Moved FileBackend tests to /filebackend.
authorAaron Schulz <aschulz@wikimedia.org>
Fri, 2 Nov 2012 19:12:02 +0000 (12:12 -0700)
committerAaron Schulz <aschulz@wikimedia.org>
Fri, 2 Nov 2012 19:12:36 +0000 (12:12 -0700)
Change-Id: Ieb789ac1c9803f74bad3a4fef3a57587d6dd6260

tests/phpunit/includes/filebackend/FileBackendTest.php [new file with mode: 0644]
tests/phpunit/includes/filerepo/FileBackendTest.php [deleted file]

diff --git a/tests/phpunit/includes/filebackend/FileBackendTest.php b/tests/phpunit/includes/filebackend/FileBackendTest.php
new file mode 100644 (file)
index 0000000..da36e90
--- /dev/null
@@ -0,0 +1,1995 @@
+<?php
+
+/**
+ * @group FileRepo
+ * @group FileBackend
+ * @group medium
+ */
+class FileBackendTest extends MediaWikiTestCase {
+       private $backend, $multiBackend;
+       private $filesToPrune = array();
+       private static $backendToUse;
+
+       protected function setUp() {
+               global $wgFileBackends;
+               parent::setUp();
+               $tmpPrefix = wfTempDir() . '/filebackend-unittest-' . time() . '-' . mt_rand();
+               if ( $this->getCliArg( 'use-filebackend=' ) ) {
+                       if ( self::$backendToUse ) {
+                               $this->singleBackend = self::$backendToUse;
+                       } else {
+                               $name = $this->getCliArg( 'use-filebackend=' );
+                               $useConfig = array();
+                               foreach ( $wgFileBackends as $conf ) {
+                                       if ( $conf['name'] == $name ) {
+                                               $useConfig = $conf;
+                                               break;
+                                       }
+                               }
+                               $useConfig['name'] = 'localtesting'; // swap name
+                               $useConfig['shardViaHashLevels'] = array( // test sharding
+                                       'unittest-cont1' => array( 'levels' => 1, 'base' => 16, 'repeat' => 1 )
+                               );
+                               $class = $useConfig['class'];
+                               self::$backendToUse = new $class( $useConfig );
+                               $this->singleBackend = self::$backendToUse;
+                       }
+               } else {
+                       $this->singleBackend = new FSFileBackend( array(
+                               'name'        => 'localtesting',
+                               'lockManager' => 'fsLockManager',
+                               #'parallelize' => 'implicit',
+                               'containerPaths' => array(
+                                       'unittest-cont1' => "{$tmpPrefix}-localtesting-cont1",
+                                       'unittest-cont2' => "{$tmpPrefix}-localtesting-cont2" )
+                       ) );
+               }
+               $this->multiBackend = new FileBackendMultiWrite( array(
+                       'name'        => 'localtesting',
+                       'lockManager' => 'fsLockManager',
+                       'parallelize' => 'implicit',
+                       'backends'    => array(
+                               array(
+                                       'name'          => 'localmultitesting1',
+                                       'class'         => 'FSFileBackend',
+                                       'lockManager'   => 'nullLockManager',
+                                       'containerPaths' => array(
+                                               'unittest-cont1' => "{$tmpPrefix}-localtestingmulti1-cont1",
+                                               'unittest-cont2' => "{$tmpPrefix}-localtestingmulti1-cont2" ),
+                                       'isMultiMaster' => false
+                               ),
+                               array(
+                                       'name'          => 'localmultitesting2',
+                                       'class'         => 'FSFileBackend',
+                                       'lockManager'   => 'nullLockManager',
+                                       'containerPaths' => array(
+                                               'unittest-cont1' => "{$tmpPrefix}-localtestingmulti2-cont1",
+                                               'unittest-cont2' => "{$tmpPrefix}-localtestingmulti2-cont2" ),
+                                       'isMultiMaster' => true
+                               )
+                       )
+               ) );
+               $this->filesToPrune = array();
+       }
+
+       private static function baseStorePath() {
+               return 'mwstore://localtesting';
+       }
+
+       private function backendClass() {
+               return get_class( $this->backend );
+       }
+
+       /**
+        * @dataProvider provider_testIsStoragePath
+        */
+       public function testIsStoragePath( $path, $isStorePath ) {
+               $this->assertEquals( $isStorePath, FileBackend::isStoragePath( $path ),
+                       "FileBackend::isStoragePath on path '$path'" );
+       }
+
+       function provider_testIsStoragePath() {
+               return array(
+                       array( 'mwstore://', true ),
+                       array( 'mwstore://backend', true ),
+                       array( 'mwstore://backend/container', true ),
+                       array( 'mwstore://backend/container/', true ),
+                       array( 'mwstore://backend/container/path', true ),
+                       array( 'mwstore://backend//container/', true ),
+                       array( 'mwstore://backend//container//', true ),
+                       array( 'mwstore://backend//container//path', true ),
+                       array( 'mwstore:///', true ),
+                       array( 'mwstore:/', false ),
+                       array( 'mwstore:', false ),
+               );
+       }
+
+       /**
+        * @dataProvider provider_testSplitStoragePath
+        */
+       public function testSplitStoragePath( $path, $res ) {
+               $this->assertEquals( $res, FileBackend::splitStoragePath( $path ),
+                       "FileBackend::splitStoragePath on path '$path'" );
+       }
+
+       function provider_testSplitStoragePath() {
+               return array(
+                       array( 'mwstore://backend/container', array( 'backend', 'container', '' ) ),
+                       array( 'mwstore://backend/container/', array( 'backend', 'container', '' ) ),
+                       array( 'mwstore://backend/container/path', array( 'backend', 'container', 'path' ) ),
+                       array( 'mwstore://backend/container//path', array( 'backend', 'container', '/path' ) ),
+                       array( 'mwstore://backend//container/path', array( null, null, null ) ),
+                       array( 'mwstore://backend//container//path', array( null, null, null ) ),
+                       array( 'mwstore://', array( null, null, null ) ),
+                       array( 'mwstore://backend', array( null, null, null ) ),
+                       array( 'mwstore:///', array( null, null, null ) ),
+                       array( 'mwstore:/', array( null, null, null ) ),
+                       array( 'mwstore:', array( null, null, null ) )
+               );
+       }
+
+       /**
+        * @dataProvider provider_normalizeStoragePath
+        */
+       public function testNormalizeStoragePath( $path, $res ) {
+               $this->assertEquals( $res, FileBackend::normalizeStoragePath( $path ),
+                       "FileBackend::normalizeStoragePath on path '$path'" );
+       }
+
+       function provider_normalizeStoragePath() {
+               return array(
+                       array( 'mwstore://backend/container', 'mwstore://backend/container' ),
+                       array( 'mwstore://backend/container/', 'mwstore://backend/container' ),
+                       array( 'mwstore://backend/container/path', 'mwstore://backend/container/path' ),
+                       array( 'mwstore://backend/container//path', 'mwstore://backend/container/path' ),
+                       array( 'mwstore://backend/container///path', 'mwstore://backend/container/path' ),
+                       array( 'mwstore://backend/container///path//to///obj', 'mwstore://backend/container/path/to/obj',
+                       array( 'mwstore://', null ),
+                       array( 'mwstore://backend', null ),
+                       array( 'mwstore://backend//container/path', null ),
+                       array( 'mwstore://backend//container//path', null ),
+                       array( 'mwstore:///', null ),
+                       array( 'mwstore:/', null ),
+                       array( 'mwstore:', null ), )
+               );
+       }
+
+       /**
+        * @dataProvider provider_testParentStoragePath
+        */
+       public function testParentStoragePath( $path, $res ) {
+               $this->assertEquals( $res, FileBackend::parentStoragePath( $path ),
+                       "FileBackend::parentStoragePath on path '$path'" );
+       }
+
+       function provider_testParentStoragePath() {
+               return array(
+                       array( 'mwstore://backend/container/path/to/obj', 'mwstore://backend/container/path/to' ),
+                       array( 'mwstore://backend/container/path/to', 'mwstore://backend/container/path' ),
+                       array( 'mwstore://backend/container/path', 'mwstore://backend/container' ),
+                       array( 'mwstore://backend/container', null ),
+                       array( 'mwstore://backend/container/path/to/obj/', 'mwstore://backend/container/path/to' ),
+                       array( 'mwstore://backend/container/path/to/', 'mwstore://backend/container/path' ),
+                       array( 'mwstore://backend/container/path/', 'mwstore://backend/container' ),
+                       array( 'mwstore://backend/container/', null ),
+               );
+       }
+
+       /**
+        * @dataProvider provider_testExtensionFromPath
+        */
+       public function testExtensionFromPath( $path, $res ) {
+               $this->assertEquals( $res, FileBackend::extensionFromPath( $path ),
+                       "FileBackend::extensionFromPath on path '$path'" );
+       }
+
+       public static function provider_testExtensionFromPath() {
+               return array(
+                       array( 'mwstore://backend/container/path.txt', 'txt' ),
+                       array( 'mwstore://backend/container/path.svg.png', 'png' ),
+                       array( 'mwstore://backend/container/path', '' ),
+                       array( 'mwstore://backend/container/path.', '' ),
+               );
+       }
+
+       /**
+        * @dataProvider provider_testStore
+        */
+       public function testStore( $op ) {
+               $this->filesToPrune[] = $op['src'];
+
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestStore( $op );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestStore( $op );
+               $this->filesToPrune[] = $op['src']; # avoid file leaking
+               $this->tearDownFiles();
+       }
+
+       private function doTestStore( $op ) {
+               $backendName = $this->backendClass();
+
+               $source = $op['src'];
+               $dest = $op['dst'];
+               $this->prepare( array( 'dir' => dirname( $dest ) ) );
+
+               file_put_contents( $source, "Unit test file" );
+
+               if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
+                       $this->backend->store( $op );
+               }
+
+               $status = $this->backend->doOperation( $op );
+
+               $this->assertGoodStatus( $status,
+                       "Store from $source to $dest succeeded without warnings ($backendName)." );
+               $this->assertEquals( true, $status->isOK(),
+                       "Store from $source to $dest succeeded ($backendName)." );
+               $this->assertEquals( array( 0 => true ), $status->success,
+                       "Store from $source to $dest has proper 'success' field in Status ($backendName)." );
+               $this->assertEquals( true, file_exists( $source ),
+                       "Source file $source still exists ($backendName)." );
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
+                       "Destination file $dest exists ($backendName)." );
+
+               $this->assertEquals( filesize( $source ),
+                       $this->backend->getFileSize( array( 'src' => $dest ) ),
+                       "Destination file $dest has correct size ($backendName)." );
+
+               $props1 = FSFile::getPropsFromPath( $source );
+               $props2 = $this->backend->getFileProps( array( 'src' => $dest ) );
+               $this->assertEquals( $props1, $props2,
+                       "Source and destination have the same props ($backendName)." );
+
+               $this->assertBackendPathsConsistent( array( $dest ) );
+       }
+
+       public static function provider_testStore() {
+               $cases = array();
+
+               $tmpName = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               $toPath = self::baseStorePath() . '/unittest-cont1/e/fun/obj1.txt';
+               $op = array( 'op' => 'store', 'src' => $tmpName, 'dst' => $toPath );
+               $cases[] = array(
+                       $op, // operation
+                       $tmpName, // source
+                       $toPath, // dest
+               );
+
+               $op2 = $op;
+               $op2['overwrite'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $tmpName, // source
+                       $toPath, // dest
+               );
+
+               $op2 = $op;
+               $op2['overwriteSame'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $tmpName, // source
+                       $toPath, // dest
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testCopy
+        */
+       public function testCopy( $op ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestCopy( $op );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestCopy( $op );
+               $this->tearDownFiles();
+       }
+
+       private function doTestCopy( $op ) {
+               $backendName = $this->backendClass();
+
+               $source = $op['src'];
+               $dest = $op['dst'];
+               $this->prepare( array( 'dir' => dirname( $source ) ) );
+               $this->prepare( array( 'dir' => dirname( $dest ) ) );
+
+               if ( isset( $op['ignoreMissingSource'] ) ) {
+                       $status = $this->backend->doOperation( $op );
+                       $this->assertGoodStatus( $status,
+                               "Move from $source to $dest succeeded without warnings ($backendName)." );
+                       $this->assertEquals( array( 0 => true ), $status->success,
+                               "Move from $source to $dest has proper 'success' field in Status ($backendName)." );
+                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
+                               "Source file $source does not exist ($backendName)." );
+                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $dest ) ),
+                               "Destination file $dest does not exist ($backendName)." );
+                       return; // done
+               }
+
+               $status = $this->backend->doOperation(
+                       array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
+               $this->assertGoodStatus( $status,
+                       "Creation of file at $source succeeded ($backendName)." );
+
+               if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
+                       $this->backend->copy( $op );
+               }
+
+               $status = $this->backend->doOperation( $op );
+
+               $this->assertGoodStatus( $status,
+                       "Copy from $source to $dest succeeded without warnings ($backendName)." );
+               $this->assertEquals( true, $status->isOK(),
+                       "Copy from $source to $dest succeeded ($backendName)." );
+               $this->assertEquals( array( 0 => true ), $status->success,
+                       "Copy from $source to $dest has proper 'success' field in Status ($backendName)." );
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $source ) ),
+                       "Source file $source still exists ($backendName)." );
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
+                       "Destination file $dest exists after copy ($backendName)." );
+
+               $this->assertEquals(
+                       $this->backend->getFileSize( array( 'src' => $source ) ),
+                       $this->backend->getFileSize( array( 'src' => $dest ) ),
+                       "Destination file $dest has correct size ($backendName)." );
+
+               $props1 = $this->backend->getFileProps( array( 'src' => $source ) );
+               $props2 = $this->backend->getFileProps( array( 'src' => $dest ) );
+               $this->assertEquals( $props1, $props2,
+                       "Source and destination have the same props ($backendName)." );
+
+               $this->assertBackendPathsConsistent( array( $source, $dest ) );
+       }
+
+       public static function provider_testCopy() {
+               $cases = array();
+
+               $source = self::baseStorePath() . '/unittest-cont1/e/file.txt';
+               $dest = self::baseStorePath() . '/unittest-cont2/a/fileMoved.txt';
+
+               $op = array( 'op' => 'copy', 'src' => $source, 'dst' => $dest );
+               $cases[] = array(
+                       $op, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               $op2 = $op;
+               $op2['overwrite'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               $op2 = $op;
+               $op2['overwriteSame'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               $op2 = $op;
+               $op2['ignoreMissingSource'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testMove
+        */
+       public function testMove( $op ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestMove( $op );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestMove( $op );
+               $this->tearDownFiles();
+       }
+
+       private function doTestMove( $op ) {
+               $backendName = $this->backendClass();
+
+               $source = $op['src'];
+               $dest = $op['dst'];
+               $this->prepare( array( 'dir' => dirname( $source ) ) );
+               $this->prepare( array( 'dir' => dirname( $dest ) ) );
+
+               if ( isset( $op['ignoreMissingSource'] ) ) {
+                       $status = $this->backend->doOperation( $op );
+                       $this->assertGoodStatus( $status,
+                               "Move from $source to $dest succeeded without warnings ($backendName)." );
+                       $this->assertEquals( array( 0 => true ), $status->success,
+                               "Move from $source to $dest has proper 'success' field in Status ($backendName)." );
+                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
+                               "Source file $source does not exist ($backendName)." );
+                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $dest ) ),
+                               "Destination file $dest does not exist ($backendName)." );
+                       return; // done
+               }
+
+               $status = $this->backend->doOperation(
+                       array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
+               $this->assertGoodStatus( $status,
+                       "Creation of file at $source succeeded ($backendName)." );
+
+               if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
+                       $this->backend->copy( $op );
+               }
+
+               $status = $this->backend->doOperation( $op );
+               $this->assertGoodStatus( $status,
+                       "Move from $source to $dest succeeded without warnings ($backendName)." );
+               $this->assertEquals( true, $status->isOK(),
+                       "Move from $source to $dest succeeded ($backendName)." );
+               $this->assertEquals( array( 0 => true ), $status->success,
+                       "Move from $source to $dest has proper 'success' field in Status ($backendName)." );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
+                       "Source file $source does not still exists ($backendName)." );
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
+                       "Destination file $dest exists after move ($backendName)." );
+
+               $this->assertNotEquals(
+                       $this->backend->getFileSize( array( 'src' => $source ) ),
+                       $this->backend->getFileSize( array( 'src' => $dest ) ),
+                       "Destination file $dest has correct size ($backendName)." );
+
+               $props1 = $this->backend->getFileProps( array( 'src' => $source ) );
