string|Language $lang
+        */
+       public function setUserLang( $lang ) {
+               RequestContext::getMain()->setLanguage( $lang );
+               $this->setMwGlobals( 'wgLang', RequestContext::getMain()->getLanguage() );
+       }
+
+       /**
+        * @since 1.27
+        * @param string|Language $lang
+        */
+       public function setContentLang( $lang ) {
+               if ( $lang instanceof Language ) {
+                       $this->setMwGlobals( 'wgLanguageCode', $lang->getCode() );
+                       // Set to the exact object requested
+                       $this->setService( 'ContentLanguage', $lang );
+               } else {
+                       $this->setMwGlobals( 'wgLanguageCode', $lang );
+                       // Let the service handler make up the object.  Avoid calling setService(), because if
+                       // we do, overrideMwServices() will complain if it's called later on.
+                       $services = MediaWikiServices::getInstance();
+                       $services->resetServiceForTesting( 'ContentLanguage' );
+                       $this->doSetMwGlobals( [ 'wgContLang' => $services->getContentLanguage() ] );
+               }
+       }
+
+       /**
+        * Alters $wgGroupPermissions for the duration of the test.  Can be called
+        * with an array, like
+        *   [ '*' => [ 'read' => false ], 'user' => [ 'read' => false ] ]
+        * or three values to set a single permission, like
+        *   $this->setGroupPermissions( '*', 'read', false );
+        *
+        * @since 1.31
+        * @param array|string $newPerms Either an array of permissions to change,
+        *   in which case the next two parameters are ignored; or a single string
+        *   identifying a group, to use with the next two parameters.
+        * @param string|null $newKey
+        * @param mixed|null $newValue
+        */
+       public function setGroupPermissions( $newPerms, $newKey = null, $newValue = null ) {
+               global $wgGroupPermissions;
+
+               if ( is_string( $newPerms ) ) {
+                       $newPerms = [ $newPerms => [ $newKey => $newValue ] ];
+               }
+
+               $newPermissions = $wgGroupPermissions;
+               foreach ( $newPerms as $group => $permissions ) {
+                       foreach ( $permissions as $key => $value ) {
+                               $newPermissions[$group][$key] = $value;
+                       }
+               }
+
+               $this->setMwGlobals( 'wgGroupPermissions', $newPermissions );
+
+               // Reset services so they pick up the new permissions.
+               // Resetting just PermissionManager is not sufficient, since other services may
+               // have the old instance of PermissionManager injected.
+               $this->resetServices();
+       }
+
+       /**
+        *
+        * @since 1.34
+        * Sets the logger for a specified channel, for the duration of the test.
+        * @since 1.27
+        * @param string $channel
+        * @param LoggerInterface $logger
+        */
+       protected function setLogger( $channel, LoggerInterface $logger ) {
+               // TODO: Once loggers are managed by MediaWikiServices, use
+               //       resetServiceForTesting() to set loggers.
+
+               $provider = LoggerFactory::getProvider();
+               $wrappedProvider = TestingAccessWrapper::newFromObject( $provider );
+               $singletons = $wrappedProvider->singletons;
+               if ( $provider instanceof MonologSpi ) {
+                       if ( !isset( $this->loggers[$channel] ) ) {
+                               $this->loggers[$channel] = $singletons['loggers'][$channel] ?? null;
+                       }
+                       $singletons['loggers'][$channel] = $logger;
+               } elseif ( $provider instanceof LegacySpi || $provider instanceof LogCapturingSpi ) {
+                       if ( !isset( $this->loggers[$channel] ) ) {
+                               $this->loggers[$channel] = $singletons[$channel] ?? null;
+                       }
+                       $singletons[$channel] = $logger;
+               } else {
+                       throw new LogicException( __METHOD__ . ': setting a logger for ' . get_class( $provider )
+                               . ' is not implemented' );
+               }
+               $wrappedProvider->singletons = $singletons;
+       }
+
+       /**
+        * Restores loggers replaced by setLogger().
+        * @since 1.27
+        */
+       private function restoreLoggers() {
+               $provider = LoggerFactory::getProvider();
+               $wrappedProvider = TestingAccessWrapper::newFromObject( $provider );
+               $singletons = $wrappedProvider->singletons;
+               foreach ( $this->loggers as $channel => $logger ) {
+                       if ( $provider instanceof MonologSpi ) {
+                               if ( $logger === null ) {
+                                       unset( $singletons['loggers'][$channel] );
+                               } else {
+                                       $singletons['loggers'][$channel] = $logger;
+                               }
+                       } elseif ( $provider instanceof LegacySpi || $provider instanceof LogCapturingSpi ) {
+                               if ( $logger === null ) {
+                                       unset( $singletons[$channel] );
+                               } else {
+                                       $singletons[$channel] = $logger;
+                               }
+                       }
+               }
+               $wrappedProvider->singletons = $singletons;
+               $this->loggers = [];
+       }
+
+       /**
+        * @return string
+        * @since 1.18
+        */
+       public function dbPrefix() {
+               return self::getTestPrefixFor( $this->db );
+       }
+
+       /**
+        * @param IDatabase $db
+        * @return string
+        * @since 1.32
+        */
+       public static function getTestPrefixFor( IDatabase $db ) {
+               return $db->getType() == 'oracle' ? self::ORA_DB_PREFIX : self::DB_PREFIX;
+       }
+
+       /**
+        * @return bool
+        * @since 1.18
+        */
+       public function needsDB() {
+               // If the test says it uses database tables, it needs the database
+               return $this->tablesUsed || $this->isTestInDatabaseGroup();
+       }
+
+       /**
+        * @return bool
+        * @since 1.32
+        */
+       protected function isTestInDatabaseGroup() {
+               // If the test class says it belongs to the Database group, it needs the database.
+               // NOTE: This ONLY checks for the group in the class level doc comment.
+               $rc = new ReflectionClass( $this );
+               return (bool)preg_match( '/@group +Database/im', $rc->getDocComment() );
+       }
+
+       /**
+        * Insert a new page.
+        *
+        * Should be called from addDBData().
+        *
+        * @since 1.25 ($namespace in 1.28)
+        * @param string|Title $pageName Page name or title
+        * @param string $text Page's content
+        * @param int|null $namespace Namespace id (name cannot already contain namespace)
+        * @param User|null $user If null, static::getTestSysop()->getUser() is used.
+        * @return array Title object and page id
+        * @throws MWException If this test cases's needsDB() method doesn't return true.
+        *         Test cases can use "@group Database" to enable database test support,
+        *         or list the tables under testing in $this->tablesUsed, or override the
+        *         needsDB() method.
+        */
+       protected function insertPage(
+               $pageName,
+               $text = 'Sample page for unit test.',
+               $namespace = null,
+               User $user = null
+       ) {
+               if ( !$this->needsDB() ) {
+                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
+                               ' method should return true. Use @group Database or $this->tablesUsed.' );
+               }
+
+               if ( is_string( $pageName ) ) {
+                       $title = Title::newFromText( $pageName, $namespace );
+               } else {
+                       $title = $pageName;
+               }
+
+               if ( !$user ) {
+                       $user = static::getTestSysop()->getUser();
+               }
+               $comment = __METHOD__ . ': Sample page for unit test.';
+
+               $page = WikiPage::factory( $title );
+               $page->doEditContent( ContentHandler::makeContent( $text, $title ), $comment, 0, false, $user );
+
+               return [
+                       'title' => $title,
+                       'id' => $page->getId(),
+               ];
+       }
+
+       /**
+        * Stub. If a test suite needs to add additional data to the database, it should
+        * implement this method and do so. This method is called once per test suite
+        * (i.e. once per class).
+        *
+        * Note data added by this method may be removed by resetDB() depending on
+        * the contents of $tablesUsed.
+        *
+        * To add additional data between test function runs, override prepareDB().
+        *
+        * @see addDBData()
+        * @see resetDB()
+        *
+        * @since 1.27
+        */
+       public function addDBDataOnce() {
+       }
+
+       /**
+        * Stub. Subclasses may override this to prepare the database.
+        * Called before every test run (test function or data set).
+        *
+        * @see addDBDataOnce()
+        * @see resetDB()
+        *
+        * @since 1.18
+        */
+       public function addDBData() {
+       }
+
+       /**
+        * @since 1.32
+        */
+       protected function addCoreDBData() {
+               if ( $this->db->getType() == 'oracle' ) {
+                       # Insert 0 user to prevent FK violations
+                       # Anonymous user
+                       if ( !$this->db->selectField( 'user', '1', [ 'user_id' => 0 ] ) ) {
+                               $this->db->insert( 'user', [
+                                       'user_id' => 0,
+                                       'user_name' => 'Anonymous' ], __METHOD__, [ 'IGNORE' ] );
+                       }
+
+                       # Insert 0 page to prevent FK violations
+                       # Blank page
+                       if ( !$this->db->selectField( 'page', '1', [ 'page_id' => 0 ] ) ) {
+                               $this->db->insert( 'page', [
+                                       'page_id' => 0,
+                                       'page_namespace' => 0,
+                                       'page_title' => ' ',
+                                       'page_restrictions' => null,
+                                       'page_is_redirect' => 0,
+                                       'page_is_new' => 0,
+                                       'page_random' => 0,
+                                       'page_touched' => $this->db->timestamp(),
+                                       'page_latest' => 0,
+                                       'page_len' => 0 ], __METHOD__, [ 'IGNORE' ] );
+                       }
+               }
+
+               SiteStatsInit::doPlaceholderInit();
+
+               User::resetIdByNameCache();
+
+               // Make sysop user
+               $user = static::getTestSysop()->getUser();
+
+               // Make 1 page with 1 revision
+               $page = WikiPage::factory( Title::newFromText( 'UTPage' ) );
+               if ( $page->getId() == 0 ) {
+                       $page->doEditContent(
+                               new WikitextContent( 'UTContent' ),
+                               'UTPageSummary',
+                               EDIT_NEW | EDIT_SUPPRESS_RC,
+                               false,
+                               $user
+                       );
+                       // an edit always attempt to purge backlink links such as history
+                       // pages. That is unnecessary.
+                       JobQueueGroup::singleton()->get( 'htmlCacheUpdate' )->delete();
+                       // WikiPages::doEditUpdates randomly adds RC purges
+                       JobQueueGroup::singleton()->get( 'recentChangesUpdate' )->delete();
+
+                       // doEditContent() probably started the session via
+                       // User::loadFromSession(). Close it now.
+                       if ( session_id() !== '' ) {
+                               session_write_close();
+                               session_id( '' );
+                       }
+               }
+       }
+
+       /**
+        * Restores MediaWiki to using the table set (table prefix) it was using before
+        * setupTestDB() was called. Useful if we need to perform database operations
+        * after the test run has finished (such as saving logs or profiling info).
+        *
+        * This is called by phpunit/bootstrap.php after the last test.
+        *
+        * @since 1.21
+        */
+       public static function teardownTestDB() {
+               global $wgJobClasses;
+
+               if ( !self::$dbSetup ) {
+                       return;
+               }
+
+               Hooks::run( 'UnitTestsBeforeDatabaseTeardown' );
+
+               foreach ( $wgJobClasses as $type => $class ) {
+                       // Delete any jobs under the clone DB (or old prefix in other stores)
+                       JobQueueGroup::singleton()->get( $type )->delete();
+               }
+
+               // T219673: close any connections from code that failed to call reuseConnection()
+               // or is still holding onto a DBConnRef instance (e.g. in a singleton).
+               MediaWikiServices::getInstance()->getDBLoadBalancerFactory()->closeAll();
+               CloneDatabase::changePrefix( self::$oldTablePrefix );
+
+               self::$oldTablePrefix = false;
+               self::$dbSetup = false;
+       }
+
+       /**
+        * Setups a database with cloned tables using the given prefix.
+        *
+        * If reuseDB is true and certain conditions apply, it will just change the prefix.
+        * Otherwise, it will clone the tables and change the prefix.
+        *
+        * @param IMaintainableDatabase $db Database to use
+        * @param string|null $prefix Prefix to use for test tables. If not given, the prefix is determined
+        *        automatically for $db.
+        * @return bool True if tables were cloned, false if only the prefix was changed
+        */
+       protected static function setupDatabaseWithTestPrefix(
+               IMaintainableDatabase $db,
+               $prefix = null
+       ) {
+               if ( $prefix === null ) {
+                       $prefix = self::getTestPrefixFor( $db );
+               }
+
+               if ( ( $db->getType() == 'oracle' || !self::$useTemporaryTables ) && self::$reuseDB ) {
+                       $db->tablePrefix( $prefix );
+                       return false;
+               }
+
+               if ( !isset( $db->_originalTablePrefix ) ) {
+                       $oldPrefix = $db->tablePrefix();
+
+                       if ( $oldPrefix === $prefix ) {
+                               // table already has the correct prefix, but presumably no cloned tables
+                               $oldPrefix = self::$oldTablePrefix;
+                       }
+
+                       $db->tablePrefix( $oldPrefix );
+                       $tablesCloned = self::listTables( $db );
+                       $dbClone = new CloneDatabase( $db, $tablesCloned, $prefix, $oldPrefix );
+                       $dbClone->useTemporaryTables( self::$useTemporaryTables );
+
+                       $dbClone->cloneTableStructure();
+
+                       $db->tablePrefix( $prefix );
+                       $db->_originalTablePrefix = $oldPrefix;
+               }
+
+               return true;
+       }
+
+       /**
+        * Set up all test DBs
+        */
+       public function setupAllTestDBs() {
+               global $wgDBprefix;
+
+               self::$oldTablePrefix = $wgDBprefix;
+
+               $testPrefix = $this->dbPrefix();
+
+               // switch to a temporary clone of the database
+               self::setupTestDB( $this->db, $testPrefix );
+
+               if ( self::isUsingExternalStoreDB() ) {
+                       self::setupExternalStoreTestDBs( $testPrefix );
+               }
+
+               // NOTE: Change the prefix in the LBFactory and $wgDBprefix, to prevent
+               // *any* database connections to operate on live data.
+               CloneDatabase::changePrefix( $testPrefix );
+       }
+
+       /**
+        * Creates an empty skeleton of the wiki database by cloning its structure
+        * to equivalent tables using the given $prefix. Then sets MediaWiki to
+        * use the new set of tables (aka schema) instead of the original set.
+        *
+        * This is used to generate a dummy table set, typically consisting of temporary
+        * tables, that will be used by tests instead of the original wiki database tables.
+        *
+        * @since 1.21
+        *
+        * @note the original table prefix is stored in self::$oldTablePrefix. This is used
+        * by teardownTestDB() to return the wiki to using the original table set.
+        *
+        * @note this method only works when first called. Subsequent calls have no effect,
+        * even if using different parameters.
+        *
+        * @param IMaintainableDatabase $db The database connection
+        * @param string $prefix The prefix to use for the new table set (aka schema).
+        *
+        * @throws MWException If the database table prefix is already $prefix
+        */
+       public static function setupTestDB( IMaintainableDatabase $db, $prefix ) {
+               if ( self::$dbSetup ) {
+                       return;
+               }
+
+               if ( $db->tablePrefix() === $prefix ) {
+                       throw new MWException(
+                               'Cannot run unit tests, the database prefix is already "' . $prefix . '"' );
+               }
+
+               // TODO: the below should be re-written as soon as LBFactory, LoadBalancer,
+               // and Database no longer use global state.
+
+               self::$dbSetup = true;
+
+               if ( !self::setupDatabaseWithTestPrefix( $db, $prefix ) ) {
+                       return;
+               }
+
+               // Assuming this isn't needed for External Store database, and not sure if the procedure
+               // would be available there.
+               if ( $db->getType() == 'oracle' ) {
+                       $db->query( 'BEGIN FILL_WIKI_INFO; END;', __METHOD__ );
+               }
+
+               Hooks::run( 'UnitTestsAfterDatabaseSetup', [ $db, $prefix ] );
+       }
+
+       /**
+        * Clones the External Store database(s) for testing
+        *
+        * @param string|null $testPrefix Prefix for test tables. Will be determined automatically
+        *        if not given.
+        */
+       protected static function setupExternalStoreTestDBs( $testPrefix = null ) {
+               $connections = self::getExternalStoreDatabaseConnections();
+               foreach ( $connections as $dbw ) {
+                       self::setupDatabaseWithTestPrefix( $dbw, $testPrefix );
+               }
+       }
+
+       /**
+        * Gets master database connections for all of the ExternalStoreDB
+        * stores configured in $wgDefaultExternalStore.
+        *
+        * @return Database[] Array of Database master connections
+        */
+       protected static function getExternalStoreDatabaseConnections() {
+               global $wgDefaultExternalStore;
+
+               /** @var ExternalStoreDB $externalStoreDB */
+               $externalStoreDB = ExternalStore::getStoreObject( 'DB' );
+               $defaultArray = (array)$wgDefaultExternalStore;
+               $dbws = [];
+               foreach ( $defaultArray as $url ) {
+                       if ( strpos( $url, 'DB://' ) === 0 ) {
+                               list( $proto, $cluster ) = explode( '://', $url, 2 );
+                               // Avoid getMaster() because setupDatabaseWithTestPrefix()
+                               // requires Database instead of plain DBConnRef/IDatabase
+                               $dbws[] = $externalStoreDB->getMaster( $cluster );
+                       }
+               }
+
+               return $dbws;
+       }
+
+       /**
+        * Check whether ExternalStoreDB is being used
+        *
+        * @return bool True if it's being used
+        */
+       protected static function isUsingExternalStoreDB() {
+               global $wgDefaultExternalStore;
+               if ( !$wgDefaultExternalStore ) {
+                       return false;
+               }
+
+               $defaultArray = (array)$wgDefaultExternalStore;
+               foreach ( $defaultArray as $url ) {
+                       if ( strpos( $url, 'DB://' ) === 0 ) {
+                               return true;
+                       }
+               }
+
+               return false;
+       }
+
+       /**
+        * @throws LogicException if the given database connection is not a set up to use
+        * mock tables.
+        *
+        * @since 1.31 this is no longer private.
+        */
+       protected function ensureMockDatabaseConnection( IDatabase $db ) {
+               if ( $db->tablePrefix() !== $this->dbPrefix() ) {
+                       throw new LogicException(
+                               'Trying to delete mock tables, but table prefix does not indicate a mock database.'
+                       );
+               }
+       }
+
+       private static $schemaOverrideDefaults = [
+               'scripts' => [],
+               'create' => [],
+               'drop' => [],
+               'alter' => [],
+       ];
+
+       /**
+        * Stub. If a test suite needs to test against a specific database schema, it should
+        * override this method and return the appropriate information from it.
+        *
+        * 'create', 'drop' and 'alter' in the returned array should list all the tables affected
+        * by the 'scripts', even if the test is only interested in a subset of them, otherwise
+        * the overrides may not be fully cleaned up, leading to errors later.
+        *
+        * @param IMaintainableDatabase $db The DB connection to use for the mock schema.
+        *        May be used to check the current state of the schema, to determine what
+        *        overrides are needed.
+        *
+        * @return array An associative array with the following fields:
+        *  - 'scripts': any SQL scripts to run. If empty or not present, schema overrides are skipped.
+        * - 'create': A list of tables created (may or may not exist in the original schema).
+        * - 'drop': A list of tables dropped (expected to be present in the original schema).
+        * - 'alter': A list of tables altered (expected to be present in the original schema).
+        */
+       protected function getSchemaOverrides( IMaintainableDatabase $db ) {
+               return [];
+       }
+
+       /**
+        * Undoes the specified schema overrides..
+        * Called once per test class, just before addDataOnce().
+        *
+        * @param IMaintainableDatabase $db
+        * @param array $oldOverrides
+        */
+       private function undoSchemaOverrides( IMaintainableDatabase $db, $oldOverrides ) {
+               $this->ensureMockDatabaseConnection( $db );
+
+               $oldOverrides = $oldOverrides + self::$schemaOverrideDefaults;
+               $originalTables = $this->listOriginalTables( $db );
+
+               // Drop tables that need to be restored or removed.
+               $tablesToDrop = array_merge( $oldOverrides['create'], $oldOverrides['alter'] );
+
+               // Restore tables that have been dropped or created or altered,
+               // if they exist in the original schema.
+               $tablesToRestore = array_merge( $tablesToDrop, $oldOverrides['drop'] );
+               $tablesToRestore = array_intersect( $originalTables, $tablesToRestore );
+
+               if ( $tablesToDrop ) {
+                       $this->dropMockTables( $db, $tablesToDrop );
+               }
+
+               if ( $tablesToRestore ) {
+                       $this->recloneMockTables( $db, $tablesToRestore );
+
+                       // Reset the restored tables, mainly for the side effect of
+                       // re-calling $this->addCoreDBData() if necessary.
+                       $this->resetDB( $db, $tablesToRestore );
+               }
+       }
+
+       /**
+        * Applies the schema overrides returned by getSchemaOverrides(),
+        * after undoing any previously applied schema overrides.
+        * Called once per test class, just before addDataOnce().
+        */
+       private function setUpSchema( IMaintainableDatabase $db ) {
+               // Undo any active overrides.
+               $oldOverrides = $db->_schemaOverrides ?? self::$schemaOverrideDefaults;
+
+               if ( $oldOverrides['alter'] || $oldOverrides['create'] || $oldOverrides['drop'] ) {
+                       $this->undoSchemaOverrides( $db, $oldOverrides );
+                       unset( $db->_schemaOverrides );
+               }
+
+               // Determine new overrides.
+               $overrides = $this->getSchemaOverrides( $db ) + self::$schemaOverrideDefaults;
+
+               $extraKeys = array_diff(
+                       array_keys( $overrides ),
+                       array_keys( self::$schemaOverrideDefaults )
+               );
+
+               if ( $extraKeys ) {
+                       throw new InvalidArgumentException(
+                               'Schema override contains extra keys: ' . var_export( $extraKeys, true )
+                       );
+               }
+
+               if ( !$overrides['scripts'] ) {
+                       // no scripts to run
+                       return;
+               }
+
+               if ( !$overrides['create'] && !$overrides['drop'] && !$overrides['alter'] ) {
+                       throw new InvalidArgumentException(
+                               'Schema override scripts given, but no tables are declared to be '
+                               . 'created, dropped or altered.'
+                       );
+               }
+
+               $this->ensureMockDatabaseConnection( $db );
+
+               // Drop the tables that will be created by the schema scripts.
+               $originalTables = $this->listOriginalTables( $db );
+               $tablesToDrop = array_intersect( $originalTables, $overrides['create'] );
+
+               if ( $tablesToDrop ) {
+                       $this->dropMockTables( $db, $tablesToDrop );
+               }
+
+               // Run schema override scripts.
+               foreach ( $overrides['scripts'] as $script ) {
+                       $db->sourceFile(
+                               $script,
+                               null,
+                               null,
+                               __METHOD__,
+                               function ( $cmd ) {
+                                       return $this->mungeSchemaUpdateQuery( $cmd );
+                               }
+                       );
+               }
+
+               $db->_schemaOverrides = $overrides;
+       }
+
+       private function mungeSchemaUpdateQuery( $cmd ) {
+               return self::$useTemporaryTables
+                       ? preg_replace( '/\bCREATE\s+TABLE\b/i', 'CREATE TEMPORARY TABLE', $cmd )
+                       : $cmd;
+       }
+
+       /**
+        * Drops the given mock tables.
