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[autoinstallsdev/mediawiki.git] / maintenance / tests / parser / parserTest.inc
diff --git a/maintenance/tests/parser/parserTest.inc b/maintenance/tests/parser/parserTest.inc
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+<?php
+# Copyright (C) 2004, 2010 Brion Vibber <brion@pobox.com>
+# http://www.mediawiki.org/
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# http://www.gnu.org/copyleft/gpl.html
+
+/**
+ * @todo Make this more independent of the configuration (and if possible the database)
+ * @todo document
+ * @file
+ * @ingroup Maintenance
+ */
+
+/**
+ * @ingroup Maintenance
+ */
+class ParserTest {
+       /**
+        * boolean $color whereas output should be colorized
+        */
+       private $color;
+
+       /**
+        * boolean $showOutput Show test output
+        */
+       private $showOutput;
+
+       /**
+        * boolean $useTemporaryTables Use temporary tables for the temporary database
+        */
+       private $useTemporaryTables = true;
+
+       /**
+        * boolean $databaseSetupDone True if the database has been set up
+        */
+       private $databaseSetupDone = false;
+
+       /**
+        * string $oldTablePrefix Original table prefix
+        */
+       private $oldTablePrefix;
+
+       private $maxFuzzTestLength = 300;
+       private $fuzzSeed = 0;
+       private $memoryLimit = 50;
+       private $uploadDir = null;
+
+       public $regex = "";
+       private $savedGlobals = array();
+       /**
+        * Sets terminal colorization and diff/quick modes depending on OS and
+        * command-line options (--color and --quick).
+        */
+       public function ParserTest( $options = array() ) {
+               # Only colorize output if stdout is a terminal.
+               $this->color = !wfIsWindows() && posix_isatty( 1 );
+
+               if ( isset( $options['color'] ) ) {
+                       switch( $options['color'] ) {
+                       case 'no':
+                               $this->color = false;
+                               break;
+                       case 'yes':
+                       default:
+                               $this->color = true;
+                               break;
+                       }
+               }
+
+               $this->term = $this->color
+                       ? new AnsiTermColorer()
+                       : new DummyTermColorer();
+
+               $this->showDiffs = !isset( $options['quick'] );
+               $this->showProgress = !isset( $options['quiet'] );
+               $this->showFailure = !(
+                       isset( $options['quiet'] )
+                       && ( isset( $options['record'] )
+                               || isset( $options['compare'] ) ) ); // redundant output
+
+               $this->showOutput = isset( $options['show-output'] );
+
+
+               if ( isset( $options['regex'] ) ) {
+                       if ( isset( $options['record'] ) ) {
+                               echo "Warning: --record cannot be used with --regex, disabling --record\n";
+                               unset( $options['record'] );
+                       }
+                       $this->regex = $options['regex'];
+               } else {
+                       # Matches anything
+                       $this->regex = '';
+               }
+
+               $this->setupRecorder( $options );
+               $this->keepUploads = isset( $options['keep-uploads'] );
+
+               if ( isset( $options['seed'] ) ) {
+                       $this->fuzzSeed = intval( $options['seed'] ) - 1;
+               }
+
+               $this->runDisabled = isset( $options['run-disabled'] );
+
+               $this->hooks = array();
+               $this->functionHooks = array();
+               self::setUp();
+       }
+
+       static function setUp() {
+               global $wgParser, $wgParserConf, $IP, $messageMemc, $wgMemc, $wgDeferredUpdateList,
+                       $wgUser, $wgLang, $wgOut, $wgRequest, $wgStyleDirectory, $wgEnableParserCache,
+                       $wgMessageCache, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $parserMemc,
+                       $wgNamespaceAliases, $wgNamespaceProtection, $wgLocalFileRepo,
+                       $wgThumbnailScriptPath, $wgScriptPath,