+               $props2 = $this->backend->getFileProps( array( 'src' => $dest ) );
+               $this->assertEquals( false, $props1['fileExists'],
+                       "Source file does not exist accourding to props ($backendName)." );
+               $this->assertEquals( true, $props2['fileExists'],
+                       "Destination file exists accourding to props ($backendName)." );
+
+               $this->assertBackendPathsConsistent( array( $source, $dest ) );
+       }
+
+       public static function provider_testMove() {
+               $cases = array();
+
+               $source = self::baseStorePath() . '/unittest-cont1/e/file.txt';
+               $dest = self::baseStorePath() . '/unittest-cont2/a/fileMoved.txt';
+
+               $op = array( 'op' => 'move', 'src' => $source, 'dst' => $dest );
+               $cases[] = array(
+                       $op, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               $op2 = $op;
+               $op2['overwrite'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               $op2 = $op;
+               $op2['overwriteSame'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               $op2 = $op;
+               $op2['ignoreMissingSource'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       $source, // source
+                       $dest, // dest
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testDelete
+        */
+       public function testDelete( $op, $withSource, $okStatus ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestDelete( $op, $withSource, $okStatus );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestDelete( $op, $withSource, $okStatus );
+               $this->tearDownFiles();
+       }
+
+       private function doTestDelete( $op, $withSource, $okStatus ) {
+               $backendName = $this->backendClass();
+
+               $source = $op['src'];
+               $this->prepare( array( 'dir' => dirname( $source ) ) );
+
+               if ( $withSource ) {
+                       $status = $this->backend->doOperation(
+                               array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $source succeeded ($backendName)." );
+               }
+
+               $status = $this->backend->doOperation( $op );
+               if ( $okStatus ) {
+                       $this->assertGoodStatus( $status,
+                               "Deletion of file at $source succeeded without warnings ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Deletion of file at $source succeeded ($backendName)." );
+                       $this->assertEquals( array( 0 => true ), $status->success,
+                               "Deletion of file at $source has proper 'success' field in Status ($backendName)." );
+               } else {
+                       $this->assertEquals( false, $status->isOK(),
+                               "Deletion of file at $source failed ($backendName)." );
+               }
+
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
+                       "Source file $source does not exist after move ($backendName)." );
+
+               $this->assertFalse(
+                       $this->backend->getFileSize( array( 'src' => $source ) ),
+                       "Source file $source has correct size (false) ($backendName)." );
+
+               $props1 = $this->backend->getFileProps( array( 'src' => $source ) );
+               $this->assertFalse( $props1['fileExists'],
+                       "Source file $source does not exist according to props ($backendName)." );
+
+               $this->assertBackendPathsConsistent( array( $source ) );
+       }
+
+       public static function provider_testDelete() {
+               $cases = array();
+
+               $source = self::baseStorePath() . '/unittest-cont1/e/myfacefile.txt';
+
+               $op = array( 'op' => 'delete', 'src' => $source );
+               $cases[] = array(
+                       $op, // operation
+                       true, // with source
+                       true // succeeds
+               );
+
+               $cases[] = array(
+                       $op, // operation
+                       false, // without source
+                       false // fails
+               );
+
+               $op['ignoreMissingSource'] = true;
+               $cases[] = array(
+                       $op, // operation
+                       false, // without source
+                       true // succeeds
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testCreate
+        */
+       public function testCreate( $op, $alreadyExists, $okStatus, $newSize ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestCreate( $op, $alreadyExists, $okStatus, $newSize );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestCreate( $op, $alreadyExists, $okStatus, $newSize );
+               $this->tearDownFiles();
+       }
+
+       private function doTestCreate( $op, $alreadyExists, $okStatus, $newSize ) {
+               $backendName = $this->backendClass();
+
+               $dest = $op['dst'];
+               $this->prepare( array( 'dir' => dirname( $dest ) ) );
+
+               $oldText = 'blah...blah...waahwaah';
+               if ( $alreadyExists ) {
+                       $status = $this->backend->doOperation(
+                               array( 'op' => 'create', 'content' => $oldText, 'dst' => $dest ) );
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $dest succeeded ($backendName)." );
+               }
+
+               $status = $this->backend->doOperation( $op );
+               if ( $okStatus ) {
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $dest succeeded without warnings ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Creation of file at $dest succeeded ($backendName)." );
+                       $this->assertEquals( array( 0 => true ), $status->success,
+                               "Creation of file at $dest has proper 'success' field in Status ($backendName)." );
+               } else {
+                       $this->assertEquals( false, $status->isOK(),
+                               "Creation of file at $dest failed ($backendName)." );
+               }
+
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
+                       "Destination file $dest exists after creation ($backendName)." );
+
+               $props1 = $this->backend->getFileProps( array( 'src' => $dest ) );
+               $this->assertEquals( true, $props1['fileExists'],
+                       "Destination file $dest exists according to props ($backendName)." );
+               if ( $okStatus ) { // file content is what we saved
+                       $this->assertEquals( $newSize, $props1['size'],
+                               "Destination file $dest has expected size according to props ($backendName)." );
+                       $this->assertEquals( $newSize,
+                               $this->backend->getFileSize( array( 'src' => $dest ) ),
+                               "Destination file $dest has correct size ($backendName)." );
+               } else { // file content is some other previous text
+                       $this->assertEquals( strlen( $oldText ), $props1['size'],
+                               "Destination file $dest has original size according to props ($backendName)." );
+                       $this->assertEquals( strlen( $oldText ),
+                               $this->backend->getFileSize( array( 'src' => $dest ) ),
+                               "Destination file $dest has original size according to props ($backendName)." );
+               }
+
+               $this->assertBackendPathsConsistent( array( $dest ) );
+       }
+
+       /**
+        * @dataProvider provider_testCreate
+        */
+       public static function provider_testCreate() {
+               $cases = array();
+
+               $dest = self::baseStorePath() . '/unittest-cont2/a/myspacefile.txt';
+
+               $op = array( 'op' => 'create', 'content' => 'test test testing', 'dst' => $dest );
+               $cases[] = array(
+                       $op, // operation
+                       false, // no dest already exists
+                       true, // succeeds
+                       strlen( $op['content'] )
+               );
+
+               $op2 = $op;
+               $op2['content'] = "\n";
+               $cases[] = array(
+                       $op2, // operation
+                       false, // no dest already exists
+                       true, // succeeds
+                       strlen( $op2['content'] )
+               );
+
+               $op2 = $op;
+               $op2['content'] = "fsf\n waf 3kt";
+               $cases[] = array(
+                       $op2, // operation
+                       true, // dest already exists
+                       false, // fails
+                       strlen( $op2['content'] )
+               );
+
+               $op2 = $op;
+               $op2['content'] = "egm'g gkpe gpqg eqwgwqg";
+               $op2['overwrite'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       true, // dest already exists
+                       true, // succeeds
+                       strlen( $op2['content'] )
+               );
+
+               $op2 = $op;
+               $op2['content'] = "39qjmg3-qg";
+               $op2['overwriteSame'] = true;
+               $cases[] = array(
+                       $op2, // operation
+                       true, // dest already exists
+                       false, // succeeds
+                       strlen( $op2['content'] )
+               );
+
+               return $cases;
+       }
+
+       public function testDoQuickOperations() {
+               $this->backend = $this->singleBackend;
+               $this->doTestDoQuickOperations();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->doTestDoQuickOperations();
+               $this->tearDownFiles();
+       }
+
+       private function doTestDoQuickOperations() {
+               $backendName = $this->backendClass();
+
+               $base = self::baseStorePath();
+               $files = array(
+                       "$base/unittest-cont1/e/fileA.a",
+                       "$base/unittest-cont1/e/fileB.a",
+                       "$base/unittest-cont1/e/fileC.a"
+               );
+               $ops = array();
+               $purgeOps = array();
+               foreach ( $files as $path ) {
+                       $status = $this->prepare( array( 'dir' => dirname( $path ) ) );
+                       $this->assertGoodStatus( $status,
+                               "Preparing $path succeeded without warnings ($backendName)." );
+                       $ops[] = array( 'op' => 'create', 'dst' => $path, 'content' => mt_rand(0,50000) );
+                       $purgeOps[] = array( 'op' => 'delete', 'src' => $path );
+               }
+               $purgeOps[] = array( 'op' => 'null' );
+               $status = $this->backend->doQuickOperations( $ops );
+               $this->assertGoodStatus( $status,
+                       "Creation of source files succeeded ($backendName)." );
+
+               foreach ( $files as $file ) {
+                       $this->assertTrue( $this->backend->fileExists( array( 'src' => $file ) ),
+                               "File $file exists." );
+               }
+
+               $status = $this->backend->doQuickOperations( $purgeOps );
+               $this->assertGoodStatus( $status,
+                       "Quick deletion of source files succeeded ($backendName)." );
+
+               foreach ( $files as $file ) {
+                       $this->assertFalse( $this->backend->fileExists( array( 'src' => $file ) ),
+                               "File $file purged." );
+               }
+       }
+
+       /**
+        * @dataProvider provider_testConcatenate
+        */
+       public function testConcatenate( $op, $srcs, $srcsContent, $alreadyExists, $okStatus ) {
+               $this->filesToPrune[] = $op['dst'];
+
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestConcatenate( $op, $srcs, $srcsContent, $alreadyExists, $okStatus );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestConcatenate( $op, $srcs, $srcsContent, $alreadyExists, $okStatus );
+               $this->filesToPrune[] = $op['dst']; # avoid file leaking
+               $this->tearDownFiles();
+       }
+
+       private function doTestConcatenate( $params, $srcs, $srcsContent, $alreadyExists, $okStatus ) {
+               $backendName = $this->backendClass();
+
+               $expContent = '';
+               // Create sources
+               $ops = array();
+               foreach ( $srcs as $i => $source ) {
+                       $this->prepare( array( 'dir' => dirname( $source ) ) );
+                       $ops[] = array(
+                               'op'      => 'create', // operation
+                               'dst'     => $source, // source
+                               'content' => $srcsContent[$i]
+                       );
+                       $expContent .= $srcsContent[$i];
+               }
+               $status = $this->backend->doOperations( $ops );
+
+               $this->assertGoodStatus( $status,
+                       "Creation of source files succeeded ($backendName)." );
+
+               $dest = $params['dst'];
+               if ( $alreadyExists ) {
+                       $ok = file_put_contents( $dest, 'blah...blah...waahwaah' ) !== false;
+                       $this->assertEquals( true, $ok,
+                               "Creation of file at $dest succeeded ($backendName)." );
+               } else {
+                       $ok = file_put_contents( $dest, '' ) !== false;
+                       $this->assertEquals( true, $ok,
+                               "Creation of 0-byte file at $dest succeeded ($backendName)." );
+               }
+
+               // Combine the files into one
+               $status = $this->backend->concatenate( $params );
+               if ( $okStatus ) {
+                       $this->assertGoodStatus( $status,
+                               "Creation of concat file at $dest succeeded without warnings ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Creation of concat file at $dest succeeded ($backendName)." );
+               } else {
+                       $this->assertEquals( false, $status->isOK(),
+                               "Creation of concat file at $dest failed ($backendName)." );
+               }
+
+               if ( $okStatus ) {
+                       $this->assertEquals( true, is_file( $dest ),
+                               "Dest concat file $dest exists after creation ($backendName)." );
+               } else {
+                       $this->assertEquals( true, is_file( $dest ),
+                               "Dest concat file $dest exists after failed creation ($backendName)." );
+               }
+
+               $contents = file_get_contents( $dest );
+               $this->assertNotEquals( false, $contents, "File at $dest exists ($backendName)." );
+
+               if ( $okStatus ) {
+                       $this->assertEquals( $expContent, $contents,
+                               "Concat file at $dest has correct contents ($backendName)." );
+               } else {
+                       $this->assertNotEquals( $expContent, $contents,
+                               "Concat file at $dest has correct contents ($backendName)." );
+               }
+       }
+
+       function provider_testConcatenate() {
+               $cases = array();
+
+               $rand = mt_rand( 0, 2000000000 ) . time();
+               $dest = wfTempDir() . "/randomfile!$rand.txt";
+               $srcs = array(
+                       self::baseStorePath() . '/unittest-cont1/e/file1.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file2.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file3.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file4.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file5.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file6.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file7.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file8.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file9.txt',
+                       self::baseStorePath() . '/unittest-cont1/e/file10.txt'
+               );
+               $content = array(
+                       'egfage',
+                       'ageageag',
+                       'rhokohlr',
+                       'shgmslkg',
+                       'kenga',
+                       'owagmal',
+                       'kgmae',
+                       'g eak;g',
+                       'lkaem;a',
+                       'legma'
+               );
+               $params = array( 'srcs' => $srcs, 'dst' => $dest );
+
+               $cases[] = array(
+                       $params, // operation
+                       $srcs, // sources
+                       $content, // content for each source
+                       false, // no dest already exists
+                       true, // succeeds
+               );
+
+               $cases[] = array(
+                       $params, // operation
+                       $srcs, // sources
+                       $content, // content for each source
+                       true, // dest already exists
+                       false, // succeeds
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testGetFileStat
+        */
+       public function testGetFileStat( $path, $content, $alreadyExists ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetFileStat( $path, $content, $alreadyExists );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetFileStat( $path, $content, $alreadyExists );
+               $this->tearDownFiles();
+       }
+
+       private function doTestGetFileStat( $path, $content, $alreadyExists ) {
+               $backendName = $this->backendClass();
+
+               if ( $alreadyExists ) {
+                       $this->prepare( array( 'dir' => dirname( $path ) ) );
+                       $status = $this->create( array( 'dst' => $path, 'content' => $content ) );
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $path succeeded ($backendName)." );
+
+                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
+                       $time = $this->backend->getFileTimestamp( array( 'src' => $path ) );
+                       $stat = $this->backend->getFileStat( array( 'src' => $path ) );
+
+                       $this->assertEquals( strlen( $content ), $size,
+                               "Correct file size of '$path'" );
+                       $this->assertTrue( abs( time() - wfTimestamp( TS_UNIX, $time ) ) < 10,
+                               "Correct file timestamp of '$path'" );
+
+                       $size = $stat['size'];
+                       $time = $stat['mtime'];
+                       $this->assertEquals( strlen( $content ), $size,
+                               "Correct file size of '$path'" );
+                       $this->assertTrue( abs( time() - wfTimestamp( TS_UNIX, $time ) ) < 10,
+                               "Correct file timestamp of '$path'" );
+
+                       $this->backend->clearCache( array( $path ) );
+
+                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
+
+                       $this->assertEquals( strlen( $content ), $size,
+                               "Correct file size of '$path'" );
+
+                       $this->backend->preloadCache( array( $path ) );
+
+                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
+
+                       $this->assertEquals( strlen( $content ), $size,
+                               "Correct file size of '$path'" );
+               } else {
+                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
+                       $time = $this->backend->getFileTimestamp( array( 'src' => $path ) );
+                       $stat = $this->backend->getFileStat( array( 'src' => $path ) );
+
+                       $this->assertFalse( $size, "Correct file size of '$path'" );
+                       $this->assertFalse( $time, "Correct file timestamp of '$path'" );
+                       $this->assertFalse( $stat, "Correct file stat of '$path'" );
+               }
+       }
+
+       function provider_testGetFileStat() {
+               $cases = array();
+
+               $base = self::baseStorePath();
+               $cases[] = array( "$base/unittest-cont1/e/b/z/some_file.txt", "some file contents", true );
+               $cases[] = array( "$base/unittest-cont1/e/b/some-other_file.txt", "", true );
+               $cases[] = array( "$base/unittest-cont1/e/b/some-diff_file.txt", null, false );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testGetFileContents
+        */
+       public function testGetFileContents( $source, $content ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetFileContents( $source, $content );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetFileContents( $source, $content );
+               $this->tearDownFiles();
+       }
+
+       private function doTestGetFileContents( $source, $content ) {
+               $backendName = $this->backendClass();