+        *
+        * @param IMaintainableDatabase $db
+        * @param array $tables
+        */
+       private function dropMockTables( IMaintainableDatabase $db, array $tables ) {
+               $this->ensureMockDatabaseConnection( $db );
+
+               foreach ( $tables as $tbl ) {
+                       $tbl = $db->tableName( $tbl );
+                       $db->query( "DROP TABLE IF EXISTS $tbl", __METHOD__ );
+               }
+       }
+
+       /**
+        * Lists all tables in the live database schema, without a prefix.
+        *
+        * @param IMaintainableDatabase $db
+        * @return array
+        */
+       private function listOriginalTables( IMaintainableDatabase $db ) {
+               if ( !isset( $db->_originalTablePrefix ) ) {
+                       throw new LogicException( 'No original table prefix know, cannot list tables!' );
+               }
+
+               $originalTables = $db->listTables( $db->_originalTablePrefix, __METHOD__ );
+
+               $unittestPrefixRegex = '/^' . preg_quote( $this->dbPrefix(), '/' ) . '/';
+               $originalPrefixRegex = '/^' . preg_quote( $db->_originalTablePrefix, '/' ) . '/';
+
+               $originalTables = array_filter(
+                       $originalTables,
+                       function ( $pt ) use ( $unittestPrefixRegex ) {
+                               return !preg_match( $unittestPrefixRegex, $pt );
+                       }
+               );
+
+               $originalTables = array_map(
+                       function ( $pt ) use ( $originalPrefixRegex ) {
+                               return preg_replace( $originalPrefixRegex, '', $pt );
+                       },
+                       $originalTables
+               );
+
+               return array_unique( $originalTables );
+       }
+
+       /**
+        * Re-clones the given mock tables to restore them based on the live database schema.
+        * The tables listed in $tables are expected to currently not exist, so dropMockTables()
+        * should be called first.
+        *
+        * @param IMaintainableDatabase $db
+        * @param array $tables
+        */
+       private function recloneMockTables( IMaintainableDatabase $db, array $tables ) {
+               $this->ensureMockDatabaseConnection( $db );
+
+               if ( !isset( $db->_originalTablePrefix ) ) {
+                       throw new LogicException( 'No original table prefix know, cannot restore tables!' );
+               }
+
+               $originalTables = $this->listOriginalTables( $db );
+               $tables = array_intersect( $tables, $originalTables );
+
+               $dbClone = new CloneDatabase( $db, $tables, $db->tablePrefix(), $db->_originalTablePrefix );
+               $dbClone->useTemporaryTables( self::$useTemporaryTables );
+
+               $dbClone->cloneTableStructure();
+       }
+
+       /**
+        * Empty all tables so they can be repopulated for tests
+        *
+        * @param Database $db|null Database to reset
+        * @param array $tablesUsed Tables to reset
+        */
+       private function resetDB( $db, $tablesUsed ) {
+               if ( $db ) {
+                       $userTables = [ 'user', 'user_groups', 'user_properties', 'actor' ];
+                       $pageTables = [
+                               'page', 'revision', 'ip_changes', 'revision_comment_temp', 'comment', 'archive',
+                               'revision_actor_temp', 'slots', 'content', 'content_models', 'slot_roles',
+                       ];
+                       $coreDBDataTables = array_merge( $userTables, $pageTables );
+
+                       // If any of the user or page tables were marked as used, we should clear all of them.
+                       if ( array_intersect( $tablesUsed, $userTables ) ) {
+                               $tablesUsed = array_unique( array_merge( $tablesUsed, $userTables ) );
+                               TestUserRegistry::clear();
+
+                               // Reset $wgUser, which is probably 127.0.0.1, as its loaded data is probably not valid
+                               // @todo Should we start setting $wgUser to something nondeterministic
+                               //  to encourage tests to be updated to not depend on it?
+                               global $wgUser;
+                               $wgUser->clearInstanceCache( $wgUser->mFrom );
+                       }
+                       if ( array_intersect( $tablesUsed, $pageTables ) ) {
+                               $tablesUsed = array_unique( array_merge( $tablesUsed, $pageTables ) );
+                       }
+
+                       // Postgres, Oracle, and MSSQL all use mwuser/pagecontent
+                       // instead of user/text. But Postgres does not remap the
+                       // table name in tableExists(), so we mark the real table
+                       // names as being used.
+                       if ( $db->getType() === 'postgres' ) {
+                               if ( in_array( 'user', $tablesUsed ) ) {
+                                       $tablesUsed[] = 'mwuser';
+                               }
+                               if ( in_array( 'text', $tablesUsed ) ) {
+                                       $tablesUsed[] = 'pagecontent';
+                               }
+                       }
+
+                       foreach ( $tablesUsed as $tbl ) {
+                               $this->truncateTable( $tbl, $db );
+                       }
+
+                       if ( array_intersect( $tablesUsed, $coreDBDataTables ) ) {
+                               // Reset services that may contain information relating to the truncated tables
+                               $this->overrideMwServices();
+                               // Re-add core DB data that was deleted
+                               $this->addCoreDBData();
+                       }
+               }
+       }
+
+       /**
+        * Empties the given table and resets any auto-increment counters.
+        * Will also purge caches associated with some well known tables.
+        * If the table is not know, this method just returns.
+        *
+        * @param string $tableName
+        * @param IDatabase|null $db
+        */
+       protected function truncateTable( $tableName, IDatabase $db = null ) {
+               if ( !$db ) {
+                       $db = $this->db;
+               }
+
+               if ( !$db->tableExists( $tableName ) ) {
+                       return;
+               }
+
+               $truncate = in_array( $db->getType(), [ 'oracle', 'mysql' ] );
+
+               if ( $truncate ) {
+                       $db->query( 'TRUNCATE TABLE ' . $db->tableName( $tableName ), __METHOD__ );
+               } else {
+                       $db->delete( $tableName, '*', __METHOD__ );
+               }
+
+               if ( $db instanceof DatabasePostgres || $db instanceof DatabaseSqlite ) {
+                       // Reset the table's sequence too.
+                       $db->resetSequenceForTable( $tableName, __METHOD__ );
+               }
+
+               // re-initialize site_stats table
+               if ( $tableName === 'site_stats' ) {
+                       SiteStatsInit::doPlaceholderInit();
+               }
+       }
+
+       private static function unprefixTable( &$tableName, $ind, $prefix ) {
+               $tableName = substr( $tableName, strlen( $prefix ) );
+       }
+
+       private static function isNotUnittest( $table ) {
+               return strpos( $table, self::DB_PREFIX ) !== 0;
+       }
+
+       /**
+        * @since 1.18
+        *
+        * @param IMaintainableDatabase $db
+        *
+        * @return array
+        */
+       public static function listTables( IMaintainableDatabase $db ) {
+               $prefix = $db->tablePrefix();
+               $tables = $db->listTables( $prefix, __METHOD__ );
+
+               if ( $db->getType() === 'mysql' ) {
+                       static $viewListCache = null;
+                       if ( $viewListCache === null ) {
+                               $viewListCache = $db->listViews( null, __METHOD__ );
+                       }
+                       // T45571: cannot clone VIEWs under MySQL
+                       $tables = array_diff( $tables, $viewListCache );
+               }
+               array_walk( $tables, [ __CLASS__, 'unprefixTable' ], $prefix );
+
+               // Don't duplicate test tables from the previous fataled run
+               $tables = array_filter( $tables, [ __CLASS__, 'isNotUnittest' ] );
+
+               if ( $db->getType() == 'sqlite' ) {
+                       $tables = array_flip( $tables );
+                       // these are subtables of searchindex and don't need to be duped/dropped separately
+                       unset( $tables['searchindex_content'] );
+                       unset( $tables['searchindex_segdir'] );
+                       unset( $tables['searchindex_segments'] );
+                       $tables = array_flip( $tables );
+               }
+
+               return $tables;
+       }
+
+       /**
+        * Copy test data from one database connection to another.
+        *
+        * This should only be used for small data sets.
+        *
+        * @param IDatabase $source
+        * @param IDatabase $target
+        */
+       public function copyTestData( IDatabase $source, IDatabase $target ) {
+               if ( $this->db->getType() === 'sqlite' ) {
+                       // SQLite uses a non-temporary copy of the searchindex table for testing,
+                       // which gets deleted and re-created when setting up the secondary connection,
+                       // causing "Error 17" when trying to copy the data. See T191863#4130112.
+                       throw new RuntimeException(
+                               'Setting up a secondary database connection with test data is currently not'
+                               . 'with SQLite. You may want to use markTestSkippedIfDbType() to bypass this issue.'
+                       );
+               }
+
+               $tables = self::listOriginalTables( $source );
+
+               foreach ( $tables as $table ) {
+                       $res = $source->select( $table, '*', [], __METHOD__ );
+                       $allRows = [];
+
+                       foreach ( $res as $row ) {
+                               $allRows[] = (array)$row;
+                       }
+
+                       $target->insert( $table, $allRows, __METHOD__, [ 'IGNORE' ] );
+               }
+       }
+
+       /**
+        * @throws MWException
+        * @since 1.18
+        */
+       protected function checkDbIsSupported() {
+               if ( !in_array( $this->db->getType(), $this->supportedDBs ) ) {
+                       throw new MWException( $this->db->getType() . " is not currently supported for unit testing." );
+               }
+       }
+
+       /**
+        * @since 1.18
+        * @param string $offset
+        * @return mixed
+        */
+       public function getCliArg( $offset ) {
+               return $this->cliArgs[$offset] ?? null;
+       }
+
+       /**
+        * @since 1.18
+        * @param string $offset
+        * @param mixed $value
+        */
+       public function setCliArg( $offset, $value ) {
+               $this->cliArgs[$offset] = $value;
+       }
+
+       /**
+        * Don't throw a warning if $function is deprecated and called later
+        *
+        * @since 1.19
+        *
+        * @param string $function
+        */
+       public function hideDeprecated( $function ) {
+               Wikimedia\suppressWarnings();
+               wfDeprecated( $function );
+               Wikimedia\restoreWarnings();
+       }
+
+       /**
+        * Asserts that the given database query yields the rows given by $expectedRows.
+        * The expected rows should be given as indexed (not associative) arrays, with
+        * the values given in the order of the columns in the $fields parameter.
+        * Note that the rows are sorted by the columns given in $fields.
+        *
+        * @since 1.20
+        *
+        * @param string|array $table The table(s) to query
+        * @param string|array $fields The columns to include in the result (and to sort by)
+        * @param string|array $condition "where" condition(s)
+        * @param array $expectedRows An array of arrays giving the expected rows.
+        * @param array $options Options for the query
+        * @param array $join_conds Join conditions for the query
+        *
+        * @throws MWException If this test cases's needsDB() method doesn't return true.
+        *         Test cases can use "@group Database" to enable database test support,
+        *         or list the tables under testing in $this->tablesUsed, or override the
+        *         needsDB() method.
+        */
+       protected function assertSelect(
+               $table, $fields, $condition, array $expectedRows, array $options = [], array $join_conds = []
+       ) {
+               if ( !$this->needsDB() ) {
+                       throw new MWException( 'When testing database state, the test cases\'s needDB()' .
+                               ' method should return true. Use @group Database or $this->tablesUsed.' );
+               }
+
+               $db = wfGetDB( DB_REPLICA );
+
+               $res = $db->select(
+                       $table,
+                       $fields,
+                       $condition,
+                       wfGetCaller(),
+                       $options + [ 'ORDER BY' => $fields ],
+                       $join_conds
+               );
+               $this->assertNotEmpty( $res, "query failed: " . $db->lastError() );
+
+               $i = 0;
+
+               foreach ( $expectedRows as $expected ) {
+                       $r = $res->fetchRow();
+                       self::stripStringKeys( $r );
+
+                       $i += 1;
+                       $this->assertNotEmpty( $r, "row #$i missing" );
+
+                       $this->assertEquals( $expected, $r, "row #$i mismatches" );
+               }
+
+               $r = $res->fetchRow();
+               self::stripStringKeys( $r );
+
+               $this->assertFalse( $r, "found extra row (after #$i)" );
+       }
+
+       /**
+        * Utility method taking an array of elements and wrapping
+        * each element in its own array. Useful for data providers
+        * that only return a single argument.
+        *
+        * @since 1.20
+        *
+        * @param array $elements
+        *
+        * @return array
+        */
+       protected function arrayWrap( array $elements ) {
+               return array_map(
+                       function ( $element ) {
+                               return [ $element ];
+                       },
+                       $elements
+               );
+       }
+
+       /**
+        * Assert that two arrays are equal. By default this means that both arrays need to hold
+        * the same set of values. Using additional arguments, order and associated key can also
+        * be set as relevant.
+        *
+        * @since 1.20
+        *
+        * @param array $expected
+        * @param array $actual
+        * @param bool $ordered If the order of the values should match
+        * @param bool $named If the keys should match
+        */
+       protected function assertArrayEquals( array $expected, array $actual,
+               $ordered = false, $named = false
+       ) {
+               if ( !$ordered ) {
+                       $this->objectAssociativeSort( $expected );
+                       $this->objectAssociativeSort( $actual );
+               }
+
+               if ( !$named ) {
+                       $expected = array_values( $expected );
+                       $actual = array_values( $actual );
+               }
+
+               call_user_func_array(
+                       [ $this, 'assertEquals' ],
+                       array_merge( [ $expected, $actual ], array_slice( func_get_args(), 4 ) )
+               );
+       }
+
+       /**
+        * Put each HTML element on its own line and then equals() the results
+        *
+        * Use for nicely formatting of PHPUnit diff output when comparing very
+        * simple HTML
+        *
+        * @since 1.20
+        *
+        * @param string $expected HTML on oneline
+        * @param string $actual HTML on oneline
+        * @param string $msg Optional message
+        */
+       protected function assertHTMLEquals( $expected, $actual, $msg = '' ) {
+               $expected = str_replace( '>', ">\n", $expected );
+               $actual = str_replace( '>', ">\n", $actual );
+
+               $this->assertEquals( $expected, $actual, $msg );
+       }
+
+       /**
+        * Does an associative sort that works for objects.
+        *
+        * @since 1.20
+        *
+        * @param array &$array
+        */
+       protected function objectAssociativeSort( array &$array ) {
+               uasort(
+                       $array,
+                       function ( $a, $b ) {
+                               return serialize( $a ) <=> serialize( $b );
+                       }
+               );
+       }
+
+       /**
+        * Utility function for eliminating all string keys from an array.
+        * Useful to turn a database result row as returned by fetchRow() into
+        * a pure indexed array.
+        *
+        * @since 1.20
+        *
+        * @param mixed &$r The array to remove string keys from.
+        */
+       protected static function stripStringKeys( &$r ) {
+               if ( !is_array( $r ) ) {
+                       return;
+               }
+
+               foreach ( $r as $k => $v ) {
+                       if ( is_string( $k ) ) {
+                               unset( $r[$k] );
+                       }
+               }
+       }
+
+       /**
+        * Asserts that the provided variable is of the specified
+        * internal type or equals the $value argument. This is useful
+        * for testing return types of functions that return a certain
+        * type or *value* when not set or on error.
+        *
+        * @since 1.20
+        *
+        * @param string $type
+        * @param mixed $actual
+        * @param mixed $value
+        * @param string $message
+        */
+       protected function assertTypeOrValue( $type, $actual, $value = false, $message = '' ) {
+               if ( $actual === $value ) {
+                       $this->assertTrue( true, $message );
+               } else {
+                       $this->assertType( $type, $actual, $message );
+               }
+       }
+
+       /**
+        * Asserts the type of the provided value. This can be either
+        * in internal type such as boolean or integer, or a class or
+        * interface the value extends or implements.
+        *
+        * @since 1.20
+        *
+        * @param string $type
+        * @param mixed $actual
+        * @param string $message
+        */
+       protected function assertType( $type, $actual, $message = '' ) {
+               if ( class_exists( $type ) || interface_exists( $type ) ) {
+                       $this->assertInstanceOf( $type, $actual, $message );
+               } else {
+                       $this->assertInternalType( $type, $actual, $message );
+               }
+       }
+
+       /**
+        * Returns true if the given namespace defaults to Wikitext
+        * according to $wgNamespaceContentModels
+        *
+        * @param int $ns The namespace ID to check
+        *
+        * @return bool
+        * @since 1.21
+        */
+       protected function isWikitextNS( $ns ) {
+               global $wgNamespaceContentModels;
+
+               if ( isset( $wgNamespaceContentModels[$ns] ) ) {
+                       return $wgNamespaceContentModels[$ns] === CONTENT_MODEL_WIKITEXT;
+               }
+
+               return true;
+       }
+
+       /**
+        * Returns the ID of a namespace that defaults to Wikitext.
+        *
+        * @throws MWException If there is none.
+        * @return int The ID of the wikitext Namespace
+        * @since 1.21
+        */
+       protected function getDefaultWikitextNS() {
+               global $wgNamespaceContentModels;
+
+               static $wikitextNS = null; // this is not going to change
+               if ( $wikitextNS !== null ) {
+                       return $wikitextNS;
+               }
+
+               // quickly short out on most common case:
+               if ( !isset( $wgNamespaceContentModels[NS_MAIN] ) ) {
+                       return NS_MAIN;
+               }
+
+               // NOTE: prefer content namespaces
+               $nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
+               $namespaces = array_unique( array_merge(
+                       $nsInfo->getContentNamespaces(),
+                       [ NS_MAIN, NS_HELP, NS_PROJECT ], // prefer these
+                       $nsInfo->getValidNamespaces()
+               ) );
+
+               $namespaces = array_diff( $namespaces, [
+                       NS_FILE, NS_CATEGORY, NS_MEDIAWIKI, NS_USER // don't mess with magic namespaces
+               ] );
+
+               $talk = array_filter( $namespaces, function ( $ns ) use ( $nsInfo ) {
+                       return $nsInfo->isTalk( $ns );
+               } );
+
+               // prefer non-talk pages
+               $namespaces = array_diff( $namespaces, $talk );
+               $namespaces = array_merge( $namespaces, $talk );
+
+               // check default content model of each namespace
+               foreach ( $namespaces as $ns ) {
+                       if ( !isset( $wgNamespaceContentModels[$ns] ) ||
+                               $wgNamespaceContentModels[$ns] === CONTENT_MODEL_WIKITEXT
+                       ) {
+                               $wikitextNS = $ns;
+
+                               return $wikitextNS;
+                       }
+               }
+
+               // give up
+               // @todo Inside a test, we could skip the test as incomplete.
+               //        But frequently, this is used in fixture setup.
+               throw new MWException( "No namespace defaults to wikitext!" );
+       }
+
+       /**
+        * Check, if $wgDiff3 is set and ready to merge
+        * Will mark the calling test as skipped, if not ready
+        *
+        * @since 1.21
+        */
+       protected function markTestSkippedIfNoDiff3() {
+               global $wgDiff3;
+
+               # This check may also protect against code injection in
+               # case of broken installations.
+               Wikimedia\suppressWarnings();
+               $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
+               Wikimedia\restoreWarnings();
+
+               if ( !$haveDiff3 ) {
+                       $this->markTestSkipped( "Skip test, since diff3 is not configured" );
+               }
+       }
+
+       /**
+        * Check if $extName is a loaded PHP extension, will skip the
+        * test whenever it is not loaded.
+        *
+        * @since 1.21
+        * @param string $extName
+        * @return bool
+        */
+       protected function checkPHPExtension( $extName ) {
+               $loaded = extension_loaded( $extName );
+               if ( !$loaded ) {
+                       $this->markTestSkipped( "PHP extension '$extName' is not loaded, skipping." );
+               }
+
+               return $loaded;
+       }
+
+       /**
+        * Skip the test if using the specified database type
+        *
+        * @param string $type Database type
+        * @since 1.32
+        */
+       protected function markTestSkippedIfDbType( $type ) {
+               if ( $this->db->getType() === $type ) {
+                       $this->markTestSkipped( "The $type database type isn't supported for this test" );
+               }
+       }
+
+       /**
+        * Used as a marker to prevent wfResetOutputBuffers from breaking PHPUnit.
+        * @param string $buffer
+        * @return string
+        */
+       public static function wfResetOutputBuffersBarrier( $buffer ) {
+               return $buffer;
+       }
+
+       /**
+        * Create a temporary hook handler which will be reset by tearDown.
+        * This replaces other handlers for the same hook.
+        * @param string $hookName Hook name
+        * @param mixed $handler Value suitable for a hook handler
+        * @since 1.28
+        */
+       protected function setTemporaryHook( $hookName, $handler ) {
+               $this->mergeMwGlobalArrayValue( 'wgHooks', [ $hookName => [ $handler ] ] );
+       }
+
+       /**
+        * Check whether file contains given data.
+        * @param string $fileName
+        * @param string $actualData
+        * @param bool $createIfMissing If true, and file does not exist, create it with given data
+        *                              and skip the test.
+        * @param string $msg
+        * @since 1.30
+        */
+       protected function assertFileContains(
+               $fileName,
+               $actualData,
+               $createIfMissing = false,
+               $msg = ''
+       ) {
+               if ( $createIfMissing ) {
+                       if ( !file_exists( $fileName ) ) {
+                               file_put_contents( $fileName, $actualData );
+                               $this->markTestSkipped( "Data file $fileName does not exist" );
+                       }
+               } else {
+                       self::assertFileExists( $fileName );
+               }
+               self::assertEquals( file_get_contents( $fileName ), $actualData, $msg );
+       }
+
+       /**
+        * Edits or creates a page/revision
+        * @param string $pageName Page title
+        * @param string $text Content of the page
+        * @param string $summary Optional summary string for the revision
+        * @param int $defaultNs Optional namespace id
+        * @param User|null $user If null, static::getTestSysop()->getUser() is used.
+        * @return Status Object as returned by WikiPage::doEditContent()
+        * @throws MWException If this test cases's needsDB() method doesn't return true.
+        *         Test cases can use "@group Database" to enable database test support,
+        *         or list the tables under testing in $this->tablesUsed, or override the
+        *         needsDB() method.
+        */
+       protected function editPage(
+               $pageName,
+               $text,
+               $summary = '',
+               $defaultNs = NS_MAIN,
+               User $user = null
+       ) {
+               if ( !$this->needsDB() ) {
+                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
+                               ' method should return true. Use @group Database or $this->tablesUsed.' );
+               }
+
+               $title = Title::newFromText( $pageName, $defaultNs );
+               $page = WikiPage::factory( $title );
+
+               return $page->doEditContent(
+                       ContentHandler::makeContent( $text, $title ),
+                       $summary,
+                       0,
+                       false,
+                       $user
+               );
+       }
+
+       /**
+        * Revision-deletes a revision.
+        *
+        * @param Revision|int $rev Revision to delete
+        * @param array $value Keys are Revision::DELETED_* flags.  Values are 1 to set the bit, 0 to
+        *   clear, -1 to leave alone.  (All other values also clear the bit.)
