tests/parser/parserTest.inc

   1 <?php
   2 /**
   3  * Helper code for the MediaWiki parser test suite. Some code is duplicated
   4  * in PHPUnit's NewParserTests.php, so you'll probably want to update both
   5  * at the same time.
   6  *
   7  * Copyright © 2004, 2010 Brion Vibber <brion@pobox.com>
   8  * https://www.mediawiki.org/
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  *
  25  * @todo Make this more independent of the configuration (and if possible the database)
  26  * @todo document
  27  * @file
  28  * @ingroup Testing
  29  */
  30
  31 /**
  32  * @ingroup Testing
  33  */
  34 class ParserTest {
  35         /**
  36          * @var bool $color whereas output should be colorized
  37          */
  38         private $color;
  39
  40         /**
  41          * @var bool $showOutput Show test output
  42          */
  43         private $showOutput;
  44
  45         /**
  46          * @var bool $useTemporaryTables Use temporary tables for the temporary database
  47          */
  48         private $useTemporaryTables = true;
  49
  50         /**
  51          * @var bool $databaseSetupDone True if the database has been set up
  52          */
  53         private $databaseSetupDone = false;
  54
  55         /**
  56          * Our connection to the database
  57          * @var DatabaseBase
  58          */
  59         private $db;
  60
  61         /**
  62          * Database clone helper
  63          * @var CloneDatabase
  64          */
  65         private $dbClone;
  66
  67         /**
  68          * @var string $oldTablePrefix Original table prefix
  69          */
  70         private $oldTablePrefix;
  71
  72         private $maxFuzzTestLength = 300;
  73         private $fuzzSeed = 0;
  74         private $memoryLimit = 50;
  75         private $uploadDir = null;
  76
  77         public $regex = "";
  78         private $savedGlobals = array();
  79
  80         /**
  81          * Sets terminal colorization and diff/quick modes depending on OS and
  82          * command-line options (--color and --quick).
  83          * @param array $options
  84          */
  85         public function __construct( $options = array() ) {
  86                 # Only colorize output if stdout is a terminal.
  87                 $this->color = !wfIsWindows() && Maintenance::posix_isatty( 1 );
  88
  89                 if ( isset( $options['color'] ) ) {
  90                         switch ( $options['color'] ) {
  91                                 case 'no':
  92                                         $this->color = false;
  93                                         break;
  94                                 case 'yes':
  95                                 default:
  96                                         $this->color = true;
  97                                         break;
  98                         }
  99                 }
 100
 101                 $this->term = $this->color
 102                         ? new AnsiTermColorer()
 103                         : new DummyTermColorer();
 104
 105                 $this->showDiffs = !isset( $options['quick'] );
 106                 $this->showProgress = !isset( $options['quiet'] );
 107                 $this->showFailure = !(
 108                         isset( $options['quiet'] )
 109                                 && ( isset( $options['record'] )
 110                                 || isset( $options['compare'] ) ) ); // redundant output
 111
 112                 $this->showOutput = isset( $options['show-output'] );
 113
 114                 if ( isset( $options['filter'] ) ) {
 115                         $options['regex'] = $options['filter'];
 116                 }
 117
 118                 if ( isset( $options['regex'] ) ) {
 119                         if ( isset( $options['record'] ) ) {
 120                                 echo "Warning: --record cannot be used with --regex, disabling --record\n";
 121                                 unset( $options['record'] );
 122                         }
 123                         $this->regex = $options['regex'];
 124                 } else {
 125                         # Matches anything
 126                         $this->regex = '';
 127                 }
 128
 129                 $this->setupRecorder( $options );
 130                 $this->keepUploads = isset( $options['keep-uploads'] );
 131
 132                 if ( isset( $options['seed'] ) ) {
 133                         $this->fuzzSeed = intval( $options['seed'] ) - 1;
 134                 }
 135
 136                 $this->runDisabled = isset( $options['run-disabled'] );
 137                 $this->runParsoid = isset( $options['run-parsoid'] );
 138
 139                 $this->hooks = array();
 140                 $this->functionHooks = array();
 141                 self::setUp();
 142         }
 143
 144         static function setUp() {
 145                 global $wgParser, $wgParserConf, $IP, $messageMemc, $wgMemc,
 146                         $wgUser, $wgLang, $wgOut, $wgRequest, $wgStyleDirectory, $wgEnableParserCache,
 147                         $wgExtraNamespaces, $wgNamespaceAliases, $wgNamespaceProtection, $wgLocalFileRepo,
 148                         $parserMemc, $wgThumbnailScriptPath, $wgScriptPath,
 149                         $wgArticlePath, $wgScript, $wgStylePath, $wgExtensionAssetsPath,
 150                         $wgMainCacheType, $wgMessageCacheType, $wgParserCacheType, $wgLockManagers;
 151
 152                 $wgScript = '/index.php';
 153                 $wgScriptPath = '/';
 154                 $wgArticlePath = '/wiki/$1';
 155                 $wgStylePath = '/skins';
 156                 $wgExtensionAssetsPath = '/extensions';
 157                 $wgThumbnailScriptPath = false;
 158                 $wgLockManagers = array( array(
 159                         'name' => 'fsLockManager',
 160                         'class' => 'FSLockManager',
 161                         'lockDirectory' => wfTempDir() . '/test-repo/lockdir',
 162                 ), array(
 163                         'name' => 'nullLockManager',
 164                         'class' => 'NullLockManager',
 165                 ) );
 166                 $wgLocalFileRepo = array(
 167                         'class' => 'LocalRepo',
 168                         'name' => 'local',
 169                         'url' => 'http://example.com/images',
 170                         'hashLevels' => 2,
 171                         'transformVia404' => false,
 172                         'backend' => new FSFileBackend( array(
 173                                 'name' => 'local-backend',
 174                                 'wikiId' => wfWikiId(),
 175                                 'containerPaths' => array(
 176                                         'local-public' => wfTempDir() . '/test-repo/public',
 177                                         'local-thumb' => wfTempDir() . '/test-repo/thumb',
 178                                         'local-temp' => wfTempDir() . '/test-repo/temp',
 179                                         'local-deleted' => wfTempDir() . '/test-repo/deleted',
 180                                 )
 181                         ) )
 182                 );
 183                 $wgNamespaceProtection[NS_MEDIAWIKI] = 'editinterface';
 184                 $wgNamespaceAliases['Image'] = NS_FILE;
 185                 $wgNamespaceAliases['Image_talk'] = NS_FILE_TALK;
 186                 # add a namespace shadowing a interwiki link, to test
 187                 # proper precedence when resolving links. (bug 51680)
 188                 $wgExtraNamespaces[100] = 'MemoryAlpha';
 189
 190                 // XXX: tests won't run without this (for CACHE_DB)
 191                 if ( $wgMainCacheType === CACHE_DB ) {
 192                         $wgMainCacheType = CACHE_NONE;
 193                 }
 194                 if ( $wgMessageCacheType === CACHE_DB ) {
 195                         $wgMessageCacheType = CACHE_NONE;
 196                 }
 197                 if ( $wgParserCacheType === CACHE_DB ) {
 198                         $wgParserCacheType = CACHE_NONE;
 199                 }
 200
 201                 $wgEnableParserCache = false;
 202                 DeferredUpdates::clearPendingUpdates();
 203                 $wgMemc = wfGetMainCache(); // checks $wgMainCacheType
 204                 $messageMemc = wfGetMessageCacheStorage();
 205                 $parserMemc = wfGetParserCacheStorage();
 206
 207                 // $wgContLang = new StubContLang;
 208                 $wgUser = new User;
 209                 $context = new RequestContext;
 210                 $wgLang = $context->getLanguage();
 211                 $wgOut = $context->getOutput();
 212                 $wgParser = new StubObject( 'wgParser', $wgParserConf['class'], array( $wgParserConf ) );
 213                 $wgRequest = $context->getRequest();
 214
 215                 if ( $wgStyleDirectory === false ) {
 216                         $wgStyleDirectory = "$IP/skins";
 217                 }
 218
 219                 self::setupInterwikis();
 220         }
 221
 222         /**
 223          * Insert hardcoded interwiki in the lookup table.