+
+               $srcs = (array)$source;
+               $content = (array)$content;
+               foreach ( $srcs as $i => $src ) {
+                       $this->prepare( array( 'dir' => dirname( $src ) ) );
+                       $status = $this->backend->doOperation(
+                               array( 'op' => 'create', 'content' => $content[$i], 'dst' => $src ) );
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $src succeeded ($backendName)." );
+               }
+
+               if ( is_array( $source ) ) {
+                       $contents = $this->backend->getFileContentsMulti( array( 'srcs' => $source ) );
+                       foreach ( $contents as $path => $data ) {
+                               $this->assertNotEquals( false, $data, "Contents of $path exists ($backendName)." );
+                               $this->assertEquals( current( $content ), $data, "Contents of $path is correct ($backendName)." );
+                               next( $content );
+                       }
+                       $this->assertEquals( $source, array_keys( $contents ), "Contents in right order ($backendName)." );
+                       $this->assertEquals( count( $source ), count( $contents ), "Contents array size correct ($backendName)." );
+               } else {
+                       $data = $this->backend->getFileContents( array( 'src' => $source ) );
+                       $this->assertNotEquals( false, $data, "Contents of $source exists ($backendName)." );
+                       $this->assertEquals( $content[0], $data, "Contents of $source is correct ($backendName)." );
+               }
+       }
+
+       function provider_testGetFileContents() {
+               $cases = array();
+
+               $base = self::baseStorePath();
+               $cases[] = array( "$base/unittest-cont1/e/b/z/some_file.txt", "some file contents" );
+               $cases[] = array( "$base/unittest-cont1/e/b/some-other_file.txt", "more file contents" );
+               $cases[] = array(
+                       array( "$base/unittest-cont1/e/a/x.txt", "$base/unittest-cont1/e/a/y.txt",
+                                "$base/unittest-cont1/e/a/z.txt" ),
+                       array( "contents xx", "contents xy", "contents xz" )
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testGetLocalCopy
+        */
+       public function testGetLocalCopy( $source, $content ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetLocalCopy( $source, $content );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetLocalCopy( $source, $content );
+               $this->tearDownFiles();
+       }
+
+       private function doTestGetLocalCopy( $source, $content ) {
+               $backendName = $this->backendClass();
+
+               $srcs = (array)$source;
+               $content = (array)$content;
+               foreach ( $srcs as $i => $src ) {
+                       $this->prepare( array( 'dir' => dirname( $src ) ) );
+                       $status = $this->backend->doOperation(
+                               array( 'op' => 'create', 'content' => $content[$i], 'dst' => $src ) );
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $src succeeded ($backendName)." );
+               }
+
+               if ( is_array( $source ) ) {
+                       $tmpFiles = $this->backend->getLocalCopyMulti( array( 'srcs' => $source ) );
+                       foreach ( $tmpFiles as $path => $tmpFile ) {
+                               $this->assertNotNull( $tmpFile,
+                                       "Creation of local copy of $path succeeded ($backendName)." );
+                               $contents = file_get_contents( $tmpFile->getPath() );
+                               $this->assertNotEquals( false, $contents, "Local copy of $path exists ($backendName)." );
+                               $this->assertEquals( current( $content ), $contents, "Local copy of $path is correct ($backendName)." );
+                               next( $content );
+                       }
+                       $this->assertEquals( $source, array_keys( $tmpFiles ), "Local copies in right order ($backendName)." );
+                       $this->assertEquals( count( $source ), count( $tmpFiles ), "Local copies array size correct ($backendName)." );
+               } else {
+                       $tmpFile = $this->backend->getLocalCopy( array( 'src' => $source ) );
+                       $this->assertNotNull( $tmpFile,
+                               "Creation of local copy of $source succeeded ($backendName)." );
+                       $contents = file_get_contents( $tmpFile->getPath() );
+                       $this->assertNotEquals( false, $contents, "Local copy of $source exists ($backendName)." );
+                       $this->assertEquals( $content[0], $contents, "Local copy of $source is correct ($backendName)." );
+               }
+
+               $obj = new stdClass();
+               $tmpFile->bind( $obj );
+       }
+
+       function provider_testGetLocalCopy() {
+               $cases = array();
+
+               $base = self::baseStorePath();
+               $cases[] = array( "$base/unittest-cont1/e/a/z/some_file.txt", "some file contents" );
+               $cases[] = array( "$base/unittest-cont1/e/a/some-other_file.txt", "more file contents" );
+               $cases[] = array( "$base/unittest-cont1/e/a/\$odd&.txt", "test file contents" );
+               $cases[] = array(
+                       array( "$base/unittest-cont1/e/a/x.txt", "$base/unittest-cont1/e/a/y.txt",
+                                "$base/unittest-cont1/e/a/z.txt" ),
+                       array( "contents xx", "contents xy", "contents xz" )
+               );
+
+               return $cases;
+       }
+
+       /**
+        * @dataProvider provider_testGetLocalReference
+        */
+       public function testGetLocalReference( $source, $content ) {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetLocalReference( $source, $content );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetLocalReference( $source, $content );
+               $this->tearDownFiles();
+       }
+
+       private function doTestGetLocalReference( $source, $content ) {
+               $backendName = $this->backendClass();
+
+               $srcs = (array)$source;
+               $content = (array)$content;
+               foreach ( $srcs as $i => $src ) {
+                       $this->prepare( array( 'dir' => dirname( $src ) ) );
+                       $status = $this->backend->doOperation(
+                               array( 'op' => 'create', 'content' => $content[$i], 'dst' => $src ) );
+                       $this->assertGoodStatus( $status,
+                               "Creation of file at $src succeeded ($backendName)." );
+               }
+
+               if ( is_array( $source ) ) {
+                       $tmpFiles = $this->backend->getLocalReferenceMulti( array( 'srcs' => $source ) );
+                       foreach ( $tmpFiles as $path => $tmpFile ) {
+                               $this->assertNotNull( $tmpFile,
+                                       "Creation of local copy of $path succeeded ($backendName)." );
+                               $contents = file_get_contents( $tmpFile->getPath() );
+                               $this->assertNotEquals( false, $contents, "Local ref of $path exists ($backendName)." );
+                               $this->assertEquals( current( $content ), $contents, "Local ref of $path is correct ($backendName)." );
+                               next( $content );
+                       }
+                       $this->assertEquals( $source, array_keys( $tmpFiles ), "Local refs in right order ($backendName)." );
+                       $this->assertEquals( count( $source ), count( $tmpFiles ), "Local refs array size correct ($backendName)." );
+               } else {
+                       $tmpFile = $this->backend->getLocalReference( array( 'src' => $source ) );
+                       $this->assertNotNull( $tmpFile,
+                               "Creation of local copy of $source succeeded ($backendName)." );
+                       $contents = file_get_contents( $tmpFile->getPath() );
+                       $this->assertNotEquals( false, $contents, "Local ref of $source exists ($backendName)." );
+                       $this->assertEquals( $content[0], $contents, "Local ref of $source is correct ($backendName)." );
+               }
+       }
+
+       function provider_testGetLocalReference() {
+               $cases = array();
+
+               $base = self::baseStorePath();
+               $cases[] = array( "$base/unittest-cont1/e/a/z/some_file.txt", "some file contents" );
+               $cases[] = array( "$base/unittest-cont1/e/a/some-other_file.txt", "more file contents" );
+               $cases[] = array( "$base/unittest-cont1/e/a/\$odd&.txt", "test file contents" );
+               $cases[] = array(
+                       array( "$base/unittest-cont1/e/a/x.txt", "$base/unittest-cont1/e/a/y.txt",
+                                "$base/unittest-cont1/e/a/z.txt" ),
+                       array( "contents xx", "contents xy", "contents xz" )
+               );
+
+               return $cases;
+       }
+
+       public function testGetLocalCopyAndReference404() {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetLocalCopyAndReference404();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetLocalCopyAndReference404();
+               $this->tearDownFiles();
+       }
+
+       public function doTestGetLocalCopyAndReference404() {
+               $backendName = $this->backendClass();
+
+               $base = self::baseStorePath();
+
+               $tmpFile = $this->backend->getLocalCopy( array(
+                       'src' => "$base/unittest-cont1/not-there" ) );
+               $this->assertEquals( null, $tmpFile, "Local copy of not existing file is null ($backendName)." );
+
+               $tmpFile = $this->backend->getLocalReference( array(
+                       'src' => "$base/unittest-cont1/not-there" ) );
+               $this->assertEquals( null, $tmpFile, "Local ref of not existing file is null ($backendName)." );
+       }
+
+       /**
+        * @dataProvider provider_testPrepareAndClean
+        */
+       public function testPrepareAndClean( $path, $isOK ) {
+               $this->backend = $this->singleBackend;
+               $this->doTestPrepareAndClean( $path, $isOK );
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->doTestPrepareAndClean( $path, $isOK );
+               $this->tearDownFiles();
+       }
+
+       function provider_testPrepareAndClean() {
+               $base = self::baseStorePath();
+               return array(
+                       array( "$base/unittest-cont1/e/a/z/some_file1.txt", true ),
+                       array( "$base/unittest-cont2/a/z/some_file2.txt", true ),
+                       # Specific to FS backend with no basePath field set
+                       #array( "$base/unittest-cont3/a/z/some_file3.txt", false ),
+               );
+       }
+
+       private function doTestPrepareAndClean( $path, $isOK ) {
+               $backendName = $this->backendClass();
+
+               $status = $this->prepare( array( 'dir' => dirname( $path ) ) );
+               if ( $isOK ) {
+                       $this->assertGoodStatus( $status,
+                               "Preparing dir $path succeeded without warnings ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Preparing dir $path succeeded ($backendName)." );
+               } else {
+                       $this->assertEquals( false, $status->isOK(),
+                               "Preparing dir $path failed ($backendName)." );
+               }
+
+               $status = $this->backend->clean( array( 'dir' => dirname( $path ) ) );
+               if ( $isOK ) {
+                       $this->assertGoodStatus( $status,
+                               "Cleaning dir $path succeeded without warnings ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Cleaning dir $path succeeded ($backendName)." );
+               } else {
+                       $this->assertEquals( false, $status->isOK(),
+                               "Cleaning dir $path failed ($backendName)." );
+               }
+       }
+
+       public function testRecursiveClean() {
+               $this->backend = $this->singleBackend;
+               $this->doTestRecursiveClean();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->doTestRecursiveClean();
+               $this->tearDownFiles();
+       }
+
+       private function doTestRecursiveClean() {
+               $backendName = $this->backendClass();
+
+               $base = self::baseStorePath();
+               $dirs = array(
+                       "$base/unittest-cont1/e/a",
+                       "$base/unittest-cont1/e/a/b",
+                       "$base/unittest-cont1/e/a/b/c",
+                       "$base/unittest-cont1/e/a/b/c/d0",
+                       "$base/unittest-cont1/e/a/b/c/d1",
+                       "$base/unittest-cont1/e/a/b/c/d2",
+                       "$base/unittest-cont1/e/a/b/c/d0/1",
+                       "$base/unittest-cont1/e/a/b/c/d0/2",
+                       "$base/unittest-cont1/e/a/b/c/d1/3",
+                       "$base/unittest-cont1/e/a/b/c/d1/4",
+                       "$base/unittest-cont1/e/a/b/c/d2/5",
+                       "$base/unittest-cont1/e/a/b/c/d2/6"
+               );
+               foreach ( $dirs as $dir ) {
+                       $status = $this->prepare( array( 'dir' => $dir ) );
+                       $this->assertGoodStatus( $status,
+                               "Preparing dir $dir succeeded without warnings ($backendName)." );
+               }
+
+               if ( $this->backend instanceof FSFileBackend ) {
+                       foreach ( $dirs as $dir ) {
+                               $this->assertEquals( true, $this->backend->directoryExists( array( 'dir' => $dir ) ),
+                                       "Dir $dir exists ($backendName)." );
+                       }
+               }
+
+               $status = $this->backend->clean(
+                       array( 'dir' => "$base/unittest-cont1", 'recursive' => 1 ) );
+               $this->assertGoodStatus( $status,
+                       "Recursive cleaning of dir $dir succeeded without warnings ($backendName)." );
+
+               foreach ( $dirs as $dir ) {
+                       $this->assertEquals( false, $this->backend->directoryExists( array( 'dir' => $dir ) ),
+                               "Dir $dir no longer exists ($backendName)." );
+               }
+       }
+
+       // @TODO: testSecure
+
+       public function testDoOperations() {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperations();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperations();
+               $this->tearDownFiles();
+       }
+
+       private function doTestDoOperations() {
+               $base = self::baseStorePath();
+
+               $fileA = "$base/unittest-cont1/e/a/b/fileA.txt";
+               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
+               $fileB = "$base/unittest-cont1/e/a/b/fileB.txt";
+               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
+               $fileC = "$base/unittest-cont1/e/a/b/fileC.txt";
+               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
+               $fileD = "$base/unittest-cont1/e/a/b/fileD.txt";
+
+               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
+               $this->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
+               $this->create( array( 'dst' => $fileB, 'content' => $fileBContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
+               $this->create( array( 'dst' => $fileC, 'content' => $fileCContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileD ) ) );
+
+               $status = $this->backend->doOperations( array(
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<empty>, D:<A>
+                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC ),
+                       // Now: A:<A>, B:<empty>, C:<B>, D:<A>
+                       array( 'op' => 'move', 'src' => $fileD, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileA, 'overwrite' => 1 ),
+                       // Now: A:<B>, B:<empty>, C:<empty>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC ),
+                       // Now: A:<B>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileA, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Now: A:<empty>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'null' ),
+                       // Does nothing
+               ) );
+
+               $this->assertGoodStatus( $status, "Operation batch succeeded" );
+               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
+               $this->assertEquals( 13, count( $status->success ),
+                       "Operation batch has correct success array" );
+
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileA ) ),
+                       "File does not exist at $fileA" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
+                       "File does not exist at $fileB" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
+                       "File does not exist at $fileD" );
+
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
+                       "File exists at $fileC" );
+               $this->assertEquals( $fileBContents,
+                       $this->backend->getFileContents( array( 'src' => $fileC ) ),
+                       "Correct file contents of $fileC" );
+               $this->assertEquals( strlen( $fileBContents ),
+                       $this->backend->getFileSize( array( 'src' => $fileC ) ),
+                       "Correct file size of $fileC" );
+               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
+                       $this->backend->getFileSha1Base36( array( 'src' => $fileC ) ),
+                       "Correct file SHA-1 of $fileC" );
+       }
+
+       public function testDoOperationsPipeline() {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperationsPipeline();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperationsPipeline();
+               $this->tearDownFiles();
+       }
+
+       // concurrency orientated
+       private function doTestDoOperationsPipeline() {
+               $base = self::baseStorePath();
+
+               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
+               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
+               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
+
+               $tmpNameA = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               file_put_contents( $tmpNameA, $fileAContents );
+               $tmpNameB = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               file_put_contents( $tmpNameB, $fileBContents );
+               $tmpNameC = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               file_put_contents( $tmpNameC, $fileCContents );
+
+               $this->filesToPrune[] = $tmpNameA; # avoid file leaking
+               $this->filesToPrune[] = $tmpNameB; # avoid file leaking
+               $this->filesToPrune[] = $tmpNameC; # avoid file leaking
+
+               $fileA = "$base/unittest-cont1/e/a/b/fileA.txt";
+               $fileB = "$base/unittest-cont1/e/a/b/fileB.txt";
+               $fileC = "$base/unittest-cont1/e/a/b/fileC.txt";
+               $fileD = "$base/unittest-cont1/e/a/b/fileD.txt";
+
+               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
+               $this->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
+               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
+               $this->prepare( array( 'dir' => dirname( $fileD ) ) );
+
+               $status = $this->backend->doOperations( array(
+                       array( 'op' => 'store', 'src' => $tmpNameA, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       array( 'op' => 'store', 'src' => $tmpNameB, 'dst' => $fileB, 'overwrite' => 1 ),
+                       array( 'op' => 'store', 'src' => $tmpNameC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<empty>, D:<A>
+                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC ),
+                       // Now: A:<A>, B:<empty>, C:<B>, D:<A>
+                       array( 'op' => 'move', 'src' => $fileD, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileA, 'overwrite' => 1 ),
+                       // Now: A:<B>, B:<empty>, C:<empty>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC ),
+                       // Now: A:<B>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileA, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Now: A:<empty>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'null' ),
+                       // Does nothing
+               ) );
+
+               $this->assertGoodStatus( $status, "Operation batch succeeded" );
+               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
+               $this->assertEquals( 16, count( $status->success ),
+                       "Operation batch has correct success array" );