+        * @param string $comment Deletion comment
+        */
+       protected function revisionDelete(
+               $rev, array $value = [ Revision::DELETED_TEXT => 1 ], $comment = ''
+       ) {
+               if ( is_int( $rev ) ) {
+                       $rev = Revision::newFromId( $rev );
+               }
+               RevisionDeleter::createList(
+                       'revision', RequestContext::getMain(), $rev->getTitle(), [ $rev->getId() ]
+               )->setVisibility( [
+                       'value' => $value,
+                       'comment' => $comment,
+               ] );
+       }
+
+       /**
+        * Returns a PHPUnit constraint that matches anything other than a fixed set of values. This can
+        * be used to whitelist values, e.g.
+        *   $mock->expects( $this->never() )->method( $this->anythingBut( 'foo', 'bar' ) );
+        * which will throw if any unexpected method is called.
+        *
+        * @param mixed ...$values Values that are not matched
+        */
+       protected function anythingBut( ...$values ) {
+               return $this->logicalNot( $this->logicalOr(
+                       ...array_map( [ $this, 'matches' ], $values )
+               ) );
+       }
+}
+
+class_alias( 'MediaWikiIntegrationTestCase', 'MediaWikiTestCase' );
diff --git a/tests/phpunit/MediaWikiTestCase.php b/tests/phpunit/MediaWikiTestCase.php
deleted file mode 100644 (file)
index d46a4da..0000000
+++ /dev/null
@@ -1,2524 +0,0 @@
-<?php
-
-use MediaWiki\Logger\LegacySpi;
-use MediaWiki\Logger\LoggerFactory;
-use MediaWiki\Logger\MonologSpi;
-use MediaWiki\Logger\LogCapturingSpi;
-use MediaWiki\MediaWikiServices;
-use Psr\Log\LoggerInterface;
-use Wikimedia\Rdbms\IDatabase;
-use Wikimedia\Rdbms\IMaintainableDatabase;
-use Wikimedia\Rdbms\Database;
-use Wikimedia\TestingAccessWrapper;
-
-/**
- * @since 1.18
- */
-abstract class MediaWikiTestCase extends PHPUnit\Framework\TestCase {
-
-       use MediaWikiCoversValidator;
-       use PHPUnit4And6Compat;
-
-       /**
-        * The original service locator. This is overridden during setUp().
-        *
-        * @var MediaWikiServices|null
-        */
-       private static $originalServices;
-
-       /**
-        * The local service locator, created during setUp().
-        * @var MediaWikiServices
-        */
-       private $localServices;
-
-       /**
-        * $called tracks whether the setUp and tearDown method has been called.
-        * class extending MediaWikiTestCase usually override setUp and tearDown
-        * but forget to call the parent.
-        *
-        * The array format takes a method name as key and anything as a value.
-        * By asserting the key exist, we know the child class has called the
-        * parent.
-        *
-        * This property must be private, we do not want child to override it,
-        * they should call the appropriate parent method instead.
-        */
-       private $called = [];
-
-       /**
-        * @var TestUser[]
-        * @since 1.20
-        */
-       public static $users;
-
-       /**
-        * Primary database
-        *
-        * @var Database
-        * @since 1.18
-        */
-       protected $db;
-
-       /**
-        * @var array
-        * @since 1.19
-        */
-       protected $tablesUsed = []; // tables with data
-
-       private static $useTemporaryTables = true;
-       private static $reuseDB = false;
-       private static $dbSetup = false;
-       private static $oldTablePrefix = '';
-
-       /**
-        * Original value of PHP's error_reporting setting.
-        *
-        * @var int
-        */
-       private $phpErrorLevel;
-
-       /**
-        * Holds the paths of temporary files/directories created through getNewTempFile,
-        * and getNewTempDirectory
-        *
-        * @var array
-        */
-       private $tmpFiles = [];
-
-       /**
-        * Holds original values of MediaWiki configuration settings
-        * to be restored in tearDown().
-        * See also setMwGlobals().
-        * @var array
-        */
-       private $mwGlobals = [];
-
-       /**
-        * Holds list of MediaWiki configuration settings to be unset in tearDown().
-        * See also setMwGlobals().
-        * @var array
-        */
-       private $mwGlobalsToUnset = [];
-
-       /**
-        * Holds original values of ini settings to be restored
-        * in tearDown().
-        * @see setIniSettings()
-        * @var array
-        */
-       private $iniSettings = [];
-
-       /**
-        * Holds original loggers which have been replaced by setLogger()
-        * @var LoggerInterface[]
-        */
-       private $loggers = [];
-
-       /**
-        * The CLI arguments passed through from phpunit.php
-        * @var array
-        */
-       private $cliArgs = [];
-
-       /**
-        * Holds a list of services that were overridden with setService().  Used for printing an error
-        * if overrideMwServices() overrides a service that was previously set.
-        * @var string[]
-        */
-       private $overriddenServices = [];
-
-       /**
-        * Table name prefixes. Oracle likes it shorter.
-        */
-       const DB_PREFIX = 'unittest_';
-       const ORA_DB_PREFIX = 'ut_';
-
-       /**
-        * @var array
-        * @since 1.18
-        */
-       protected $supportedDBs = [
-               'mysql',
-               'sqlite',
-               'postgres',
-               'oracle'
-       ];
-
-       public function __construct( $name = null, array $data = [], $dataName = '' ) {
-               parent::__construct( $name, $data, $dataName );
-
-               $this->backupGlobals = false;
-               $this->backupStaticAttributes = false;
-       }
-
-       public function __destruct() {
-               // Complain if self::setUp() was called, but not self::tearDown()
-               // $this->called['setUp'] will be checked by self::testMediaWikiTestCaseParentSetupCalled()
-               if ( isset( $this->called['setUp'] ) && !isset( $this->called['tearDown'] ) ) {
-                       throw new MWException( static::class . "::tearDown() must call parent::tearDown()" );
-               }
-       }
-
-       public static function setUpBeforeClass() {
-               parent::setUpBeforeClass();
-
-               // Get the original service locator
-               if ( !self::$originalServices ) {
-                       self::$originalServices = MediaWikiServices::getInstance();
-               }
-       }
-
-       /**
-        * Convenience method for getting an immutable test user
-        *
-        * @since 1.28
-        *
-        * @param string|string[] $groups Groups the test user should be in.
-        * @return TestUser
-        */
-       public static function getTestUser( $groups = [] ) {
-               return TestUserRegistry::getImmutableTestUser( $groups );
-       }
-
-       /**
-        * Convenience method for getting a mutable test user
-        *
-        * @since 1.28
-        *
-        * @param string|string[] $groups Groups the test user should be added in.
-        * @return TestUser
-        */
-       public static function getMutableTestUser( $groups = [] ) {
-               return TestUserRegistry::getMutableTestUser( __CLASS__, $groups );
-       }
-
-       /**
-        * Convenience method for getting an immutable admin test user
-        *
-        * @since 1.28
-        *
-        * @param string[] $groups Groups the test user should be added to.
-        * @return TestUser
-        */
-       public static function getTestSysop() {
-               return self::getTestUser( [ 'sysop', 'bureaucrat' ] );
-       }
-
-       /**
-        * Returns a WikiPage representing an existing page.
-        *
-        * @since 1.32
-        *
-        * @param Title|string|null $title
-        * @return WikiPage
-        * @throws MWException If this test cases's needsDB() method doesn't return true.
-        *         Test cases can use "@group Database" to enable database test support,
-        *         or list the tables under testing in $this->tablesUsed, or override the
-        *         needsDB() method.
-        */
-       protected function getExistingTestPage( $title = null ) {
-               if ( !$this->needsDB() ) {
-                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
-                               ' method should return true. Use @group Database or $this->tablesUsed.' );
-               }
-
-               $title = ( $title === null ) ? 'UTPage' : $title;
-               $title = is_string( $title ) ? Title::newFromText( $title ) : $title;
-               $page = WikiPage::factory( $title );
-
-               if ( !$page->exists() ) {
-                       $user = self::getTestSysop()->getUser();
-                       $page->doEditContent(
-                               new WikitextContent( 'UTContent' ),
-                               'UTPageSummary',
-                               EDIT_NEW | EDIT_SUPPRESS_RC,
-                               false,
-                               $user
-                       );
-               }
-
-               return $page;
-       }
-
-       /**
-        * Returns a WikiPage representing a non-existing page.
-        *
-        * @since 1.32
-        *
-        * @param Title|string|null $title
-        * @return WikiPage
-        * @throws MWException If this test cases's needsDB() method doesn't return true.
-        *         Test cases can use "@group Database" to enable database test support,
-        *         or list the tables under testing in $this->tablesUsed, or override the
-        *         needsDB() method.
-        */
-       protected function getNonexistingTestPage( $title = null ) {
-               if ( !$this->needsDB() ) {
-                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
-                               ' method should return true. Use @group Database or $this->tablesUsed.' );
-               }
-
-               $title = ( $title === null ) ? 'UTPage-' . rand( 0, 100000 ) : $title;
-               $title = is_string( $title ) ? Title::newFromText( $title ) : $title;
-               $page = WikiPage::factory( $title );
-
-               if ( $page->exists() ) {
-                       $page->doDeleteArticle( 'Testing' );
-               }
-
-               return $page;
-       }
-
-       /**
-        * @deprecated since 1.32
-        */
-       public static function prepareServices( Config $bootstrapConfig ) {
-       }
-
-       /**
-        * Create a config suitable for testing, based on a base config, default overrides,
-        * and custom overrides.
-        *
-        * @param Config|null $baseConfig
-        * @param Config|null $customOverrides
-        *
-        * @return Config
-        */
-       private static function makeTestConfig(
-               Config $baseConfig = null,
-               Config $customOverrides = null
-       ) {
-               $defaultOverrides = new HashConfig();
-
-               if ( !$baseConfig ) {
-                       $baseConfig = self::$originalServices->getBootstrapConfig();
-               }
-
-               /* Some functions require some kind of caching, and will end up using the db,
-                * which we can't allow, as that would open a new connection for mysql.
-                * Replace with a HashBag. They would not be going to persist anyway.
-                */
-               $hashCache = [ 'class' => HashBagOStuff::class, 'reportDupes' => false ];
-               $objectCaches = [
-                               CACHE_DB => $hashCache,
-                               CACHE_ACCEL => $hashCache,
-                               CACHE_MEMCACHED => $hashCache,
-                               'apc' => $hashCache,
-                               'apcu' => $hashCache,
-                               'wincache' => $hashCache,
-                       ] + $baseConfig->get( 'ObjectCaches' );
-
-               $defaultOverrides->set( 'ObjectCaches', $objectCaches );
-               $defaultOverrides->set( 'MainCacheType', CACHE_NONE );
-               $defaultOverrides->set( 'JobTypeConf', [ 'default' => [ 'class' => JobQueueMemory::class ] ] );
-
-               // Use a fast hash algorithm to hash passwords.
-               $defaultOverrides->set( 'PasswordDefault', 'A' );
-
-               $testConfig = $customOverrides
-                       ? new MultiConfig( [ $customOverrides, $defaultOverrides, $baseConfig ] )
-                       : new MultiConfig( [ $defaultOverrides, $baseConfig ] );
-
-               return $testConfig;
-       }
-
-       /**
-        * @param ConfigFactory $oldFactory
-        * @param Config[] $configurations
-        *
-        * @return Closure
-        */
-       private static function makeTestConfigFactoryInstantiator(
-               ConfigFactory $oldFactory,
-               array $configurations
-       ) {
-               return function ( MediaWikiServices $services ) use ( $oldFactory, $configurations ) {
-                       $factory = new ConfigFactory();
-
-                       // clone configurations from $oldFactory that are not overwritten by $configurations
-                       $namesToClone = array_diff(
-                               $oldFactory->getConfigNames(),
-                               array_keys( $configurations )
-                       );
-
-                       foreach ( $namesToClone as $name ) {
-                               $factory->register( $name, $oldFactory->makeConfig( $name ) );
-                       }
-
-                       foreach ( $configurations as $name => $config ) {
-                               $factory->register( $name, $config );
-                       }
-
-                       return $factory;
-               };
-       }
-
-       /**
-        * Resets some non-service singleton instances and other static caches. It's not necessary to
-        * reset services here.
-        */
-       public static function resetNonServiceCaches() {
-               global $wgRequest, $wgJobClasses;
-
-               User::resetGetDefaultOptionsForTestsOnly();
-               foreach ( $wgJobClasses as $type => $class ) {
-                       JobQueueGroup::singleton()->get( $type )->delete();
-               }
-               JobQueueGroup::destroySingletons();
-
-               ObjectCache::clear();
-               FileBackendGroup::destroySingleton();
-               DeferredUpdates::clearPendingUpdates();
-
-               // TODO: move global state into MediaWikiServices
-               RequestContext::resetMain();
-               if ( session_id() !== '' ) {
-                       session_write_close();
-                       session_id( '' );
-               }
-
-               $wgRequest = new FauxRequest();
-               MediaWiki\Session\SessionManager::resetCache();
-       }
-
-       public function run( PHPUnit_Framework_TestResult $result = null ) {
-               if ( $result instanceof MediaWikiTestResult ) {
-                       $this->cliArgs = $result->getMediaWikiCliArgs();
-               }
-               $this->overrideMwServices();
-
-               if ( $this->needsDB() && !$this->isTestInDatabaseGroup() ) {
-                       throw new Exception(
-                               get_class( $this ) . ' apparently needsDB but is not in the Database group'
-                       );
-               }
-
-               $needsResetDB = false;
-               if ( !self::$dbSetup || $this->needsDB() ) {
-                       // set up a DB connection for this test to use
-
-                       self::$useTemporaryTables = !$this->getCliArg( 'use-normal-tables' );
-                       self::$reuseDB = $this->getCliArg( 'reuse-db' );
-
-                       $lb = MediaWikiServices::getInstance()->getDBLoadBalancer();
-                       $this->db = $lb->getConnection( DB_MASTER );
-
-                       $this->checkDbIsSupported();
-
-                       if ( !self::$dbSetup ) {
-                               $this->setupAllTestDBs();
-                               $this->addCoreDBData();
-                       }
-
-                       // TODO: the DB setup should be done in setUpBeforeClass(), so the test DB
-                       // is available in subclass's setUpBeforeClass() and setUp() methods.
-                       // This would also remove the need for the HACK that is oncePerClass().
-                       if ( $this->oncePerClass() ) {
-                               $this->setUpSchema( $this->db );
-                               $this->resetDB( $this->db, $this->tablesUsed );
-                               $this->addDBDataOnce();
-                       }
-
-                       $this->addDBData();
-                       $needsResetDB = true;
-               }
-
-               parent::run( $result );
-
-               // We don't mind if we override already-overridden services during cleanup
-               $this->overriddenServices = [];
-
-               if ( $needsResetDB ) {
-                       $this->resetDB( $this->db, $this->tablesUsed );
-               }
-
-               self::restoreMwServices();
-               $this->localServices = null;
-       }
-
-       /**
-        * @return bool
-        */
-       private function oncePerClass() {
-               // Remember current test class in the database connection,
-               // so we know when we need to run addData.
-
-               $class = static::class;
-
-               $first = !isset( $this->db->_hasDataForTestClass )
-                       || $this->db->_hasDataForTestClass !== $class;
-
-               $this->db->_hasDataForTestClass = $class;
-               return $first;
-       }
-
-       /**
-        * @since 1.21
-        *
-        * @return bool
-        */
-       public function usesTemporaryTables() {
-               return self::$useTemporaryTables;
-       }
-
-       /**
-        * Obtains a new temporary file name
-        *
-        * The obtained filename is enlisted to be removed upon tearDown
-        *
-        * @since 1.20
-        *
-        * @return string Absolute name of the temporary file
-        */
-       protected function getNewTempFile() {
-               $fileName = tempnam(
-                       wfTempDir(),
-                       // Avoid backslashes here as they result in inconsistent results
-                       // between Windows and other OS, as well as between functions
-                       // that try to normalise these in one or both directions.
-                       // For example, tempnam rejects directory separators in the prefix which
-                       // means it rejects any namespaced class on Windows.
-                       // And then there is, wfMkdirParents which normalises paths always
-                       // whereas most other PHP and MW functions do not.
-                       'MW_PHPUnit_' . strtr( static::class, [ '\\' => '_' ] ) . '_'
-               );
-               $this->tmpFiles[] = $fileName;
-
-               return $fileName;
-       }
-
-       /**
-        * obtains a new temporary directory
-        *
-        * The obtained directory is enlisted to be removed (recursively with all its contained
-        * files) upon tearDown.
-        *
-        * @since 1.20
-        *
-        * @return string Absolute name of the temporary directory
-        */
-       protected function getNewTempDirectory() {
-               // Starting of with a temporary *file*.
-               $fileName = $this->getNewTempFile();
-
-               // Converting the temporary file to a *directory*.
-               // The following is not atomic, but at least we now have a single place,
-               // where temporary directory creation is bundled and can be improved.
-               unlink( $fileName );
-               // If this fails for some reason, PHP will warn and fail the test.
-               mkdir( $fileName, 0777, /* recursive = */ true );
-
-               return $fileName;
-       }
-
-       protected function setUp() {
-               parent::setUp();
-               $this->called['setUp'] = true;
-
-               $this->phpErrorLevel = intval( ini_get( 'error_reporting' ) );
-
-               $this->overriddenServices = [];
-
-               // Cleaning up temporary files
-               foreach ( $this->tmpFiles as $fileName ) {
-                       if ( is_file( $fileName ) || ( is_link( $fileName ) ) ) {
-                               unlink( $fileName );
-                       } elseif ( is_dir( $fileName ) ) {
-                               wfRecursiveRemoveDir( $fileName );
-                       }
-               }
-
-               if ( $this->needsDB() && $this->db ) {
-                       // Clean up open transactions
-                       while ( $this->db->trxLevel() > 0 ) {
-                               $this->db->rollback( __METHOD__, 'flush' );
-                       }
-                       // Check for unsafe queries
-                       if ( $this->db->getType() === 'mysql' ) {
-                               $this->db->query( "SET sql_mode = 'STRICT_ALL_TABLES'", __METHOD__ );
-                       }
-               }
-
-               // Reset all caches between tests.
-               self::resetNonServiceCaches();
-
-               // XXX: reset maintenance triggers
-               // Hook into period lag checks which often happen in long-running scripts
-               $lbFactory = $this->localServices->getDBLoadBalancerFactory();
-               Maintenance::setLBFactoryTriggers( $lbFactory, $this->localServices->getMainConfig() );
-
-               ob_start( 'MediaWikiTestCase::wfResetOutputBuffersBarrier' );
-       }
-
-       protected function addTmpFiles( $files ) {
-               $this->tmpFiles = array_merge( $this->tmpFiles, (array)$files );
-       }
-
-       // @todo Make const when we no longer support HHVM (T192166)
-       private static $namespaceAffectingSettings = [
-               'wgAllowImageMoving',
-               'wgCanonicalNamespaceNames',
-               'wgCapitalLinkOverrides',
-               'wgCapitalLinks',
-               'wgContentNamespaces',
-               'wgExtensionMessagesFiles',
-               'wgExtensionNamespaces',
-               'wgExtraNamespaces',
-               'wgExtraSignatureNamespaces',
-               'wgNamespaceContentModels',
-               'wgNamespaceProtection',
-               'wgNamespacesWithSubpages',
-               'wgNonincludableNamespaces',
-               'wgRestrictionLevels',
-       ];
-
-       protected function tearDown() {
-               global $wgRequest, $wgSQLMode;
-
-               $status = ob_get_status();
-               if ( isset( $status['name'] ) &&
-                       $status['name'] === 'MediaWikiTestCase::wfResetOutputBuffersBarrier'
-               ) {
-                       ob_end_flush();
-               }
-
-               $this->called['tearDown'] = true;
-               // Cleaning up temporary files
-               foreach ( $this->tmpFiles as $fileName ) {
-                       if ( is_file( $fileName ) || ( is_link( $fileName ) ) ) {
-                               unlink( $fileName );
-                       } elseif ( is_dir( $fileName ) ) {
-                               wfRecursiveRemoveDir( $fileName );
-                       }
-               }
-
-               if ( $this->needsDB() && $this->db ) {
-                       // Clean up open transactions
-                       while ( $this->db->trxLevel() > 0 ) {
-                               $this->db->rollback( __METHOD__, 'flush' );
-                       }
-                       if ( $this->db->getType() === 'mysql' ) {
-                               $this->db->query( "SET sql_mode = " . $this->db->addQuotes( $wgSQLMode ),
-                                       __METHOD__ );
-                       }
-               }
-
-               // Re-enable any disabled deprecation warnings
-               MWDebug::clearLog();
-               // Restore mw globals
-               foreach ( $this->mwGlobals as $key => $value ) {
-                       $GLOBALS[$key] = $value;
-               }
-               foreach ( $this->mwGlobalsToUnset as $value ) {
-                       unset( $GLOBALS[$value] );
-               }
-               foreach ( $this->iniSettings as $name => $value ) {
-                       ini_set( $name, $value );
-               }
-               if (
-                       array_intersect( self::$namespaceAffectingSettings, array_keys( $this->mwGlobals ) ) ||
-                       array_intersect( self::$namespaceAffectingSettings, $this->mwGlobalsToUnset )
-               ) {
-                       $this->resetNamespaces();
-               }
-               $this->mwGlobals = [];
-               $this->mwGlobalsToUnset = [];
-               $this->restoreLoggers();
-
-               // TODO: move global state into MediaWikiServices
-               RequestContext::resetMain();
-               if ( session_id() !== '' ) {
-                       session_write_close();
-                       session_id( '' );
-               }
-               $wgRequest = new FauxRequest();
-               MediaWiki\Session\SessionManager::resetCache();
-               MediaWiki\Auth\AuthManager::resetCache();
-
-               $phpErrorLevel = intval( ini_get( 'error_reporting' ) );
-
-               if ( $phpErrorLevel !== $this->phpErrorLevel ) {
-                       ini_set( 'error_reporting', $this->phpErrorLevel );
-
-                       $oldHex = strtoupper( dechex( $this->phpErrorLevel ) );
-                       $newHex = strtoupper( dechex( $phpErrorLevel ) );
-                       $message = "PHP error_reporting setting was left dirty: "
-                               . "was 0x$oldHex before test, 0x$newHex after test!";
-
-                       $this->fail( $message );
-               }
-
-               parent::tearDown();
-       }
-
-       /**
-        * Make sure MediaWikiTestCase extending classes have called their
-        * parent setUp method
-        *
-        * With strict coverage activated in PHP_CodeCoverage, this test would be
-        * marked as risky without the following annotation (T152923).
-        * @coversNothing
-        */
-       final public function testMediaWikiTestCaseParentSetupCalled() {
-               $this->assertArrayHasKey( 'setUp', $this->called,
-                       static::class . '::setUp() must call parent::setUp()'
-               );
-       }
-
-       /**
-        * Sets a service, maintaining a stashed version of the previous service to be
-        * restored in tearDown.
-        *
-        * @note Tests must not call overrideMwServices() after calling setService(), since that would
-        *       lose the new service instance. Since 1.34, resetServices() can be used instead, which
-        *       would reset other services, but retain any services set using setService().