 224          *
 225          * This function insert a set of well known interwikis that are used in
 226          * the parser tests. They can be considered has fixtures are injected in
 227          * the interwiki cache by using the 'InterwikiLoadPrefix' hook.
 228          * Since we are not interested in looking up interwikis in the database,
 229          * the hook completely replace the existing mechanism (hook returns false).
 230          */
 231         public static function setupInterwikis() {
 232                 # Hack: insert a few Wikipedia in-project interwiki prefixes,
 233                 # for testing inter-language links
 234                 Hooks::register( 'InterwikiLoadPrefix', function ( $prefix, &$iwData ) {
 235                         static $testInterwikis = array(
 236                                 'wikipedia' => array(
 237                                         'iw_url' => 'http://en.wikipedia.org/wiki/$1',
 238                                         'iw_api' => '',
 239                                         'iw_wikiid' => '',
 240                                         'iw_local' => 0 ),
 241                                 'meatball' => array(
 242                                         'iw_url' => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 243                                         'iw_api' => '',
 244                                         'iw_wikiid' => '',
 245                                         'iw_local' => 0 ),
 246                                 'memoryalpha' => array(
 247                                         'iw_url' => 'http://www.memory-alpha.org/en/index.php/$1',
 248                                         'iw_api' => '',
 249                                         'iw_wikiid' => '',
 250                                         'iw_local' => 0 ),
 251                                 'zh' => array(
 252                                         'iw_url' => 'http://zh.wikipedia.org/wiki/$1',
 253                                         'iw_api' => '',
 254                                         'iw_wikiid' => '',
 255                                         'iw_local' => 1 ),
 256                                 'es' => array(
 257                                         'iw_url' => 'http://es.wikipedia.org/wiki/$1',
 258                                         'iw_api' => '',
 259                                         'iw_wikiid' => '',
 260                                         'iw_local' => 1 ),
 261                                 'fr' => array(
 262                                         'iw_url' => 'http://fr.wikipedia.org/wiki/$1',
 263                                         'iw_api' => '',
 264                                         'iw_wikiid' => '',
 265                                         'iw_local' => 1 ),
 266                                 'ru' => array(
 267                                         'iw_url' => 'http://ru.wikipedia.org/wiki/$1',
 268                                         'iw_api' => '',
 269                                         'iw_wikiid' => '',
 270                                         'iw_local' => 1 ),
 271                         );
 272                         if ( array_key_exists( $prefix, $testInterwikis ) ) {
 273                                 $iwData = $testInterwikis[$prefix];
 274                         }
 275
 276                         // We only want to rely on the above fixtures
 277                         return false;
 278                 } );// hooks::register
 279         }
 280
 281         /**
 282          * Remove the hardcoded interwiki lookup table.
 283          */
 284         public static function tearDownInterwikis() {
 285                 Hooks::clear( 'InterwikiLoadPrefix' );
 286         }
 287
 288         public function setupRecorder( $options ) {
 289                 if ( isset( $options['record'] ) ) {
 290                         $this->recorder = new DbTestRecorder( $this );
 291                         $this->recorder->version = isset( $options['setversion'] ) ?
 292                                 $options['setversion'] : SpecialVersion::getVersion();
 293                 } elseif ( isset( $options['compare'] ) ) {
 294                         $this->recorder = new DbTestPreviewer( $this );
 295                 } else {
 296                         $this->recorder = new TestRecorder( $this );
 297                 }
 298         }
 299
 300         /**
 301          * Remove last character if it is a newline
 302          * @group utility
 303          * @param string $s
 304          */
 305         public static function chomp( $s ) {
 306                 if ( substr( $s, -1 ) === "\n" ) {
 307                         return substr( $s, 0, -1 );
 308                 } else {
 309                         return $s;
 310                 }
 311         }
 312
 313         /**
 314          * Run a fuzz test series
 315          * Draw input from a set of test files
 316          * @param array $filenames
 317          */
 318         function fuzzTest( $filenames ) {
 319                 $GLOBALS['wgContLang'] = Language::factory( 'en' );
 320                 $dict = $this->getFuzzInput( $filenames );
 321                 $dictSize = strlen( $dict );
 322                 $logMaxLength = log( $this->maxFuzzTestLength );
 323                 $this->setupDatabase();
 324                 ini_set( 'memory_limit', $this->memoryLimit * 1048576 );
 325
 326                 $numTotal = 0;
 327                 $numSuccess = 0;
 328                 $user = new User;
 329                 $opts = ParserOptions::newFromUser( $user );
 330                 $title = Title::makeTitle( NS_MAIN, 'Parser_test' );
 331
 332                 while ( true ) {
 333                         // Generate test input
 334                         mt_srand( ++$this->fuzzSeed );
 335                         $totalLength = mt_rand( 1, $this->maxFuzzTestLength );
 336                         $input = '';
 337
 338                         while ( strlen( $input ) < $totalLength ) {
 339                                 $logHairLength = mt_rand( 0, 1000000 ) / 1000000 * $logMaxLength;
 340                                 $hairLength = min( intval( exp( $logHairLength ) ), $dictSize );
 341                                 $offset = mt_rand( 0, $dictSize - $hairLength );
 342                                 $input .= substr( $dict, $offset, $hairLength );
 343                         }
 344
 345                         $this->setupGlobals();
 346                         $parser = $this->getParser();
 347
 348                         // Run the test
 349                         try {
 350                                 $parser->parse( $input, $title, $opts );
 351                                 $fail = false;
 352                         } catch ( Exception $exception ) {
 353                                 $fail = true;
 354                         }
 355
 356                         if ( $fail ) {
 357                                 echo "Test failed with seed {$this->fuzzSeed}\n";
 358                                 echo "Input:\n";
 359                                 printf( "string(%d) \"%s\"\n\n", strlen( $input ), $input );
 360                                 echo "$exception\n";
 361                         } else {
 362                                 $numSuccess++;
 363                         }
 364
 365                         $numTotal++;
 366                         $this->teardownGlobals();
 367                         $parser->__destruct();
 368
 369                         if ( $numTotal % 100 == 0 ) {
 370                                 $usage = intval( memory_get_usage( true ) / $this->memoryLimit / 1048576 * 100 );
 371                                 echo "{$this->fuzzSeed}: $numSuccess/$numTotal (mem: $usage%)\n";
 372                                 if ( $usage > 90 ) {
 373                                         echo "Out of memory:\n";
 374                                         $memStats = $this->getMemoryBreakdown();
 375
 376                                         foreach ( $memStats as $name => $usage ) {
 377                                                 echo "$name: $usage\n";
 378                                         }
 379                                         $this->abort();
 380                                 }
 381                         }
 382                 }
 383         }
 384
 385         /**
 386          * Get an input dictionary from a set of parser test files
 387          * @param array $filenames
 388          */
 389         function getFuzzInput( $filenames ) {
 390                 $dict = '';
 391
 392                 foreach ( $filenames as $filename ) {
 393                         $contents = file_get_contents( $filename );
 394                         preg_match_all( '/!!\s*(input|wikitext)\n(.*?)\n!!\s*(result|html|html\/\*|html\/php)/s', $contents, $matches );
 395
 396                         foreach ( $matches[1] as $match ) {
 397                                 $dict .= $match . "\n";
 398                         }
 399                 }
 400
 401                 return $dict;
 402         }
 403
 404         /**
 405          * Get a memory usage breakdown
 406          */
 407         function getMemoryBreakdown() {
 408                 $memStats = array();
 409
 410                 foreach ( $GLOBALS as $name => $value ) {
 411                         $memStats['$' . $name] = strlen( serialize( $value ) );
 412                 }
 413
 414                 $classes = get_declared_classes();
 415
 416                 foreach ( $classes as $class ) {
 417                         $rc = new ReflectionClass( $class );
 418                         $props = $rc->getStaticProperties();
 419                         $memStats[$class] = strlen( serialize( $props ) );
 420                         $methods = $rc->getMethods();
 421
 422                         foreach ( $methods as $method ) {
 423                                 $memStats[$class] += strlen( serialize( $method->getStaticVariables() ) );
 424                         }
 425                 }
 426
 427                 $functions = get_defined_functions();
 428
 429                 foreach ( $functions['user'] as $function ) {
 430                         $rf = new ReflectionFunction( $function );
 431                         $memStats["$function()"] = strlen( serialize( $rf->getStaticVariables() ) );
 432                 }
 433
 434                 asort( $memStats );
 435
 436                 return $memStats;
 437         }
 438
 439         function abort() {
 440                 $this->abort();
 441         }
 442
 443         /**
 444          * Run a series of tests listed in the given text files.