+                       $wgArticlePath, $wgStyleSheetPath, $wgScript, $wgStylePath;
+
+               $wgScript = '/index.php';
+               $wgScriptPath = '/';
+               $wgArticlePath = '/wiki/$1';
+               $wgStyleSheetPath = '/skins';
+               $wgStylePath = '/skins';
+               $wgThumbnailScriptPath = false;
+               $wgLocalFileRepo = array(
+                       'class' => 'LocalRepo',
+                       'name' => 'local',
+                       'directory' => wfTempDir() . '/test-repo',
+                       'url' => 'http://example.com/images',
+                       'deletedDir' => wfTempDir() . '/test-repo/delete',
+                       'hashLevels' => 2,
+                       'transformVia404' => false,
+               );
+               $wgNamespaceProtection[NS_MEDIAWIKI] = 'editinterface';
+               $wgNamespaceAliases['Image'] = NS_FILE;
+               $wgNamespaceAliases['Image_talk'] = NS_FILE_TALK;
+
+
+               $wgEnableParserCache = false;
+               $wgDeferredUpdateList = array();
+               $wgMemc = &wfGetMainCache();
+               $messageMemc = &wfGetMessageCacheStorage();
+               $parserMemc = &wfGetParserCacheStorage();
+
+               // $wgContLang = new StubContLang;
+               $wgUser = new User;
+               $wgLang = new StubUserLang;
+               $wgOut = new StubObject( 'wgOut', 'OutputPage' );
+               $wgParser = new StubObject( 'wgParser', $wgParserConf['class'], array( $wgParserConf ) );
+               $wgRequest = new WebRequest;
+
+               $wgMessageCache = new StubObject( 'wgMessageCache', 'MessageCache',
+                                                                                 array( $messageMemc, $wgUseDatabaseMessages,
+                                                                                                $wgMsgCacheExpiry ) );
+               if ( $wgStyleDirectory === false ) {
+                       $wgStyleDirectory   = "$IP/skins";
+               }
+
+       }
+
+       public function setupRecorder ( $options ) {
+               if ( isset( $options['record'] ) ) {
+                       $this->recorder = new DbTestRecorder( $this );
+                       $this->recorder->version = isset( $options['setversion'] ) ?
+                                       $options['setversion'] : SpecialVersion::getVersion();
+               } elseif ( isset( $options['compare'] ) ) {
+                       $this->recorder = new DbTestPreviewer( $this );
+               } elseif ( isset( $options['upload'] ) ) {
+                       $this->recorder = new RemoteTestRecorder( $this );
+               } else {
+                       $this->recorder = new TestRecorder( $this );
+               }
+       }
+
+       /**
+        * Remove last character if it is a newline
+        * @group utility
+        */
+       static public function chomp( $s ) {
+               if ( substr( $s, -1 ) === "\n" ) {
+                       return substr( $s, 0, -1 );
+               }
+               else {
+                       return $s;
+               }
+       }
+
+       /**
+        * Run a fuzz test series
+        * Draw input from a set of test files
+        */
+       function fuzzTest( $filenames ) {
+               $GLOBALS['wgContLang'] = Language::factory( 'en' );
+               $dict = $this->getFuzzInput( $filenames );
+               $dictSize = strlen( $dict );
+               $logMaxLength = log( $this->maxFuzzTestLength );
+               $this->setupDatabase();
+               ini_set( 'memory_limit', $this->memoryLimit * 1048576 );
+
+               $numTotal = 0;
+               $numSuccess = 0;
+               $user = new User;
+               $opts = ParserOptions::newFromUser( $user );
+               $title = Title::makeTitle( NS_MAIN, 'Parser_test' );
+
+               while ( true ) {
+                       // Generate test input
+                       mt_srand( ++$this->fuzzSeed );
+                       $totalLength = mt_rand( 1, $this->maxFuzzTestLength );
+                       $input = '';
+
+                       while ( strlen( $input ) < $totalLength ) {
+                               $logHairLength = mt_rand( 0, 1000000 ) / 1000000 * $logMaxLength;
+                               $hairLength = min( intval( exp( $logHairLength ) ), $dictSize );