-        *       This means that once a service is set using this method, it cannot be reverted to
-        *       the original service within the same test method. The original service is restored
-        *       in tearDown after the test method has terminated.
-        *
-        * @param string $name
-        * @param object $service The service instance, or a callable that returns the service instance.
-        *
-        * @since 1.27
-        *
-        */
-       protected function setService( $name, $service ) {
-               if ( !$this->localServices ) {
-                       throw new Exception( __METHOD__ . ' must be called after MediaWikiTestCase::run()' );
-               }
-
-               if ( $this->localServices !== MediaWikiServices::getInstance() ) {
-                       throw new Exception( __METHOD__ . ' will not work because the global MediaWikiServices '
-                               . 'instance has been replaced by test code.' );
-               }
-
-               if ( is_callable( $service ) ) {
-                       $instantiator = $service;
-               } else {
-                       $instantiator = function () use ( $service ) {
-                               return $service;
-                       };
-               }
-
-               $this->overriddenServices[] = $name;
-
-               $this->localServices->disableService( $name );
-               $this->localServices->redefineService(
-                       $name,
-                       $instantiator
-               );
-
-               if ( $name === 'ContentLanguage' ) {
-                       $this->doSetMwGlobals( [ 'wgContLang' => $this->localServices->getContentLanguage() ] );
-               }
-       }
-
-       /**
-        * Sets a global, maintaining a stashed version of the previous global to be
-        * restored in tearDown
-        *
-        * The key is added to the array of globals that will be reset afterwards
-        * in the tearDown().
-        *
-        * It may be necessary to call resetServices() to allow any changed configuration variables
-        * to take effect on services that get initialized based on these variables.
-        *
-        * @par Example
-        * @code
-        *     protected function setUp() {
-        *         $this->setMwGlobals( 'wgRestrictStuff', true );
-        *     }
-        *
-        *     function testFoo() {}
-        *
-        *     function testBar() {}
-        *         $this->assertTrue( self::getX()->doStuff() );
-        *
-        *         $this->setMwGlobals( 'wgRestrictStuff', false );
-        *         $this->assertTrue( self::getX()->doStuff() );
-        *     }
-        *
-        *     function testQuux() {}
-        * @endcode
-        *
-        * @param array|string $pairs Key to the global variable, or an array
-        *  of key/value pairs.
-        * @param mixed|null $value Value to set the global to (ignored
-        *  if an array is given as first argument).
-        *
-        * @note To allow changes to global variables to take effect on global service instances,
-        *       call resetServices().
-        *
-        * @since 1.21
-        */
-       protected function setMwGlobals( $pairs, $value = null ) {
-               if ( is_string( $pairs ) ) {
-                       $pairs = [ $pairs => $value ];
-               }
-
-               if ( isset( $pairs['wgContLang'] ) ) {
-                       throw new MWException(
-                               'No setting $wgContLang, use setContentLang() or setService( \'ContentLanguage\' )'
-                       );
-               }
-
-               $this->doSetMwGlobals( $pairs, $value );
-       }
-
-       /**
-        * An internal method that allows setService() to set globals that tests are not supposed to
-        * touch.
-        */
-       private function doSetMwGlobals( $pairs, $value = null ) {
-               $this->doStashMwGlobals( array_keys( $pairs ) );
-
-               foreach ( $pairs as $key => $value ) {
-                       $GLOBALS[$key] = $value;
-               }
-
-               if ( array_intersect( self::$namespaceAffectingSettings, array_keys( $pairs ) ) ) {
-                       $this->resetNamespaces();
-               }
-       }
-
-       /**
-        * Set an ini setting for the duration of the test
-        * @param string $name Name of the setting
-        * @param string $value Value to set
-        * @since 1.32
-        */
-       protected function setIniSetting( $name, $value ) {
-               $original = ini_get( $name );
-               $this->iniSettings[$name] = $original;
-               ini_set( $name, $value );
-       }
-
-       /**
-        * Must be called whenever namespaces are changed, e.g., $wgExtraNamespaces is altered.
-        * Otherwise old namespace data will lurk and cause bugs.
-        */
-       private function resetNamespaces() {
-               if ( !$this->localServices ) {
-                       throw new Exception( __METHOD__ . ' must be called after MediaWikiTestCase::run()' );
-               }
-
-               if ( $this->localServices !== MediaWikiServices::getInstance() ) {
-                       throw new Exception( __METHOD__ . ' will not work because the global MediaWikiServices '
-                               . 'instance has been replaced by test code.' );
-               }
-
-               Language::clearCaches();
-       }
-
-       /**
-        * Check if we can back up a value by performing a shallow copy.
-        * Values which fail this test are copied recursively.
-        *
-        * @param mixed $value
-        * @return bool True if a shallow copy will do; false if a deep copy
-        *  is required.
-        */
-       private static function canShallowCopy( $value ) {
-               if ( is_scalar( $value ) || $value === null ) {
-                       return true;
-               }
-               if ( is_array( $value ) ) {
-                       foreach ( $value as $subValue ) {
-                               if ( !is_scalar( $subValue ) && $subValue !== null ) {
-                                       return false;
-                               }
-                       }
-                       return true;
-               }
-               return false;
-       }
-
-       private function doStashMwGlobals( $globalKeys ) {
-               if ( is_string( $globalKeys ) ) {
-                       $globalKeys = [ $globalKeys ];
-               }
-
-               foreach ( $globalKeys as $globalKey ) {
-                       // NOTE: make sure we only save the global once or a second call to
-                       // setMwGlobals() on the same global would override the original
-                       // value.
-                       if (
-                               !array_key_exists( $globalKey, $this->mwGlobals ) &&
-                               !array_key_exists( $globalKey, $this->mwGlobalsToUnset )
-                       ) {
-                               if ( !array_key_exists( $globalKey, $GLOBALS ) ) {
-                                       $this->mwGlobalsToUnset[$globalKey] = $globalKey;
-                                       continue;
-                               }
-                               // NOTE: we serialize then unserialize the value in case it is an object
-                               // this stops any objects being passed by reference. We could use clone
-                               // and if is_object but this does account for objects within objects!
-                               if ( self::canShallowCopy( $GLOBALS[$globalKey] ) ) {
-                                       $this->mwGlobals[$globalKey] = $GLOBALS[$globalKey];
-                               } elseif (
-                                       // Many MediaWiki types are safe to clone. These are the
-                                       // ones that are most commonly stashed.
-                                       $GLOBALS[$globalKey] instanceof Language ||
-                                       $GLOBALS[$globalKey] instanceof User ||
-                                       $GLOBALS[$globalKey] instanceof FauxRequest
-                               ) {
-                                       $this->mwGlobals[$globalKey] = clone $GLOBALS[$globalKey];
-                               } elseif ( $this->containsClosure( $GLOBALS[$globalKey] ) ) {
-                                       // Serializing Closure only gives a warning on HHVM while
-                                       // it throws an Exception on Zend.
-                                       // Workaround for https://github.com/facebook/hhvm/issues/6206
-                                       $this->mwGlobals[$globalKey] = $GLOBALS[$globalKey];
-                               } else {
-                                       try {
-                                               $this->mwGlobals[$globalKey] = unserialize( serialize( $GLOBALS[$globalKey] ) );
-                                       } catch ( Exception $e ) {
-                                               $this->mwGlobals[$globalKey] = $GLOBALS[$globalKey];
-                                       }
-                               }
-                       }
-               }
-       }
-
-       /**
-        * @param mixed $var
-        * @param int $maxDepth
-        *
-        * @return bool
-        */
-       private function containsClosure( $var, $maxDepth = 15 ) {
-               if ( $var instanceof Closure ) {
-                       return true;
-               }
-               if ( !is_array( $var ) || $maxDepth === 0 ) {
-                       return false;
-               }
-
-               foreach ( $var as $value ) {
-                       if ( $this->containsClosure( $value, $maxDepth - 1 ) ) {
-                               return true;
-                       }
-               }
-               return false;
-       }
-
-       /**
-        * Merges the given values into a MW global array variable.
-        * Useful for setting some entries in a configuration array, instead of
-        * setting the entire array.
-        *
-        * It may be necessary to call resetServices() to allow any changed configuration variables
-        * to take effect on services that get initialized based on these variables.
-        *
-        * @param string $name The name of the global, as in wgFooBar
-        * @param array $values The array containing the entries to set in that global
-        *
-        * @throws MWException If the designated global is not an array.
-        *
-        * @note To allow changes to global variables to take effect on global service instances,
-        *       call resetServices().
-        *
-        * @since 1.21
-        */
-       protected function mergeMwGlobalArrayValue( $name, $values ) {
-               if ( !isset( $GLOBALS[$name] ) ) {
-                       $merged = $values;
-               } else {
-                       if ( !is_array( $GLOBALS[$name] ) ) {
-                               throw new MWException( "MW global $name is not an array." );
-                       }
-
-                       // NOTE: do not use array_merge, it screws up for numeric keys.
-                       $merged = $GLOBALS[$name];
-                       foreach ( $values as $k => $v ) {
-                               $merged[$k] = $v;
-                       }
-               }
-
-               $this->setMwGlobals( $name, $merged );
-       }
-
-       /**
-        * Resets service instances in the global instance of MediaWikiServices.
-        *
-        * In contrast to overrideMwServices(), this does not create a new MediaWikiServices instance,
-        * and it preserves any service instances set via setService().
-        *
-        * The primary use case for this method is to allow changes to global configuration variables
-        * to take effect on services that get initialized based on these global configuration
-        * variables. Similarly, it may be necessary to call resetServices() after calling setService(),
-        * so the newly set service gets picked up by any other service definitions that may use it.
-        *
-        * @see MediaWikiServices::resetServiceForTesting.
-        *
-        * @since 1.34
-        */
-       protected function resetServices() {
-               // Reset but don't destroy service instances supplied via setService().
-               foreach ( $this->overriddenServices as $name ) {
-                       $this->localServices->resetServiceForTesting( $name, false );
-               }
-
-               // Reset all services with the destroy flag set.
-               // This will not have any effect on services that had already been reset above.
-               foreach ( $this->localServices->getServiceNames() as $name ) {
-                       $this->localServices->resetServiceForTesting( $name, true );
-               }
-
-               self::resetGlobalParser();
-       }
-
-       /**
-        * Installs a new global instance of MediaWikiServices, allowing test cases to override
-        * settings and services.
-        *
-        * This method can be used to set up specific services or configuration as a fixture.
-        * It should not be used to reset services in between stages of a test - instead, the test
-        * should either be split, or resetServices() should be used.
-        *
-        * If called with no parameters, this method restores all services to their default state.
-        * This is done automatically before each test to isolate tests from any modification
-        * to settings and services that may have been applied by previous tests.
-        * That means that the effect of calling overrideMwServices() is undone before the next
-        * call to a test method.
-        *
-        * @note Calling this after having called setService() in the same test method (or the
-        *       associated setUp) will result in an MWException.
-        *       Tests should use either overrideMwServices() or setService(), but not mix both.
-        *       Since 1.34, resetServices() is available as an alternative compatible with setService().
-        *
-        * @since 1.27
-        *
-        * @param Config|null $configOverrides Configuration overrides for the new MediaWikiServices
-        *        instance.
-        * @param callable[] $services An associative array of services to re-define. Keys are service
-        *        names, values are callables.
-        *
-        * @return MediaWikiServices
-        * @throws MWException
-        */
-       protected function overrideMwServices(
-               Config $configOverrides = null, array $services = []
-       ) {
-               if ( $this->overriddenServices ) {
-                       throw new MWException(
-                               'The following services were set and are now being unset by overrideMwServices: ' .
-                                       implode( ', ', $this->overriddenServices )
-                       );
-               }
-               $newInstance = self::installMockMwServices( $configOverrides );
-
-               if ( $this->localServices ) {
-                       $this->localServices->destroy();
-               }
-
-               $this->localServices = $newInstance;
-
-               foreach ( $services as $name => $callback ) {
-                       $newInstance->redefineService( $name, $callback );
-               }
-
-               self::resetGlobalParser();
-
-               return $newInstance;
-       }
-
-       /**
-        * Creates a new "mock" MediaWikiServices instance, and installs it.
-        * This effectively resets all cached states in services, with the exception of
-        * the ConfigFactory and the DBLoadBalancerFactory service, which are inherited from
-        * the original MediaWikiServices.
-        *
-        * @note The new original MediaWikiServices instance can later be restored by calling
-        * restoreMwServices(). That original is determined by the first call to this method, or
-        * by setUpBeforeClass, whichever is called first. The caller is responsible for managing
-        * and, when appropriate, destroying any other MediaWikiServices instances that may get
-        * replaced when calling this method.
-        *
-        * @param Config|null $configOverrides Configuration overrides for the new MediaWikiServices
-        *        instance.
-        *
-        * @return MediaWikiServices the new mock service locator.
-        */
-       public static function installMockMwServices( Config $configOverrides = null ) {
-               // Make sure we have the original service locator
-               if ( !self::$originalServices ) {
-                       self::$originalServices = MediaWikiServices::getInstance();
-               }
-
-               if ( !$configOverrides ) {
-                       $configOverrides = new HashConfig();
-               }
-
-               $oldConfigFactory = self::$originalServices->getConfigFactory();
-               $oldLoadBalancerFactory = self::$originalServices->getDBLoadBalancerFactory();
-
-               $testConfig = self::makeTestConfig( null, $configOverrides );
-               $newServices = new MediaWikiServices( $testConfig );
-
-               // Load the default wiring from the specified files.
-               // NOTE: this logic mirrors the logic in MediaWikiServices::newInstance.
-               $wiringFiles = $testConfig->get( 'ServiceWiringFiles' );
-               $newServices->loadWiringFiles( $wiringFiles );
-
-               // Provide a traditional hook point to allow extensions to configure services.
-               Hooks::run( 'MediaWikiServices', [ $newServices ] );
-
-               // Use bootstrap config for all configuration.
-               // This allows config overrides via global variables to take effect.
-               $bootstrapConfig = $newServices->getBootstrapConfig();
-               $newServices->resetServiceForTesting( 'ConfigFactory' );
-               $newServices->redefineService(
-                       'ConfigFactory',
-                       self::makeTestConfigFactoryInstantiator(
-                               $oldConfigFactory,
-                               [ 'main' => $bootstrapConfig ]
-                       )
-               );
-               $newServices->resetServiceForTesting( 'DBLoadBalancerFactory' );
-               $newServices->redefineService(
-                       'DBLoadBalancerFactory',
-                       function ( MediaWikiServices $services ) use ( $oldLoadBalancerFactory ) {
-                               return $oldLoadBalancerFactory;
-                       }
-               );
-
-               MediaWikiServices::forceGlobalInstance( $newServices );
-
-               self::resetGlobalParser();
-
-               return $newServices;
-       }
-
-       /**
-        * Restores the original, non-mock MediaWikiServices instance.
-        * The previously active MediaWikiServices instance is destroyed,
-        * if it is different from the original that is to be restored.
-        *
-        * @note this if for internal use by test framework code. It should never be
-        * called from inside a test case, a data provider, or a setUp or tearDown method.
-        *
-        * @return bool true if the original service locator was restored,
-        *         false if there was nothing  too do.
-        */
-       public static function restoreMwServices() {
-               if ( !self::$originalServices ) {
-                       return false;
-               }
-
-               $currentServices = MediaWikiServices::getInstance();
-
-               if ( self::$originalServices === $currentServices ) {
-                       return false;
-               }
-
-               MediaWikiServices::forceGlobalInstance( self::$originalServices );
-               $currentServices->destroy();
-
-               self::resetGlobalParser();
-
-               return true;
-       }
-
-       /**
-        * If $wgParser has been unstubbed, replace it with a fresh one so it picks up any config
-        * changes. $wgParser is deprecated, but we still support it for now.
-        */
-       private static function resetGlobalParser() {
-               // phpcs:ignore MediaWiki.Usage.DeprecatedGlobalVariables.Deprecated$wgParser
-               global $wgParser;
-               if ( $wgParser instanceof StubObject ) {
-                       return;
-               }
-               $wgParser = new StubObject( 'wgParser', function () {
-                       return MediaWikiServices::getInstance()->getParser();
-               } );
-       }
-
-       /**
-        * @since 1.27
-        * @param string|Language $lang
-        */
-       public function setUserLang( $lang ) {
-               RequestContext::getMain()->setLanguage( $lang );
-               $this->setMwGlobals( 'wgLang', RequestContext::getMain()->getLanguage() );
-       }
-
-       /**
-        * @since 1.27
-        * @param string|Language $lang
-        */
-       public function setContentLang( $lang ) {
-               if ( $lang instanceof Language ) {
-                       $this->setMwGlobals( 'wgLanguageCode', $lang->getCode() );
-                       // Set to the exact object requested
-                       $this->setService( 'ContentLanguage', $lang );
-               } else {
-                       $this->setMwGlobals( 'wgLanguageCode', $lang );
-                       // Let the service handler make up the object.  Avoid calling setService(), because if
-                       // we do, overrideMwServices() will complain if it's called later on.
-                       $services = MediaWikiServices::getInstance();
-                       $services->resetServiceForTesting( 'ContentLanguage' );
-                       $this->doSetMwGlobals( [ 'wgContLang' => $services->getContentLanguage() ] );
-               }
-       }
-
-       /**
-        * Alters $wgGroupPermissions for the duration of the test.  Can be called
-        * with an array, like
-        *   [ '*' => [ 'read' => false ], 'user' => [ 'read' => false ] ]
-        * or three values to set a single permission, like
-        *   $this->setGroupPermissions( '*', 'read', false );
-        *
-        * @since 1.31
-        * @param array|string $newPerms Either an array of permissions to change,
-        *   in which case the next two parameters are ignored; or a single string
-        *   identifying a group, to use with the next two parameters.
-        * @param string|null $newKey
-        * @param mixed|null $newValue
-        */
-       public function setGroupPermissions( $newPerms, $newKey = null, $newValue = null ) {
-               global $wgGroupPermissions;
-
-               if ( is_string( $newPerms ) ) {
-                       $newPerms = [ $newPerms => [ $newKey => $newValue ] ];
-               }
-
-               $newPermissions = $wgGroupPermissions;
-               foreach ( $newPerms as $group => $permissions ) {
-                       foreach ( $permissions as $key => $value ) {
-                               $newPermissions[$group][$key] = $value;
-                       }
-               }
-
-               $this->setMwGlobals( 'wgGroupPermissions', $newPermissions );
-
-               // Reset services so they pick up the new permissions.
-               // Resetting just PermissionManager is not sufficient, since other services may
-               // have the old instance of PermissionManager injected.
-               $this->resetServices();
-       }
-
-       /**
-        *
-        * @since 1.34
-        * Sets the logger for a specified channel, for the duration of the test.
-        * @since 1.27
-        * @param string $channel
-        * @param LoggerInterface $logger
-        */
-       protected function setLogger( $channel, LoggerInterface $logger ) {
-               // TODO: Once loggers are managed by MediaWikiServices, use
-               //       resetServiceForTesting() to set loggers.
-
-               $provider = LoggerFactory::getProvider();
-               $wrappedProvider = TestingAccessWrapper::newFromObject( $provider );
-               $singletons = $wrappedProvider->singletons;
-               if ( $provider instanceof MonologSpi ) {
-                       if ( !isset( $this->loggers[$channel] ) ) {
-                               $this->loggers[$channel] = $singletons['loggers'][$channel] ?? null;
-                       }
-                       $singletons['loggers'][$channel] = $logger;
-               } elseif ( $provider instanceof LegacySpi || $provider instanceof LogCapturingSpi ) {
-                       if ( !isset( $this->loggers[$channel] ) ) {
-                               $this->loggers[$channel] = $singletons[$channel] ?? null;
-                       }
-                       $singletons[$channel] = $logger;
-               } else {
-                       throw new LogicException( __METHOD__ . ': setting a logger for ' . get_class( $provider )
-                               . ' is not implemented' );
-               }
-               $wrappedProvider->singletons = $singletons;
-       }
-
-       /**
-        * Restores loggers replaced by setLogger().
-        * @since 1.27
-        */
-       private function restoreLoggers() {
-               $provider = LoggerFactory::getProvider();
-               $wrappedProvider = TestingAccessWrapper::newFromObject( $provider );
-               $singletons = $wrappedProvider->singletons;
-               foreach ( $this->loggers as $channel => $logger ) {
-                       if ( $provider instanceof MonologSpi ) {
-                               if ( $logger === null ) {
-                                       unset( $singletons['loggers'][$channel] );
-                               } else {
-                                       $singletons['loggers'][$channel] = $logger;
-                               }
-                       } elseif ( $provider instanceof LegacySpi || $provider instanceof LogCapturingSpi ) {
-                               if ( $logger === null ) {
-                                       unset( $singletons[$channel] );
-                               } else {
-                                       $singletons[$channel] = $logger;
-                               }
-                       }
-               }
-               $wrappedProvider->singletons = $singletons;
-               $this->loggers = [];
-       }
-
-       /**
-        * @return string
-        * @since 1.18
-        */
-       public function dbPrefix() {
-               return self::getTestPrefixFor( $this->db );
-       }
-
-       /**
-        * @param IDatabase $db
-        * @return string
-        * @since 1.32
-        */
-       public static function getTestPrefixFor( IDatabase $db ) {
-               return $db->getType() == 'oracle' ? self::ORA_DB_PREFIX : self::DB_PREFIX;
-       }
-
-       /**
-        * @return bool
-        * @since 1.18
-        */
-       public function needsDB() {
-               // If the test says it uses database tables, it needs the database
-               return $this->tablesUsed || $this->isTestInDatabaseGroup();
-       }
-
-       /**
-        * @return bool
-        * @since 1.32
-        */
-       protected function isTestInDatabaseGroup() {
-               // If the test class says it belongs to the Database group, it needs the database.
-               // NOTE: This ONLY checks for the group in the class level doc comment.
-               $rc = new ReflectionClass( $this );
-               return (bool)preg_match( '/@group +Database/im', $rc->getDocComment() );
-       }
-
-       /**
-        * Insert a new page.
-        *
-        * Should be called from addDBData().
-        *
-        * @since 1.25 ($namespace in 1.28)
-        * @param string|Title $pageName Page name or title
-        * @param string $text Page's content
-        * @param int|null $namespace Namespace id (name cannot already contain namespace)
-        * @param User|null $user If null, static::getTestSysop()->getUser() is used.
-        * @return array Title object and page id
-        * @throws MWException If this test cases's needsDB() method doesn't return true.
-        *         Test cases can use "@group Database" to enable database test support,
-        *         or list the tables under testing in $this->tablesUsed, or override the
-        *         needsDB() method.