 445          * Each test consists of a brief description, wikitext input,
 446          * and the expected HTML output.
 447          *
 448          * Prints status updates on stdout and counts up the total
 449          * number and percentage of passed tests.
 450          *
 451          * @param array $filenames Array of strings
 452          * @return bool True if passed all tests, false if any tests failed.
 453          */
 454         public function runTestsFromFiles( $filenames ) {
 455                 $ok = false;
 456
 457                 // be sure, ParserTest::addArticle has correct language set,
 458                 // so that system messages gets into the right language cache
 459                 $GLOBALS['wgLanguageCode'] = 'en';
 460                 $GLOBALS['wgContLang'] = Language::factory( 'en' );
 461
 462                 $this->recorder->start();
 463                 try {
 464                         $this->setupDatabase();
 465                         $ok = true;
 466
 467                         foreach ( $filenames as $filename ) {
 468                                 $tests = new TestFileIterator( $filename, $this );
 469                                 $ok = $this->runTests( $tests ) && $ok;
 470                         }
 471
 472                         $this->teardownDatabase();
 473                         $this->recorder->report();
 474                 } catch ( DBError $e ) {
 475                         echo $e->getMessage();
 476                 }
 477                 $this->recorder->end();
 478
 479                 return $ok;
 480         }
 481
 482         function runTests( $tests ) {
 483                 $ok = true;
 484
 485                 foreach ( $tests as $t ) {
 486                         $result =
 487                                 $this->runTest( $t['test'], $t['input'], $t['result'], $t['options'], $t['config'] );
 488                         $ok = $ok && $result;
 489                         $this->recorder->record( $t['test'], $result );
 490                 }
 491
 492                 if ( $this->showProgress ) {
 493                         print "\n";
 494                 }
 495
 496                 return $ok;
 497         }
 498
 499         /**
 500          * Get a Parser object
 501          *
 502          * @param string $preprocessor
 503          * @return Parser
 504          */
 505         function getParser( $preprocessor = null ) {
 506                 global $wgParserConf;
 507
 508                 $class = $wgParserConf['class'];
 509                 $parser = new $class( array( 'preprocessorClass' => $preprocessor ) + $wgParserConf );
 510
 511                 foreach ( $this->hooks as $tag => $callback ) {
 512                         $parser->setHook( $tag, $callback );
 513                 }
 514
 515                 foreach ( $this->functionHooks as $tag => $bits ) {
 516                         list( $callback, $flags ) = $bits;
 517                         $parser->setFunctionHook( $tag, $callback, $flags );
 518                 }
 519
 520                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 521
 522                 return $parser;
 523         }
 524
 525         /**
 526          * Run a given wikitext input through a freshly-constructed wiki parser,
 527          * and compare the output against the expected results.
 528          * Prints status and explanatory messages to stdout.
 529          *
 530          * @param string $desc Test's description
 531          * @param string $input Wikitext to try rendering
 532          * @param string $result Result to output
 533          * @param array $opts Test's options
 534          * @param string $config Overrides for global variables, one per line
 535          * @return bool
 536          */
 537         public function runTest( $desc, $input, $result, $opts, $config ) {
 538                 if ( $this->showProgress ) {
 539                         $this->showTesting( $desc );
 540                 }
 541
 542                 $opts = $this->parseOptions( $opts );
 543                 $context = $this->setupGlobals( $opts, $config );
 544
 545                 $user = $context->getUser();
 546                 $options = ParserOptions::newFromContext( $context );
 547
 548                 if ( isset( $opts['title'] ) ) {
 549                         $titleText = $opts['title'];
 550                 } else {
 551                         $titleText = 'Parser test';
 552                 }
 553
 554                 $local = isset( $opts['local'] );
 555                 $preprocessor = isset( $opts['preprocessor'] ) ? $opts['preprocessor'] : null;
 556                 $parser = $this->getParser( $preprocessor );
 557                 $title = Title::newFromText( $titleText );
 558
 559                 if ( isset( $opts['pst'] ) ) {
 560                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 561                 } elseif ( isset( $opts['msg'] ) ) {
 562                         $out = $parser->transformMsg( $input, $options, $title );
 563                 } elseif ( isset( $opts['section'] ) ) {
 564                         $section = $opts['section'];
 565                         $out = $parser->getSection( $input, $section );
 566                 } elseif ( isset( $opts['replace'] ) ) {
 567                         $section = $opts['replace'][0];
 568                         $replace = $opts['replace'][1];
 569                         $out = $parser->replaceSection( $input, $section, $replace );
 570                 } elseif ( isset( $opts['comment'] ) ) {
 571                         $out = Linker::formatComment( $input, $title, $local );
 572                 } elseif ( isset( $opts['preload'] ) ) {
 573                         $out = $parser->getPreloadText( $input, $title, $options );
 574                 } else {
 575                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 576                         $output->setTOCEnabled( !isset( $opts['notoc'] ) );
 577                         $out = $output->getText();
 578
 579                         if ( isset( $opts['showtitle'] ) ) {
 580                                 if ( $output->getTitleText() ) {
 581                                         $title = $output->getTitleText();
 582                                 }
 583
 584                                 $out = "$title\n$out";
 585                         }
 586
 587                         if ( isset( $opts['ill'] ) ) {
 588                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 589                         } elseif ( isset( $opts['cat'] ) ) {
 590                                 $outputPage = $context->getOutput();
 591                                 $outputPage->addCategoryLinks( $output->getCategories() );
 592                                 $cats = $outputPage->getCategoryLinks();
 593
 594                                 if ( isset( $cats['normal'] ) ) {
 595                                         $out = $this->tidy( implode( ' ', $cats['normal'] ) );
 596                                 } else {
 597                                         $out = '';
 598                                 }
 599                         }
 600
 601                         $result = $this->tidy( $result );
 602                 }
 603
 604                 $this->teardownGlobals();
 605
 606                 $testResult = new ParserTestResult( $desc );
 607                 $testResult->expected = $result;
 608                 $testResult->actual = $out;
 609
 610                 return $this->showTestResult( $testResult );
 611         }
 612
 613         /**
 614          * Refactored in 1.22 to use ParserTestResult
 615          * @param ParserTestResult $testResult
 616          */
 617         function showTestResult( ParserTestResult $testResult ) {
 618                 if ( $testResult->isSuccess() ) {
 619                         $this->showSuccess( $testResult );
 620                         return true;
 621                 } else {
 622                         $this->showFailure( $testResult );
 623                         return false;
 624                 }
 625         }
 626
 627         /**
 628          * Use a regex to find out the value of an option
 629          * @param string $key Name of option val to retrieve
 630          * @param array $opts Options array to look in
 631          * @param mixed $default Default value returned if not found
 632          */
 633         private static function getOptionValue( $key, $opts, $default ) {
 634                 $key = strtolower( $key );
 635
 636                 if ( isset( $opts[$key] ) ) {