+
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileA ) ),
+                       "File does not exist at $fileA" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
+                       "File does not exist at $fileB" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
+                       "File does not exist at $fileD" );
+
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
+                       "File exists at $fileC" );
+               $this->assertEquals( $fileBContents,
+                       $this->backend->getFileContents( array( 'src' => $fileC ) ),
+                       "Correct file contents of $fileC" );
+               $this->assertEquals( strlen( $fileBContents ),
+                       $this->backend->getFileSize( array( 'src' => $fileC ) ),
+                       "Correct file size of $fileC" );
+               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
+                       $this->backend->getFileSha1Base36( array( 'src' => $fileC ) ),
+                       "Correct file SHA-1 of $fileC" );
+       }
+
+       public function testDoOperationsFailing() {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperationsFailing();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperationsFailing();
+               $this->tearDownFiles();
+       }
+
+       private function doTestDoOperationsFailing() {
+               $base = self::baseStorePath();
+
+               $fileA = "$base/unittest-cont2/a/b/fileA.txt";
+               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
+               $fileB = "$base/unittest-cont2/a/b/fileB.txt";
+               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
+               $fileC = "$base/unittest-cont2/a/b/fileC.txt";
+               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
+               $fileD = "$base/unittest-cont2/a/b/fileD.txt";
+
+               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
+               $this->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
+               $this->create( array( 'dst' => $fileB, 'content' => $fileBContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
+               $this->create( array( 'dst' => $fileC, 'content' => $fileCContents ) );
+
+               $status = $this->backend->doOperations( array(
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileB, 'dst' => $fileD, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<B>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (failed)
+                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (failed)
+                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileA, 'overwrite' => 1 ),
+                       // Now: A:<B>, B:<empty>, C:<A>, D:<empty>
+                       array( 'op' => 'delete', 'src' => $fileD ),
+                       // Now: A:<B>, B:<empty>, C:<A>, D:<empty>
+                       array( 'op' => 'null' ),
+                       // Does nothing
+               ), array( 'force' => 1 ) );
+
+               $this->assertNotEquals( array(), $status->errors, "Operation had warnings" );
+               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
+               $this->assertEquals( 8, count( $status->success ),
+                       "Operation batch has correct success array" );
+
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
+                       "File does not exist at $fileB" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
+                       "File does not exist at $fileD" );
+
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileA ) ),
+                       "File does not exist at $fileA" );
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
+                       "File exists at $fileC" );
+               $this->assertEquals( $fileBContents,
+                       $this->backend->getFileContents( array( 'src' => $fileA ) ),
+                       "Correct file contents of $fileA" );
+               $this->assertEquals( strlen( $fileBContents ),
+                       $this->backend->getFileSize( array( 'src' => $fileA ) ),
+                       "Correct file size of $fileA" );
+               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
+                       $this->backend->getFileSha1Base36( array( 'src' => $fileA ) ),
+                       "Correct file SHA-1 of $fileA" );
+       }
+
+       public function testGetFileList() {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetFileList();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetFileList();
+               $this->tearDownFiles();
+       }
+
+       private function doTestGetFileList() {
+               $backendName = $this->backendClass();
+               $base = self::baseStorePath();
+
+               // Should have no errors
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont-notexists" ) );
+
+               $files = array(
+                       "$base/unittest-cont1/e/test1.txt",
+                       "$base/unittest-cont1/e/test2.txt",
+                       "$base/unittest-cont1/e/test3.txt",
+                       "$base/unittest-cont1/e/subdir1/test1.txt",
+                       "$base/unittest-cont1/e/subdir1/test2.txt",
+                       "$base/unittest-cont1/e/subdir2/test3.txt",
+                       "$base/unittest-cont1/e/subdir2/test4.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/test1.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/test2.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/test3.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/test4.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/test5.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/sub/test0.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/sub/120-px-file.txt",
+               );
+
+               // Add the files
+               $ops = array();
+               foreach ( $files as $file ) {
+                       $this->prepare( array( 'dir' => dirname( $file ) ) );
+                       $ops[] = array( 'op' => 'create', 'content' => 'xxy', 'dst' => $file );
+               }
+               $status = $this->backend->doQuickOperations( $ops );
+               $this->assertGoodStatus( $status,
+                       "Creation of files succeeded ($backendName)." );
+               $this->assertEquals( true, $status->isOK(),
+                       "Creation of files succeeded with OK status ($backendName)." );
+
+               // Expected listing
+               $expected = array(
+                       "e/test1.txt",
+                       "e/test2.txt",
+                       "e/test3.txt",
+                       "e/subdir1/test1.txt",
+                       "e/subdir1/test2.txt",
+                       "e/subdir2/test3.txt",
+                       "e/subdir2/test4.txt",
+                       "e/subdir2/subdir/test1.txt",
+                       "e/subdir2/subdir/test2.txt",
+                       "e/subdir2/subdir/test3.txt",
+                       "e/subdir2/subdir/test4.txt",
+                       "e/subdir2/subdir/test5.txt",
+                       "e/subdir2/subdir/sub/test0.txt",
+                       "e/subdir2/subdir/sub/120-px-file.txt",
+               );
+               sort( $expected );
+
+               // Actual listing (no trailing slash)
+               $list = array();
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
+
+               // Actual listing (with trailing slash)
+               $list = array();
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
+
+               // Expected listing
+               $expected = array(
+                       "test1.txt",
+                       "test2.txt",
+                       "test3.txt",
+                       "test4.txt",
+                       "test5.txt",
+                       "sub/test0.txt",
+                       "sub/120-px-file.txt",
+               );
+               sort( $expected );
+
+               // Actual listing (no trailing slash)
+               $list = array();
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
+
+               // Actual listing (with trailing slash)
+               $list = array();
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir/" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
+
+               // Actual listing (using iterator second time)
+               $list = array();
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct file listing ($backendName), second iteration." );
+
+               // Expected listing (top files only)
+               $expected = array(
+                       "test1.txt",
+                       "test2.txt",
+                       "test3.txt",
+                       "test4.txt",
+                       "test5.txt"
+               );
+               sort( $expected );
+
+               // Actual listing (top files only)
+               $list = array();
+               $iter = $this->backend->getTopFileList( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top file listing ($backendName)." );
+
+               foreach ( $files as $file ) { // clean up
+                       $this->backend->doOperation( array( 'op' => 'delete', 'src' => $file ) );
+               }
+
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/not/exists" ) );
+               foreach ( $iter as $iter ) {} // no errors
+       }
+
+       public function testGetDirectoryList() {
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
+               $this->doTestGetDirectoryList();
+               $this->tearDownFiles();
+
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestGetDirectoryList();
+               $this->tearDownFiles();
+       }
+
+       private function doTestGetDirectoryList() {
+               $backendName = $this->backendClass();
+
+               $base = self::baseStorePath();
+               $files = array(
+                       "$base/unittest-cont1/e/test1.txt",
+                       "$base/unittest-cont1/e/test2.txt",
+                       "$base/unittest-cont1/e/test3.txt",
+                       "$base/unittest-cont1/e/subdir1/test1.txt",
+                       "$base/unittest-cont1/e/subdir1/test2.txt",
+                       "$base/unittest-cont1/e/subdir2/test3.txt",
+                       "$base/unittest-cont1/e/subdir2/test4.txt",
+                       "$base/unittest-cont1/e/subdir2/subdir/test1.txt",
+                       "$base/unittest-cont1/e/subdir3/subdir/test2.txt",
+                       "$base/unittest-cont1/e/subdir4/subdir/test3.txt",
+                       "$base/unittest-cont1/e/subdir4/subdir/test4.txt",
+                       "$base/unittest-cont1/e/subdir4/subdir/test5.txt",
+                       "$base/unittest-cont1/e/subdir4/subdir/sub/test0.txt",
+                       "$base/unittest-cont1/e/subdir4/subdir/sub/120-px-file.txt",
+               );
+
+               // Add the files
+               $ops = array();
+               foreach ( $files as $file ) {
+                       $this->prepare( array( 'dir' => dirname( $file ) ) );
+                       $ops[] = array( 'op' => 'create', 'content' => 'xxy', 'dst' => $file );
+               }
+               $status = $this->backend->doQuickOperations( $ops );
+               $this->assertGoodStatus( $status,
+                       "Creation of files succeeded ($backendName)." );
+               $this->assertEquals( true, $status->isOK(),
+                       "Creation of files succeeded with OK status ($backendName)." );
+
+               $this->assertEquals( true,
+                       $this->backend->directoryExists( array( 'dir' => "$base/unittest-cont1/e/subdir1" ) ),
+                       "Directory exists in ($backendName)." );
+               $this->assertEquals( true,
+                       $this->backend->directoryExists( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir" ) ),
+                       "Directory exists in ($backendName)." );
+               $this->assertEquals( false,
+                       $this->backend->directoryExists( array( 'dir' => "$base/unittest-cont1/e/subdir2/test1.txt" ) ),
+                       "Directory does not exists in ($backendName)." );
+
+               // Expected listing
+               $expected = array(
+                       "e",
+               );
+               sort( $expected );
+
+               // Actual listing (no trailing slash)
+               $list = array();
+               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
+
+               // Expected listing
+               $expected = array(
+                       "subdir1",
+                       "subdir2",
+                       "subdir3",
+                       "subdir4",
+               );
+               sort( $expected );
+
+               // Actual listing (no trailing slash)
+               $list = array();
+               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
+
+               // Actual listing (with trailing slash)
+               $list = array();
+               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e/" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
+
+               // Expected listing
+               $expected = array(
+                       "subdir",
+               );
+               sort( $expected );
+
+               // Actual listing (no trailing slash)
+               $list = array();
+               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e/subdir2" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
+
+               // Actual listing (with trailing slash)
+               $list = array();
+               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e/subdir2/" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
+
+               // Actual listing (using iterator second time)
+               $list = array();
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName), second iteration." );
+
+               // Expected listing (recursive)
+               $expected = array(
+                       "e",
+                       "e/subdir1",
+                       "e/subdir2",
+                       "e/subdir3",
+                       "e/subdir4",
+                       "e/subdir2/subdir",
+                       "e/subdir3/subdir",
+                       "e/subdir4/subdir",
+                       "e/subdir4/subdir/sub",
+               );
+               sort( $expected );
+
+               // Actual listing (recursive)
+               $list = array();
+               $iter = $this->backend->getDirectoryList( array( 'dir' => "$base/unittest-cont1/" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct dir listing ($backendName)." );
+
+               // Expected listing (recursive)
+               $expected = array(
+                       "subdir",
+                       "subdir/sub",
+               );
+               sort( $expected );
+
+               // Actual listing (recursive)
+               $list = array();
+               $iter = $this->backend->getDirectoryList( array( 'dir' => "$base/unittest-cont1/e/subdir4" ) );
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct dir listing ($backendName)." );
+
+               // Actual listing (recursive, second time)
+               $list = array();
+               foreach ( $iter as $file ) {
+                       $list[] = $file;
+               }
+               sort( $list );
+
+               $this->assertEquals( $expected, $list, "Correct dir listing ($backendName)." );
+
+               foreach ( $files as $file ) { // clean up
+                       $this->backend->doOperation( array( 'op' => 'delete', 'src' => $file ) );
+               }
+
+               $iter = $this->backend->getDirectoryList( array( 'dir' => "$base/unittest-cont1/not/exists" ) );
+               foreach ( $iter as $iter ) {} // no errors
+       }
+
+       public function testLockCalls() {
+               $this->backend = $this->singleBackend;
+               $this->doTestLockCalls();
+       }
+
+       private function doTestLockCalls() {
+               $backendName = $this->backendClass();
+
+               for ( $i=0; $i<50; $i++ ) {
+                       $paths = array(
+                               "test1.txt",
+                               "test2.txt",
+                               "test3.txt",
+                               "subdir1",
+                               "subdir1", // duplicate
+                               "subdir1/test1.txt",
+                               "subdir1/test2.txt",
+                               "subdir2",
+                               "subdir2", // duplicate
+                               "subdir2/test3.txt",
+                               "subdir2/test4.txt",
+                               "subdir2/subdir",
+                               "subdir2/subdir/test1.txt",
+                               "subdir2/subdir/test2.txt",
+                               "subdir2/subdir/test3.txt",
+                               "subdir2/subdir/test4.txt",
+                               "subdir2/subdir/test5.txt",
+                               "subdir2/subdir/sub",
+                               "subdir2/subdir/sub/test0.txt",
+                               "subdir2/subdir/sub/120-px-file.txt",
+                       );
+
+                       $status = $this->backend->lockFiles( $paths, LockManager::LOCK_EX );
+                       $this->assertEquals( array(), $status->errors,
+                               "Locking of files succeeded ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Locking of files succeeded with OK status ($backendName)." );
+
+                       $status = $this->backend->lockFiles( $paths, LockManager::LOCK_SH );
+                       $this->assertEquals( array(), $status->errors,
+                               "Locking of files succeeded ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Locking of files succeeded with OK status ($backendName)." );
+
+                       $status = $this->backend->unlockFiles( $paths, LockManager::LOCK_SH );
+                       $this->assertEquals( array(), $status->errors,
+                               "Locking of files succeeded ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Locking of files succeeded with OK status ($backendName)." );
+
+                       $status = $this->backend->unlockFiles( $paths, LockManager::LOCK_EX );
+                       $this->assertEquals( array(), $status->errors,
+                               "Locking of files succeeded ($backendName)." );
+                       $this->assertEquals( true, $status->isOK(),
+                               "Locking of files succeeded with OK status ($backendName)." );
+               }
+       }
+
+       // test helper wrapper for backend prepare() function
+       private function prepare( array $params ) {
+               return $this->backend->prepare( $params );
+       }
+
+       // test helper wrapper for backend prepare() function
+       private function create( array $params ) {
+               $params['op'] = 'create';
+               return $this->backend->doQuickOperations( array( $params ) );
+       }
+
+       function tearDownFiles() {
+               foreach ( $this->filesToPrune as $file ) {
+                       @unlink( $file );
+               }
+               $containers = array( 'unittest-cont1', 'unittest-cont2' );
+               foreach ( $containers as $container ) {
+                       $this->deleteFiles( $container );
+               }
+               $this->filesToPrune = array();
+       }
+
+       private function deleteFiles( $container ) {
+               $base = self::baseStorePath();
+               $iter = $this->backend->getFileList( array( 'dir' => "$base/$container" ) );
+               if ( $iter ) {
+                       foreach ( $iter as $file ) {
+                               $this->backend->quickDelete( array( 'src' => "$base/$container/$file" ) );
+                       }
+               }
+               $this->backend->clean( array( 'dir' => "$base/$container", 'recursive' => 1 ) );
+       }
+
+       function assertBackendPathsConsistent( array $paths ) {
+               if ( $this->backend instanceof FileBackendMultiWrite ) {
+                       $status = $this->backend->consistencyCheck( $paths );
+                       $this->assertGoodStatus( $status, "Files synced: " . implode( ',', $paths ) );
+               }
+       }
+
+       function assertGoodStatus( $status, $msg ) {
+               $this->assertEquals( print_r( array(), 1 ), print_r( $status->errors, 1 ), $msg );
+       }
+}
diff --git a/tests/phpunit/includes/filerepo/FileBackendTest.php b/tests/phpunit/includes/filerepo/FileBackendTest.php
deleted file mode 100644 (file)
index da36e90..0000000
+++ /dev/null
@@ -1,1995 +0,0 @@
-<?php
-
-/**
- * @group FileRepo
- * @group FileBackend
- * @group medium
- */
-class FileBackendTest extends MediaWikiTestCase {
-       private $backend, $multiBackend;
-       private $filesToPrune = array();
-       private static $backendToUse;
-
-       protected function setUp() {
-               global $wgFileBackends;
-               parent::setUp();