-        */
-       protected function insertPage(
-               $pageName,
-               $text = 'Sample page for unit test.',
-               $namespace = null,
-               User $user = null
-       ) {
-               if ( !$this->needsDB() ) {
-                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
-                               ' method should return true. Use @group Database or $this->tablesUsed.' );
-               }
-
-               if ( is_string( $pageName ) ) {
-                       $title = Title::newFromText( $pageName, $namespace );
-               } else {
-                       $title = $pageName;
-               }
-
-               if ( !$user ) {
-                       $user = static::getTestSysop()->getUser();
-               }
-               $comment = __METHOD__ . ': Sample page for unit test.';
-
-               $page = WikiPage::factory( $title );
-               $page->doEditContent( ContentHandler::makeContent( $text, $title ), $comment, 0, false, $user );
-
-               return [
-                       'title' => $title,
-                       'id' => $page->getId(),
-               ];
-       }
-
-       /**
-        * Stub. If a test suite needs to add additional data to the database, it should
-        * implement this method and do so. This method is called once per test suite
-        * (i.e. once per class).
-        *
-        * Note data added by this method may be removed by resetDB() depending on
-        * the contents of $tablesUsed.
-        *
-        * To add additional data between test function runs, override prepareDB().
-        *
-        * @see addDBData()
-        * @see resetDB()
-        *
-        * @since 1.27
-        */
-       public function addDBDataOnce() {
-       }
-
-       /**
-        * Stub. Subclasses may override this to prepare the database.
-        * Called before every test run (test function or data set).
-        *
-        * @see addDBDataOnce()
-        * @see resetDB()
-        *
-        * @since 1.18
-        */
-       public function addDBData() {
-       }
-
-       /**
-        * @since 1.32
-        */
-       protected function addCoreDBData() {
-               if ( $this->db->getType() == 'oracle' ) {
-                       # Insert 0 user to prevent FK violations
-                       # Anonymous user
-                       if ( !$this->db->selectField( 'user', '1', [ 'user_id' => 0 ] ) ) {
-                               $this->db->insert( 'user', [
-                                       'user_id' => 0,
-                                       'user_name' => 'Anonymous' ], __METHOD__, [ 'IGNORE' ] );
-                       }
-
-                       # Insert 0 page to prevent FK violations
-                       # Blank page
-                       if ( !$this->db->selectField( 'page', '1', [ 'page_id' => 0 ] ) ) {
-                               $this->db->insert( 'page', [
-                                       'page_id' => 0,
-                                       'page_namespace' => 0,
-                                       'page_title' => ' ',
-                                       'page_restrictions' => null,
-                                       'page_is_redirect' => 0,
-                                       'page_is_new' => 0,
-                                       'page_random' => 0,
-                                       'page_touched' => $this->db->timestamp(),
-                                       'page_latest' => 0,
-                                       'page_len' => 0 ], __METHOD__, [ 'IGNORE' ] );
-                       }
-               }
-
-               SiteStatsInit::doPlaceholderInit();
-
-               User::resetIdByNameCache();
-
-               // Make sysop user
-               $user = static::getTestSysop()->getUser();
-
-               // Make 1 page with 1 revision
-               $page = WikiPage::factory( Title::newFromText( 'UTPage' ) );
-               if ( $page->getId() == 0 ) {
-                       $page->doEditContent(
-                               new WikitextContent( 'UTContent' ),
-                               'UTPageSummary',
-                               EDIT_NEW | EDIT_SUPPRESS_RC,
-                               false,
-                               $user
-                       );
-                       // an edit always attempt to purge backlink links such as history
-                       // pages. That is unnecessary.
-                       JobQueueGroup::singleton()->get( 'htmlCacheUpdate' )->delete();
-                       // WikiPages::doEditUpdates randomly adds RC purges
-                       JobQueueGroup::singleton()->get( 'recentChangesUpdate' )->delete();
-
-                       // doEditContent() probably started the session via
-                       // User::loadFromSession(). Close it now.
-                       if ( session_id() !== '' ) {
-                               session_write_close();
-                               session_id( '' );
-                       }
-               }
-       }
-
-       /**
-        * Restores MediaWiki to using the table set (table prefix) it was using before
-        * setupTestDB() was called. Useful if we need to perform database operations
-        * after the test run has finished (such as saving logs or profiling info).
-        *
-        * This is called by phpunit/bootstrap.php after the last test.
-        *
-        * @since 1.21
-        */
-       public static function teardownTestDB() {
-               global $wgJobClasses;
-
-               if ( !self::$dbSetup ) {
-                       return;
-               }
-
-               Hooks::run( 'UnitTestsBeforeDatabaseTeardown' );
-
-               foreach ( $wgJobClasses as $type => $class ) {
-                       // Delete any jobs under the clone DB (or old prefix in other stores)
-                       JobQueueGroup::singleton()->get( $type )->delete();
-               }
-
-               // T219673: close any connections from code that failed to call reuseConnection()
-               // or is still holding onto a DBConnRef instance (e.g. in a singleton).
-               MediaWikiServices::getInstance()->getDBLoadBalancerFactory()->closeAll();
-               CloneDatabase::changePrefix( self::$oldTablePrefix );
-
-               self::$oldTablePrefix = false;
-               self::$dbSetup = false;
-       }
-
-       /**
-        * Setups a database with cloned tables using the given prefix.
-        *
-        * If reuseDB is true and certain conditions apply, it will just change the prefix.
-        * Otherwise, it will clone the tables and change the prefix.
-        *
-        * @param IMaintainableDatabase $db Database to use
-        * @param string|null $prefix Prefix to use for test tables. If not given, the prefix is determined
-        *        automatically for $db.
-        * @return bool True if tables were cloned, false if only the prefix was changed
-        */
-       protected static function setupDatabaseWithTestPrefix(
-               IMaintainableDatabase $db,
-               $prefix = null
-       ) {
-               if ( $prefix === null ) {
-                       $prefix = self::getTestPrefixFor( $db );
-               }
-
-               if ( ( $db->getType() == 'oracle' || !self::$useTemporaryTables ) && self::$reuseDB ) {
-                       $db->tablePrefix( $prefix );
-                       return false;
-               }
-
-               if ( !isset( $db->_originalTablePrefix ) ) {
-                       $oldPrefix = $db->tablePrefix();
-
-                       if ( $oldPrefix === $prefix ) {
-                               // table already has the correct prefix, but presumably no cloned tables
-                               $oldPrefix = self::$oldTablePrefix;
-                       }
-
-                       $db->tablePrefix( $oldPrefix );
-                       $tablesCloned = self::listTables( $db );
-                       $dbClone = new CloneDatabase( $db, $tablesCloned, $prefix, $oldPrefix );
-                       $dbClone->useTemporaryTables( self::$useTemporaryTables );
-
-                       $dbClone->cloneTableStructure();
-
-                       $db->tablePrefix( $prefix );
-                       $db->_originalTablePrefix = $oldPrefix;
-               }
-
-               return true;
-       }
-
-       /**
-        * Set up all test DBs
-        */
-       public function setupAllTestDBs() {
-               global $wgDBprefix;
-
-               self::$oldTablePrefix = $wgDBprefix;
-
-               $testPrefix = $this->dbPrefix();
-
-               // switch to a temporary clone of the database
-               self::setupTestDB( $this->db, $testPrefix );
-
-               if ( self::isUsingExternalStoreDB() ) {
-                       self::setupExternalStoreTestDBs( $testPrefix );
-               }
-
-               // NOTE: Change the prefix in the LBFactory and $wgDBprefix, to prevent
-               // *any* database connections to operate on live data.
-               CloneDatabase::changePrefix( $testPrefix );
-       }
-
-       /**
-        * Creates an empty skeleton of the wiki database by cloning its structure
-        * to equivalent tables using the given $prefix. Then sets MediaWiki to
-        * use the new set of tables (aka schema) instead of the original set.
-        *
-        * This is used to generate a dummy table set, typically consisting of temporary
-        * tables, that will be used by tests instead of the original wiki database tables.
-        *
-        * @since 1.21
-        *
-        * @note the original table prefix is stored in self::$oldTablePrefix. This is used
-        * by teardownTestDB() to return the wiki to using the original table set.
-        *
-        * @note this method only works when first called. Subsequent calls have no effect,
-        * even if using different parameters.
-        *
-        * @param IMaintainableDatabase $db The database connection
-        * @param string $prefix The prefix to use for the new table set (aka schema).
-        *
-        * @throws MWException If the database table prefix is already $prefix
-        */
-       public static function setupTestDB( IMaintainableDatabase $db, $prefix ) {
-               if ( self::$dbSetup ) {
-                       return;
-               }
-
-               if ( $db->tablePrefix() === $prefix ) {
-                       throw new MWException(
-                               'Cannot run unit tests, the database prefix is already "' . $prefix . '"' );
-               }
-
-               // TODO: the below should be re-written as soon as LBFactory, LoadBalancer,
-               // and Database no longer use global state.
-
-               self::$dbSetup = true;
-
-               if ( !self::setupDatabaseWithTestPrefix( $db, $prefix ) ) {
-                       return;
-               }
-
-               // Assuming this isn't needed for External Store database, and not sure if the procedure
-               // would be available there.
-               if ( $db->getType() == 'oracle' ) {
-                       $db->query( 'BEGIN FILL_WIKI_INFO; END;', __METHOD__ );
-               }
-
-               Hooks::run( 'UnitTestsAfterDatabaseSetup', [ $db, $prefix ] );
-       }
-
-       /**
-        * Clones the External Store database(s) for testing
-        *
-        * @param string|null $testPrefix Prefix for test tables. Will be determined automatically
-        *        if not given.
-        */
-       protected static function setupExternalStoreTestDBs( $testPrefix = null ) {
-               $connections = self::getExternalStoreDatabaseConnections();
-               foreach ( $connections as $dbw ) {
-                       self::setupDatabaseWithTestPrefix( $dbw, $testPrefix );
-               }
-       }
-
-       /**
-        * Gets master database connections for all of the ExternalStoreDB
-        * stores configured in $wgDefaultExternalStore.
-        *
-        * @return Database[] Array of Database master connections
-        */
-       protected static function getExternalStoreDatabaseConnections() {
-               global $wgDefaultExternalStore;
-
-               /** @var ExternalStoreDB $externalStoreDB */
-               $externalStoreDB = ExternalStore::getStoreObject( 'DB' );
-               $defaultArray = (array)$wgDefaultExternalStore;
-               $dbws = [];
-               foreach ( $defaultArray as $url ) {
-                       if ( strpos( $url, 'DB://' ) === 0 ) {
-                               list( $proto, $cluster ) = explode( '://', $url, 2 );
-                               // Avoid getMaster() because setupDatabaseWithTestPrefix()
-                               // requires Database instead of plain DBConnRef/IDatabase
-                               $dbws[] = $externalStoreDB->getMaster( $cluster );
-                       }
-               }
-
-               return $dbws;
-       }
-
-       /**
-        * Check whether ExternalStoreDB is being used
-        *
-        * @return bool True if it's being used
-        */
-       protected static function isUsingExternalStoreDB() {
-               global $wgDefaultExternalStore;
-               if ( !$wgDefaultExternalStore ) {
-                       return false;
-               }
-
-               $defaultArray = (array)$wgDefaultExternalStore;
-               foreach ( $defaultArray as $url ) {
-                       if ( strpos( $url, 'DB://' ) === 0 ) {
-                               return true;
-                       }
-               }
-
-               return false;
-       }
-
-       /**
-        * @throws LogicException if the given database connection is not a set up to use
-        * mock tables.
-        *
-        * @since 1.31 this is no longer private.
-        */
-       protected function ensureMockDatabaseConnection( IDatabase $db ) {
-               if ( $db->tablePrefix() !== $this->dbPrefix() ) {
-                       throw new LogicException(
-                               'Trying to delete mock tables, but table prefix does not indicate a mock database.'
-                       );
-               }
-       }
-
-       private static $schemaOverrideDefaults = [
-               'scripts' => [],
-               'create' => [],
-               'drop' => [],
-               'alter' => [],
-       ];
-
-       /**
-        * Stub. If a test suite needs to test against a specific database schema, it should
-        * override this method and return the appropriate information from it.
-        *
-        * 'create', 'drop' and 'alter' in the returned array should list all the tables affected
-        * by the 'scripts', even if the test is only interested in a subset of them, otherwise
-        * the overrides may not be fully cleaned up, leading to errors later.
-        *
-        * @param IMaintainableDatabase $db The DB connection to use for the mock schema.
-        *        May be used to check the current state of the schema, to determine what
-        *        overrides are needed.
-        *
-        * @return array An associative array with the following fields:
-        *  - 'scripts': any SQL scripts to run. If empty or not present, schema overrides are skipped.
-        * - 'create': A list of tables created (may or may not exist in the original schema).
-        * - 'drop': A list of tables dropped (expected to be present in the original schema).
-        * - 'alter': A list of tables altered (expected to be present in the original schema).
-        */
-       protected function getSchemaOverrides( IMaintainableDatabase $db ) {
-               return [];
-       }
-
-       /**
-        * Undoes the specified schema overrides..
-        * Called once per test class, just before addDataOnce().
-        *
-        * @param IMaintainableDatabase $db
-        * @param array $oldOverrides
-        */
-       private function undoSchemaOverrides( IMaintainableDatabase $db, $oldOverrides ) {
-               $this->ensureMockDatabaseConnection( $db );
-
-               $oldOverrides = $oldOverrides + self::$schemaOverrideDefaults;
-               $originalTables = $this->listOriginalTables( $db );
-
-               // Drop tables that need to be restored or removed.
-               $tablesToDrop = array_merge( $oldOverrides['create'], $oldOverrides['alter'] );
-
-               // Restore tables that have been dropped or created or altered,
-               // if they exist in the original schema.
-               $tablesToRestore = array_merge( $tablesToDrop, $oldOverrides['drop'] );
-               $tablesToRestore = array_intersect( $originalTables, $tablesToRestore );
-
-               if ( $tablesToDrop ) {
-                       $this->dropMockTables( $db, $tablesToDrop );
-               }
-
-               if ( $tablesToRestore ) {
-                       $this->recloneMockTables( $db, $tablesToRestore );
-
-                       // Reset the restored tables, mainly for the side effect of
-                       // re-calling $this->addCoreDBData() if necessary.
-                       $this->resetDB( $db, $tablesToRestore );
-               }
-       }
-
-       /**
-        * Applies the schema overrides returned by getSchemaOverrides(),
-        * after undoing any previously applied schema overrides.
-        * Called once per test class, just before addDataOnce().
-        */
-       private function setUpSchema( IMaintainableDatabase $db ) {
-               // Undo any active overrides.
-               $oldOverrides = $db->_schemaOverrides ?? self::$schemaOverrideDefaults;
-
-               if ( $oldOverrides['alter'] || $oldOverrides['create'] || $oldOverrides['drop'] ) {
-                       $this->undoSchemaOverrides( $db, $oldOverrides );
-                       unset( $db->_schemaOverrides );
-               }
-
-               // Determine new overrides.
-               $overrides = $this->getSchemaOverrides( $db ) + self::$schemaOverrideDefaults;
-
-               $extraKeys = array_diff(
-                       array_keys( $overrides ),
-                       array_keys( self::$schemaOverrideDefaults )
-               );
-
-               if ( $extraKeys ) {
-                       throw new InvalidArgumentException(
-                               'Schema override contains extra keys: ' . var_export( $extraKeys, true )
-                       );
-               }
-
-               if ( !$overrides['scripts'] ) {
-                       // no scripts to run
-                       return;
-               }
-
-               if ( !$overrides['create'] && !$overrides['drop'] && !$overrides['alter'] ) {
-                       throw new InvalidArgumentException(
-                               'Schema override scripts given, but no tables are declared to be '
-                               . 'created, dropped or altered.'
-                       );
-               }
-
-               $this->ensureMockDatabaseConnection( $db );
-
-               // Drop the tables that will be created by the schema scripts.
-               $originalTables = $this->listOriginalTables( $db );
-               $tablesToDrop = array_intersect( $originalTables, $overrides['create'] );
-
-               if ( $tablesToDrop ) {
-                       $this->dropMockTables( $db, $tablesToDrop );
-               }
-
-               // Run schema override scripts.
-               foreach ( $overrides['scripts'] as $script ) {
-                       $db->sourceFile(
-                               $script,
-                               null,
-                               null,
-                               __METHOD__,
-                               function ( $cmd ) {
-                                       return $this->mungeSchemaUpdateQuery( $cmd );
-                               }
-                       );
-               }
-
-               $db->_schemaOverrides = $overrides;
-       }
-
-       private function mungeSchemaUpdateQuery( $cmd ) {
-               return self::$useTemporaryTables
-                       ? preg_replace( '/\bCREATE\s+TABLE\b/i', 'CREATE TEMPORARY TABLE', $cmd )
-                       : $cmd;
-       }
-
-       /**
-        * Drops the given mock tables.
-        *
-        * @param IMaintainableDatabase $db
-        * @param array $tables
-        */
-       private function dropMockTables( IMaintainableDatabase $db, array $tables ) {
-               $this->ensureMockDatabaseConnection( $db );
-
-               foreach ( $tables as $tbl ) {
-                       $tbl = $db->tableName( $tbl );
-                       $db->query( "DROP TABLE IF EXISTS $tbl", __METHOD__ );
-               }
-       }
-
-       /**
-        * Lists all tables in the live database schema, without a prefix.
-        *
-        * @param IMaintainableDatabase $db
-        * @return array
-        */
-       private function listOriginalTables( IMaintainableDatabase $db ) {
-               if ( !isset( $db->_originalTablePrefix ) ) {
-                       throw new LogicException( 'No original table prefix know, cannot list tables!' );
-               }
-
-               $originalTables = $db->listTables( $db->_originalTablePrefix, __METHOD__ );
-
-               $unittestPrefixRegex = '/^' . preg_quote( $this->dbPrefix(), '/' ) . '/';
-               $originalPrefixRegex = '/^' . preg_quote( $db->_originalTablePrefix, '/' ) . '/';
-
-               $originalTables = array_filter(
-                       $originalTables,
-                       function ( $pt ) use ( $unittestPrefixRegex ) {
-                               return !preg_match( $unittestPrefixRegex, $pt );
-                       }
-               );
-
-               $originalTables = array_map(
-                       function ( $pt ) use ( $originalPrefixRegex ) {
-                               return preg_replace( $originalPrefixRegex, '', $pt );
-                       },
-                       $originalTables
-               );
-
-               return array_unique( $originalTables );
-       }
-
-       /**
-        * Re-clones the given mock tables to restore them based on the live database schema.
-        * The tables listed in $tables are expected to currently not exist, so dropMockTables()
-        * should be called first.
-        *
-        * @param IMaintainableDatabase $db
-        * @param array $tables
-        */
-       private function recloneMockTables( IMaintainableDatabase $db, array $tables ) {
-               $this->ensureMockDatabaseConnection( $db );
-
-               if ( !isset( $db->_originalTablePrefix ) ) {
-                       throw new LogicException( 'No original table prefix know, cannot restore tables!' );
-               }
-
-               $originalTables = $this->listOriginalTables( $db );
-               $tables = array_intersect( $tables, $originalTables );
-
-               $dbClone = new CloneDatabase( $db, $tables, $db->tablePrefix(), $db->_originalTablePrefix );
-               $dbClone->useTemporaryTables( self::$useTemporaryTables );
-
-               $dbClone->cloneTableStructure();
-       }
-
-       /**
-        * Empty all tables so they can be repopulated for tests
-        *
-        * @param Database $db|null Database to reset
-        * @param array $tablesUsed Tables to reset
-        */
-       private function resetDB( $db, $tablesUsed ) {
-               if ( $db ) {
-                       $userTables = [ 'user', 'user_groups', 'user_properties', 'actor' ];
-                       $pageTables = [
-                               'page', 'revision', 'ip_changes', 'revision_comment_temp', 'comment', 'archive',
-                               'revision_actor_temp', 'slots', 'content', 'content_models', 'slot_roles',
-                       ];
-                       $coreDBDataTables = array_merge( $userTables, $pageTables );
-
-                       // If any of the user or page tables were marked as used, we should clear all of them.
-                       if ( array_intersect( $tablesUsed, $userTables ) ) {
-                               $tablesUsed = array_unique( array_merge( $tablesUsed, $userTables ) );
-                               TestUserRegistry::clear();
-
-                               // Reset $wgUser, which is probably 127.0.0.1, as its loaded data is probably not valid
-                               // @todo Should we start setting $wgUser to something nondeterministic
-                               //  to encourage tests to be updated to not depend on it?
-                               global $wgUser;
-                               $wgUser->clearInstanceCache( $wgUser->mFrom );
-                       }
-                       if ( array_intersect( $tablesUsed, $pageTables ) ) {
-                               $tablesUsed = array_unique( array_merge( $tablesUsed, $pageTables ) );
-                       }
-
-                       // Postgres, Oracle, and MSSQL all use mwuser/pagecontent
-                       // instead of user/text. But Postgres does not remap the
-                       // table name in tableExists(), so we mark the real table
-                       // names as being used.
-                       if ( $db->getType() === 'postgres' ) {
-                               if ( in_array( 'user', $tablesUsed ) ) {
-                                       $tablesUsed[] = 'mwuser';
-                               }
-                               if ( in_array( 'text', $tablesUsed ) ) {
-                                       $tablesUsed[] = 'pagecontent';
-                               }
-                       }
-
-                       foreach ( $tablesUsed as $tbl ) {
-                               $this->truncateTable( $tbl, $db );
-                       }
-
-                       if ( array_intersect( $tablesUsed, $coreDBDataTables ) ) {
-                               // Reset services that may contain information relating to the truncated tables
-                               $this->overrideMwServices();
-                               // Re-add core DB data that was deleted
-                               $this->addCoreDBData();
-                       }
-               }
-       }
-
-       /**
-        * Empties the given table and resets any auto-increment counters.
-        * Will also purge caches associated with some well known tables.
-        * If the table is not know, this method just returns.
-        *
-        * @param string $tableName
-        * @param IDatabase|null $db
-        */
-       protected function truncateTable( $tableName, IDatabase $db = null ) {
-               if ( !$db ) {
-                       $db = $this->db;
-               }
-
-               if ( !$db->tableExists( $tableName ) ) {
-                       return;
-               }
-
-               $truncate = in_array( $db->getType(), [ 'oracle', 'mysql' ] );
-
-               if ( $truncate ) {
-                       $db->query( 'TRUNCATE TABLE ' . $db->tableName( $tableName ), __METHOD__ );
-               } else {
-                       $db->delete( $tableName, '*', __METHOD__ );
-               }
-
-               if ( $db instanceof DatabasePostgres || $db instanceof DatabaseSqlite ) {
-                       // Reset the table's sequence too.