+                               $offset = mt_rand( 0, $dictSize - $hairLength );
+                               $input .= substr( $dict, $offset, $hairLength );
+                       }
+
+                       $this->setupGlobals();
+                       $parser = $this->getParser();
+
+                       // Run the test
+                       try {
+                               $parser->parse( $input, $title, $opts );
+                               $fail = false;
+                       } catch ( Exception $exception ) {
+                               $fail = true;
+                       }
+
+                       if ( $fail ) {
+                               echo "Test failed with seed {$this->fuzzSeed}\n";
+                               echo "Input:\n";
+                               var_dump( $input );
+                               echo "\n\n";
+                               echo "$exception\n";
+                       } else {
+                               $numSuccess++;
+                       }
+
+                       $numTotal++;
+                       $this->teardownGlobals();
+                       $parser->__destruct();
+
+                       if ( $numTotal % 100 == 0 ) {
+                               $usage = intval( memory_get_usage( true ) / $this->memoryLimit / 1048576 * 100 );
+                               echo "{$this->fuzzSeed}: $numSuccess/$numTotal (mem: $usage%)\n";
+                               if ( $usage > 90 ) {
+                                       echo "Out of memory:\n";
+                                       $memStats = $this->getMemoryBreakdown();
+
+                                       foreach ( $memStats as $name => $usage ) {
+                                               echo "$name: $usage\n";
+                                       }
+                                       $this->abort();
+                               }
+                       }
+               }
+       }
+
+       /**
+        * Get an input dictionary from a set of parser test files
+        */
+       function getFuzzInput( $filenames ) {
+               $dict = '';
+
+               foreach ( $filenames as $filename ) {
+                       $contents = file_get_contents( $filename );
+                       preg_match_all( '/!!\s*input\n(.*?)\n!!\s*result/s', $contents, $matches );
+
+                       foreach ( $matches[1] as $match ) {
+                               $dict .= $match . "\n";
+                       }
+               }
+
+               return $dict;
+       }
+
+       /**
+        * Get a memory usage breakdown
+        */
+       function getMemoryBreakdown() {
+               $memStats = array();
+
+               foreach ( $GLOBALS as $name => $value ) {
+                       $memStats['$' . $name] = strlen( serialize( $value ) );
+               }
+
+               $classes = get_declared_classes();
+
+               foreach ( $classes as $class ) {
+                       $rc = new ReflectionClass( $class );
+                       $props = $rc->getStaticProperties();
+                       $memStats[$class] = strlen( serialize( $props ) );
+                       $methods = $rc->getMethods();
+
+                       foreach ( $methods as $method ) {
+                               $memStats[$class] += strlen( serialize( $method->getStaticVariables() ) );
+                       }
+               }
+
+               $functions = get_defined_functions();
+
+               foreach ( $functions['user'] as $function ) {
+                       $rf = new ReflectionFunction( $function );
+                       $memStats["$function()"] = strlen( serialize( $rf->getStaticVariables() ) );
+               }
+
+               asort( $memStats );
+
+               return $memStats;
+       }
+
+       function abort() {
+               $this->abort();
+       }
+
+       /**
+        * Run a series of tests listed in the given text files.
+        * Each test consists of a brief description, wikitext input,
+        * and the expected HTML output.
+        *
+        * Prints status updates on stdout and counts up the total
+        * number and percentage of passed tests.
+        *
+        * @param $filenames Array of strings
+        * @return Boolean: true if passed all tests, false if any tests failed.