-               $tmpPrefix = wfTempDir() . '/filebackend-unittest-' . time() . '-' . mt_rand();
-               if ( $this->getCliArg( 'use-filebackend=' ) ) {
-                       if ( self::$backendToUse ) {
-                               $this->singleBackend = self::$backendToUse;
-                       } else {
-                               $name = $this->getCliArg( 'use-filebackend=' );
-                               $useConfig = array();
-                               foreach ( $wgFileBackends as $conf ) {
-                                       if ( $conf['name'] == $name ) {
-                                               $useConfig = $conf;
-                                               break;
-                                       }
-                               }
-                               $useConfig['name'] = 'localtesting'; // swap name
-                               $useConfig['shardViaHashLevels'] = array( // test sharding
-                                       'unittest-cont1' => array( 'levels' => 1, 'base' => 16, 'repeat' => 1 )
-                               );
-                               $class = $useConfig['class'];
-                               self::$backendToUse = new $class( $useConfig );
-                               $this->singleBackend = self::$backendToUse;
-                       }
-               } else {
-                       $this->singleBackend = new FSFileBackend( array(
-                               'name'        => 'localtesting',
-                               'lockManager' => 'fsLockManager',
-                               #'parallelize' => 'implicit',
-                               'containerPaths' => array(
-                                       'unittest-cont1' => "{$tmpPrefix}-localtesting-cont1",
-                                       'unittest-cont2' => "{$tmpPrefix}-localtesting-cont2" )
-                       ) );
-               }
-               $this->multiBackend = new FileBackendMultiWrite( array(
-                       'name'        => 'localtesting',
-                       'lockManager' => 'fsLockManager',
-                       'parallelize' => 'implicit',
-                       'backends'    => array(
-                               array(
-                                       'name'          => 'localmultitesting1',
-                                       'class'         => 'FSFileBackend',
-                                       'lockManager'   => 'nullLockManager',
-                                       'containerPaths' => array(
-                                               'unittest-cont1' => "{$tmpPrefix}-localtestingmulti1-cont1",
-                                               'unittest-cont2' => "{$tmpPrefix}-localtestingmulti1-cont2" ),
-                                       'isMultiMaster' => false
-                               ),
-                               array(
-                                       'name'          => 'localmultitesting2',
-                                       'class'         => 'FSFileBackend',
-                                       'lockManager'   => 'nullLockManager',
-                                       'containerPaths' => array(
-                                               'unittest-cont1' => "{$tmpPrefix}-localtestingmulti2-cont1",
-                                               'unittest-cont2' => "{$tmpPrefix}-localtestingmulti2-cont2" ),
-                                       'isMultiMaster' => true
-                               )
-                       )
-               ) );
-               $this->filesToPrune = array();
-       }
-
-       private static function baseStorePath() {
-               return 'mwstore://localtesting';
-       }
-
-       private function backendClass() {
-               return get_class( $this->backend );
-       }
-
-       /**
-        * @dataProvider provider_testIsStoragePath
-        */
-       public function testIsStoragePath( $path, $isStorePath ) {
-               $this->assertEquals( $isStorePath, FileBackend::isStoragePath( $path ),
-                       "FileBackend::isStoragePath on path '$path'" );
-       }
-
-       function provider_testIsStoragePath() {
-               return array(
-                       array( 'mwstore://', true ),
-                       array( 'mwstore://backend', true ),
-                       array( 'mwstore://backend/container', true ),
-                       array( 'mwstore://backend/container/', true ),
-                       array( 'mwstore://backend/container/path', true ),
-                       array( 'mwstore://backend//container/', true ),
-                       array( 'mwstore://backend//container//', true ),
-                       array( 'mwstore://backend//container//path', true ),
-                       array( 'mwstore:///', true ),
-                       array( 'mwstore:/', false ),
-                       array( 'mwstore:', false ),
-               );
-       }
-
-       /**
-        * @dataProvider provider_testSplitStoragePath
-        */
-       public function testSplitStoragePath( $path, $res ) {
-               $this->assertEquals( $res, FileBackend::splitStoragePath( $path ),
-                       "FileBackend::splitStoragePath on path '$path'" );
-       }
-
-       function provider_testSplitStoragePath() {
-               return array(
-                       array( 'mwstore://backend/container', array( 'backend', 'container', '' ) ),
-                       array( 'mwstore://backend/container/', array( 'backend', 'container', '' ) ),
-                       array( 'mwstore://backend/container/path', array( 'backend', 'container', 'path' ) ),
-                       array( 'mwstore://backend/container//path', array( 'backend', 'container', '/path' ) ),
-                       array( 'mwstore://backend//container/path', array( null, null, null ) ),
-                       array( 'mwstore://backend//container//path', array( null, null, null ) ),
-                       array( 'mwstore://', array( null, null, null ) ),
-                       array( 'mwstore://backend', array( null, null, null ) ),
-                       array( 'mwstore:///', array( null, null, null ) ),
-                       array( 'mwstore:/', array( null, null, null ) ),
-                       array( 'mwstore:', array( null, null, null ) )
-               );
-       }
-
-       /**
-        * @dataProvider provider_normalizeStoragePath
-        */
-       public function testNormalizeStoragePath( $path, $res ) {
-               $this->assertEquals( $res, FileBackend::normalizeStoragePath( $path ),
-                       "FileBackend::normalizeStoragePath on path '$path'" );
-       }
-
-       function provider_normalizeStoragePath() {
-               return array(
-                       array( 'mwstore://backend/container', 'mwstore://backend/container' ),
-                       array( 'mwstore://backend/container/', 'mwstore://backend/container' ),
-                       array( 'mwstore://backend/container/path', 'mwstore://backend/container/path' ),
-                       array( 'mwstore://backend/container//path', 'mwstore://backend/container/path' ),
-                       array( 'mwstore://backend/container///path', 'mwstore://backend/container/path' ),
-                       array( 'mwstore://backend/container///path//to///obj', 'mwstore://backend/container/path/to/obj',
-                       array( 'mwstore://', null ),
-                       array( 'mwstore://backend', null ),
-                       array( 'mwstore://backend//container/path', null ),
-                       array( 'mwstore://backend//container//path', null ),
-                       array( 'mwstore:///', null ),
-                       array( 'mwstore:/', null ),
-                       array( 'mwstore:', null ), )
-               );
-       }
-
-       /**
-        * @dataProvider provider_testParentStoragePath
-        */
-       public function testParentStoragePath( $path, $res ) {
-               $this->assertEquals( $res, FileBackend::parentStoragePath( $path ),
-                       "FileBackend::parentStoragePath on path '$path'" );
-       }
-
-       function provider_testParentStoragePath() {
-               return array(
-                       array( 'mwstore://backend/container/path/to/obj', 'mwstore://backend/container/path/to' ),
-                       array( 'mwstore://backend/container/path/to', 'mwstore://backend/container/path' ),
-                       array( 'mwstore://backend/container/path', 'mwstore://backend/container' ),
-                       array( 'mwstore://backend/container', null ),
-                       array( 'mwstore://backend/container/path/to/obj/', 'mwstore://backend/container/path/to' ),
-                       array( 'mwstore://backend/container/path/to/', 'mwstore://backend/container/path' ),
-                       array( 'mwstore://backend/container/path/', 'mwstore://backend/container' ),
-                       array( 'mwstore://backend/container/', null ),
-               );
-       }
-
-       /**
-        * @dataProvider provider_testExtensionFromPath
-        */
-       public function testExtensionFromPath( $path, $res ) {
-               $this->assertEquals( $res, FileBackend::extensionFromPath( $path ),
-                       "FileBackend::extensionFromPath on path '$path'" );
-       }
-
-       public static function provider_testExtensionFromPath() {
-               return array(
-                       array( 'mwstore://backend/container/path.txt', 'txt' ),
-                       array( 'mwstore://backend/container/path.svg.png', 'png' ),
-                       array( 'mwstore://backend/container/path', '' ),
-                       array( 'mwstore://backend/container/path.', '' ),
-               );
-       }
-
-       /**
-        * @dataProvider provider_testStore
-        */
-       public function testStore( $op ) {
-               $this->filesToPrune[] = $op['src'];
-
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestStore( $op );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestStore( $op );
-               $this->filesToPrune[] = $op['src']; # avoid file leaking
-               $this->tearDownFiles();
-       }
-
-       private function doTestStore( $op ) {
-               $backendName = $this->backendClass();
-
-               $source = $op['src'];
-               $dest = $op['dst'];
-               $this->prepare( array( 'dir' => dirname( $dest ) ) );
-
-               file_put_contents( $source, "Unit test file" );
-
-               if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
-                       $this->backend->store( $op );
-               }
-
-               $status = $this->backend->doOperation( $op );
-
-               $this->assertGoodStatus( $status,
-                       "Store from $source to $dest succeeded without warnings ($backendName)." );
-               $this->assertEquals( true, $status->isOK(),
-                       "Store from $source to $dest succeeded ($backendName)." );
-               $this->assertEquals( array( 0 => true ), $status->success,
-                       "Store from $source to $dest has proper 'success' field in Status ($backendName)." );
-               $this->assertEquals( true, file_exists( $source ),
-                       "Source file $source still exists ($backendName)." );
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
-                       "Destination file $dest exists ($backendName)." );
-
-               $this->assertEquals( filesize( $source ),
-                       $this->backend->getFileSize( array( 'src' => $dest ) ),
-                       "Destination file $dest has correct size ($backendName)." );
-
-               $props1 = FSFile::getPropsFromPath( $source );
-               $props2 = $this->backend->getFileProps( array( 'src' => $dest ) );
-               $this->assertEquals( $props1, $props2,
-                       "Source and destination have the same props ($backendName)." );
-
-               $this->assertBackendPathsConsistent( array( $dest ) );
-       }
-
-       public static function provider_testStore() {
-               $cases = array();
-
-               $tmpName = TempFSFile::factory( "unittests_", 'txt' )->getPath();
-               $toPath = self::baseStorePath() . '/unittest-cont1/e/fun/obj1.txt';
-               $op = array( 'op' => 'store', 'src' => $tmpName, 'dst' => $toPath );
-               $cases[] = array(
-                       $op, // operation
-                       $tmpName, // source
-                       $toPath, // dest
-               );
-
-               $op2 = $op;
-               $op2['overwrite'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $tmpName, // source
-                       $toPath, // dest
-               );
-
-               $op2 = $op;
-               $op2['overwriteSame'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $tmpName, // source
-                       $toPath, // dest
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testCopy
-        */
-       public function testCopy( $op ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestCopy( $op );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestCopy( $op );
-               $this->tearDownFiles();
-       }
-
-       private function doTestCopy( $op ) {
-               $backendName = $this->backendClass();
-
-               $source = $op['src'];
-               $dest = $op['dst'];
-               $this->prepare( array( 'dir' => dirname( $source ) ) );
-               $this->prepare( array( 'dir' => dirname( $dest ) ) );
-
-               if ( isset( $op['ignoreMissingSource'] ) ) {
-                       $status = $this->backend->doOperation( $op );
-                       $this->assertGoodStatus( $status,
-                               "Move from $source to $dest succeeded without warnings ($backendName)." );
-                       $this->assertEquals( array( 0 => true ), $status->success,
-                               "Move from $source to $dest has proper 'success' field in Status ($backendName)." );
-                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
-                               "Source file $source does not exist ($backendName)." );
-                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $dest ) ),
-                               "Destination file $dest does not exist ($backendName)." );
-                       return; // done
-               }
-
-               $status = $this->backend->doOperation(
-                       array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
-               $this->assertGoodStatus( $status,
-                       "Creation of file at $source succeeded ($backendName)." );
-
-               if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
-                       $this->backend->copy( $op );
-               }
-
-               $status = $this->backend->doOperation( $op );
-
-               $this->assertGoodStatus( $status,
-                       "Copy from $source to $dest succeeded without warnings ($backendName)." );
-               $this->assertEquals( true, $status->isOK(),
-                       "Copy from $source to $dest succeeded ($backendName)." );
-               $this->assertEquals( array( 0 => true ), $status->success,
-                       "Copy from $source to $dest has proper 'success' field in Status ($backendName)." );
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $source ) ),
-                       "Source file $source still exists ($backendName)." );
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
-                       "Destination file $dest exists after copy ($backendName)." );
-
-               $this->assertEquals(
-                       $this->backend->getFileSize( array( 'src' => $source ) ),
-                       $this->backend->getFileSize( array( 'src' => $dest ) ),
-                       "Destination file $dest has correct size ($backendName)." );
-
-               $props1 = $this->backend->getFileProps( array( 'src' => $source ) );
-               $props2 = $this->backend->getFileProps( array( 'src' => $dest ) );
-               $this->assertEquals( $props1, $props2,
-                       "Source and destination have the same props ($backendName)." );
-
-               $this->assertBackendPathsConsistent( array( $source, $dest ) );
-       }
-
-       public static function provider_testCopy() {
-               $cases = array();
-
-               $source = self::baseStorePath() . '/unittest-cont1/e/file.txt';
-               $dest = self::baseStorePath() . '/unittest-cont2/a/fileMoved.txt';
-
-               $op = array( 'op' => 'copy', 'src' => $source, 'dst' => $dest );
-               $cases[] = array(
-                       $op, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               $op2 = $op;
-               $op2['overwrite'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               $op2 = $op;
-               $op2['overwriteSame'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               $op2 = $op;
-               $op2['ignoreMissingSource'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testMove
-        */
-       public function testMove( $op ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestMove( $op );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestMove( $op );
-               $this->tearDownFiles();
-       }
-
-       private function doTestMove( $op ) {
-               $backendName = $this->backendClass();
-
-               $source = $op['src'];
-               $dest = $op['dst'];
-               $this->prepare( array( 'dir' => dirname( $source ) ) );
-               $this->prepare( array( 'dir' => dirname( $dest ) ) );
-
-               if ( isset( $op['ignoreMissingSource'] ) ) {
-                       $status = $this->backend->doOperation( $op );
-                       $this->assertGoodStatus( $status,
-                               "Move from $source to $dest succeeded without warnings ($backendName)." );
-                       $this->assertEquals( array( 0 => true ), $status->success,
-                               "Move from $source to $dest has proper 'success' field in Status ($backendName)." );
-                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
-                               "Source file $source does not exist ($backendName)." );
-                       $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $dest ) ),
-                               "Destination file $dest does not exist ($backendName)." );
-                       return; // done
-               }
-
-               $status = $this->backend->doOperation(
-                       array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
-               $this->assertGoodStatus( $status,
-                       "Creation of file at $source succeeded ($backendName)." );
-
-               if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
-                       $this->backend->copy( $op );
-               }
-
-               $status = $this->backend->doOperation( $op );
-               $this->assertGoodStatus( $status,
-                       "Move from $source to $dest succeeded without warnings ($backendName)." );
-               $this->assertEquals( true, $status->isOK(),
-                       "Move from $source to $dest succeeded ($backendName)." );
-               $this->assertEquals( array( 0 => true ), $status->success,
-                       "Move from $source to $dest has proper 'success' field in Status ($backendName)." );
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
-                       "Source file $source does not still exists ($backendName)." );
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
-                       "Destination file $dest exists after move ($backendName)." );
-
-               $this->assertNotEquals(
-                       $this->backend->getFileSize( array( 'src' => $source ) ),
-                       $this->backend->getFileSize( array( 'src' => $dest ) ),
-                       "Destination file $dest has correct size ($backendName)." );
-
-               $props1 = $this->backend->getFileProps( array( 'src' => $source ) );
-               $props2 = $this->backend->getFileProps( array( 'src' => $dest ) );
-               $this->assertEquals( false, $props1['fileExists'],
-                       "Source file does not exist accourding to props ($backendName)." );
-               $this->assertEquals( true, $props2['fileExists'],
-                       "Destination file exists accourding to props ($backendName)." );
-
-               $this->assertBackendPathsConsistent( array( $source, $dest ) );
-       }
-
-       public static function provider_testMove() {
-               $cases = array();
-
-               $source = self::baseStorePath() . '/unittest-cont1/e/file.txt';
-               $dest = self::baseStorePath() . '/unittest-cont2/a/fileMoved.txt';
-
-               $op = array( 'op' => 'move', 'src' => $source, 'dst' => $dest );
-               $cases[] = array(
-                       $op, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               $op2 = $op;