-                       $db->resetSequenceForTable( $tableName, __METHOD__ );
-               }
-
-               // re-initialize site_stats table
-               if ( $tableName === 'site_stats' ) {
-                       SiteStatsInit::doPlaceholderInit();
-               }
-       }
-
-       private static function unprefixTable( &$tableName, $ind, $prefix ) {
-               $tableName = substr( $tableName, strlen( $prefix ) );
-       }
-
-       private static function isNotUnittest( $table ) {
-               return strpos( $table, self::DB_PREFIX ) !== 0;
-       }
-
-       /**
-        * @since 1.18
-        *
-        * @param IMaintainableDatabase $db
-        *
-        * @return array
-        */
-       public static function listTables( IMaintainableDatabase $db ) {
-               $prefix = $db->tablePrefix();
-               $tables = $db->listTables( $prefix, __METHOD__ );
-
-               if ( $db->getType() === 'mysql' ) {
-                       static $viewListCache = null;
-                       if ( $viewListCache === null ) {
-                               $viewListCache = $db->listViews( null, __METHOD__ );
-                       }
-                       // T45571: cannot clone VIEWs under MySQL
-                       $tables = array_diff( $tables, $viewListCache );
-               }
-               array_walk( $tables, [ __CLASS__, 'unprefixTable' ], $prefix );
-
-               // Don't duplicate test tables from the previous fataled run
-               $tables = array_filter( $tables, [ __CLASS__, 'isNotUnittest' ] );
-
-               if ( $db->getType() == 'sqlite' ) {
-                       $tables = array_flip( $tables );
-                       // these are subtables of searchindex and don't need to be duped/dropped separately
-                       unset( $tables['searchindex_content'] );
-                       unset( $tables['searchindex_segdir'] );
-                       unset( $tables['searchindex_segments'] );
-                       $tables = array_flip( $tables );
-               }
-
-               return $tables;
-       }
-
-       /**
-        * Copy test data from one database connection to another.
-        *
-        * This should only be used for small data sets.
-        *
-        * @param IDatabase $source
-        * @param IDatabase $target
-        */
-       public function copyTestData( IDatabase $source, IDatabase $target ) {
-               if ( $this->db->getType() === 'sqlite' ) {
-                       // SQLite uses a non-temporary copy of the searchindex table for testing,
-                       // which gets deleted and re-created when setting up the secondary connection,
-                       // causing "Error 17" when trying to copy the data. See T191863#4130112.
-                       throw new RuntimeException(
-                               'Setting up a secondary database connection with test data is currently not'
-                               . 'with SQLite. You may want to use markTestSkippedIfDbType() to bypass this issue.'
-                       );
-               }
-
-               $tables = self::listOriginalTables( $source );
-
-               foreach ( $tables as $table ) {
-                       $res = $source->select( $table, '*', [], __METHOD__ );
-                       $allRows = [];
-
-                       foreach ( $res as $row ) {
-                               $allRows[] = (array)$row;
-                       }
-
-                       $target->insert( $table, $allRows, __METHOD__, [ 'IGNORE' ] );
-               }
-       }
-
-       /**
-        * @throws MWException
-        * @since 1.18
-        */
-       protected function checkDbIsSupported() {
-               if ( !in_array( $this->db->getType(), $this->supportedDBs ) ) {
-                       throw new MWException( $this->db->getType() . " is not currently supported for unit testing." );
-               }
-       }
-
-       /**
-        * @since 1.18
-        * @param string $offset
-        * @return mixed
-        */
-       public function getCliArg( $offset ) {
-               return $this->cliArgs[$offset] ?? null;
-       }
-
-       /**
-        * @since 1.18
-        * @param string $offset
-        * @param mixed $value
-        */
-       public function setCliArg( $offset, $value ) {
-               $this->cliArgs[$offset] = $value;
-       }
-
-       /**
-        * Don't throw a warning if $function is deprecated and called later
-        *
-        * @since 1.19
-        *
-        * @param string $function
-        */
-       public function hideDeprecated( $function ) {
-               Wikimedia\suppressWarnings();
-               wfDeprecated( $function );
-               Wikimedia\restoreWarnings();
-       }
-
-       /**
-        * Asserts that the given database query yields the rows given by $expectedRows.
-        * The expected rows should be given as indexed (not associative) arrays, with
-        * the values given in the order of the columns in the $fields parameter.
-        * Note that the rows are sorted by the columns given in $fields.
-        *
-        * @since 1.20
-        *
-        * @param string|array $table The table(s) to query
-        * @param string|array $fields The columns to include in the result (and to sort by)
-        * @param string|array $condition "where" condition(s)
-        * @param array $expectedRows An array of arrays giving the expected rows.
-        * @param array $options Options for the query
-        * @param array $join_conds Join conditions for the query
-        *
-        * @throws MWException If this test cases's needsDB() method doesn't return true.
-        *         Test cases can use "@group Database" to enable database test support,
-        *         or list the tables under testing in $this->tablesUsed, or override the
-        *         needsDB() method.
-        */
-       protected function assertSelect(
-               $table, $fields, $condition, array $expectedRows, array $options = [], array $join_conds = []
-       ) {
-               if ( !$this->needsDB() ) {
-                       throw new MWException( 'When testing database state, the test cases\'s needDB()' .
-                               ' method should return true. Use @group Database or $this->tablesUsed.' );
-               }
-
-               $db = wfGetDB( DB_REPLICA );
-
-               $res = $db->select(
-                       $table,
-                       $fields,
-                       $condition,
-                       wfGetCaller(),
-                       $options + [ 'ORDER BY' => $fields ],
-                       $join_conds
-               );
-               $this->assertNotEmpty( $res, "query failed: " . $db->lastError() );
-
-               $i = 0;
-
-               foreach ( $expectedRows as $expected ) {
-                       $r = $res->fetchRow();
-                       self::stripStringKeys( $r );
-
-                       $i += 1;
-                       $this->assertNotEmpty( $r, "row #$i missing" );
-
-                       $this->assertEquals( $expected, $r, "row #$i mismatches" );
-               }
-
-               $r = $res->fetchRow();
-               self::stripStringKeys( $r );
-
-               $this->assertFalse( $r, "found extra row (after #$i)" );
-       }
-
-       /**
-        * Utility method taking an array of elements and wrapping
-        * each element in its own array. Useful for data providers
-        * that only return a single argument.
-        *
-        * @since 1.20
-        *
-        * @param array $elements
-        *
-        * @return array
-        */
-       protected function arrayWrap( array $elements ) {
-               return array_map(
-                       function ( $element ) {
-                               return [ $element ];
-                       },
-                       $elements
-               );
-       }
-
-       /**
-        * Assert that two arrays are equal. By default this means that both arrays need to hold
-        * the same set of values. Using additional arguments, order and associated key can also
-        * be set as relevant.
-        *
-        * @since 1.20
-        *
-        * @param array $expected
-        * @param array $actual
-        * @param bool $ordered If the order of the values should match
-        * @param bool $named If the keys should match
-        */
-       protected function assertArrayEquals( array $expected, array $actual,
-               $ordered = false, $named = false
-       ) {
-               if ( !$ordered ) {
-                       $this->objectAssociativeSort( $expected );
-                       $this->objectAssociativeSort( $actual );
-               }
-
-               if ( !$named ) {
-                       $expected = array_values( $expected );
-                       $actual = array_values( $actual );
-               }
-
-               call_user_func_array(
-                       [ $this, 'assertEquals' ],
-                       array_merge( [ $expected, $actual ], array_slice( func_get_args(), 4 ) )
-               );
-       }
-
-       /**
-        * Put each HTML element on its own line and then equals() the results
-        *
-        * Use for nicely formatting of PHPUnit diff output when comparing very
-        * simple HTML
-        *
-        * @since 1.20
-        *
-        * @param string $expected HTML on oneline
-        * @param string $actual HTML on oneline
-        * @param string $msg Optional message
-        */
-       protected function assertHTMLEquals( $expected, $actual, $msg = '' ) {
-               $expected = str_replace( '>', ">\n", $expected );
-               $actual = str_replace( '>', ">\n", $actual );
-
-               $this->assertEquals( $expected, $actual, $msg );
-       }
-
-       /**
-        * Does an associative sort that works for objects.
-        *
-        * @since 1.20
-        *
-        * @param array &$array
-        */
-       protected function objectAssociativeSort( array &$array ) {
-               uasort(
-                       $array,
-                       function ( $a, $b ) {
-                               return serialize( $a ) <=> serialize( $b );
-                       }
-               );
-       }
-
-       /**
-        * Utility function for eliminating all string keys from an array.
-        * Useful to turn a database result row as returned by fetchRow() into
-        * a pure indexed array.
-        *
-        * @since 1.20
-        *
-        * @param mixed &$r The array to remove string keys from.
-        */
-       protected static function stripStringKeys( &$r ) {
-               if ( !is_array( $r ) ) {
-                       return;
-               }
-
-               foreach ( $r as $k => $v ) {
-                       if ( is_string( $k ) ) {
-                               unset( $r[$k] );
-                       }
-               }
-       }
-
-       /**
-        * Asserts that the provided variable is of the specified
-        * internal type or equals the $value argument. This is useful
-        * for testing return types of functions that return a certain
-        * type or *value* when not set or on error.
-        *
-        * @since 1.20
-        *
-        * @param string $type
-        * @param mixed $actual
-        * @param mixed $value
-        * @param string $message
-        */
-       protected function assertTypeOrValue( $type, $actual, $value = false, $message = '' ) {
-               if ( $actual === $value ) {
-                       $this->assertTrue( true, $message );
-               } else {
-                       $this->assertType( $type, $actual, $message );
-               }
-       }
-
-       /**
-        * Asserts the type of the provided value. This can be either
-        * in internal type such as boolean or integer, or a class or
-        * interface the value extends or implements.
-        *
-        * @since 1.20
-        *
-        * @param string $type
-        * @param mixed $actual
-        * @param string $message
-        */
-       protected function assertType( $type, $actual, $message = '' ) {
-               if ( class_exists( $type ) || interface_exists( $type ) ) {
-                       $this->assertInstanceOf( $type, $actual, $message );
-               } else {
-                       $this->assertInternalType( $type, $actual, $message );
-               }
-       }
-
-       /**
-        * Returns true if the given namespace defaults to Wikitext
-        * according to $wgNamespaceContentModels
-        *
-        * @param int $ns The namespace ID to check
-        *
-        * @return bool
-        * @since 1.21
-        */
-       protected function isWikitextNS( $ns ) {
-               global $wgNamespaceContentModels;
-
-               if ( isset( $wgNamespaceContentModels[$ns] ) ) {
-                       return $wgNamespaceContentModels[$ns] === CONTENT_MODEL_WIKITEXT;
-               }
-
-               return true;
-       }
-
-       /**
-        * Returns the ID of a namespace that defaults to Wikitext.
-        *
-        * @throws MWException If there is none.
-        * @return int The ID of the wikitext Namespace
-        * @since 1.21
-        */
-       protected function getDefaultWikitextNS() {
-               global $wgNamespaceContentModels;
-
-               static $wikitextNS = null; // this is not going to change
-               if ( $wikitextNS !== null ) {
-                       return $wikitextNS;
-               }
-
-               // quickly short out on most common case:
-               if ( !isset( $wgNamespaceContentModels[NS_MAIN] ) ) {
-                       return NS_MAIN;
-               }
-
-               // NOTE: prefer content namespaces
-               $nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
-               $namespaces = array_unique( array_merge(
-                       $nsInfo->getContentNamespaces(),
-                       [ NS_MAIN, NS_HELP, NS_PROJECT ], // prefer these
-                       $nsInfo->getValidNamespaces()
-               ) );
-
-               $namespaces = array_diff( $namespaces, [
-                       NS_FILE, NS_CATEGORY, NS_MEDIAWIKI, NS_USER // don't mess with magic namespaces
-               ] );
-
-               $talk = array_filter( $namespaces, function ( $ns ) use ( $nsInfo ) {
-                       return $nsInfo->isTalk( $ns );
-               } );
-
-               // prefer non-talk pages
-               $namespaces = array_diff( $namespaces, $talk );
-               $namespaces = array_merge( $namespaces, $talk );
-
-               // check default content model of each namespace
-               foreach ( $namespaces as $ns ) {
-                       if ( !isset( $wgNamespaceContentModels[$ns] ) ||
-                               $wgNamespaceContentModels[$ns] === CONTENT_MODEL_WIKITEXT
-                       ) {
-                               $wikitextNS = $ns;
-
-                               return $wikitextNS;
-                       }
-               }
-
-               // give up
-               // @todo Inside a test, we could skip the test as incomplete.
-               //        But frequently, this is used in fixture setup.
-               throw new MWException( "No namespace defaults to wikitext!" );
-       }
-
-       /**
-        * Check, if $wgDiff3 is set and ready to merge
-        * Will mark the calling test as skipped, if not ready
-        *
-        * @since 1.21
-        */
-       protected function markTestSkippedIfNoDiff3() {
-               global $wgDiff3;
-
-               # This check may also protect against code injection in
-               # case of broken installations.
-               Wikimedia\suppressWarnings();
-               $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
-               Wikimedia\restoreWarnings();
-
-               if ( !$haveDiff3 ) {
-                       $this->markTestSkipped( "Skip test, since diff3 is not configured" );
-               }
-       }
-
-       /**
-        * Check if $extName is a loaded PHP extension, will skip the
-        * test whenever it is not loaded.
-        *
-        * @since 1.21
-        * @param string $extName
-        * @return bool
-        */
-       protected function checkPHPExtension( $extName ) {
-               $loaded = extension_loaded( $extName );
-               if ( !$loaded ) {
-                       $this->markTestSkipped( "PHP extension '$extName' is not loaded, skipping." );
-               }
-
-               return $loaded;
-       }
-
-       /**
-        * Skip the test if using the specified database type
-        *
-        * @param string $type Database type
-        * @since 1.32
-        */
-       protected function markTestSkippedIfDbType( $type ) {
-               if ( $this->db->getType() === $type ) {
-                       $this->markTestSkipped( "The $type database type isn't supported for this test" );
-               }
-       }
-
-       /**
-        * Used as a marker to prevent wfResetOutputBuffers from breaking PHPUnit.
-        * @param string $buffer
-        * @return string
-        */
-       public static function wfResetOutputBuffersBarrier( $buffer ) {
-               return $buffer;
-       }
-
-       /**
-        * Create a temporary hook handler which will be reset by tearDown.
-        * This replaces other handlers for the same hook.
-        * @param string $hookName Hook name
-        * @param mixed $handler Value suitable for a hook handler
-        * @since 1.28
-        */
-       protected function setTemporaryHook( $hookName, $handler ) {
-               $this->mergeMwGlobalArrayValue( 'wgHooks', [ $hookName => [ $handler ] ] );
-       }
-
-       /**
-        * Check whether file contains given data.
-        * @param string $fileName
-        * @param string $actualData
-        * @param bool $createIfMissing If true, and file does not exist, create it with given data
-        *                              and skip the test.
-        * @param string $msg
-        * @since 1.30
-        */
-       protected function assertFileContains(
-               $fileName,
-               $actualData,
-               $createIfMissing = false,
-               $msg = ''
-       ) {
-               if ( $createIfMissing ) {
-                       if ( !file_exists( $fileName ) ) {
-                               file_put_contents( $fileName, $actualData );
-                               $this->markTestSkipped( "Data file $fileName does not exist" );
-                       }
-               } else {
-                       self::assertFileExists( $fileName );
-               }
-               self::assertEquals( file_get_contents( $fileName ), $actualData, $msg );
-       }
-
-       /**
-        * Edits or creates a page/revision
-        * @param string $pageName Page title
-        * @param string $text Content of the page
-        * @param string $summary Optional summary string for the revision
-        * @param int $defaultNs Optional namespace id
-        * @param User|null $user If null, static::getTestSysop()->getUser() is used.
-        * @return Status Object as returned by WikiPage::doEditContent()
-        * @throws MWException If this test cases's needsDB() method doesn't return true.
-        *         Test cases can use "@group Database" to enable database test support,
-        *         or list the tables under testing in $this->tablesUsed, or override the
-        *         needsDB() method.
-        */
-       protected function editPage(
-               $pageName,
-               $text,
-               $summary = '',
-               $defaultNs = NS_MAIN,
-               User $user = null
-       ) {
-               if ( !$this->needsDB() ) {
-                       throw new MWException( 'When testing which pages, the test cases\'s needsDB()' .
-                               ' method should return true. Use @group Database or $this->tablesUsed.' );
-               }
-
-               $title = Title::newFromText( $pageName, $defaultNs );
-               $page = WikiPage::factory( $title );
-
-               return $page->doEditContent(
-                       ContentHandler::makeContent( $text, $title ),
-                       $summary,
-                       0,
-                       false,
-                       $user
-               );
-       }
-
-       /**
-        * Revision-deletes a revision.
-        *
-        * @param Revision|int $rev Revision to delete
-        * @param array $value Keys are Revision::DELETED_* flags.  Values are 1 to set the bit, 0 to
-        *   clear, -1 to leave alone.  (All other values also clear the bit.)
-        * @param string $comment Deletion comment
-        */
-       protected function revisionDelete(
-               $rev, array $value = [ Revision::DELETED_TEXT => 1 ], $comment = ''
-       ) {
-               if ( is_int( $rev ) ) {
-                       $rev = Revision::newFromId( $rev );
-               }
-               RevisionDeleter::createList(
-                       'revision', RequestContext::getMain(), $rev->getTitle(), [ $rev->getId() ]
-               )->setVisibility( [
-                       'value' => $value,
-                       'comment' => $comment,
-               ] );
-       }
-
-       /**
-        * Returns a PHPUnit constraint that matches anything other than a fixed set of values. This can
-        * be used to whitelist values, e.g.
-        *   $mock->expects( $this->never() )->method( $this->anythingBut( 'foo', 'bar' ) );
-        * which will throw if any unexpected method is called.
-        *
-        * @param mixed ...$values Values that are not matched
-        */
-       protected function anythingBut( ...$values ) {
-               return $this->logicalNot( $this->logicalOr(
-                       ...array_map( [ $this, 'matches' ], $values )
-               ) );
-       }
-}
index 407be20..06f0c9c 100644 (file)
@@ -1,7 +1,5 @@
 <?php
 /**
- * Base class for MediaWiki unit tests.
- *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
 
 use PHPUnit\Framework\TestCase;
 
+/**
+ * Base class for unit tests.
+ *
+ * Extend this class if you are testing classes which use dependency injection and do not access
+ * global functions, variables, services or a storage backend.
+ */
 abstract class MediaWikiUnitTestCase extends TestCase {
        use PHPUnit4And6Compat;
        use MediaWikiCoversValidator;
diff --git a/tests/phpunit/bootstrap.maintenance.php b/tests/phpunit/bootstrap.maintenance.php
new file mode 100644 (file)
index 0000000..6c9440c
--- /dev/null
@@ -0,0 +1,34 @@
+<?php
+/**
+ * Bootstrapping for MediaWiki PHPUnit tests when called via the maintenance class tests runner.
+ * This file is included by phpunit and is NOT in the global scope.
+ *
+ * @file
+ */
+
+if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
+       echo <<<EOF
+You are running these tests directly from phpunit. You may not have all globals correctly set.
+Running phpunit.php instead is recommended.
+EOF;
+       require_once __DIR__ . "/phpunit.php";
+}
+
+// The PHPUnit_TextUI_TestRunner class will run each test suite and may call
+// exit() with an exit status code. As such, we cannot run code "after the last test"
+// by adding statements to PHPUnitMaintClass::execute or MediaWikiPHPUnitCommand::run.
+// Instead, we work around it by registering a shutdown callback from the bootstrap
+// file, which runs before PHPUnit starts.
+// @todo Once we use PHPUnit 8 or higher, use the 'AfterLastTestHook' feature.
+// https://phpunit.readthedocs.io/en/8.0/extending-phpunit.html#available-hook-interfaces
+register_shutdown_function( function () {
+       // This will:
+       // - clear the temporary job queue.
+       // - allow extensions to delete any temporary tables they created.
+       // - restore ability to connect to the real database,
+       //   (for logging profiling data).
+       MediaWikiTestCase::teardownTestDB();
+
+       // Log profiling data, e.g. in the database or UDP
+       wfLogProfilingData();
+} );
index 79cb5be..258c822 100644 (file)
@@ -1,34 +1,67 @@
 <?php
+
 /**
- * Bootstrapping for MediaWiki PHPUnit tests
- * This file is included by phpunit and is NOT in the global scope.
+ * PHPUnit bootstrap file.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
  *
  * @file
+ * @ingroup Testing
+ */
+
+if ( PHP_SAPI !== 'cli' ) {
+       die( 'This file is only meant to be executed indirectly by PHPUnit\'s bootstrap process!' );
+}
+
+/**
+ * PHPUnit includes the bootstrap file inside a method body, while most MediaWiki startup files
+ * assume to be included in the global scope.
+ * This utility provides a way to include these files: it makes all globals available in the
+ * inclusion scope before including the file, then exports all new or changed globals.
+ *
+ * @param string $fileName the file to include
  */
+function wfRequireOnceInGlobalScope( $fileName ) {
+       // phpcs:disable MediaWiki.Usage.ForbiddenFunctions.extract
+       extract( $GLOBALS, EXTR_REFS | EXTR_SKIP );
+       // phpcs:enable
 
-if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
-       echo <<<EOF
-You are running these tests directly from phpunit. You may not have all globals correctly set.
-Running phpunit.php instead is recommended.
-EOF;
-       require_once __DIR__ . "/phpunit.php";
+       require_once $fileName;
+
+       foreach ( get_defined_vars() as $varName => $value ) {
+               $GLOBALS[$varName] = $value;
+       }
 }
 
-// The PHPUnit_TextUI_TestRunner class will run each test suite and may call
-// exit() with an exit status code. As such, we cannot run code "after the last test"
-// by adding statements to PHPUnitMaintClass::execute or MediaWikiPHPUnitCommand::run.
-// Instead, we work around it by registering a shutdown callback from the bootstrap
-// file, which runs before PHPUnit starts.
-// @todo Once we use PHPUnit 8 or higher, use the 'AfterLastTestHook' feature.
-// https://phpunit.readthedocs.io/en/8.0/extending-phpunit.html#available-hook-interfaces
-register_shutdown_function( function () {
-       // This will:
-       // - clear the temporary job queue.
-       // - allow extensions to delete any temporary tables they created.
-       // - restore ability to connect to the real database,
-       //   (for logging profiling data).