 637                         return $opts[$key];
 638                 } else {
 639                         return $default;
 640                 }
 641         }
 642
 643         private function parseOptions( $instring ) {
 644                 $opts = array();
 645                 // foo
 646                 // foo=bar
 647                 // foo="bar baz"
 648                 // foo=[[bar baz]]
 649                 // foo=bar,"baz quux"
 650                 // foo={...json...}
 651                 $defs = '(?(DEFINE)
 652                         (?<qstr>                                        # Quoted string
 653                                 "
 654                                 (?:[^\\\\"] | \\\\.)*
 655                                 "
 656                         )
 657                         (?<json>
 658                                 \{              # Open bracket
 659                                 (?:
 660                                         [^"{}] |                                # Not a quoted string or object, or
 661                                         (?&qstr) |                              # A quoted string, or
 662                                         (?&json)                                # A json object (recursively)
 663                                 )*
 664                                 \}              # Close bracket
 665                         )
 666             (?<value>
 667                                 (?:
 668                                         (?&qstr)                        # Quoted val
 669                                 |
 670                                         \[\[
 671                                                 [^]]*                   # Link target
 672                                         \]\]
 673                                 |
 674                                         [\w-]+                          # Plain word
 675                                 |
 676                                         (?&json)                        # JSON object
 677                                 )
 678                         )
 679                 )';
 680                 $regex = '/' . $defs . '\b
 681                         (?<k>[\w-]+)                            # Key
 682                         \b
 683                         (?:\s*
 684                                 =                                               # First sub-value
 685                                 \s*
 686                                 (?<v>
 687                                         (?&value)
 688                                         (?:\s*
 689                                                 ,                               # Sub-vals 1..N
 690                                                 \s*
 691                                                 (?&value)
 692                                         )*
 693                                 )
 694                         )?
 695                         /x';
 696                 $valueregex = '/' . $defs . '(?&value)/x';
 697
 698                 if ( preg_match_all( $regex, $instring, $matches, PREG_SET_ORDER ) ) {
 699                         foreach ( $matches as $bits ) {
 700                                 $key = strtolower( $bits[ 'k' ] );
 701                                 if ( !isset( $bits[ 'v' ] ) ) {
 702                                         $opts[$key] = true;
 703                                 } else {
 704                                         preg_match_all( $valueregex, $bits[ 'v' ], $vmatches );
 705                                         $opts[$key] = array_map( array( $this, 'cleanupOption' ), $vmatches[0] );
 706                                         if ( count( $opts[$key] ) == 1 ) {
 707                                                 $opts[$key] = $opts[$key][0];
 708                                         }
 709                                 }
 710                         }
 711                 }
 712                 return $opts;
 713         }
 714
 715         private function cleanupOption( $opt ) {
 716                 if ( substr( $opt, 0, 1 ) == '"' ) {
 717                         return stripcslashes( substr( $opt, 1, -1 ) );
 718                 }
 719
 720                 if ( substr( $opt, 0, 2 ) == '[[' ) {
 721                         return substr( $opt, 2, -2 );
 722                 }
 723
 724                 if ( substr( $opt, 0, 1 ) == '{' ) {
 725                         return FormatJson::decode( $opt, true );
 726                 }
 727                 return $opt;
 728         }
 729
 730         /**
 731          * Set up the global variables for a consistent environment for each test.
 732          * Ideally this should replace the global configuration entirely.
 733          * @param string $opts
 734          * @param string $config
 735          */
 736         private function setupGlobals( $opts = '', $config = '' ) {
 737                 # Find out values for some special options.
 738                 $lang =
 739                         self::getOptionValue( 'language', $opts, 'en' );
 740                 $variant =
 741                         self::getOptionValue( 'variant', $opts, false );
 742                 $maxtoclevel =
 743                         self::getOptionValue( 'wgMaxTocLevel', $opts, 999 );
 744                 $linkHolderBatchSize =
 745                         self::getOptionValue( 'wgLinkHolderBatchSize', $opts, 1000 );
 746
 747                 $settings = array(
 748                         'wgServer' => 'http://example.org',
 749                         'wgScript' => '/index.php',
 750                         'wgScriptPath' => '/',
 751                         'wgArticlePath' => '/wiki/$1',
 752                         'wgActionPaths' => array(),
 753                         'wgLockManagers' => array( array(
 754                                 'name' => 'fsLockManager',
 755                                 'class' => 'FSLockManager',
 756                                 'lockDirectory' => $this->uploadDir . '/lockdir',
 757                         ), array(
 758                                 'name' => 'nullLockManager',
 759                                 'class' => 'NullLockManager',
 760                         ) ),
 761                         'wgLocalFileRepo' => array(
 762                                 'class' => 'LocalRepo',
 763                                 'name' => 'local',
 764                                 'url' => 'http://example.com/images',
 765                                 'hashLevels' => 2,
 766                                 'transformVia404' => false,
 767                                 'backend' => new FSFileBackend( array(
 768                                         'name' => 'local-backend',
 769                                         'wikiId' => wfWikiId(),
 770                                         'containerPaths' => array(
 771                                                 'local-public' => $this->uploadDir,
 772                                                 'local-thumb' => $this->uploadDir . '/thumb',
 773                                                 'local-temp' => $this->uploadDir . '/temp',
 774                                                 'local-deleted' => $this->uploadDir . '/delete',
 775                                         )
 776                                 ) )
 777                         ),
 778                         'wgEnableUploads' => self::getOptionValue( 'wgEnableUploads', $opts, true ),
 779                         'wgStylePath' => '/skins',
 780                         'wgSitename' => 'MediaWiki',
 781                         'wgLanguageCode' => $lang,
 782                         'wgDBprefix' => $this->db->getType() != 'oracle' ? 'parsertest_' : 'pt_',
 783                         'wgRawHtml' => self::getOptionValue( 'wgRawHtml', $opts, false ),
 784                         'wgLang' => null,
 785                         'wgContLang' => null,
 786                         'wgNamespacesWithSubpages' => array( 0 => isset( $opts['subpage'] ) ),
 787                         'wgMaxTocLevel' => $maxtoclevel,
 788                         'wgCapitalLinks' => true,
 789                         'wgNoFollowLinks' => true,
 790                         'wgNoFollowDomainExceptions' => array(),
 791                         'wgThumbnailScriptPath' => false,
 792                         'wgUseImageResize' => true,
 793                         'wgSVGConverter' => 'null',
 794                         'wgSVGConverters' => array( 'null' => 'echo "1">$output' ),