-               $op2['overwrite'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               $op2 = $op;
-               $op2['overwriteSame'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               $op2 = $op;
-               $op2['ignoreMissingSource'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       $source, // source
-                       $dest, // dest
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testDelete
-        */
-       public function testDelete( $op, $withSource, $okStatus ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestDelete( $op, $withSource, $okStatus );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestDelete( $op, $withSource, $okStatus );
-               $this->tearDownFiles();
-       }
-
-       private function doTestDelete( $op, $withSource, $okStatus ) {
-               $backendName = $this->backendClass();
-
-               $source = $op['src'];
-               $this->prepare( array( 'dir' => dirname( $source ) ) );
-
-               if ( $withSource ) {
-                       $status = $this->backend->doOperation(
-                               array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $source succeeded ($backendName)." );
-               }
-
-               $status = $this->backend->doOperation( $op );
-               if ( $okStatus ) {
-                       $this->assertGoodStatus( $status,
-                               "Deletion of file at $source succeeded without warnings ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Deletion of file at $source succeeded ($backendName)." );
-                       $this->assertEquals( array( 0 => true ), $status->success,
-                               "Deletion of file at $source has proper 'success' field in Status ($backendName)." );
-               } else {
-                       $this->assertEquals( false, $status->isOK(),
-                               "Deletion of file at $source failed ($backendName)." );
-               }
-
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $source ) ),
-                       "Source file $source does not exist after move ($backendName)." );
-
-               $this->assertFalse(
-                       $this->backend->getFileSize( array( 'src' => $source ) ),
-                       "Source file $source has correct size (false) ($backendName)." );
-
-               $props1 = $this->backend->getFileProps( array( 'src' => $source ) );
-               $this->assertFalse( $props1['fileExists'],
-                       "Source file $source does not exist according to props ($backendName)." );
-
-               $this->assertBackendPathsConsistent( array( $source ) );
-       }
-
-       public static function provider_testDelete() {
-               $cases = array();
-
-               $source = self::baseStorePath() . '/unittest-cont1/e/myfacefile.txt';
-
-               $op = array( 'op' => 'delete', 'src' => $source );
-               $cases[] = array(
-                       $op, // operation
-                       true, // with source
-                       true // succeeds
-               );
-
-               $cases[] = array(
-                       $op, // operation
-                       false, // without source
-                       false // fails
-               );
-
-               $op['ignoreMissingSource'] = true;
-               $cases[] = array(
-                       $op, // operation
-                       false, // without source
-                       true // succeeds
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testCreate
-        */
-       public function testCreate( $op, $alreadyExists, $okStatus, $newSize ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestCreate( $op, $alreadyExists, $okStatus, $newSize );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestCreate( $op, $alreadyExists, $okStatus, $newSize );
-               $this->tearDownFiles();
-       }
-
-       private function doTestCreate( $op, $alreadyExists, $okStatus, $newSize ) {
-               $backendName = $this->backendClass();
-
-               $dest = $op['dst'];
-               $this->prepare( array( 'dir' => dirname( $dest ) ) );
-
-               $oldText = 'blah...blah...waahwaah';
-               if ( $alreadyExists ) {
-                       $status = $this->backend->doOperation(
-                               array( 'op' => 'create', 'content' => $oldText, 'dst' => $dest ) );
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $dest succeeded ($backendName)." );
-               }
-
-               $status = $this->backend->doOperation( $op );
-               if ( $okStatus ) {
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $dest succeeded without warnings ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Creation of file at $dest succeeded ($backendName)." );
-                       $this->assertEquals( array( 0 => true ), $status->success,
-                               "Creation of file at $dest has proper 'success' field in Status ($backendName)." );
-               } else {
-                       $this->assertEquals( false, $status->isOK(),
-                               "Creation of file at $dest failed ($backendName)." );
-               }
-
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $dest ) ),
-                       "Destination file $dest exists after creation ($backendName)." );
-
-               $props1 = $this->backend->getFileProps( array( 'src' => $dest ) );
-               $this->assertEquals( true, $props1['fileExists'],
-                       "Destination file $dest exists according to props ($backendName)." );
-               if ( $okStatus ) { // file content is what we saved
-                       $this->assertEquals( $newSize, $props1['size'],
-                               "Destination file $dest has expected size according to props ($backendName)." );
-                       $this->assertEquals( $newSize,
-                               $this->backend->getFileSize( array( 'src' => $dest ) ),
-                               "Destination file $dest has correct size ($backendName)." );
-               } else { // file content is some other previous text
-                       $this->assertEquals( strlen( $oldText ), $props1['size'],
-                               "Destination file $dest has original size according to props ($backendName)." );
-                       $this->assertEquals( strlen( $oldText ),
-                               $this->backend->getFileSize( array( 'src' => $dest ) ),
-                               "Destination file $dest has original size according to props ($backendName)." );
-               }
-
-               $this->assertBackendPathsConsistent( array( $dest ) );
-       }
-
-       /**
-        * @dataProvider provider_testCreate
-        */
-       public static function provider_testCreate() {
-               $cases = array();
-
-               $dest = self::baseStorePath() . '/unittest-cont2/a/myspacefile.txt';
-
-               $op = array( 'op' => 'create', 'content' => 'test test testing', 'dst' => $dest );
-               $cases[] = array(
-                       $op, // operation
-                       false, // no dest already exists
-                       true, // succeeds
-                       strlen( $op['content'] )
-               );
-
-               $op2 = $op;
-               $op2['content'] = "\n";
-               $cases[] = array(
-                       $op2, // operation
-                       false, // no dest already exists
-                       true, // succeeds
-                       strlen( $op2['content'] )
-               );
-
-               $op2 = $op;
-               $op2['content'] = "fsf\n waf 3kt";
-               $cases[] = array(
-                       $op2, // operation
-                       true, // dest already exists
-                       false, // fails
-                       strlen( $op2['content'] )
-               );
-
-               $op2 = $op;
-               $op2['content'] = "egm'g gkpe gpqg eqwgwqg";
-               $op2['overwrite'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       true, // dest already exists
-                       true, // succeeds
-                       strlen( $op2['content'] )
-               );
-
-               $op2 = $op;
-               $op2['content'] = "39qjmg3-qg";
-               $op2['overwriteSame'] = true;
-               $cases[] = array(
-                       $op2, // operation
-                       true, // dest already exists
-                       false, // succeeds
-                       strlen( $op2['content'] )
-               );
-
-               return $cases;
-       }
-
-       public function testDoQuickOperations() {
-               $this->backend = $this->singleBackend;
-               $this->doTestDoQuickOperations();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->doTestDoQuickOperations();
-               $this->tearDownFiles();
-       }
-
-       private function doTestDoQuickOperations() {
-               $backendName = $this->backendClass();
-
-               $base = self::baseStorePath();
-               $files = array(
-                       "$base/unittest-cont1/e/fileA.a",
-                       "$base/unittest-cont1/e/fileB.a",
-                       "$base/unittest-cont1/e/fileC.a"
-               );
-               $ops = array();
-               $purgeOps = array();
-               foreach ( $files as $path ) {
-                       $status = $this->prepare( array( 'dir' => dirname( $path ) ) );
-                       $this->assertGoodStatus( $status,
-                               "Preparing $path succeeded without warnings ($backendName)." );
-                       $ops[] = array( 'op' => 'create', 'dst' => $path, 'content' => mt_rand(0,50000) );
-                       $purgeOps[] = array( 'op' => 'delete', 'src' => $path );
-               }
-               $purgeOps[] = array( 'op' => 'null' );
-               $status = $this->backend->doQuickOperations( $ops );
-               $this->assertGoodStatus( $status,
-                       "Creation of source files succeeded ($backendName)." );
-
-               foreach ( $files as $file ) {
-                       $this->assertTrue( $this->backend->fileExists( array( 'src' => $file ) ),
-                               "File $file exists." );
-               }
-
-               $status = $this->backend->doQuickOperations( $purgeOps );
-               $this->assertGoodStatus( $status,
-                       "Quick deletion of source files succeeded ($backendName)." );
-
-               foreach ( $files as $file ) {
-                       $this->assertFalse( $this->backend->fileExists( array( 'src' => $file ) ),
-                               "File $file purged." );
-               }
-       }
-
-       /**
-        * @dataProvider provider_testConcatenate
-        */
-       public function testConcatenate( $op, $srcs, $srcsContent, $alreadyExists, $okStatus ) {
-               $this->filesToPrune[] = $op['dst'];
-
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestConcatenate( $op, $srcs, $srcsContent, $alreadyExists, $okStatus );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestConcatenate( $op, $srcs, $srcsContent, $alreadyExists, $okStatus );
-               $this->filesToPrune[] = $op['dst']; # avoid file leaking
-               $this->tearDownFiles();
-       }
-
-       private function doTestConcatenate( $params, $srcs, $srcsContent, $alreadyExists, $okStatus ) {
-               $backendName = $this->backendClass();
-
-               $expContent = '';
-               // Create sources
-               $ops = array();
-               foreach ( $srcs as $i => $source ) {
-                       $this->prepare( array( 'dir' => dirname( $source ) ) );
-                       $ops[] = array(
-                               'op'      => 'create', // operation
-                               'dst'     => $source, // source
-                               'content' => $srcsContent[$i]
-                       );
-                       $expContent .= $srcsContent[$i];
-               }
-               $status = $this->backend->doOperations( $ops );
-
-               $this->assertGoodStatus( $status,
-                       "Creation of source files succeeded ($backendName)." );
-
-               $dest = $params['dst'];
-               if ( $alreadyExists ) {
-                       $ok = file_put_contents( $dest, 'blah...blah...waahwaah' ) !== false;
-                       $this->assertEquals( true, $ok,
-                               "Creation of file at $dest succeeded ($backendName)." );
-               } else {
-                       $ok = file_put_contents( $dest, '' ) !== false;
-                       $this->assertEquals( true, $ok,
-                               "Creation of 0-byte file at $dest succeeded ($backendName)." );
-               }
-
-               // Combine the files into one
-               $status = $this->backend->concatenate( $params );
-               if ( $okStatus ) {
-                       $this->assertGoodStatus( $status,
-                               "Creation of concat file at $dest succeeded without warnings ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Creation of concat file at $dest succeeded ($backendName)." );
-               } else {
-                       $this->assertEquals( false, $status->isOK(),
-                               "Creation of concat file at $dest failed ($backendName)." );
-               }
-
-               if ( $okStatus ) {
-                       $this->assertEquals( true, is_file( $dest ),
-                               "Dest concat file $dest exists after creation ($backendName)." );
-               } else {
-                       $this->assertEquals( true, is_file( $dest ),
-                               "Dest concat file $dest exists after failed creation ($backendName)." );
-               }
-
-               $contents = file_get_contents( $dest );
-               $this->assertNotEquals( false, $contents, "File at $dest exists ($backendName)." );
-
-               if ( $okStatus ) {
-                       $this->assertEquals( $expContent, $contents,
-                               "Concat file at $dest has correct contents ($backendName)." );
-               } else {
-                       $this->assertNotEquals( $expContent, $contents,
-                               "Concat file at $dest has correct contents ($backendName)." );
-               }
-       }
-
-       function provider_testConcatenate() {
-               $cases = array();
-
-               $rand = mt_rand( 0, 2000000000 ) . time();
-               $dest = wfTempDir() . "/randomfile!$rand.txt";
-               $srcs = array(
-                       self::baseStorePath() . '/unittest-cont1/e/file1.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file2.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file3.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file4.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file5.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file6.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file7.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file8.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file9.txt',
-                       self::baseStorePath() . '/unittest-cont1/e/file10.txt'
-               );
-               $content = array(
-                       'egfage',
-                       'ageageag',
-                       'rhokohlr',
-                       'shgmslkg',
-                       'kenga',
-                       'owagmal',
-                       'kgmae',
-                       'g eak;g',
-                       'lkaem;a',
-                       'legma'
-               );
-               $params = array( 'srcs' => $srcs, 'dst' => $dest );
-
-               $cases[] = array(
-                       $params, // operation
-                       $srcs, // sources
-                       $content, // content for each source
-                       false, // no dest already exists
-                       true, // succeeds
-               );
-
-               $cases[] = array(
-                       $params, // operation
-                       $srcs, // sources
-                       $content, // content for each source
-                       true, // dest already exists
-                       false, // succeeds
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testGetFileStat
-        */
-       public function testGetFileStat( $path, $content, $alreadyExists ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetFileStat( $path, $content, $alreadyExists );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetFileStat( $path, $content, $alreadyExists );
-               $this->tearDownFiles();
-       }
-
-       private function doTestGetFileStat( $path, $content, $alreadyExists ) {
-               $backendName = $this->backendClass();
-
-               if ( $alreadyExists ) {
-                       $this->prepare( array( 'dir' => dirname( $path ) ) );
-                       $status = $this->create( array( 'dst' => $path, 'content' => $content ) );
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $path succeeded ($backendName)." );
-
-                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
-                       $time = $this->backend->getFileTimestamp( array( 'src' => $path ) );
-                       $stat = $this->backend->getFileStat( array( 'src' => $path ) );
-
-                       $this->assertEquals( strlen( $content ), $size,
-                               "Correct file size of '$path'" );
-                       $this->assertTrue( abs( time() - wfTimestamp( TS_UNIX, $time ) ) < 10,
-                               "Correct file timestamp of '$path'" );
-
-                       $size = $stat['size'];
-                       $time = $stat['mtime'];
-                       $this->assertEquals( strlen( $content ), $size,
-                               "Correct file size of '$path'" );
-                       $this->assertTrue( abs( time() - wfTimestamp( TS_UNIX, $time ) ) < 10,
-                               "Correct file timestamp of '$path'" );
-
-                       $this->backend->clearCache( array( $path ) );
-
-                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
-
-                       $this->assertEquals( strlen( $content ), $size,
-                               "Correct file size of '$path'" );
-
-                       $this->backend->preloadCache( array( $path ) );
-
-                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
-
-                       $this->assertEquals( strlen( $content ), $size,
-                               "Correct file size of '$path'" );
-               } else {
-                       $size = $this->backend->getFileSize( array( 'src' => $path ) );
-                       $time = $this->backend->getFileTimestamp( array( 'src' => $path ) );
-                       $stat = $this->backend->getFileStat( array( 'src' => $path ) );
-
-                       $this->assertFalse( $size, "Correct file size of '$path'" );
-                       $this->assertFalse( $time, "Correct file timestamp of '$path'" );
-                       $this->assertFalse( $stat, "Correct file stat of '$path'" );
-               }
-       }
-
-       function provider_testGetFileStat() {
-               $cases = array();
-
-               $base = self::baseStorePath();
-               $cases[] = array( "$base/unittest-cont1/e/b/z/some_file.txt", "some file contents", true );
-               $cases[] = array( "$base/unittest-cont1/e/b/some-other_file.txt", "", true );
-               $cases[] = array( "$base/unittest-cont1/e/b/some-diff_file.txt", null, false );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testGetFileContents
-        */
-       public function testGetFileContents( $source, $content ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetFileContents( $source, $content );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetFileContents( $source, $content );
-               $this->tearDownFiles();
-       }
-
-       private function doTestGetFileContents( $source, $content ) {
-               $backendName = $this->backendClass();
-
-               $srcs = (array)$source;
-               $content = (array)$content;
-               foreach ( $srcs as $i => $src ) {
-                       $this->prepare( array( 'dir' => dirname( $src ) ) );
-                       $status = $this->backend->doOperation(
-                               array( 'op' => 'create', 'content' => $content[$i], 'dst' => $src ) );
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $src succeeded ($backendName)." );
-               }
-
-               if ( is_array( $source ) ) {
-                       $contents = $this->backend->getFileContentsMulti( array( 'srcs' => $source ) );
-                       foreach ( $contents as $path => $data ) {
-                               $this->assertNotEquals( false, $data, "Contents of $path exists ($backendName)." );
-                               $this->assertEquals( current( $content ), $data, "Contents of $path is correct ($backendName)." );