+        */
+       public function runTestsFromFiles( $filenames ) {
+               $ok = false;
+               $GLOBALS['wgContLang'] = Language::factory( 'en' );
+               $this->recorder->start();
+               try {
+                       $this->setupDatabase();
+                       $ok = true;
+                       
+                       foreach ( $filenames as $filename ) {
+                               $tests = new TestFileIterator( $filename, $this );
+                               $ok = $this->runTests( $tests ) && $ok;
+                       }
+
+                       $this->teardownDatabase();
+                       $this->recorder->report();
+               } catch (DBError $e) {
+                       echo $e->getMessage();
+               }
+               $this->recorder->end();
+
+               return $ok;
+       }
+
+       function runTests( $tests ) {
+               $ok = true;
+
+               foreach ( $tests as $t ) {
+                       $result =
+                               $this->runTest( $t['test'], $t['input'], $t['result'], $t['options'], $t['config'] );
+                       $ok = $ok && $result;
+                       $this->recorder->record( $t['test'], $result );
+               }
+
+               if ( $this->showProgress ) {
+                       print "\n";
+               }
+
+               return $ok;
+       }
+
+       /**
+        * Get a Parser object
+        */
+       function getParser( $preprocessor = null ) {
+               global $wgParserConf;
+
+               $class = $wgParserConf['class'];
+               $parser = new $class( array( 'preprocessorClass' => $preprocessor ) + $wgParserConf );
+
+               foreach ( $this->hooks as $tag => $callback ) {
+                       $parser->setHook( $tag, $callback );
+               }
+
+               foreach ( $this->functionHooks as $tag => $bits ) {
+                       list( $callback, $flags ) = $bits;
+                       $parser->setFunctionHook( $tag, $callback, $flags );
+               }
+
+               wfRunHooks( 'ParserTestParser', array( &$parser ) );
+
+               return $parser;
+       }
+
+       /**
+        * Run a given wikitext input through a freshly-constructed wiki parser,
+        * and compare the output against the expected results.
+        * Prints status and explanatory messages to stdout.
+        *
+        * @param $desc String: test's description
+        * @param $input String: wikitext to try rendering
+        * @param $result String: result to output
+        * @param $opts Array: test's options
+        * @param $config String: overrides for global variables, one per line
+        * @return Boolean
+        */
+       public function runTest( $desc, $input, $result, $opts, $config ) {
+               if ( $this->showProgress ) {
+                       $this->showTesting( $desc );
+               }
+
+               $opts = $this->parseOptions( $opts );
+               $this->setupGlobals( $opts, $config );
+
+               $user = new User();
+               $options = ParserOptions::newFromUser( $user );
+
+               if ( isset( $opts['title'] ) ) {
+                       $titleText = $opts['title'];
+               }
+               else {
+                       $titleText = 'Parser test';
+               }
+
+               $local = isset( $opts['local'] );
+               $preprocessor = isset( $opts['preprocessor'] ) ? $opts['preprocessor'] : null;
+               $parser = $this->getParser( $preprocessor );
+               $title = Title::newFromText( $titleText );
+
+               if ( isset( $opts['pst'] ) ) {
+                       $out = $parser->preSaveTransform( $input, $title, $user, $options );
+               } elseif ( isset( $opts['msg'] ) ) {
+                       $out = $parser->transformMsg( $input, $options );
+               } elseif ( isset( $opts['section'] ) ) {
+                       $section = $opts['section'];
+                       $out = $parser->getSection( $input, $section );
+               } elseif ( isset( $opts['replace'] ) ) {
+                       $section = $opts['replace'][0];
+                       $replace = $opts['replace'][1];
+                       $out = $parser->replaceSection( $input, $section, $replace );
+               } elseif ( isset( $opts['comment'] ) ) {
+                       $linker = $user->getSkin();
+                       $out = $linker->formatComment( $input, $title, $local );
+               } elseif ( isset( $opts['preload'] ) ) {
+                       $out = $parser->getpreloadText( $input, $title, $options );
+               } else {
+                       $output = $parser->parse( $input, $title, $options, true, true, 1337 );
+                       $out = $output->getText();
+
+                       if ( isset( $opts['showtitle'] ) ) {
+                               if ( $output->getTitleText() ) {
+                                       $title = $output->getTitleText();
+                               }
+
+                               $out = "$title\n$out";