 795                         'wgLocaltimezone' => 'UTC',
 796                         'wgAllowExternalImages' => self::getOptionValue( 'wgAllowExternalImages', $opts, true ),
 797                         'wgThumbLimits' => array( self::getOptionValue( 'thumbsize', $opts, 180 ) ),
 798                         'wgUseTidy' => false,
 799                         'wgDefaultLanguageVariant' => $variant,
 800                         'wgVariantArticlePath' => false,
 801                         'wgGroupPermissions' => array( '*' => array(
 802                                 'createaccount' => true,
 803                                 'read' => true,
 804                                 'edit' => true,
 805                                 'createpage' => true,
 806                                 'createtalk' => true,
 807                         ) ),
 808                         'wgNamespaceProtection' => array( NS_MEDIAWIKI => 'editinterface' ),
 809                         'wgDefaultExternalStore' => array(),
 810                         'wgForeignFileRepos' => array(),
 811                         'wgLinkHolderBatchSize' => $linkHolderBatchSize,
 812                         'wgExperimentalHtmlIds' => false,
 813                         'wgExternalLinkTarget' => false,
 814                         'wgAlwaysUseTidy' => false,
 815                         'wgHtml5' => true,
 816                         'wgWellFormedXml' => true,
 817                         'wgAllowMicrodataAttributes' => true,
 818                         'wgAdaptiveMessageCache' => true,
 819                         'wgDisableLangConversion' => false,
 820                         'wgDisableTitleConversion' => false,
 821                 );
 822
 823                 if ( $config ) {
 824                         $configLines = explode( "\n", $config );
 825
 826                         foreach ( $configLines as $line ) {
 827                                 list( $var, $value ) = explode( '=', $line, 2 );
 828
 829                                 $settings[$var] = eval( "return $value;" );
 830                         }
 831                 }
 832
 833                 $this->savedGlobals = array();
 834
 835                 /** @since 1.20 */
 836                 wfRunHooks( 'ParserTestGlobals', array( &$settings ) );
 837
 838                 foreach ( $settings as $var => $val ) {
 839                         if ( array_key_exists( $var, $GLOBALS ) ) {
 840                                 $this->savedGlobals[$var] = $GLOBALS[$var];
 841                         }
 842
 843                         $GLOBALS[$var] = $val;
 844                 }
 845
 846                 $GLOBALS['wgContLang'] = Language::factory( $lang );
 847                 $GLOBALS['wgMemc'] = new EmptyBagOStuff;
 848
 849                 $context = new RequestContext();
 850                 $GLOBALS['wgLang'] = $context->getLanguage();
 851                 $GLOBALS['wgOut'] = $context->getOutput();
 852                 $GLOBALS['wgUser'] = $context->getUser();
 853
 854                 // We (re)set $wgThumbLimits to a single-element array above.
 855                 $context->getUser()->setOption( 'thumbsize', 0 );
 856
 857                 global $wgHooks;
 858
 859                 $wgHooks['ParserTestParser'][] = 'ParserTestParserHook::setup';
 860                 $wgHooks['ParserGetVariableValueTs'][] = 'ParserTest::getFakeTimestamp';
 861
 862                 MagicWord::clearCache();
 863
 864                 return $context;
 865         }
 866
 867         /**
 868          * List of temporary tables to create, without prefix.
 869          * Some of these probably aren't necessary.
 870          */
 871         private function listTables() {
 872                 $tables = array( 'user', 'user_properties', 'user_former_groups', 'page', 'page_restrictions',
 873                         'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
 874                         'categorylinks', 'templatelinks', 'externallinks', 'langlinks', 'iwlinks',
 875                         'site_stats', 'hitcounter', 'ipblocks', 'image', 'oldimage',
 876                         'recentchanges', 'watchlist', 'interwiki', 'logging',
 877                         'querycache', 'objectcache', 'job', 'l10n_cache', 'redirect', 'querycachetwo',
 878                         'archive', 'user_groups', 'page_props', 'category', 'msg_resource', 'msg_resource_links'
 879                 );
 880
 881                 if ( in_array( $this->db->getType(), array( 'mysql', 'sqlite', 'oracle' ) ) ) {
 882                         array_push( $tables, 'searchindex' );
 883                 }
 884
 885                 // Allow extensions to add to the list of tables to duplicate;
 886                 // may be necessary if they hook into page save or other code
 887                 // which will require them while running tests.
 888                 wfRunHooks( 'ParserTestTables', array( &$tables ) );
 889
 890                 return $tables;
 891         }
 892
 893         /**
 894          * Set up a temporary set of wiki tables to work with for the tests.
 895          * Currently this will only be done once per run, and any changes to
 896          * the db will be visible to later tests in the run.
 897          */
 898         public function setupDatabase() {
 899                 global $wgDBprefix;
 900
 901                 if ( $this->databaseSetupDone ) {
 902                         return;
 903                 }
 904
 905                 $this->db = wfGetDB( DB_MASTER );
 906                 $dbType = $this->db->getType();
 907
 908                 if ( $wgDBprefix === 'parsertest_' || ( $dbType == 'oracle' && $wgDBprefix === 'pt_' ) ) {
 909                         throw new MWException( 'setupDatabase should be called before setupGlobals' );
 910                 }
 911
 912                 $this->databaseSetupDone = true;
 913                 $this->oldTablePrefix = $wgDBprefix;
 914
 915                 # SqlBagOStuff broke when using temporary tables on r40209 (bug 15892).
 916                 # It seems to have been fixed since (r55079?), but regressed at some point before r85701.
 917                 # This works around it for now...
 918                 ObjectCache::$instances[CACHE_DB] = new HashBagOStuff;
 919
 920                 # CREATE TEMPORARY TABLE breaks if there is more than one server
 921                 if ( wfGetLB()->getServerCount() != 1 ) {
 922                         $this->useTemporaryTables = false;
 923                 }
 924
 925                 $temporary = $this->useTemporaryTables || $dbType == 'postgres';
 926                 $prefix = $dbType != 'oracle' ? 'parsertest_' : 'pt_';
 927
 928                 $this->dbClone = new CloneDatabase( $this->db, $this->listTables(), $prefix );
 929                 $this->dbClone->useTemporaryTables( $temporary );
 930                 $this->dbClone->cloneTableStructure();
 931
 932                 if ( $dbType == 'oracle' ) {
 933                         $this->db->query( 'BEGIN FILL_WIKI_INFO; END;' );
 934                         # Insert 0 user to prevent FK violations
 935
 936                         # Anonymous user
 937                         $this->db->insert( 'user', array(
 938                                 'user_id' => 0,
 939                                 'user_name' => 'Anonymous' ) );
 940                 }
 941
 942                 # Update certain things in site_stats
 943                 $this->db->insert( 'site_stats',
 944                         array( 'ss_row_id' => 1, 'ss_images' => 2, 'ss_good_articles' => 1 ) );
 945
 946                 # Reinitialise the LocalisationCache to match the database state
 947                 Language::getLocalisationCache()->unloadAll();
 948
 949                 # Clear the message cache
 950                 MessageCache::singleton()->clear();
 951
 952                 // Remember to update newParserTests.php after changing the below
 953                 // (and it uses a slightly different syntax just for teh lulz)
 954                 $this->uploadDir = $this->setupUploadDir();
 955                 $user = User::createNew( 'WikiSysop' );
 956                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.jpg' ) );
 957                 # note that the size/width/height/bits/etc of the file
 958                 # are actually set by inspecting the file itself; the arguments
 959                 # to recordUpload2 have no effect.  That said, we try to make things
 960                 # match up so it is less confusing to readers of the code & tests.