-       MediaWikiTestCase::teardownTestDB();
-
-       // Log profiling data, e.g. in the database or UDP
-       wfLogProfilingData();
-} );
+define( 'MEDIAWIKI', true );
+define( 'MW_PHPUNIT_TEST', true );
+
+// We don't use a settings file here but some code still assumes that one exists
+define( 'MW_CONFIG_FILE', 'LocalSettings.php' );
+
+$IP = realpath( __DIR__ . '/../../' );
+
+// these variables must be defined before setup runs
+$GLOBALS['IP'] = $IP;
+// Faking for Setup.php
+$GLOBALS['wgScopeTest'] = 'MediaWiki Setup.php scope test';
+$GLOBALS['wgCommandLineMode'] = true;
+$GLOBALS['wgAutoloadClasses'] = [];
+
+require_once "$IP/tests/common/TestSetup.php";
+
+wfRequireOnceInGlobalScope( "$IP/includes/AutoLoader.php" );
+wfRequireOnceInGlobalScope( "$IP/tests/common/TestsAutoLoader.php" );
diff --git a/tests/phpunit/includes/db/DatabaseSqliteTest.php b/tests/phpunit/includes/db/DatabaseSqliteTest.php
deleted file mode 100644 (file)
index 0f5c1f2..0000000
+++ /dev/null
@@ -1,553 +0,0 @@
-<?php
-
-use Psr\Log\NullLogger;
-use Wikimedia\Rdbms\Blob;
-use Wikimedia\Rdbms\Database;
-use Wikimedia\Rdbms\DatabaseSqlite;
-use Wikimedia\Rdbms\ResultWrapper;
-use Wikimedia\Rdbms\TransactionProfiler;
-use Wikimedia\TestingAccessWrapper;
-
-/**
- * @group sqlite
- * @group Database
- * @group medium
- */
-class DatabaseSqliteTest extends MediaWikiTestCase {
-       /** @var DatabaseSqlite */
-       protected $db;
-
-       protected function setUp() {
-               parent::setUp();
-
-               if ( !Sqlite::isPresent() ) {
-                       $this->markTestSkipped( 'No SQLite support detected' );
-               }
-               $this->db = $this->getMockBuilder( DatabaseSqlite::class )
-                       ->setConstructorArgs( [ [
-                               'dbFilePath' => ':memory:',
-                               'schema' => false,
-                               'host' => false,
-                               'user' => false,
-                               'password' => false,
-                               'tablePrefix' => '',
-                               'cliMode' => true,
-                               'agent' => 'unit-tests',
-                               'flags' => DBO_DEFAULT,
-                               'variables' => [],
-                               'profiler' => null,
-                               'trxProfiler' => new TransactionProfiler(),
-                               'connLogger' => new NullLogger(),
-                               'queryLogger' => new NullLogger(),
-                               'errorLogger' => null,
-                               'deprecationLogger' => null,
-                       ] ] )->setMethods( [ 'query' ] )
-                       ->getMock();
-               $this->db->initConnection();
-               $this->db->method( 'query' )->willReturn( true );
-               if ( version_compare( $this->db->getServerVersion(), '3.6.0', '<' ) ) {
-                       $this->markTestSkipped( "SQLite at least 3.6 required, {$this->db->getServerVersion()} found" );
-               }
-       }
-
-       /**
-        * @param $sql
-        * @return string|string[]|null
-        */
-       private function replaceVars( $sql ) {
-               $wrapper = TestingAccessWrapper::newFromObject( $this->db );
-               // normalize spacing to hide implementation details
-               return preg_replace( '/\s+/', ' ', $wrapper->replaceVars( $sql ) );
-       }
-
-       private function assertResultIs( $expected, $res ) {
-               $this->assertNotNull( $res );
-               $i = 0;
-               foreach ( $res as $row ) {
-                       foreach ( $expected[$i] as $key => $value ) {
-                               $this->assertTrue( isset( $row->$key ) );
-                               $this->assertEquals( $value, $row->$key );
-                       }
-                       $i++;
-               }
-               $this->assertEquals( count( $expected ), $i, 'Unexpected number of rows' );
-       }
-
-       public static function provideAddQuotes() {
-               return [
-                       [ // #0: empty
-                               '', "''"
-                       ],
-                       [ // #1: simple
-                               'foo bar', "'foo bar'"
-                       ],
-                       [ // #2: including quote
-                               'foo\'bar', "'foo''bar'"
-                       ],
-                       // #3: including \0 (must be represented as hex, per https://bugs.php.net/bug.php?id=63419)
-                       [
-                               "x\0y",
-                               "x'780079'",
-                       ],
-                       [ // #4: blob object (must be represented as hex)
-                               new Blob( "hello" ),
-                               "x'68656c6c6f'",
-                       ],
-                       [ // #5: null
-                               null,
-                               "''",
-                       ],
-               ];
-       }
-
-       /**
-        * @dataProvider provideAddQuotes()
-        * @covers DatabaseSqlite::addQuotes
-        */
-       public function testAddQuotes( $value, $expected ) {
-               // check quoting
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $this->assertEquals( $expected, $db->addQuotes( $value ), 'string not quoted as expected' );
-
-               // ok, quoting works as expected, now try a round trip.
-               $re = $db->query( 'select ' . $db->addQuotes( $value ) );
-
-               $this->assertTrue( $re !== false, 'query failed' );
-
-               $row = $re->fetchRow();
-               if ( $row ) {
-                       if ( $value instanceof Blob ) {
-                               $value = $value->fetch();
-                       }
-
-                       $this->assertEquals( $value, $row[0], 'string mangled by the database' );
-               } else {
-                       $this->fail( 'query returned no result' );
-               }
-       }
-
-       /**
-        * @covers DatabaseSqlite::replaceVars
-        */
-       public function testReplaceVars() {
-               $this->assertEquals( 'foo', $this->replaceVars( 'foo' ), "Don't break anything accidentally" );
-
-               $this->assertEquals(
-                       "CREATE TABLE /**/foo (foo_key INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, "
-                       . "foo_bar TEXT, foo_name TEXT NOT NULL DEFAULT '', foo_int INTEGER, foo_int2 INTEGER );",
-                       $this->replaceVars(
-                               "CREATE TABLE /**/foo (foo_key int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT, "
-                               . "foo_bar char(13), foo_name varchar(255) binary NOT NULL DEFAULT '', "
-                               . "foo_int tinyint ( 8 ), foo_int2 int(16) ) ENGINE=MyISAM;"
-                       )
-               );
-
-               $this->assertEquals(
-                       "CREATE TABLE foo ( foo1 REAL, foo2 REAL, foo3 REAL );",
-                       $this->replaceVars(
-                               "CREATE TABLE foo ( foo1 FLOAT, foo2 DOUBLE( 1,10), foo3 DOUBLE PRECISION );"
-                       )
-               );
-
-               $this->assertEquals( "CREATE TABLE foo ( foo_binary1 BLOB, foo_binary2 BLOB );",
-                       $this->replaceVars( "CREATE TABLE foo ( foo_binary1 binary(16), foo_binary2 varbinary(32) );" )
-               );
-
-               $this->assertEquals( "CREATE TABLE text ( text_foo TEXT );",
-                       $this->replaceVars( "CREATE TABLE text ( text_foo tinytext );" ),
-                       'Table name changed'
-               );
-
-               $this->assertEquals( "CREATE TABLE foo ( foobar INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL );",
-                       $this->replaceVars( "CREATE TABLE foo ( foobar INT PRIMARY KEY NOT NULL AUTO_INCREMENT );" )
-               );
-               $this->assertEquals( "CREATE TABLE foo ( foobar INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL );",
-                       $this->replaceVars( "CREATE TABLE foo ( foobar INT PRIMARY KEY AUTO_INCREMENT NOT NULL );" )
-               );
-
-               $this->assertEquals( "CREATE TABLE enums( enum1 TEXT, myenum TEXT)",
-                       $this->replaceVars( "CREATE TABLE enums( enum1 ENUM('A', 'B'), myenum ENUM ('X', 'Y'))" )
-               );
-
-               $this->assertEquals( "ALTER TABLE foo ADD COLUMN foo_bar INTEGER DEFAULT 42",
-                       $this->replaceVars( "ALTER TABLE foo\nADD COLUMN foo_bar int(10) unsigned DEFAULT 42" )
-               );
-
-               $this->assertEquals( "DROP INDEX foo",
-                       $this->replaceVars( "DROP INDEX /*i*/foo ON /*_*/bar" )
-               );
-
-               $this->assertEquals( "DROP INDEX foo -- dropping index",
-                       $this->replaceVars( "DROP INDEX /*i*/foo ON /*_*/bar -- dropping index" )
-               );
-               $this->assertEquals( "INSERT OR IGNORE INTO foo VALUES ('bar')",
-                       $this->replaceVars( "INSERT OR IGNORE INTO foo VALUES ('bar')" )
-               );
-       }
-
-       /**
-        * @covers DatabaseSqlite::tableName
-        */
-       public function testTableName() {
-               // @todo Moar!
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $this->assertEquals( 'foo', $db->tableName( 'foo' ) );
-               $this->assertEquals( 'sqlite_master', $db->tableName( 'sqlite_master' ) );
-               $db->tablePrefix( 'foo_' );
-               $this->assertEquals( 'sqlite_master', $db->tableName( 'sqlite_master' ) );
-               $this->assertEquals( 'foo_bar', $db->tableName( 'bar' ) );
-       }
-
-       /**
-        * @covers DatabaseSqlite::duplicateTableStructure
-        */
-       public function testDuplicateTableStructure() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $db->query( 'CREATE TABLE foo(foo, barfoo)' );
-               $db->query( 'CREATE INDEX index1 ON foo(foo)' );
-               $db->query( 'CREATE UNIQUE INDEX index2 ON foo(barfoo)' );
-
-               $db->duplicateTableStructure( 'foo', 'bar' );
-               $this->assertEquals( 'CREATE TABLE "bar"(foo, barfoo)',
-                       $db->selectField( 'sqlite_master', 'sql', [ 'name' => 'bar' ] ),
-                       'Normal table duplication'
-               );
-               $indexList = $db->query( 'PRAGMA INDEX_LIST("bar")' );
-               $index = $indexList->next();
-               $this->assertEquals( 'bar_index1', $index->name );
-               $this->assertEquals( '0', $index->unique );
-               $index = $indexList->next();
-               $this->assertEquals( 'bar_index2', $index->name );
-               $this->assertEquals( '1', $index->unique );
-
-               $db->duplicateTableStructure( 'foo', 'baz', true );
-               $this->assertEquals( 'CREATE TABLE "baz"(foo, barfoo)',
-                       $db->selectField( 'sqlite_temp_master', 'sql', [ 'name' => 'baz' ] ),
-                       'Creation of temporary duplicate'
-               );
-               $indexList = $db->query( 'PRAGMA INDEX_LIST("baz")' );
-               $index = $indexList->next();
-               $this->assertEquals( 'baz_index1', $index->name );
-               $this->assertEquals( '0', $index->unique );
-               $index = $indexList->next();
-               $this->assertEquals( 'baz_index2', $index->name );
-               $this->assertEquals( '1', $index->unique );
-               $this->assertEquals( 0,
-                       $db->selectField( 'sqlite_master', 'COUNT(*)', [ 'name' => 'baz' ] ),
-                       'Create a temporary duplicate only'
-               );
-       }
-
-       /**
-        * @covers DatabaseSqlite::duplicateTableStructure
-        */
-       public function testDuplicateTableStructureVirtual() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               if ( $db->getFulltextSearchModule() != 'FTS3' ) {
-                       $this->markTestSkipped( 'FTS3 not supported, cannot create virtual tables' );
-               }
-               $db->query( 'CREATE VIRTUAL TABLE "foo" USING FTS3(foobar)' );
-
-               $db->duplicateTableStructure( 'foo', 'bar' );
-               $this->assertEquals( 'CREATE VIRTUAL TABLE "bar" USING FTS3(foobar)',
-                       $db->selectField( 'sqlite_master', 'sql', [ 'name' => 'bar' ] ),
-                       'Duplication of virtual tables'
-               );
-
-               $db->duplicateTableStructure( 'foo', 'baz', true );
-               $this->assertEquals( 'CREATE VIRTUAL TABLE "baz" USING FTS3(foobar)',
-                       $db->selectField( 'sqlite_master', 'sql', [ 'name' => 'baz' ] ),
-                       "Can't create temporary virtual tables, should fall back to non-temporary duplication"
-               );
-       }
-
-       /**
-        * @covers DatabaseSqlite::deleteJoin
-        */
-       public function testDeleteJoin() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $db->query( 'CREATE TABLE a (a_1)', __METHOD__ );
-               $db->query( 'CREATE TABLE b (b_1, b_2)', __METHOD__ );
-               $db->insert( 'a', [
-                       [ 'a_1' => 1 ],
-                       [ 'a_1' => 2 ],
-                       [ 'a_1' => 3 ],
-               ],
-                       __METHOD__
-               );
-               $db->insert( 'b', [
-                       [ 'b_1' => 2, 'b_2' => 'a' ],
-                       [ 'b_1' => 3, 'b_2' => 'b' ],
-               ],
-                       __METHOD__
-               );
-               $db->deleteJoin( 'a', 'b', 'a_1', 'b_1', [ 'b_2' => 'a' ], __METHOD__ );
-               $res = $db->query( "SELECT * FROM a", __METHOD__ );
-               $this->assertResultIs( [
-                       [ 'a_1' => 1 ],
-                       [ 'a_1' => 3 ],
-               ],
-                       $res
-               );
-       }
-
-       /**
-        * @coversNothing
-        */
-       public function testEntireSchema() {
-               global $IP;
-
-               $result = Sqlite::checkSqlSyntax( "$IP/maintenance/tables.sql" );
-               if ( $result !== true ) {
-                       $this->fail( $result );
-               }
-               $this->assertTrue( true ); // avoid test being marked as incomplete due to lack of assertions
-       }
-
-       /**
-        * Runs upgrades of older databases and compares results with current schema
-        * @todo Currently only checks list of tables
-        * @coversNothing
-        */
-       public function testUpgrades() {
-               global $IP, $wgVersion, $wgProfiler;
-
-               // Versions tested
-               $versions = [
-                       // '1.13', disabled for now, was totally screwed up
-                       // SQLite wasn't included in 1.14
-                       '1.15',
-                       '1.16',
-                       '1.17',
-                       '1.18',
-                       '1.19',
-                       '1.20',
-                       '1.21',
-                       '1.22',
-                       '1.23',
-               ];
-
-               // Mismatches for these columns we can safely ignore
-               $ignoredColumns = [
-                       'user_newtalk.user_last_timestamp', // r84185
-               ];
-
-               $currentDB = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $currentDB->sourceFile( "$IP/maintenance/tables.sql" );
-
-               $profileToDb = false;
-               if ( isset( $wgProfiler['output'] ) ) {
-                       $out = $wgProfiler['output'];
-                       if ( $out === 'db' ) {
-                               $profileToDb = true;
-                       } elseif ( is_array( $out ) && in_array( 'db', $out ) ) {
-                               $profileToDb = true;
-                       }
-               }
-
-               if ( $profileToDb ) {
-                       $currentDB->sourceFile( "$IP/maintenance/sqlite/archives/patch-profiling.sql" );
-               }
-               $currentTables = $this->getTables( $currentDB );
-               sort( $currentTables );
-
-               foreach ( $versions as $version ) {
-                       $versions = "upgrading from $version to $wgVersion";
-                       $db = $this->prepareTestDB( $version );
-                       $tables = $this->getTables( $db );
-                       $this->assertEquals( $currentTables, $tables, "Different tables $versions" );
-                       foreach ( $tables as $table ) {
-                               $currentCols = $this->getColumns( $currentDB, $table );
-                               $cols = $this->getColumns( $db, $table );
-                               $this->assertEquals(
-                                       array_keys( $currentCols ),
-                                       array_keys( $cols ),
-                                       "Mismatching columns for table \"$table\" $versions"
-                               );
-                               foreach ( $currentCols as $name => $column ) {
-                                       $fullName = "$table.$name";
-                                       $this->assertEquals(
-                                               (bool)$column->pk,
-                                               (bool)$cols[$name]->pk,
-                                               "PRIMARY KEY status does not match for column $fullName $versions"
-                                       );
-                                       if ( !in_array( $fullName, $ignoredColumns ) ) {
-                                               $this->assertEquals(
-                                                       (bool)$column->notnull,
-                                                       (bool)$cols[$name]->notnull,
-                                                       "NOT NULL status does not match for column $fullName $versions"
-                                               );
-                                               $this->assertEquals(
-                                                       $column->dflt_value,
-                                                       $cols[$name]->dflt_value,
-                                                       "Default values does not match for column $fullName $versions"
-                                               );
-                                       }
-                               }
-                               $currentIndexes = $this->getIndexes( $currentDB, $table );
-                               $indexes = $this->getIndexes( $db, $table );
-                               $this->assertEquals(
-                                       array_keys( $currentIndexes ),
-                                       array_keys( $indexes ),
-                                       "mismatching indexes for table \"$table\" $versions"
-                               );
-                       }
-                       $db->close();
-               }
-       }
-
-       /**
-        * @covers DatabaseSqlite::insertId
-        */
-       public function testInsertIdType() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-
-               $databaseCreation = $db->query( 'CREATE TABLE a ( a_1 )', __METHOD__ );
-               $this->assertInstanceOf( ResultWrapper::class, $databaseCreation, "Database creation" );
-
-               $insertion = $db->insert( 'a', [ 'a_1' => 10 ], __METHOD__ );
-               $this->assertTrue( $insertion, "Insertion worked" );
-
-               $this->assertInternalType( 'integer', $db->insertId(), "Actual typecheck" );
-               $this->assertTrue( $db->close(), "closing database" );
-       }
-
-       /**
-        * @covers DatabaseSqlite::insert
-        */
-       public function testInsertAffectedRows() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $db->query( 'CREATE TABLE testInsertAffectedRows ( foo )', __METHOD__ );
-
-               $insertion = $db->insert(
-                       'testInsertAffectedRows',
-                       [
-                               [ 'foo' => 10 ],
-                               [ 'foo' => 12 ],
-                               [ 'foo' => 1555 ],
-                       ],
-                       __METHOD__
-               );
-               $this->assertTrue( $insertion, "Insertion worked" );
-
-               $this->assertSame( 3, $db->affectedRows() );
-               $this->assertTrue( $db->close(), "closing database" );
-       }
-
-       private function prepareTestDB( $version ) {
-               static $maint = null;
-               if ( $maint === null ) {
-                       $maint = new FakeMaintenance();
-                       $maint->loadParamsAndArgs( null, [ 'quiet' => 1 ] );
-               }
-
-               global $IP;
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $db->sourceFile( "$IP/tests/phpunit/data/db/sqlite/tables-$version.sql" );
-               $updater = DatabaseUpdater::newForDB( $db, false, $maint );
-               $updater->doUpdates( [ 'core' ] );
-
-               return $db;
-       }
-
-       private function getTables( $db ) {
-               $list = array_flip( $db->listTables() );
-               $excluded = [
-                       'external_user', // removed from core in 1.22
-                       'math', // moved out of core in 1.18
-                       'trackbacks', // removed from core in 1.19
-                       'searchindex',
-                       'searchindex_content',
-                       'searchindex_segments',
-                       'searchindex_segdir',
-                       // FTS4 ready!!1
-                       'searchindex_docsize',
-                       'searchindex_stat',
-               ];
-               foreach ( $excluded as $t ) {
-                       unset( $list[$t] );
-               }
-               $list = array_flip( $list );
-               sort( $list );
-
-               return $list;
-       }
-
-       private function getColumns( $db, $table ) {
-               $cols = [];
-               $res = $db->query( "PRAGMA table_info($table)" );
-               $this->assertNotNull( $res );
-               foreach ( $res as $col ) {
-                       $cols[$col->name] = $col;
-               }
-               ksort( $cols );
-
-               return $cols;
-       }
-
-       private function getIndexes( $db, $table ) {
-               $indexes = [];
-               $res = $db->query( "PRAGMA index_list($table)" );
-               $this->assertNotNull( $res );
-               foreach ( $res as $index ) {
-                       $res2 = $db->query( "PRAGMA index_info({$index->name})" );
-                       $this->assertNotNull( $res2 );
-                       $index->columns = [];
-                       foreach ( $res2 as $col ) {
-                               $index->columns[] = $col;
-                       }
-                       $indexes[$index->name] = $index;
-               }
-               ksort( $indexes );
-
-               return $indexes;
-       }
-
-       /**
-        * @coversNothing
-        */
-       public function testCaseInsensitiveLike() {
-               // TODO: Test this for all databases
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-               $res = $db->query( 'SELECT "a" LIKE "A" AS a' );
-               $row = $res->fetchRow();
-               $this->assertFalse( (bool)$row['a'] );
-       }
-
-       /**
-        * @covers DatabaseSqlite::numFields
-        */
-       public function testNumFields() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-
-               $databaseCreation = $db->query( 'CREATE TABLE a ( a_1 )', __METHOD__ );
-               $this->assertInstanceOf( ResultWrapper::class, $databaseCreation, "Failed to create table a" );
-               $res = $db->select( 'a', '*' );
-               $this->assertEquals( 0, $db->numFields( $res ), "expects to get 0 fields for an empty table" );
-               $insertion = $db->insert( 'a', [ 'a_1' => 10 ], __METHOD__ );
-               $this->assertTrue( $insertion, "Insertion failed" );
-               $res = $db->select( 'a', '*' );
-               $this->assertEquals( 1, $db->numFields( $res ), "wrong number of fields" );
-
-               $this->assertTrue( $db->close(), "closing database" );
-       }
-
-       /**
-        * @covers \Wikimedia\Rdbms\DatabaseSqlite::__toString
-        */
-       public function testToString() {
-               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
-
-               $toString = (string)$db;
-
-               $this->assertContains( 'sqlite object', $toString );
-       }
-
-       /**
-        * @covers \Wikimedia\Rdbms\DatabaseSqlite::getAttributes()
-        */
-       public function testsAttributes() {
-               $attributes = Database::attributesFromType( 'sqlite' );
-               $this->assertTrue( $attributes[Database::ATTR_DB_LEVEL_LOCKING] );
-       }
-}
diff --git a/tests/phpunit/integration/includes/db/DatabaseSqliteTest.php b/tests/phpunit/integration/includes/db/DatabaseSqliteTest.php
new file mode 100644 (file)
index 0000000..6fa911b
--- /dev/null
@@ -0,0 +1,553 @@
+<?php
+
+use Psr\Log\NullLogger;
+use Wikimedia\Rdbms\Blob;
+use Wikimedia\Rdbms\Database;
+use Wikimedia\Rdbms\DatabaseSqlite;
+use Wikimedia\Rdbms\ResultWrapper;
+use Wikimedia\Rdbms\TransactionProfiler;
+use Wikimedia\TestingAccessWrapper;
+
+/**
+ * @group sqlite
+ * @group Database
+ * @group medium
+ */
+class DatabaseSqliteTest extends \MediaWikiIntegrationTestCase {
+       /** @var DatabaseSqlite */
+       protected $db;
+
+       protected function setUp() {
+               parent::setUp();
+
+               if ( !Sqlite::isPresent() ) {
+                       $this->markTestSkipped( 'No SQLite support detected' );
+               }
+               $this->db = $this->getMockBuilder( DatabaseSqlite::class )
+                       ->setConstructorArgs( [ [
+                               'dbFilePath' => ':memory:',
+                               'schema' => false,
+                               'host' => false,
+                               'user' => false,
+                               'password' => false,
+                               'tablePrefix' => '',
+                               'cliMode' => true,
+                               'agent' => 'unit-tests',
+                               'flags' => DBO_DEFAULT,
+                               'variables' => [],
+                               'profiler' => null,
+                               'trxProfiler' => new TransactionProfiler(),
+                               'connLogger' => new NullLogger(),
+                               'queryLogger' => new NullLogger(),
+                               'errorLogger' => null,
+                               'deprecationLogger' => null,
+                       ] ] )->setMethods( [ 'query' ] )
+                       ->getMock();
+               $this->db->initConnection();
+               $this->db->method( 'query' )->willReturn( true );
+               if ( version_compare( $this->db->getServerVersion(), '3.6.0', '<' ) ) {
+                       $this->markTestSkipped( "SQLite at least 3.6 required, {$this->db->getServerVersion()} found" );
+               }
+       }
+
+       /**
+        * @param $sql
+        * @return string|string[]|null
+        */
+       private function replaceVars( $sql ) {
+               $wrapper = TestingAccessWrapper::newFromObject( $this->db );
+               // normalize spacing to hide implementation details
+               return preg_replace( '/\s+/', ' ', $wrapper->replaceVars( $sql ) );
+       }
+
+       private function assertResultIs( $expected, $res ) {
+               $this->assertNotNull( $res );
+               $i = 0;
+               foreach ( $res as $row ) {
+                       foreach ( $expected[$i] as $key => $value ) {
+                               $this->assertTrue( isset( $row->$key ) );
+                               $this->assertEquals( $value, $row->$key );
+                       }
+                       $i++;
+               }
+               $this->assertEquals( count( $expected ), $i, 'Unexpected number of rows' );
+       }
+
+       public static function provideAddQuotes() {
+               return [
+                       [ // #0: empty
+                               '', "''"
+                       ],
+                       [ // #1: simple
+                               'foo bar', "'foo bar'"
+                       ],
+                       [ // #2: including quote
+                               'foo\'bar', "'foo''bar'"
+                       ],
+                       // #3: including \0 (must be represented as hex, per https://bugs.php.net/bug.php?id=63419)
+                       [
+                               "x\0y",
+                               "x'780079'",
+                       ],
+                       [ // #4: blob object (must be represented as hex)
+                               new Blob( "hello" ),
+                               "x'68656c6c6f'",
+                       ],
+                       [ // #5: null
+                               null,
+                               "''",
+                       ],
+               ];
+       }
+
+       /**
+        * @dataProvider provideAddQuotes()
+        * @covers DatabaseSqlite::addQuotes
+        */
+       public function testAddQuotes( $value, $expected ) {
+               // check quoting
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $this->assertEquals( $expected, $db->addQuotes( $value ), 'string not quoted as expected' );
+
+               // ok, quoting works as expected, now try a round trip.