+                       }
+
+                       if ( isset( $opts['ill'] ) ) {
+                               $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
+                       } elseif ( isset( $opts['cat'] ) ) {
+                               global $wgOut;
+
+                               $wgOut->addCategoryLinks( $output->getCategories() );
+                               $cats = $wgOut->getCategoryLinks();
+
+                               if ( isset( $cats['normal'] ) ) {
+                                       $out = $this->tidy( implode( ' ', $cats['normal'] ) );
+                               } else {
+                                       $out = '';
+                               }
+                       }
+
+                       $result = $this->tidy( $result );
+               }
+
+               $this->teardownGlobals();
+               return $this->showTestResult( $desc, $result, $out );
+       }
+
+       /**
+        *
+        */
+       function showTestResult( $desc, $result, $out ) {
+               if ( $result === $out ) {
+                       $this->showSuccess( $desc );
+                       return true;
+               } else {
+                       $this->showFailure( $desc, $result, $out );
+                       return false;
+               }
+       }
+
+       /**
+        * Use a regex to find out the value of an option
+        * @param $key String: name of option val to retrieve
+        * @param $opts Options array to look in
+        * @param $default Mixed: default value returned if not found
+        */
+       private static function getOptionValue( $key, $opts, $default ) {
+               $key = strtolower( $key );
+
+               if ( isset( $opts[$key] ) ) {
+                       return $opts[$key];
+               } else {
+                       return $default;
+               }
+       }
+
+       private function parseOptions( $instring ) {
+               $opts = array();
+               // foo
+               // foo=bar
+               // foo="bar baz"
+               // foo=[[bar baz]]
+               // foo=bar,"baz quux"
+               $regex = '/\b
+                       ([\w-]+)                                                # Key
+                       \b
+                       (?:\s*
+                               =                                               # First sub-value
+                               \s*
+                               (
+                                       "
+                                               [^"]*                   # Quoted val
+                                       "
+                               |
+                                       \[\[
+                                               [^]]*                   # Link target
+                                       \]\]
+                               |
+                                       [\w-]+                          # Plain word
+                               )
+                               (?:\s*
+                                       ,                                       # Sub-vals 1..N
+                                       \s*
+                                       (
+                                               "[^"]*"                 # Quoted val
+                                       |
+                                               \[\[[^]]*\]\]   # Link target
+                                       |
+                                               [\w-]+                  # Plain word
+                                       )
+                               )*
+                       )?
+                       /x';
+
+               if ( preg_match_all( $regex, $instring, $matches, PREG_SET_ORDER ) ) {
+                       foreach ( $matches as $bits ) {
+                               array_shift( $bits );
+                               $key = strtolower( array_shift( $bits ) );
+                               if ( count( $bits ) == 0 ) {
+                                       $opts[$key] = true;
+                               } elseif ( count( $bits ) == 1 ) {
+                                       $opts[$key] = $this->cleanupOption( array_shift( $bits ) );
+                               } else {
+                                       // Array!
+                                       $opts[$key] = array_map( array( $this, 'cleanupOption' ), $bits );
+                               }
+                       }
+               }
+               return $opts;
+       }
+
+       private function cleanupOption( $opt ) {
+               if ( substr( $opt, 0, 1 ) == '"' ) {
+                       return substr( $opt, 1, -1 );
+               }
+
+               if ( substr( $opt, 0, 2 ) == '[[' ) {
+                       return substr( $opt, 2, -2 );
+               }
+               return $opt;
+       }
+
+       /**
+        * Set up the global variables for a consistent environment for each test.
+        * Ideally this should replace the global configuration entirely.