 961                 $image->recordUpload2( '', 'Upload of some lame file', 'Some lame file', array(
 962                         'size' => 7881,
 963                         'width' => 1941,
 964                         'height' => 220,
 965                         'bits' => 8,
 966                         'media_type' => MEDIATYPE_BITMAP,
 967                         'mime' => 'image/jpeg',
 968                         'metadata' => serialize( array() ),
 969                         'sha1' => wfBaseConvert( '1', 16, 36, 31 ),
 970                         'fileExists' => true
 971                 ), $this->db->timestamp( '20010115123500' ), $user );
 972
 973                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Thumb.png' ) );
 974                 # again, note that size/width/height below are ignored; see above.
 975                 $image->recordUpload2( '', 'Upload of some lame thumbnail', 'Some lame thumbnail', array(
 976                         'size' => 22589,
 977                         'width' => 135,
 978                         'height' => 135,
 979                         'bits' => 8,
 980                         'media_type' => MEDIATYPE_BITMAP,
 981                         'mime' => 'image/png',
 982                         'metadata' => serialize( array() ),
 983                         'sha1' => wfBaseConvert( '2', 16, 36, 31 ),
 984                         'fileExists' => true
 985                 ), $this->db->timestamp( '20130225203040' ), $user );
 986
 987                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.svg' ) );
 988                 $image->recordUpload2( '', 'Upload of some lame SVG', 'Some lame SVG', array(
 989                                 'size'        => 12345,
 990                                 'width'       => 240,
 991                                 'height'      => 180,
 992                                 'bits'        => 24,
 993                                 'media_type'  => MEDIATYPE_DRAWING,
 994                                 'mime'        => 'image/svg+xml',
 995                                 'metadata'    => serialize( array() ),
 996                                 'sha1'        => wfBaseConvert( '', 16, 36, 31 ),
 997                                 'fileExists'  => true
 998                 ), $this->db->timestamp( '20010115123500' ), $user );
 999
1000                 # This image will be blacklisted in [[MediaWiki:Bad image list]]
1001                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Bad.jpg' ) );
1002                 $image->recordUpload2( '', 'zomgnotcensored', 'Borderline image', array(
1003                         'size' => 12345,
1004                         'width' => 320,
1005                         'height' => 240,
1006                         'bits' => 24,
1007                         'media_type' => MEDIATYPE_BITMAP,
1008                         'mime' => 'image/jpeg',
1009                         'metadata' => serialize( array() ),
1010                         'sha1' => wfBaseConvert( '3', 16, 36, 31 ),
1011                         'fileExists' => true
1012                 ), $this->db->timestamp( '20010115123500' ), $user );
1013         }
1014
1015         public function teardownDatabase() {
1016                 if ( !$this->databaseSetupDone ) {
1017                         $this->teardownGlobals();
1018                         return;
1019                 }
1020                 $this->teardownUploadDir( $this->uploadDir );
1021
1022                 $this->dbClone->destroy();
1023                 $this->databaseSetupDone = false;
1024
1025                 if ( $this->useTemporaryTables ) {
1026                         if ( $this->db->getType() == 'sqlite' ) {
1027                                 # Under SQLite the searchindex table is virtual and need
1028                                 # to be explicitly destroyed. See bug 29912
1029                                 # See also MediaWikiTestCase::destroyDB()
1030                                 wfDebug( __METHOD__ . " explicitly destroying sqlite virtual table parsertest_searchindex\n" );
1031                                 $this->db->query( "DROP TABLE `parsertest_searchindex`" );
1032                         }
1033                         # Don't need to do anything
1034                         $this->teardownGlobals();
1035                         return;
1036                 }
1037
1038                 $tables = $this->listTables();
1039
1040                 foreach ( $tables as $table ) {
1041                         if ( $this->db->getType() == 'oracle' ) {
1042                                 $this->db->query( "DROP TABLE pt_$table DROP CONSTRAINTS" );
1043                         } else {
1044                                 $this->db->query( "DROP TABLE `parsertest_$table`" );
1045                         }
1046                 }
1047
1048                 if ( $this->db->getType() == 'oracle' ) {
1049                         $this->db->query( 'BEGIN FILL_WIKI_INFO; END;' );
1050                 }
1051
1052                 $this->teardownGlobals();
1053         }
1054
1055         /**
1056          * Create a dummy uploads directory which will contain a couple
1057          * of files in order to pass existence tests.
1058          *
1059          * @return string The directory
1060          */
1061         private function setupUploadDir() {
1062                 global $IP;
1063
1064                 if ( $this->keepUploads ) {
1065                         $dir = wfTempDir() . '/mwParser-images';
1066
1067                         if ( is_dir( $dir ) ) {
1068                                 return $dir;
1069                         }
1070                 } else {
1071                         $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
1072                 }
1073
1074                 // wfDebug( "Creating upload directory $dir\n" );
1075                 if ( file_exists( $dir ) ) {
1076                         wfDebug( "Already exists!\n" );
1077                         return $dir;
1078                 }
1079
1080                 wfMkdirParents( $dir . '/3/3a', null, __METHOD__ );
1081                 copy( "$IP/skins/monobook/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
1082                 wfMkdirParents( $dir . '/e/ea', null, __METHOD__ );
1083                 copy( "$IP/skins/monobook/wiki.png", "$dir/e/ea/Thumb.png" );
1084                 wfMkdirParents( $dir . '/0/09', null, __METHOD__ );
1085                 copy( "$IP/skins/monobook/headbg.jpg", "$dir/0/09/Bad.jpg" );
1086                 wfMkdirParents( $dir . '/f/ff', null, __METHOD__ );
1087                 file_put_contents( "$dir/f/ff/Foobar.svg",
1088                         '<?xml version="1.0" encoding="utf-8"?>' .
1089                         '<svg xmlns="http://www.w3.org/2000/svg"' .
1090                         ' version="1.1" width="240" height="180"/>' );
1091                 return $dir;
1092         }
1093
1094         /**
1095          * Restore default values and perform any necessary clean-up
1096          * after each test runs.
1097          */
1098         private function teardownGlobals() {
1099                 RepoGroup::destroySingleton();
1100                 FileBackendGroup::destroySingleton();
1101                 LockManagerGroup::destroySingletons();
1102                 LinkCache::singleton()->clear();
1103
1104                 foreach ( $this->savedGlobals as $var => $val ) {
1105                         $GLOBALS[$var] = $val;
1106                 }
1107         }
1108
1109         /**
1110          * Remove the dummy uploads directory
1111          * @param string $dir
1112          */
1113         private function teardownUploadDir( $dir ) {
1114                 if ( $this->keepUploads ) {
1115                         return;
1116                 }
1117
1118                 // delete the files first, then the dirs.