-                               next( $content );
-                       }
-                       $this->assertEquals( $source, array_keys( $contents ), "Contents in right order ($backendName)." );
-                       $this->assertEquals( count( $source ), count( $contents ), "Contents array size correct ($backendName)." );
-               } else {
-                       $data = $this->backend->getFileContents( array( 'src' => $source ) );
-                       $this->assertNotEquals( false, $data, "Contents of $source exists ($backendName)." );
-                       $this->assertEquals( $content[0], $data, "Contents of $source is correct ($backendName)." );
-               }
-       }
-
-       function provider_testGetFileContents() {
-               $cases = array();
-
-               $base = self::baseStorePath();
-               $cases[] = array( "$base/unittest-cont1/e/b/z/some_file.txt", "some file contents" );
-               $cases[] = array( "$base/unittest-cont1/e/b/some-other_file.txt", "more file contents" );
-               $cases[] = array(
-                       array( "$base/unittest-cont1/e/a/x.txt", "$base/unittest-cont1/e/a/y.txt",
-                                "$base/unittest-cont1/e/a/z.txt" ),
-                       array( "contents xx", "contents xy", "contents xz" )
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testGetLocalCopy
-        */
-       public function testGetLocalCopy( $source, $content ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetLocalCopy( $source, $content );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetLocalCopy( $source, $content );
-               $this->tearDownFiles();
-       }
-
-       private function doTestGetLocalCopy( $source, $content ) {
-               $backendName = $this->backendClass();
-
-               $srcs = (array)$source;
-               $content = (array)$content;
-               foreach ( $srcs as $i => $src ) {
-                       $this->prepare( array( 'dir' => dirname( $src ) ) );
-                       $status = $this->backend->doOperation(
-                               array( 'op' => 'create', 'content' => $content[$i], 'dst' => $src ) );
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $src succeeded ($backendName)." );
-               }
-
-               if ( is_array( $source ) ) {
-                       $tmpFiles = $this->backend->getLocalCopyMulti( array( 'srcs' => $source ) );
-                       foreach ( $tmpFiles as $path => $tmpFile ) {
-                               $this->assertNotNull( $tmpFile,
-                                       "Creation of local copy of $path succeeded ($backendName)." );
-                               $contents = file_get_contents( $tmpFile->getPath() );
-                               $this->assertNotEquals( false, $contents, "Local copy of $path exists ($backendName)." );
-                               $this->assertEquals( current( $content ), $contents, "Local copy of $path is correct ($backendName)." );
-                               next( $content );
-                       }
-                       $this->assertEquals( $source, array_keys( $tmpFiles ), "Local copies in right order ($backendName)." );
-                       $this->assertEquals( count( $source ), count( $tmpFiles ), "Local copies array size correct ($backendName)." );
-               } else {
-                       $tmpFile = $this->backend->getLocalCopy( array( 'src' => $source ) );
-                       $this->assertNotNull( $tmpFile,
-                               "Creation of local copy of $source succeeded ($backendName)." );
-                       $contents = file_get_contents( $tmpFile->getPath() );
-                       $this->assertNotEquals( false, $contents, "Local copy of $source exists ($backendName)." );
-                       $this->assertEquals( $content[0], $contents, "Local copy of $source is correct ($backendName)." );
-               }
-
-               $obj = new stdClass();
-               $tmpFile->bind( $obj );
-       }
-
-       function provider_testGetLocalCopy() {
-               $cases = array();
-
-               $base = self::baseStorePath();
-               $cases[] = array( "$base/unittest-cont1/e/a/z/some_file.txt", "some file contents" );
-               $cases[] = array( "$base/unittest-cont1/e/a/some-other_file.txt", "more file contents" );
-               $cases[] = array( "$base/unittest-cont1/e/a/\$odd&.txt", "test file contents" );
-               $cases[] = array(
-                       array( "$base/unittest-cont1/e/a/x.txt", "$base/unittest-cont1/e/a/y.txt",
-                                "$base/unittest-cont1/e/a/z.txt" ),
-                       array( "contents xx", "contents xy", "contents xz" )
-               );
-
-               return $cases;
-       }
-
-       /**
-        * @dataProvider provider_testGetLocalReference
-        */
-       public function testGetLocalReference( $source, $content ) {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetLocalReference( $source, $content );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetLocalReference( $source, $content );
-               $this->tearDownFiles();
-       }
-
-       private function doTestGetLocalReference( $source, $content ) {
-               $backendName = $this->backendClass();
-
-               $srcs = (array)$source;
-               $content = (array)$content;
-               foreach ( $srcs as $i => $src ) {
-                       $this->prepare( array( 'dir' => dirname( $src ) ) );
-                       $status = $this->backend->doOperation(
-                               array( 'op' => 'create', 'content' => $content[$i], 'dst' => $src ) );
-                       $this->assertGoodStatus( $status,
-                               "Creation of file at $src succeeded ($backendName)." );
-               }
-
-               if ( is_array( $source ) ) {
-                       $tmpFiles = $this->backend->getLocalReferenceMulti( array( 'srcs' => $source ) );
-                       foreach ( $tmpFiles as $path => $tmpFile ) {
-                               $this->assertNotNull( $tmpFile,
-                                       "Creation of local copy of $path succeeded ($backendName)." );
-                               $contents = file_get_contents( $tmpFile->getPath() );
-                               $this->assertNotEquals( false, $contents, "Local ref of $path exists ($backendName)." );
-                               $this->assertEquals( current( $content ), $contents, "Local ref of $path is correct ($backendName)." );
-                               next( $content );
-                       }
-                       $this->assertEquals( $source, array_keys( $tmpFiles ), "Local refs in right order ($backendName)." );
-                       $this->assertEquals( count( $source ), count( $tmpFiles ), "Local refs array size correct ($backendName)." );
-               } else {
-                       $tmpFile = $this->backend->getLocalReference( array( 'src' => $source ) );
-                       $this->assertNotNull( $tmpFile,
-                               "Creation of local copy of $source succeeded ($backendName)." );
-                       $contents = file_get_contents( $tmpFile->getPath() );
-                       $this->assertNotEquals( false, $contents, "Local ref of $source exists ($backendName)." );
-                       $this->assertEquals( $content[0], $contents, "Local ref of $source is correct ($backendName)." );
-               }
-       }
-
-       function provider_testGetLocalReference() {
-               $cases = array();
-
-               $base = self::baseStorePath();
-               $cases[] = array( "$base/unittest-cont1/e/a/z/some_file.txt", "some file contents" );
-               $cases[] = array( "$base/unittest-cont1/e/a/some-other_file.txt", "more file contents" );
-               $cases[] = array( "$base/unittest-cont1/e/a/\$odd&.txt", "test file contents" );
-               $cases[] = array(
-                       array( "$base/unittest-cont1/e/a/x.txt", "$base/unittest-cont1/e/a/y.txt",
-                                "$base/unittest-cont1/e/a/z.txt" ),
-                       array( "contents xx", "contents xy", "contents xz" )
-               );
-
-               return $cases;
-       }
-
-       public function testGetLocalCopyAndReference404() {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetLocalCopyAndReference404();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetLocalCopyAndReference404();
-               $this->tearDownFiles();
-       }
-
-       public function doTestGetLocalCopyAndReference404() {
-               $backendName = $this->backendClass();
-
-               $base = self::baseStorePath();
-
-               $tmpFile = $this->backend->getLocalCopy( array(
-                       'src' => "$base/unittest-cont1/not-there" ) );
-               $this->assertEquals( null, $tmpFile, "Local copy of not existing file is null ($backendName)." );
-
-               $tmpFile = $this->backend->getLocalReference( array(
-                       'src' => "$base/unittest-cont1/not-there" ) );
-               $this->assertEquals( null, $tmpFile, "Local ref of not existing file is null ($backendName)." );
-       }
-
-       /**
-        * @dataProvider provider_testPrepareAndClean
-        */
-       public function testPrepareAndClean( $path, $isOK ) {
-               $this->backend = $this->singleBackend;
-               $this->doTestPrepareAndClean( $path, $isOK );
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->doTestPrepareAndClean( $path, $isOK );
-               $this->tearDownFiles();
-       }
-
-       function provider_testPrepareAndClean() {
-               $base = self::baseStorePath();
-               return array(
-                       array( "$base/unittest-cont1/e/a/z/some_file1.txt", true ),
-                       array( "$base/unittest-cont2/a/z/some_file2.txt", true ),
-                       # Specific to FS backend with no basePath field set
-                       #array( "$base/unittest-cont3/a/z/some_file3.txt", false ),
-               );
-       }
-
-       private function doTestPrepareAndClean( $path, $isOK ) {
-               $backendName = $this->backendClass();
-
-               $status = $this->prepare( array( 'dir' => dirname( $path ) ) );
-               if ( $isOK ) {
-                       $this->assertGoodStatus( $status,
-                               "Preparing dir $path succeeded without warnings ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Preparing dir $path succeeded ($backendName)." );
-               } else {
-                       $this->assertEquals( false, $status->isOK(),
-                               "Preparing dir $path failed ($backendName)." );
-               }
-
-               $status = $this->backend->clean( array( 'dir' => dirname( $path ) ) );
-               if ( $isOK ) {
-                       $this->assertGoodStatus( $status,
-                               "Cleaning dir $path succeeded without warnings ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Cleaning dir $path succeeded ($backendName)." );
-               } else {
-                       $this->assertEquals( false, $status->isOK(),
-                               "Cleaning dir $path failed ($backendName)." );
-               }
-       }
-
-       public function testRecursiveClean() {
-               $this->backend = $this->singleBackend;
-               $this->doTestRecursiveClean();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->doTestRecursiveClean();
-               $this->tearDownFiles();
-       }
-
-       private function doTestRecursiveClean() {
-               $backendName = $this->backendClass();
-
-               $base = self::baseStorePath();
-               $dirs = array(
-                       "$base/unittest-cont1/e/a",
-                       "$base/unittest-cont1/e/a/b",
-                       "$base/unittest-cont1/e/a/b/c",
-                       "$base/unittest-cont1/e/a/b/c/d0",
-                       "$base/unittest-cont1/e/a/b/c/d1",
-                       "$base/unittest-cont1/e/a/b/c/d2",
-                       "$base/unittest-cont1/e/a/b/c/d0/1",
-                       "$base/unittest-cont1/e/a/b/c/d0/2",
-                       "$base/unittest-cont1/e/a/b/c/d1/3",
-                       "$base/unittest-cont1/e/a/b/c/d1/4",
-                       "$base/unittest-cont1/e/a/b/c/d2/5",
-                       "$base/unittest-cont1/e/a/b/c/d2/6"
-               );
-               foreach ( $dirs as $dir ) {
-                       $status = $this->prepare( array( 'dir' => $dir ) );
-                       $this->assertGoodStatus( $status,
-                               "Preparing dir $dir succeeded without warnings ($backendName)." );
-               }
-
-               if ( $this->backend instanceof FSFileBackend ) {
-                       foreach ( $dirs as $dir ) {
-                               $this->assertEquals( true, $this->backend->directoryExists( array( 'dir' => $dir ) ),
-                                       "Dir $dir exists ($backendName)." );
-                       }
-               }
-
-               $status = $this->backend->clean(
-                       array( 'dir' => "$base/unittest-cont1", 'recursive' => 1 ) );
-               $this->assertGoodStatus( $status,
-                       "Recursive cleaning of dir $dir succeeded without warnings ($backendName)." );
-
-               foreach ( $dirs as $dir ) {
-                       $this->assertEquals( false, $this->backend->directoryExists( array( 'dir' => $dir ) ),
-                               "Dir $dir no longer exists ($backendName)." );
-               }
-       }
-
-       // @TODO: testSecure
-
-       public function testDoOperations() {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestDoOperations();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestDoOperations();
-               $this->tearDownFiles();
-       }
-
-       private function doTestDoOperations() {
-               $base = self::baseStorePath();
-
-               $fileA = "$base/unittest-cont1/e/a/b/fileA.txt";
-               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
-               $fileB = "$base/unittest-cont1/e/a/b/fileB.txt";
-               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
-               $fileC = "$base/unittest-cont1/e/a/b/fileC.txt";
-               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
-               $fileD = "$base/unittest-cont1/e/a/b/fileD.txt";
-
-               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
-               $this->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
-               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
-               $this->create( array( 'dst' => $fileB, 'content' => $fileBContents ) );
-               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
-               $this->create( array( 'dst' => $fileC, 'content' => $fileCContents ) );
-               $this->prepare( array( 'dir' => dirname( $fileD ) ) );
-
-               $status = $this->backend->doOperations( array(
-                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD, 'overwrite' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<empty>, D:<A>
-                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC ),
-                       // Now: A:<A>, B:<empty>, C:<B>, D:<A>
-                       array( 'op' => 'move', 'src' => $fileD, 'dst' => $fileA, 'overwriteSame' => 1 ),
-                       // Now: A:<A>, B:<empty>, C:<B>, D:<empty>
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileA, 'overwrite' => 1 ),
-                       // Now: A:<B>, B:<empty>, C:<empty>, D:<empty>
-                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC ),
-                       // Now: A:<B>, B:<empty>, C:<B>, D:<empty>
-                       array( 'op' => 'move', 'src' => $fileA, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Now: A:<empty>, B:<empty>, C:<B>, D:<empty>
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'null' ),
-                       // Does nothing
-               ) );
-
-               $this->assertGoodStatus( $status, "Operation batch succeeded" );
-               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
-               $this->assertEquals( 13, count( $status->success ),
-                       "Operation batch has correct success array" );
-
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileA ) ),
-                       "File does not exist at $fileA" );
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
-                       "File does not exist at $fileB" );
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
-                       "File does not exist at $fileD" );
-
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
-                       "File exists at $fileC" );
-               $this->assertEquals( $fileBContents,
-                       $this->backend->getFileContents( array( 'src' => $fileC ) ),
-                       "Correct file contents of $fileC" );
-               $this->assertEquals( strlen( $fileBContents ),
-                       $this->backend->getFileSize( array( 'src' => $fileC ) ),
-                       "Correct file size of $fileC" );
-               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
-                       $this->backend->getFileSha1Base36( array( 'src' => $fileC ) ),
-                       "Correct file SHA-1 of $fileC" );
-       }
-
-       public function testDoOperationsPipeline() {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestDoOperationsPipeline();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestDoOperationsPipeline();
-               $this->tearDownFiles();
-       }
-
-       // concurrency orientated
-       private function doTestDoOperationsPipeline() {
-               $base = self::baseStorePath();
-
-               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
-               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
-               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
-
-               $tmpNameA = TempFSFile::factory( "unittests_", 'txt' )->getPath();
-               file_put_contents( $tmpNameA, $fileAContents );
-               $tmpNameB = TempFSFile::factory( "unittests_", 'txt' )->getPath();
-               file_put_contents( $tmpNameB, $fileBContents );
-               $tmpNameC = TempFSFile::factory( "unittests_", 'txt' )->getPath();
-               file_put_contents( $tmpNameC, $fileCContents );
-
-               $this->filesToPrune[] = $tmpNameA; # avoid file leaking
-               $this->filesToPrune[] = $tmpNameB; # avoid file leaking
-               $this->filesToPrune[] = $tmpNameC; # avoid file leaking
-
-               $fileA = "$base/unittest-cont1/e/a/b/fileA.txt";
-               $fileB = "$base/unittest-cont1/e/a/b/fileB.txt";
-               $fileC = "$base/unittest-cont1/e/a/b/fileC.txt";
-               $fileD = "$base/unittest-cont1/e/a/b/fileD.txt";
-
-               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
-               $this->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
-               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
-               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
-               $this->prepare( array( 'dir' => dirname( $fileD ) ) );
-
-               $status = $this->backend->doOperations( array(
-                       array( 'op' => 'store', 'src' => $tmpNameA, 'dst' => $fileA, 'overwriteSame' => 1 ),
-                       array( 'op' => 'store', 'src' => $tmpNameB, 'dst' => $fileB, 'overwrite' => 1 ),
-                       array( 'op' => 'store', 'src' => $tmpNameC, 'dst' => $fileC, 'overwrite' => 1 ),
-                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD, 'overwrite' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<empty>, D:<A>
-                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC ),
-                       // Now: A:<A>, B:<empty>, C:<B>, D:<A>
-                       array( 'op' => 'move', 'src' => $fileD, 'dst' => $fileA, 'overwriteSame' => 1 ),
-                       // Now: A:<A>, B:<empty>, C:<B>, D:<empty>
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileA, 'overwrite' => 1 ),
-                       // Now: A:<B>, B:<empty>, C:<empty>, D:<empty>
-                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC ),
-                       // Now: A:<B>, B:<empty>, C:<B>, D:<empty>
-                       array( 'op' => 'move', 'src' => $fileA, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Now: A:<empty>, B:<empty>, C:<B>, D:<empty>
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Does nothing
-                       array( 'op' => 'null' ),
-                       // Does nothing
-               ) );
-
-               $this->assertGoodStatus( $status, "Operation batch succeeded" );
-               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
-               $this->assertEquals( 16, count( $status->success ),
-                       "Operation batch has correct success array" );
-
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileA ) ),