+        */
+       private function setupGlobals( $opts = '', $config = '' ) {
+               global $wgDBtype;
+
+               # Find out values for some special options.
+               $lang =
+                       self::getOptionValue( 'language', $opts, 'en' );
+               $variant =
+                       self::getOptionValue( 'variant', $opts, false );
+               $maxtoclevel =
+                       self::getOptionValue( 'wgMaxTocLevel', $opts, 999 );
+               $linkHolderBatchSize =
+                       self::getOptionValue( 'wgLinkHolderBatchSize', $opts, 1000 );
+
+               $settings = array(
+                       'wgServer' => 'http://Britney-Spears',
+                       'wgScript' => '/index.php',
+                       'wgScriptPath' => '/',
+                       'wgArticlePath' => '/wiki/$1',
+                       'wgActionPaths' => array(),
+                       'wgLocalFileRepo' => array(
+                               'class' => 'LocalRepo',
+                               'name' => 'local',
+                               'directory' => $this->uploadDir,
+                               'url' => 'http://example.com/images',
+                               'hashLevels' => 2,
+                               'transformVia404' => false,
+                       ),
+                       'wgEnableUploads' => self::getOptionValue( 'wgEnableUploads', $opts, true ),
+                       'wgStylePath' => '/skins',
+                       'wgStyleSheetPath' => '/skins',
+                       'wgSitename' => 'MediaWiki',
+                       'wgLanguageCode' => $lang,
+                       'wgDBprefix' => $wgDBtype != 'oracle' ? 'parsertest_' : 'pt_',
+                       'wgRawHtml' => isset( $opts['rawhtml'] ),
+                       'wgLang' => null,
+                       'wgContLang' => null,
+                       'wgNamespacesWithSubpages' => array( 0 => isset( $opts['subpage'] ) ),
+                       'wgMaxTocLevel' => $maxtoclevel,
+                       'wgCapitalLinks' => true,
+                       'wgNoFollowLinks' => true,
+                       'wgNoFollowDomainExceptions' => array(),
+                       'wgThumbnailScriptPath' => false,
+                       'wgUseImageResize' => false,
+                       'wgUseTeX' => isset( $opts['math'] ),
+                       'wgMathDirectory' => $this->uploadDir . '/math',
+                       'wgLocaltimezone' => 'UTC',
+                       'wgAllowExternalImages' => true,
+                       'wgUseTidy' => false,
+                       'wgDefaultLanguageVariant' => $variant,
+                       'wgVariantArticlePath' => false,
+                       'wgGroupPermissions' => array( '*' => array(
+                               'createaccount' => true,
+                               'read'          => true,
+                               'edit'          => true,
+                               'createpage'    => true,
+                               'createtalk'    => true,
+                       ) ),
+                       'wgNamespaceProtection' => array( NS_MEDIAWIKI => 'editinterface' ),
+                       'wgDefaultExternalStore' => array(),
+                       'wgForeignFileRepos' => array(),
+                       'wgLinkHolderBatchSize' => $linkHolderBatchSize,
+                       'wgExperimentalHtmlIds' => false,
+                       'wgExternalLinkTarget' => false,
+                       'wgAlwaysUseTidy' => false,
+                       'wgHtml5' => true,
+                       'wgWellFormedXml' => true,
+                       'wgAllowMicrodataAttributes' => true,
+               );
+
+               if ( $config ) {
+                       $configLines = explode( "\n", $config );
+
+                       foreach ( $configLines as $line ) {
+                               list( $var, $value ) = explode( '=', $line, 2 );
+
+                               $settings[$var] = eval( "return $value;" );
+                       }
+               }
+
+               $this->savedGlobals = array();
+
+               foreach ( $settings as $var => $val ) {
+                       if ( array_key_exists( $var, $GLOBALS ) ) {
+                               $this->savedGlobals[$var] = $GLOBALS[$var];
+                       }
+
+                       $GLOBALS[$var] = $val;
+               }
+
+               $langObj = Language::factory( $lang );
+               $GLOBALS['wgLang'] = $langObj;
+               $GLOBALS['wgContLang'] = $langObj;
+               $GLOBALS['wgMemc'] = new FakeMemCachedClient;
+               $GLOBALS['wgOut'] = new OutputPage;
+
+               global $wgHooks;
+
+               $wgHooks['ParserTestParser'][] = 'ParserTestParserHook::setup';
+               $wgHooks['ParserTestParser'][] = 'ParserTestStaticParserHook::setup';
+               $wgHooks['ParserGetVariableValueTs'][] = 'ParserTest::getFakeTimestamp';
+
+               MagicWord::clearCache();
+
+               global $wgUser;
+               $wgUser = new User();
+       }
+
+       /**
+        * List of temporary tables to create, without prefix.