1119                 self::deleteFiles(
1120                         array(
1121                                 "$dir/3/3a/Foobar.jpg",
1122                                 "$dir/thumb/3/3a/Foobar.jpg/1000px-Foobar.jpg",
1123                                 "$dir/thumb/3/3a/Foobar.jpg/100px-Foobar.jpg",
1124                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
1125                                 "$dir/thumb/3/3a/Foobar.jpg/1280px-Foobar.jpg",
1126                                 "$dir/thumb/3/3a/Foobar.jpg/137px-Foobar.jpg",
1127                                 "$dir/thumb/3/3a/Foobar.jpg/1500px-Foobar.jpg",
1128                                 "$dir/thumb/3/3a/Foobar.jpg/177px-Foobar.jpg",
1129                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
1130                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
1131                                 "$dir/thumb/3/3a/Foobar.jpg/206px-Foobar.jpg",
1132                                 "$dir/thumb/3/3a/Foobar.jpg/20px-Foobar.jpg",
1133                                 "$dir/thumb/3/3a/Foobar.jpg/220px-Foobar.jpg",
1134                                 "$dir/thumb/3/3a/Foobar.jpg/265px-Foobar.jpg",
1135                                 "$dir/thumb/3/3a/Foobar.jpg/270px-Foobar.jpg",
1136                                 "$dir/thumb/3/3a/Foobar.jpg/274px-Foobar.jpg",
1137                                 "$dir/thumb/3/3a/Foobar.jpg/300px-Foobar.jpg",
1138                                 "$dir/thumb/3/3a/Foobar.jpg/30px-Foobar.jpg",
1139                                 "$dir/thumb/3/3a/Foobar.jpg/330px-Foobar.jpg",
1140                                 "$dir/thumb/3/3a/Foobar.jpg/353px-Foobar.jpg",
1141                                 "$dir/thumb/3/3a/Foobar.jpg/360px-Foobar.jpg",
1142                                 "$dir/thumb/3/3a/Foobar.jpg/400px-Foobar.jpg",
1143                                 "$dir/thumb/3/3a/Foobar.jpg/40px-Foobar.jpg",
1144                                 "$dir/thumb/3/3a/Foobar.jpg/440px-Foobar.jpg",
1145                                 "$dir/thumb/3/3a/Foobar.jpg/442px-Foobar.jpg",
1146                                 "$dir/thumb/3/3a/Foobar.jpg/450px-Foobar.jpg",
1147                                 "$dir/thumb/3/3a/Foobar.jpg/50px-Foobar.jpg",
1148                                 "$dir/thumb/3/3a/Foobar.jpg/600px-Foobar.jpg",
1149                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
1150                                 "$dir/thumb/3/3a/Foobar.jpg/70px-Foobar.jpg",
1151                                 "$dir/thumb/3/3a/Foobar.jpg/75px-Foobar.jpg",
1152                                 "$dir/thumb/3/3a/Foobar.jpg/960px-Foobar.jpg",
1153
1154                                 "$dir/e/ea/Thumb.png",
1155
1156                                 "$dir/0/09/Bad.jpg",
1157
1158                                 "$dir/f/ff/Foobar.svg",
1159                                 "$dir/thumb/f/ff/Foobar.svg/180px-Foobar.svg.png",
1160                                 "$dir/thumb/f/ff/Foobar.svg/2000px-Foobar.svg.png",
1161                                 "$dir/thumb/f/ff/Foobar.svg/270px-Foobar.svg.png",
1162                                 "$dir/thumb/f/ff/Foobar.svg/3000px-Foobar.svg.png",
1163                                 "$dir/thumb/f/ff/Foobar.svg/360px-Foobar.svg.png",
1164                                 "$dir/thumb/f/ff/Foobar.svg/4000px-Foobar.svg.png",
1165                                 "$dir/thumb/f/ff/Foobar.svg/langde-180px-Foobar.svg.png",
1166                                 "$dir/thumb/f/ff/Foobar.svg/langde-270px-Foobar.svg.png",
1167                                 "$dir/thumb/f/ff/Foobar.svg/langde-360px-Foobar.svg.png",
1168
1169                                 "$dir/math/f/a/5/fa50b8b616463173474302ca3e63586b.png",
1170                         )
1171                 );
1172
1173                 self::deleteDirs(
1174                         array(
1175                                 "$dir/3/3a",
1176                                 "$dir/3",
1177                                 "$dir/thumb/3/3a/Foobar.jpg",
1178                                 "$dir/thumb/3/3a",
1179                                 "$dir/thumb/3",
1180                                 "$dir/e/ea",
1181                                 "$dir/e",
1182                                 "$dir/f/ff/",
1183                                 "$dir/f/",
1184                                 "$dir/thumb/f/ff/Foobar.svg",
1185                                 "$dir/thumb/f/ff/",
1186                                 "$dir/thumb/f/",
1187                                 "$dir/0/09/",
1188                                 "$dir/0/",
1189                                 "$dir/thumb",
1190                                 "$dir/math/f/a/5",
1191                                 "$dir/math/f/a",
1192                                 "$dir/math/f",
1193                                 "$dir/math",
1194                                 "$dir",
1195                         )
1196                 );
1197         }
1198
1199         /**
1200          * Delete the specified files, if they exist.
1201          * @param array $files Full paths to files to delete.
1202          */
1203         private static function deleteFiles( $files ) {
1204                 foreach ( $files as $file ) {
1205                         if ( file_exists( $file ) ) {
1206                                 unlink( $file );
1207                         }
1208                 }
1209         }
1210
1211         /**
1212          * Delete the specified directories, if they exist. Must be empty.
1213          * @param array $dirs Full paths to directories to delete.
1214          */
1215         private static function deleteDirs( $dirs ) {
1216                 foreach ( $dirs as $dir ) {
1217                         if ( is_dir( $dir ) ) {
1218                                 rmdir( $dir );
1219                         }
1220                 }
1221         }
1222
1223         /**
1224          * "Running test $desc..."
1225          * @param string $desc
1226          */
1227         protected function showTesting( $desc ) {
1228                 print "Running test $desc... ";
1229         }
1230
1231         /**
1232          * Print a happy success message.
1233          *
1234          * Refactored in 1.22 to use ParserTestResult
1235          *
1236          * @param ParserTestResult $testResult
1237          * @return bool
1238          */
1239         protected function showSuccess( ParserTestResult $testResult ) {
1240                 if ( $this->showProgress ) {
1241                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
1242                 }
1243
1244                 return true;
1245         }
1246
1247         /**
1248          * Print a failure message and provide some explanatory output
1249          * about what went wrong if so configured.
1250          *
1251          * Refactored in 1.22 to use ParserTestResult
1252          *
1253          * @param ParserTestResult $testResult
1254          * @return bool
1255          */
1256         protected function showFailure( ParserTestResult $testResult ) {
1257                 if ( $this->showFailure ) {
1258                         if ( !$this->showProgress ) {
1259                                 # In quiet mode we didn't show the 'Testing' message before the
1260                                 # test, in case it succeeded. Show it now:
1261                                 $this->showTesting( $testResult->description );
1262                         }
1263
1264                         print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
1265
1266                         if ( $this->showOutput ) {
1267                                 print "--- Expected ---\n{$testResult->expected}\n";
1268                                 print "--- Actual ---\n{$testResult->actual}\n";
1269                         }
1270
1271                         if ( $this->showDiffs ) {
1272                                 print $this->quickDiff( $testResult->expected, $testResult->actual );
1273                                 if ( !$this->wellFormed( $testResult->actual ) ) {
1274                                         print "XML error: $this->mXmlError\n";
1275                                 }
1276                         }
1277                 }
1278
1279                 return false;
1280         }
1281
1282         /**
1283          * Run given strings through a diff and return the (colorized) output.
1284          * Requires writable /tmp directory and a 'diff' command in the PATH.