+               $re = $db->query( 'select ' . $db->addQuotes( $value ) );
+
+               $this->assertTrue( $re !== false, 'query failed' );
+
+               $row = $re->fetchRow();
+               if ( $row ) {
+                       if ( $value instanceof Blob ) {
+                               $value = $value->fetch();
+                       }
+
+                       $this->assertEquals( $value, $row[0], 'string mangled by the database' );
+               } else {
+                       $this->fail( 'query returned no result' );
+               }
+       }
+
+       /**
+        * @covers DatabaseSqlite::replaceVars
+        */
+       public function testReplaceVars() {
+               $this->assertEquals( 'foo', $this->replaceVars( 'foo' ), "Don't break anything accidentally" );
+
+               $this->assertEquals(
+                       "CREATE TABLE /**/foo (foo_key INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, "
+                       . "foo_bar TEXT, foo_name TEXT NOT NULL DEFAULT '', foo_int INTEGER, foo_int2 INTEGER );",
+                       $this->replaceVars(
+                               "CREATE TABLE /**/foo (foo_key int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT, "
+                               . "foo_bar char(13), foo_name varchar(255) binary NOT NULL DEFAULT '', "
+                               . "foo_int tinyint ( 8 ), foo_int2 int(16) ) ENGINE=MyISAM;"
+                       )
+               );
+
+               $this->assertEquals(
+                       "CREATE TABLE foo ( foo1 REAL, foo2 REAL, foo3 REAL );",
+                       $this->replaceVars(
+                               "CREATE TABLE foo ( foo1 FLOAT, foo2 DOUBLE( 1,10), foo3 DOUBLE PRECISION );"
+                       )
+               );
+
+               $this->assertEquals( "CREATE TABLE foo ( foo_binary1 BLOB, foo_binary2 BLOB );",
+                       $this->replaceVars( "CREATE TABLE foo ( foo_binary1 binary(16), foo_binary2 varbinary(32) );" )
+               );
+
+               $this->assertEquals( "CREATE TABLE text ( text_foo TEXT );",
+                       $this->replaceVars( "CREATE TABLE text ( text_foo tinytext );" ),
+                       'Table name changed'
+               );
+
+               $this->assertEquals( "CREATE TABLE foo ( foobar INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL );",
+                       $this->replaceVars( "CREATE TABLE foo ( foobar INT PRIMARY KEY NOT NULL AUTO_INCREMENT );" )
+               );
+               $this->assertEquals( "CREATE TABLE foo ( foobar INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL );",
+                       $this->replaceVars( "CREATE TABLE foo ( foobar INT PRIMARY KEY AUTO_INCREMENT NOT NULL );" )
+               );
+
+               $this->assertEquals( "CREATE TABLE enums( enum1 TEXT, myenum TEXT)",
+                       $this->replaceVars( "CREATE TABLE enums( enum1 ENUM('A', 'B'), myenum ENUM ('X', 'Y'))" )
+               );
+
+               $this->assertEquals( "ALTER TABLE foo ADD COLUMN foo_bar INTEGER DEFAULT 42",
+                       $this->replaceVars( "ALTER TABLE foo\nADD COLUMN foo_bar int(10) unsigned DEFAULT 42" )
+               );
+
+               $this->assertEquals( "DROP INDEX foo",
+                       $this->replaceVars( "DROP INDEX /*i*/foo ON /*_*/bar" )
+               );
+
+               $this->assertEquals( "DROP INDEX foo -- dropping index",
+                       $this->replaceVars( "DROP INDEX /*i*/foo ON /*_*/bar -- dropping index" )
+               );
+               $this->assertEquals( "INSERT OR IGNORE INTO foo VALUES ('bar')",
+                       $this->replaceVars( "INSERT OR IGNORE INTO foo VALUES ('bar')" )
+               );
+       }
+
+       /**
+        * @covers DatabaseSqlite::tableName
+        */
+       public function testTableName() {
+               // @todo Moar!
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $this->assertEquals( 'foo', $db->tableName( 'foo' ) );
+               $this->assertEquals( 'sqlite_master', $db->tableName( 'sqlite_master' ) );
+               $db->tablePrefix( 'foo_' );
+               $this->assertEquals( 'sqlite_master', $db->tableName( 'sqlite_master' ) );
+               $this->assertEquals( 'foo_bar', $db->tableName( 'bar' ) );
+       }
+
+       /**
+        * @covers DatabaseSqlite::duplicateTableStructure
+        */
+       public function testDuplicateTableStructure() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $db->query( 'CREATE TABLE foo(foo, barfoo)' );
+               $db->query( 'CREATE INDEX index1 ON foo(foo)' );
+               $db->query( 'CREATE UNIQUE INDEX index2 ON foo(barfoo)' );
+
+               $db->duplicateTableStructure( 'foo', 'bar' );
+               $this->assertEquals( 'CREATE TABLE "bar"(foo, barfoo)',
+                       $db->selectField( 'sqlite_master', 'sql', [ 'name' => 'bar' ] ),
+                       'Normal table duplication'
+               );
+               $indexList = $db->query( 'PRAGMA INDEX_LIST("bar")' );
+               $index = $indexList->next();
+               $this->assertEquals( 'bar_index1', $index->name );
+               $this->assertEquals( '0', $index->unique );
+               $index = $indexList->next();
+               $this->assertEquals( 'bar_index2', $index->name );
+               $this->assertEquals( '1', $index->unique );
+
+               $db->duplicateTableStructure( 'foo', 'baz', true );
+               $this->assertEquals( 'CREATE TABLE "baz"(foo, barfoo)',
+                       $db->selectField( 'sqlite_temp_master', 'sql', [ 'name' => 'baz' ] ),
+                       'Creation of temporary duplicate'
+               );
+               $indexList = $db->query( 'PRAGMA INDEX_LIST("baz")' );
+               $index = $indexList->next();
+               $this->assertEquals( 'baz_index1', $index->name );
+               $this->assertEquals( '0', $index->unique );
+               $index = $indexList->next();
+               $this->assertEquals( 'baz_index2', $index->name );
+               $this->assertEquals( '1', $index->unique );
+               $this->assertEquals( 0,
+                       $db->selectField( 'sqlite_master', 'COUNT(*)', [ 'name' => 'baz' ] ),
+                       'Create a temporary duplicate only'
+               );
+       }
+
+       /**
+        * @covers DatabaseSqlite::duplicateTableStructure
+        */
+       public function testDuplicateTableStructureVirtual() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               if ( $db->getFulltextSearchModule() != 'FTS3' ) {
+                       $this->markTestSkipped( 'FTS3 not supported, cannot create virtual tables' );
+               }
+               $db->query( 'CREATE VIRTUAL TABLE "foo" USING FTS3(foobar)' );
+
+               $db->duplicateTableStructure( 'foo', 'bar' );
+               $this->assertEquals( 'CREATE VIRTUAL TABLE "bar" USING FTS3(foobar)',
+                       $db->selectField( 'sqlite_master', 'sql', [ 'name' => 'bar' ] ),
+                       'Duplication of virtual tables'
+               );
+
+               $db->duplicateTableStructure( 'foo', 'baz', true );
+               $this->assertEquals( 'CREATE VIRTUAL TABLE "baz" USING FTS3(foobar)',
+                       $db->selectField( 'sqlite_master', 'sql', [ 'name' => 'baz' ] ),
+                       "Can't create temporary virtual tables, should fall back to non-temporary duplication"
+               );
+       }
+
+       /**
+        * @covers DatabaseSqlite::deleteJoin
+        */
+       public function testDeleteJoin() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $db->query( 'CREATE TABLE a (a_1)', __METHOD__ );
+               $db->query( 'CREATE TABLE b (b_1, b_2)', __METHOD__ );
+               $db->insert( 'a', [
+                       [ 'a_1' => 1 ],
+                       [ 'a_1' => 2 ],
+                       [ 'a_1' => 3 ],
+               ],
+                       __METHOD__
+               );
+               $db->insert( 'b', [
+                       [ 'b_1' => 2, 'b_2' => 'a' ],
+                       [ 'b_1' => 3, 'b_2' => 'b' ],
+               ],
+                       __METHOD__
+               );
+               $db->deleteJoin( 'a', 'b', 'a_1', 'b_1', [ 'b_2' => 'a' ], __METHOD__ );
+               $res = $db->query( "SELECT * FROM a", __METHOD__ );
+               $this->assertResultIs( [
+                       [ 'a_1' => 1 ],
+                       [ 'a_1' => 3 ],
+               ],
+                       $res
+               );
+       }
+
+       /**
+        * @coversNothing
+        */
+       public function testEntireSchema() {
+               global $IP;
+
+               $result = Sqlite::checkSqlSyntax( "$IP/maintenance/tables.sql" );
+               if ( $result !== true ) {
+                       $this->fail( $result );
+               }
+               $this->assertTrue( true ); // avoid test being marked as incomplete due to lack of assertions
+       }
+
+       /**
+        * Runs upgrades of older databases and compares results with current schema
+        * @todo Currently only checks list of tables
+        * @coversNothing
+        */
+       public function testUpgrades() {
+               global $IP, $wgVersion, $wgProfiler;
+
+               // Versions tested
+               $versions = [
+                       // '1.13', disabled for now, was totally screwed up
+                       // SQLite wasn't included in 1.14
+                       '1.15',
+                       '1.16',
+                       '1.17',
+                       '1.18',
+                       '1.19',
+                       '1.20',
+                       '1.21',
+                       '1.22',
+                       '1.23',
+               ];
+
+               // Mismatches for these columns we can safely ignore
+               $ignoredColumns = [
+                       'user_newtalk.user_last_timestamp', // r84185
+               ];
+
+               $currentDB = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $currentDB->sourceFile( "$IP/maintenance/tables.sql" );
+
+               $profileToDb = false;
+               if ( isset( $wgProfiler['output'] ) ) {
+                       $out = $wgProfiler['output'];
+                       if ( $out === 'db' ) {
+                               $profileToDb = true;
+                       } elseif ( is_array( $out ) && in_array( 'db', $out ) ) {
+                               $profileToDb = true;
+                       }
+               }
+
+               if ( $profileToDb ) {
+                       $currentDB->sourceFile( "$IP/maintenance/sqlite/archives/patch-profiling.sql" );
+               }
+               $currentTables = $this->getTables( $currentDB );
+               sort( $currentTables );
+
+               foreach ( $versions as $version ) {
+                       $versions = "upgrading from $version to $wgVersion";
+                       $db = $this->prepareTestDB( $version );
+                       $tables = $this->getTables( $db );
+                       $this->assertEquals( $currentTables, $tables, "Different tables $versions" );
+                       foreach ( $tables as $table ) {
+                               $currentCols = $this->getColumns( $currentDB, $table );
+                               $cols = $this->getColumns( $db, $table );
+                               $this->assertEquals(
+                                       array_keys( $currentCols ),
+                                       array_keys( $cols ),
+                                       "Mismatching columns for table \"$table\" $versions"
+                               );
+                               foreach ( $currentCols as $name => $column ) {
+                                       $fullName = "$table.$name";
+                                       $this->assertEquals(
+                                               (bool)$column->pk,
+                                               (bool)$cols[$name]->pk,
+                                               "PRIMARY KEY status does not match for column $fullName $versions"
+                                       );
+                                       if ( !in_array( $fullName, $ignoredColumns ) ) {
+                                               $this->assertEquals(
+                                                       (bool)$column->notnull,
+                                                       (bool)$cols[$name]->notnull,
+                                                       "NOT NULL status does not match for column $fullName $versions"
+                                               );
+                                               $this->assertEquals(
+                                                       $column->dflt_value,
+                                                       $cols[$name]->dflt_value,
+                                                       "Default values does not match for column $fullName $versions"
+                                               );
+                                       }
+                               }
+                               $currentIndexes = $this->getIndexes( $currentDB, $table );
+                               $indexes = $this->getIndexes( $db, $table );
+                               $this->assertEquals(
+                                       array_keys( $currentIndexes ),
+                                       array_keys( $indexes ),
+                                       "mismatching indexes for table \"$table\" $versions"
+                               );
+                       }
+                       $db->close();
+               }
+       }
+
+       /**
+        * @covers DatabaseSqlite::insertId
+        */
+       public function testInsertIdType() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+
+               $databaseCreation = $db->query( 'CREATE TABLE a ( a_1 )', __METHOD__ );
+               $this->assertInstanceOf( ResultWrapper::class, $databaseCreation, "Database creation" );
+
+               $insertion = $db->insert( 'a', [ 'a_1' => 10 ], __METHOD__ );
+               $this->assertTrue( $insertion, "Insertion worked" );
+
+               $this->assertInternalType( 'integer', $db->insertId(), "Actual typecheck" );
+               $this->assertTrue( $db->close(), "closing database" );
+       }
+
+       /**
+        * @covers DatabaseSqlite::insert
+        */
+       public function testInsertAffectedRows() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $db->query( 'CREATE TABLE testInsertAffectedRows ( foo )', __METHOD__ );
+
+               $insertion = $db->insert(
+                       'testInsertAffectedRows',
+                       [
+                               [ 'foo' => 10 ],
+                               [ 'foo' => 12 ],
+                               [ 'foo' => 1555 ],
+                       ],
+                       __METHOD__
+               );
+               $this->assertTrue( $insertion, "Insertion worked" );
+
+               $this->assertSame( 3, $db->affectedRows() );
+               $this->assertTrue( $db->close(), "closing database" );
+       }
+
+       private function prepareTestDB( $version ) {
+               static $maint = null;
+               if ( $maint === null ) {
+                       $maint = new FakeMaintenance();
+                       $maint->loadParamsAndArgs( null, [ 'quiet' => 1 ] );
+               }
+
+               global $IP;
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $db->sourceFile( "$IP/tests/phpunit/data/db/sqlite/tables-$version.sql" );
+               $updater = DatabaseUpdater::newForDB( $db, false, $maint );
+               $updater->doUpdates( [ 'core' ] );
+
+               return $db;
+       }
+
+       private function getTables( $db ) {
+               $list = array_flip( $db->listTables() );
+               $excluded = [
+                       'external_user', // removed from core in 1.22
+                       'math', // moved out of core in 1.18
+                       'trackbacks', // removed from core in 1.19
+                       'searchindex',
+                       'searchindex_content',
+                       'searchindex_segments',
+                       'searchindex_segdir',
+                       // FTS4 ready!!1
+                       'searchindex_docsize',
+                       'searchindex_stat',
+               ];
+               foreach ( $excluded as $t ) {
+                       unset( $list[$t] );
+               }
+               $list = array_flip( $list );
+               sort( $list );
+
+               return $list;
+       }
+
+       private function getColumns( $db, $table ) {
+               $cols = [];
+               $res = $db->query( "PRAGMA table_info($table)" );
+               $this->assertNotNull( $res );
+               foreach ( $res as $col ) {
+                       $cols[$col->name] = $col;
+               }
+               ksort( $cols );
+
+               return $cols;
+       }
+
+       private function getIndexes( $db, $table ) {
+               $indexes = [];
+               $res = $db->query( "PRAGMA index_list($table)" );
+               $this->assertNotNull( $res );
+               foreach ( $res as $index ) {
+                       $res2 = $db->query( "PRAGMA index_info({$index->name})" );
+                       $this->assertNotNull( $res2 );
+                       $index->columns = [];
+                       foreach ( $res2 as $col ) {
+                               $index->columns[] = $col;
+                       }
+                       $indexes[$index->name] = $index;
+               }
+               ksort( $indexes );
+
+               return $indexes;
+       }
+
+       /**
+        * @coversNothing
+        */
+       public function testCaseInsensitiveLike() {
+               // TODO: Test this for all databases
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+               $res = $db->query( 'SELECT "a" LIKE "A" AS a' );
+               $row = $res->fetchRow();
+               $this->assertFalse( (bool)$row['a'] );
+       }
+
+       /**
+        * @covers DatabaseSqlite::numFields
+        */
+       public function testNumFields() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+
+               $databaseCreation = $db->query( 'CREATE TABLE a ( a_1 )', __METHOD__ );
+               $this->assertInstanceOf( ResultWrapper::class, $databaseCreation, "Failed to create table a" );
+               $res = $db->select( 'a', '*' );
+               $this->assertEquals( 0, $db->numFields( $res ), "expects to get 0 fields for an empty table" );
+               $insertion = $db->insert( 'a', [ 'a_1' => 10 ], __METHOD__ );
+               $this->assertTrue( $insertion, "Insertion failed" );
+               $res = $db->select( 'a', '*' );
+               $this->assertEquals( 1, $db->numFields( $res ), "wrong number of fields" );
+
+               $this->assertTrue( $db->close(), "closing database" );
+       }
+
+       /**
+        * @covers \Wikimedia\Rdbms\DatabaseSqlite::__toString
+        */
+       public function testToString() {
+               $db = DatabaseSqlite::newStandaloneInstance( ':memory:' );
+
+               $toString = (string)$db;
+
+               $this->assertContains( 'sqlite object', $toString );
+       }
+
+       /**
+        * @covers \Wikimedia\Rdbms\DatabaseSqlite::getAttributes()
+        */
+       public function testsAttributes() {
+               $attributes = Database::attributesFromType( 'sqlite' );
+               $this->assertTrue( $attributes[Database::ATTR_DB_LEVEL_LOCKING] );
+       }
+}
index cc6ac31..d7d3c61 100644 (file)
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="./bootstrap.php"
+<phpunit bootstrap="./bootstrap.maintenance.php"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
 
diff --git a/tests/phpunit/unit-tests.xml b/tests/phpunit/unit-tests.xml
deleted file mode 100644 (file)
index cd4118c..0000000
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="unit/initUnitTests.php"
-                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-                xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
-
-                colors="true"
-                backupGlobals="false"
-                convertErrorsToExceptions="true"
-                convertNoticesToExceptions="true"
-                convertWarningsToExceptions="true"
-                forceCoversAnnotation="true"
-                stopOnFailure="false"
-                timeoutForSmallTests="10"
-                timeoutForMediumTests="30"
-                timeoutForLargeTests="60"
-                beStrictAboutTestsThatDoNotTestAnything="true"
-                beStrictAboutOutputDuringTests="true"
-                beStrictAboutTestSize="true"
-                verbose="false">
-       <testsuites>
-               <testsuite name="tests">
-                       <directory>unit</directory>
-               </testsuite>
-       </testsuites>
-       <groups>
-               <exclude>
-                       <group>Broken</group>
-               </exclude>
-       </groups>
-       <filter>
-               <whitelist addUncoveredFilesFromWhitelist="true">
-                       <directory suffix=".php">../../includes</directory>
-                       <directory suffix=".php">../../languages</directory>
-                       <directory suffix=".php">../../maintenance</directory>
-                       <exclude>
-                               <directory suffix=".php">../../languages/messages</directory>
-                               <file>../../languages/data/normalize-ar.php</file>
-                               <file>../../languages/data/normalize-ml.php</file>
-                       </exclude>
-               </whitelist>
-       </filter>
-</phpunit>
diff --git a/tests/phpunit/unit/initUnitTests.php b/tests/phpunit/unit/initUnitTests.php
deleted file mode 100644 (file)
index 2121877..0000000
+++ /dev/null
@@ -1,69 +0,0 @@
-<?php
-/**
- * PHPUnit bootstrap file for the unit test suite.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @file
- * @ingroup Testing
- */
-
-if ( PHP_SAPI !== 'cli' ) {
-       die( 'This file is only meant to be executed indirectly by PHPUnit\'s bootstrap process!' );
-}
-
-/**
- * PHPUnit includes the bootstrap file inside a method body, while most MediaWiki startup files
- * assume to be included in the global scope.
- * This utility provides a way to include these files: it makes all globals available in the
- * inclusion scope before including the file, then exports all new or changed globals.
- *
- * @param string $fileName the file to include
- */
-function wfRequireOnceInGlobalScope( $fileName ) {
-       // phpcs:disable MediaWiki.Usage.ForbiddenFunctions.extract
-       extract( $GLOBALS, EXTR_REFS | EXTR_SKIP );
-       // phpcs:enable
-
-       require_once $fileName;
-
-       foreach ( get_defined_vars() as $varName => $value ) {
-               $GLOBALS[$varName] = $value;
-       }
-}
-
-define( 'MEDIAWIKI', true );
-define( 'MW_PHPUNIT_TEST', true );
-
-// We don't use a settings file here but some code still assumes that one exists
-define( 'MW_CONFIG_FILE', 'LocalSettings.php' );
-
-$IP = realpath( __DIR__ . '/../../..' );
-
-// these variables must be defined before setup runs
-$GLOBALS['IP'] = $IP;
-$GLOBALS['wgCommandLineMode'] = true;
-
-require_once "$IP/tests/common/TestSetup.php";
-
-wfRequireOnceInGlobalScope( "$IP/includes/AutoLoader.php" );
-wfRequireOnceInGlobalScope( "$IP/includes/Defines.php" );
-wfRequireOnceInGlobalScope( "$IP/includes/DefaultSettings.php" );
-wfRequireOnceInGlobalScope( "$IP/includes/GlobalFunctions.php" );
-
-require_once "$IP/tests/common/TestsAutoLoader.php";
-
-TestSetup::applyInitialConfig();