+        * Some of these probably aren't necessary.
+        */
+       private function listTables() {
+               global $wgDBtype;
+
+               $tables = array( 'user', 'user_properties', 'page', 'page_restrictions',
+                       'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
+                       'categorylinks', 'templatelinks', 'externallinks', 'langlinks', 'iwlinks',
+                       'site_stats', 'hitcounter',     'ipblocks', 'image', 'oldimage',
+                       'recentchanges', 'watchlist', 'math', 'interwiki', 'logging',
+                       'querycache', 'objectcache', 'job', 'l10n_cache', 'redirect', 'querycachetwo',
+                       'archive', 'user_groups', 'page_props', 'category', 'msg_resource', 'msg_resource_links'
+               );
+
+               if ( in_array( $wgDBtype, array( 'mysql', 'sqlite', 'oracle' ) ) )
+                       array_push( $tables, 'searchindex' );
+
+               // Allow extensions to add to the list of tables to duplicate;
+               // may be necessary if they hook into page save or other code
+               // which will require them while running tests.
+               wfRunHooks( 'ParserTestTables', array( &$tables ) );
+
+               return $tables;
+       }
+
+       /**
+        * Set up a temporary set of wiki tables to work with for the tests.
+        * Currently this will only be done once per run, and any changes to
+        * the db will be visible to later tests in the run.
+        */
+       public function setupDatabase() {
+               global $wgDBprefix, $wgDBtype;
+
+               if ( $this->databaseSetupDone ) {
+                       return;
+               }
+
+               if ( $wgDBprefix === 'parsertest_' || ( $wgDBtype == 'oracle' && $wgDBprefix === 'pt_' ) ) {
+                       throw new MWException( 'setupDatabase should be called before setupGlobals' );
+               }
+
+               $this->databaseSetupDone = true;
+               $this->oldTablePrefix = $wgDBprefix;
+
+               # SqlBagOStuff broke when using temporary tables on r40209 (bug 15892).
+               # It seems to have been fixed since (r55079?).
+               # If it fails, $wgCaches[CACHE_DB] = new HashBagOStuff(); should work around it.
+
+               # CREATE TEMPORARY TABLE breaks if there is more than one server
+               if ( wfGetLB()->getServerCount() != 1 ) {
+                       $this->useTemporaryTables = false;
+               }
+
+               $temporary = $this->useTemporaryTables || $wgDBtype == 'postgres';
+
+               $db = wfGetDB( DB_MASTER );
+               $tables = $this->listTables();
+
+               foreach ( $tables as $tbl ) {
+                       # Clean up from previous aborted run.  So that table escaping
+                       # works correctly across DB engines, we need to change the pre-
+                       # fix back and forth so tableName() works right.