1285          *
1286          * @param string $input
1287          * @param string $output
1288          * @param string $inFileTail Tailing for the input file name
1289          * @param string $outFileTail Tailing for the output file name
1290          * @return string
1291          */
1292         protected function quickDiff( $input, $output,
1293                 $inFileTail = 'expected', $outFileTail = 'actual'
1294         ) {
1295                 # Windows, or at least the fc utility, is retarded
1296                 $slash = wfIsWindows() ? '\\' : '/';
1297                 $prefix = wfTempDir() . "{$slash}mwParser-" . mt_rand();
1298
1299                 $infile = "$prefix-$inFileTail";
1300                 $this->dumpToFile( $input, $infile );
1301
1302                 $outfile = "$prefix-$outFileTail";
1303                 $this->dumpToFile( $output, $outfile );
1304
1305                 $shellInfile = wfEscapeShellArg( $infile );
1306                 $shellOutfile = wfEscapeShellArg( $outfile );
1307
1308                 global $wgDiff3;
1309                 // we assume that people with diff3 also have usual diff
1310                 $shellCommand = ( wfIsWindows() && !$wgDiff3 ) ? 'fc' : 'diff -au';
1311
1312                 $diff = wfShellExec( "$shellCommand $shellInfile $shellOutfile" );
1313
1314                 unlink( $infile );
1315                 unlink( $outfile );
1316
1317                 return $this->colorDiff( $diff );
1318         }
1319
1320         /**
1321          * Write the given string to a file, adding a final newline.
1322          *
1323          * @param string $data
1324          * @param string $filename
1325          */
1326         private function dumpToFile( $data, $filename ) {
1327                 $file = fopen( $filename, "wt" );
1328                 fwrite( $file, $data . "\n" );
1329                 fclose( $file );
1330         }
1331
1332         /**
1333          * Colorize unified diff output if set for ANSI color output.
1334          * Subtractions are colored blue, additions red.
1335          *
1336          * @param string $text
1337          * @return string
1338          */
1339         protected function colorDiff( $text ) {
1340                 return preg_replace(
1341                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
1342                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
1343                                 $this->term->color( 31 ) . '$1' . $this->term->reset() ),
1344                         $text );
1345         }
1346
1347         /**
1348          * Show "Reading tests from ..."
1349          *
1350          * @param string $path
1351          */
1352         public function showRunFile( $path ) {
1353                 print $this->term->color( 1 ) .
1354                         "Reading tests from \"$path\"..." .
1355                         $this->term->reset() .
1356                         "\n";
1357         }
1358
1359         /**
1360          * Insert a temporary test article
1361          * @param string $name The title, including any prefix
1362          * @param string $text The article text
1363          * @param int $line The input line number, for reporting errors
1364          * @param bool $ignoreDuplicate Whether to silently ignore duplicate pages
1365          */
1366         public static function addArticle( $name, $text, $line = 'unknown', $ignoreDuplicate = '' ) {
1367                 global $wgCapitalLinks;
1368
1369                 $oldCapitalLinks = $wgCapitalLinks;
1370                 $wgCapitalLinks = true; // We only need this from SetupGlobals() See r70917#c8637
1371
1372                 $text = self::chomp( $text );
1373                 $name = self::chomp( $name );
1374
1375                 $title = Title::newFromText( $name );
1376
1377                 if ( is_null( $title ) ) {
1378                         throw new MWException( "invalid title '$name' at line $line\n" );
1379                 }
1380
1381                 $page = WikiPage::factory( $title );
1382                 $page->loadPageData( 'fromdbmaster' );
1383
1384                 if ( $page->exists() ) {
1385                         if ( $ignoreDuplicate == 'ignoreduplicate' ) {
1386                                 return;
1387                         } else {
1388                                 throw new MWException( "duplicate article '$name' at line $line\n" );
1389                         }
1390                 }
1391
1392                 $page->doEditContent( ContentHandler::makeContent( $text, $title ), '', EDIT_NEW );
1393
1394                 $wgCapitalLinks = $oldCapitalLinks;
1395         }
1396
1397         /**
1398          * Steal a callback function from the primary parser, save it for
1399          * application to our scary parser. If the hook is not installed,
1400          * abort processing of this file.
1401          *
1402          * @param string $name
1403          * @return bool True if tag hook is present
1404          */
1405         public function requireHook( $name ) {
1406                 global $wgParser;
1407
1408                 $wgParser->firstCallInit(); // make sure hooks are loaded.
1409
1410                 if ( isset( $wgParser->mTagHooks[$name] ) ) {
1411                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
1412                 } else {
1413                         echo "   This test suite requires the '$name' hook extension, skipping.\n";
1414                         return false;
1415                 }
1416
1417                 return true;
1418         }
1419
1420         /**
1421          * Steal a callback function from the primary parser, save it for
1422          * application to our scary parser. If the hook is not installed,
1423          * abort processing of this file.
1424          *
1425          * @param string $name
1426          * @return bool True if function hook is present
1427          */
1428         public function requireFunctionHook( $name ) {
1429                 global $wgParser;
1430
1431                 $wgParser->firstCallInit(); // make sure hooks are loaded.
1432
1433                 if ( isset( $wgParser->mFunctionHooks[$name] ) ) {
1434                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
1435                 } else {
1436                         echo "   This test suite requires the '$name' function hook extension, skipping.\n";
1437                         return false;
1438                 }
1439
1440                 return true;
1441         }
1442
1443         /**
1444          * Run the "tidy" command on text if the $wgUseTidy
1445          * global is true
1446          *
1447          * @param string $text The text to tidy
1448          * @return string
1449          */
1450         private function tidy( $text ) {
1451                 global $wgUseTidy;
1452
1453                 if ( $wgUseTidy ) {
1454                         $text = MWTidy::tidy( $text );
1455                 }
1456
1457                 return $text;
1458         }
1459
1460         private function wellFormed( $text ) {
1461                 $html =
1462                         Sanitizer::hackDocType() .
1463                                 '<html>' .
1464                                 $text .
1465                                 '</html>';
1466
1467                 $parser = xml_parser_create( "UTF-8" );
1468
1469                 # case folding violates XML standard, turn it off
1470                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
1471
1472                 if ( !xml_parse( $parser, $html, true ) ) {
1473                         $err = xml_error_string( xml_get_error_code( $parser ) );
1474                         $position = xml_get_current_byte_index( $parser );
1475                         $fragment = $this->extractFragment( $html, $position );
1476                         $this->mXmlError = "$err at byte $position:\n$fragment";
1477                         xml_parser_free( $parser );
1478
1479                         return false;
1480                 }
1481
1482                 xml_parser_free( $parser );
1483
1484                 return true;
1485         }
1486
1487         private function extractFragment( $text, $position ) {
1488                 $start = max( 0, $position - 10 );
1489                 $before = $position - $start;
1490                 $fragment = '...' .
1491                         $this->term->color( 34 ) .
1492                         substr( $text, $start, $before ) .
1493                         $this->term->color( 0 ) .
1494                         $this->term->color( 31 ) .
1495                         $this->term->color( 1 ) .
1496                         substr( $text, $position, 1 ) .
1497                         $this->term->color( 0 ) .
1498                         $this->term->color( 34 ) .
1499                         substr( $text, $position + 1, 9 ) .
1500                         $this->term->color( 0 ) .
1501                         '...';
1502                 $display = str_replace( "\n", ' ', $fragment );
1503                 $caret = '   ' .
1504                         str_repeat( ' ', $before ) .
1505                         $this->term->color( 31 ) .
1506                         '^' .
1507                         $this->term->color( 0 );
1508
1509                 return "$display\n$caret";
1510         }
1511
1512         static function getFakeTimestamp( &$parser, &$ts ) {
1513                 $ts = 123; //parsed as '1970-01-01T00:02:03Z'
1514                 return true;
1515         }
1516 }