-                       "File does not exist at $fileA" );
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
-                       "File does not exist at $fileB" );
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
-                       "File does not exist at $fileD" );
-
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
-                       "File exists at $fileC" );
-               $this->assertEquals( $fileBContents,
-                       $this->backend->getFileContents( array( 'src' => $fileC ) ),
-                       "Correct file contents of $fileC" );
-               $this->assertEquals( strlen( $fileBContents ),
-                       $this->backend->getFileSize( array( 'src' => $fileC ) ),
-                       "Correct file size of $fileC" );
-               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
-                       $this->backend->getFileSha1Base36( array( 'src' => $fileC ) ),
-                       "Correct file SHA-1 of $fileC" );
-       }
-
-       public function testDoOperationsFailing() {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestDoOperationsFailing();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestDoOperationsFailing();
-               $this->tearDownFiles();
-       }
-
-       private function doTestDoOperationsFailing() {
-               $base = self::baseStorePath();
-
-               $fileA = "$base/unittest-cont2/a/b/fileA.txt";
-               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
-               $fileB = "$base/unittest-cont2/a/b/fileB.txt";
-               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
-               $fileC = "$base/unittest-cont2/a/b/fileC.txt";
-               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
-               $fileD = "$base/unittest-cont2/a/b/fileD.txt";
-
-               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
-               $this->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
-               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
-               $this->create( array( 'dst' => $fileB, 'content' => $fileBContents ) );
-               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
-               $this->create( array( 'dst' => $fileC, 'content' => $fileCContents ) );
-
-               $status = $this->backend->doOperations( array(
-                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
-                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
-                       array( 'op' => 'copy', 'src' => $fileB, 'dst' => $fileD, 'overwrite' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<B>
-                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (failed)
-                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC, 'overwriteSame' => 1 ),
-                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (failed)
-                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileA, 'overwrite' => 1 ),
-                       // Now: A:<B>, B:<empty>, C:<A>, D:<empty>
-                       array( 'op' => 'delete', 'src' => $fileD ),
-                       // Now: A:<B>, B:<empty>, C:<A>, D:<empty>
-                       array( 'op' => 'null' ),
-                       // Does nothing
-               ), array( 'force' => 1 ) );
-
-               $this->assertNotEquals( array(), $status->errors, "Operation had warnings" );
-               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
-               $this->assertEquals( 8, count( $status->success ),
-                       "Operation batch has correct success array" );
-
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
-                       "File does not exist at $fileB" );
-               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
-                       "File does not exist at $fileD" );
-
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileA ) ),
-                       "File does not exist at $fileA" );
-               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
-                       "File exists at $fileC" );
-               $this->assertEquals( $fileBContents,
-                       $this->backend->getFileContents( array( 'src' => $fileA ) ),
-                       "Correct file contents of $fileA" );
-               $this->assertEquals( strlen( $fileBContents ),
-                       $this->backend->getFileSize( array( 'src' => $fileA ) ),
-                       "Correct file size of $fileA" );
-               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
-                       $this->backend->getFileSha1Base36( array( 'src' => $fileA ) ),
-                       "Correct file SHA-1 of $fileA" );
-       }
-
-       public function testGetFileList() {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetFileList();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetFileList();
-               $this->tearDownFiles();
-       }
-
-       private function doTestGetFileList() {
-               $backendName = $this->backendClass();
-               $base = self::baseStorePath();
-
-               // Should have no errors
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont-notexists" ) );
-
-               $files = array(
-                       "$base/unittest-cont1/e/test1.txt",
-                       "$base/unittest-cont1/e/test2.txt",
-                       "$base/unittest-cont1/e/test3.txt",
-                       "$base/unittest-cont1/e/subdir1/test1.txt",
-                       "$base/unittest-cont1/e/subdir1/test2.txt",
-                       "$base/unittest-cont1/e/subdir2/test3.txt",
-                       "$base/unittest-cont1/e/subdir2/test4.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/test1.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/test2.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/test3.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/test4.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/test5.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/sub/test0.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/sub/120-px-file.txt",
-               );
-
-               // Add the files
-               $ops = array();
-               foreach ( $files as $file ) {
-                       $this->prepare( array( 'dir' => dirname( $file ) ) );
-                       $ops[] = array( 'op' => 'create', 'content' => 'xxy', 'dst' => $file );
-               }
-               $status = $this->backend->doQuickOperations( $ops );
-               $this->assertGoodStatus( $status,
-                       "Creation of files succeeded ($backendName)." );
-               $this->assertEquals( true, $status->isOK(),
-                       "Creation of files succeeded with OK status ($backendName)." );
-
-               // Expected listing
-               $expected = array(
-                       "e/test1.txt",
-                       "e/test2.txt",
-                       "e/test3.txt",
-                       "e/subdir1/test1.txt",
-                       "e/subdir1/test2.txt",
-                       "e/subdir2/test3.txt",
-                       "e/subdir2/test4.txt",
-                       "e/subdir2/subdir/test1.txt",
-                       "e/subdir2/subdir/test2.txt",
-                       "e/subdir2/subdir/test3.txt",
-                       "e/subdir2/subdir/test4.txt",
-                       "e/subdir2/subdir/test5.txt",
-                       "e/subdir2/subdir/sub/test0.txt",
-                       "e/subdir2/subdir/sub/120-px-file.txt",
-               );
-               sort( $expected );
-
-               // Actual listing (no trailing slash)
-               $list = array();
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
-
-               // Actual listing (with trailing slash)
-               $list = array();
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
-
-               // Expected listing
-               $expected = array(
-                       "test1.txt",
-                       "test2.txt",
-                       "test3.txt",
-                       "test4.txt",
-                       "test5.txt",
-                       "sub/test0.txt",
-                       "sub/120-px-file.txt",
-               );
-               sort( $expected );
-
-               // Actual listing (no trailing slash)
-               $list = array();
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
-
-               // Actual listing (with trailing slash)
-               $list = array();
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir/" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct file listing ($backendName)." );
-
-               // Actual listing (using iterator second time)
-               $list = array();
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct file listing ($backendName), second iteration." );
-
-               // Expected listing (top files only)
-               $expected = array(
-                       "test1.txt",
-                       "test2.txt",
-                       "test3.txt",
-                       "test4.txt",
-                       "test5.txt"
-               );
-               sort( $expected );
-
-               // Actual listing (top files only)
-               $list = array();
-               $iter = $this->backend->getTopFileList( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top file listing ($backendName)." );
-
-               foreach ( $files as $file ) { // clean up
-                       $this->backend->doOperation( array( 'op' => 'delete', 'src' => $file ) );
-               }
-
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/unittest-cont1/not/exists" ) );
-               foreach ( $iter as $iter ) {} // no errors
-       }
-
-       public function testGetDirectoryList() {
-               $this->backend = $this->singleBackend;
-               $this->tearDownFiles();
-               $this->doTestGetDirectoryList();
-               $this->tearDownFiles();
-
-               $this->backend = $this->multiBackend;
-               $this->tearDownFiles();
-               $this->doTestGetDirectoryList();
-               $this->tearDownFiles();
-       }
-
-       private function doTestGetDirectoryList() {
-               $backendName = $this->backendClass();
-
-               $base = self::baseStorePath();
-               $files = array(
-                       "$base/unittest-cont1/e/test1.txt",
-                       "$base/unittest-cont1/e/test2.txt",
-                       "$base/unittest-cont1/e/test3.txt",
-                       "$base/unittest-cont1/e/subdir1/test1.txt",
-                       "$base/unittest-cont1/e/subdir1/test2.txt",
-                       "$base/unittest-cont1/e/subdir2/test3.txt",
-                       "$base/unittest-cont1/e/subdir2/test4.txt",
-                       "$base/unittest-cont1/e/subdir2/subdir/test1.txt",
-                       "$base/unittest-cont1/e/subdir3/subdir/test2.txt",
-                       "$base/unittest-cont1/e/subdir4/subdir/test3.txt",
-                       "$base/unittest-cont1/e/subdir4/subdir/test4.txt",
-                       "$base/unittest-cont1/e/subdir4/subdir/test5.txt",
-                       "$base/unittest-cont1/e/subdir4/subdir/sub/test0.txt",
-                       "$base/unittest-cont1/e/subdir4/subdir/sub/120-px-file.txt",
-               );
-
-               // Add the files
-               $ops = array();
-               foreach ( $files as $file ) {
-                       $this->prepare( array( 'dir' => dirname( $file ) ) );
-                       $ops[] = array( 'op' => 'create', 'content' => 'xxy', 'dst' => $file );
-               }
-               $status = $this->backend->doQuickOperations( $ops );
-               $this->assertGoodStatus( $status,
-                       "Creation of files succeeded ($backendName)." );
-               $this->assertEquals( true, $status->isOK(),
-                       "Creation of files succeeded with OK status ($backendName)." );
-
-               $this->assertEquals( true,
-                       $this->backend->directoryExists( array( 'dir' => "$base/unittest-cont1/e/subdir1" ) ),
-                       "Directory exists in ($backendName)." );
-               $this->assertEquals( true,
-                       $this->backend->directoryExists( array( 'dir' => "$base/unittest-cont1/e/subdir2/subdir" ) ),
-                       "Directory exists in ($backendName)." );
-               $this->assertEquals( false,
-                       $this->backend->directoryExists( array( 'dir' => "$base/unittest-cont1/e/subdir2/test1.txt" ) ),
-                       "Directory does not exists in ($backendName)." );
-
-               // Expected listing
-               $expected = array(
-                       "e",
-               );
-               sort( $expected );
-
-               // Actual listing (no trailing slash)
-               $list = array();
-               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
-
-               // Expected listing
-               $expected = array(
-                       "subdir1",
-                       "subdir2",
-                       "subdir3",
-                       "subdir4",
-               );
-               sort( $expected );
-
-               // Actual listing (no trailing slash)
-               $list = array();
-               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
-
-               // Actual listing (with trailing slash)
-               $list = array();
-               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e/" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
-
-               // Expected listing
-               $expected = array(
-                       "subdir",
-               );
-               sort( $expected );
-
-               // Actual listing (no trailing slash)
-               $list = array();
-               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e/subdir2" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
-
-               // Actual listing (with trailing slash)
-               $list = array();
-               $iter = $this->backend->getTopDirectoryList( array( 'dir' => "$base/unittest-cont1/e/subdir2/" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName)." );
-
-               // Actual listing (using iterator second time)
-               $list = array();
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct top dir listing ($backendName), second iteration." );
-
-               // Expected listing (recursive)
-               $expected = array(
-                       "e",
-                       "e/subdir1",
-                       "e/subdir2",
-                       "e/subdir3",
-                       "e/subdir4",
-                       "e/subdir2/subdir",
-                       "e/subdir3/subdir",
-                       "e/subdir4/subdir",
-                       "e/subdir4/subdir/sub",
-               );
-               sort( $expected );
-
-               // Actual listing (recursive)
-               $list = array();
-               $iter = $this->backend->getDirectoryList( array( 'dir' => "$base/unittest-cont1/" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct dir listing ($backendName)." );
-
-               // Expected listing (recursive)
-               $expected = array(
-                       "subdir",
-                       "subdir/sub",
-               );
-               sort( $expected );
-
-               // Actual listing (recursive)
-               $list = array();
-               $iter = $this->backend->getDirectoryList( array( 'dir' => "$base/unittest-cont1/e/subdir4" ) );
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct dir listing ($backendName)." );
-
-               // Actual listing (recursive, second time)
-               $list = array();
-               foreach ( $iter as $file ) {
-                       $list[] = $file;
-               }
-               sort( $list );
-
-               $this->assertEquals( $expected, $list, "Correct dir listing ($backendName)." );
-
-               foreach ( $files as $file ) { // clean up
-                       $this->backend->doOperation( array( 'op' => 'delete', 'src' => $file ) );
-               }
-
-               $iter = $this->backend->getDirectoryList( array( 'dir' => "$base/unittest-cont1/not/exists" ) );
-               foreach ( $iter as $iter ) {} // no errors
-       }
-
-       public function testLockCalls() {
-               $this->backend = $this->singleBackend;
-               $this->doTestLockCalls();
-       }
-
-       private function doTestLockCalls() {
-               $backendName = $this->backendClass();
-
-               for ( $i=0; $i<50; $i++ ) {
-                       $paths = array(
-                               "test1.txt",
-                               "test2.txt",
-                               "test3.txt",
-                               "subdir1",
-                               "subdir1", // duplicate
-                               "subdir1/test1.txt",
-                               "subdir1/test2.txt",
-                               "subdir2",
-                               "subdir2", // duplicate
-                               "subdir2/test3.txt",
-                               "subdir2/test4.txt",
-                               "subdir2/subdir",
-                               "subdir2/subdir/test1.txt",
-                               "subdir2/subdir/test2.txt",
-                               "subdir2/subdir/test3.txt",
-                               "subdir2/subdir/test4.txt",
-                               "subdir2/subdir/test5.txt",
-                               "subdir2/subdir/sub",
-                               "subdir2/subdir/sub/test0.txt",
-                               "subdir2/subdir/sub/120-px-file.txt",
-                       );
-
-                       $status = $this->backend->lockFiles( $paths, LockManager::LOCK_EX );
-                       $this->assertEquals( array(), $status->errors,
-                               "Locking of files succeeded ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Locking of files succeeded with OK status ($backendName)." );
-
-                       $status = $this->backend->lockFiles( $paths, LockManager::LOCK_SH );
-                       $this->assertEquals( array(), $status->errors,
-                               "Locking of files succeeded ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Locking of files succeeded with OK status ($backendName)." );
-
-                       $status = $this->backend->unlockFiles( $paths, LockManager::LOCK_SH );
-                       $this->assertEquals( array(), $status->errors,
-                               "Locking of files succeeded ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Locking of files succeeded with OK status ($backendName)." );
-
-                       $status = $this->backend->unlockFiles( $paths, LockManager::LOCK_EX );
-                       $this->assertEquals( array(), $status->errors,
-                               "Locking of files succeeded ($backendName)." );
-                       $this->assertEquals( true, $status->isOK(),
-                               "Locking of files succeeded with OK status ($backendName)." );
-               }
-       }
-
-       // test helper wrapper for backend prepare() function
-       private function prepare( array $params ) {
-               return $this->backend->prepare( $params );
-       }
-
-       // test helper wrapper for backend prepare() function
-       private function create( array $params ) {
-               $params['op'] = 'create';
-               return $this->backend->doQuickOperations( array( $params ) );
-       }
-
-       function tearDownFiles() {
-               foreach ( $this->filesToPrune as $file ) {
-                       @unlink( $file );
-               }
-               $containers = array( 'unittest-cont1', 'unittest-cont2' );
-               foreach ( $containers as $container ) {
-                       $this->deleteFiles( $container );
-               }
-               $this->filesToPrune = array();
-       }
-
-       private function deleteFiles( $container ) {
-               $base = self::baseStorePath();
-               $iter = $this->backend->getFileList( array( 'dir' => "$base/$container" ) );
-               if ( $iter ) {
-                       foreach ( $iter as $file ) {
-                               $this->backend->quickDelete( array( 'src' => "$base/$container/$file" ) );
-                       }
-               }
-               $this->backend->clean( array( 'dir' => "$base/$container", 'recursive' => 1 ) );
-       }
-
-       function assertBackendPathsConsistent( array $paths ) {
-               if ( $this->backend instanceof FileBackendMultiWrite ) {
-                       $status = $this->backend->consistencyCheck( $paths );
-                       $this->assertGoodStatus( $status, "Files synced: " . implode( ',', $paths ) );
-               }
-       }
-
-       function assertGoodStatus( $status, $msg ) {
-               $this->assertEquals( print_r( array(), 1 ), print_r( $status->errors, 1 ), $msg );
-       }
-}