+                       $this->changePrefix( $this->oldTablePrefix );
+                       $oldTableName = $db->tableName( $tbl );
+                       $this->changePrefix( $wgDBtype != 'oracle' ? 'parsertest_' : 'pt_' );
+                       $newTableName = $db->tableName( $tbl );
+
+                       if ( $wgDBtype == 'mysql' ) {
+                               $db->query( "DROP TABLE IF EXISTS $newTableName" );
+                       } elseif ( in_array( $wgDBtype, array( 'postgres', 'oracle' ) ) ) {
+                               /* DROPs wouldn't work due to Foreign Key Constraints (bug 14990, r58669)
+                                * Use "DROP TABLE IF EXISTS $newTableName CASCADE" for postgres? That
+                                * syntax would also work for mysql.
+                                */
+                       } elseif ( $db->tableExists( $tbl ) ) {
+                               $db->query( "DROP TABLE $newTableName" );
+                       }
+
+                       # Create new table
+                       $db->duplicateTableStructure( $oldTableName, $newTableName, $temporary );
+               }
+
+               if ( $wgDBtype == 'oracle' )
+                       $db->query( 'BEGIN FILL_WIKI_INFO; END;' );
+
+               $this->changePrefix( $wgDBtype != 'oracle' ? 'parsertest_' : 'pt_' );
+
+               if ( $wgDBtype == 'oracle' ) {
+                       # Insert 0 user to prevent FK violations
+
+                       # Anonymous user
+                       $db->insert( 'user', array(
+                               'user_id'         => 0,
+                               'user_name'       => 'Anonymous' ) );
+               }
+
+               # Hack: insert a few Wikipedia in-project interwiki prefixes,
+               # for testing inter-language links
+               $db->insert( 'interwiki', array(
+                       array( 'iw_prefix' => 'wikipedia',
+                                  'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
+                                  'iw_api'    => '',
+                                  'iw_wikiid' => '',
+                                  'iw_local'  => 0 ),
+                       array( 'iw_prefix' => 'meatball',
+                                  'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
+                                  'iw_api'    => '',
+                                  'iw_wikiid' => '',
+                                  'iw_local'  => 0 ),
+                       array( 'iw_prefix' => 'zh',
+                                  'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
+                                  'iw_api'    => '',
+                                  'iw_wikiid' => '',
+                                  'iw_local'  => 1 ),
+                       array( 'iw_prefix' => 'es',
+                                  'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
+                                  'iw_api'    => '',
+                                  'iw_wikiid' => '',
+                                  'iw_local'  => 1 ),
+                       array( 'iw_prefix' => 'fr',
+                                  'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
+                                  'iw_api'    => '',
+                                  'iw_wikiid' => '',
+                                  'iw_local'  => 1 ),
+                       array( 'iw_prefix' => 'ru',
+                                  'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
+                                  'iw_api'    => '',
+                                  'iw_wikiid' => '',
+                                  'iw_local'  => 1 ),
+                       ) );
+
+
+               # Update certain things in site_stats
+               $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 2, 'ss_good_articles' => 1 ) );
+
+               # Reinitialise the LocalisationCache to match the database state
+               Language::getLocalisationCache()->unloadAll();
+
+               # Make a new message cache
+               global $wgMessageCache, $wgMemc;
+               $wgMessageCache = new MessageCache( $wgMemc, true, 3600 );
+
+               $this->uploadDir = $this->setupUploadDir();
+               $user = User::createNew( 'WikiSysop' );
+               $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.jpg' ) );
+               $image->recordUpload2( '', 'Upload of some lame file', 'Some lame file', array(
+                       'size'        => 12345,
+                       'width'       => 1941,
+                       'height'      => 220,
+                       'bits'        => 24,
+                       'media_type'  => MEDIATYPE_BITMAP,
+                       'mime'        => 'image/jpeg',
+                       'metadata'    => serialize( array() ),
+                       'sha1'        => wfBaseConvert( '', 16, 36, 31 ),
+                       'fileExists'  => true
+                       ), $db->timestamp( '20010115123500' ), $user );
+
+               # This image will be blacklisted in [[MediaWiki:Bad image list]]
+               $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Bad.jpg' ) );
+               $image->recordUpload2( '', 'zomgnotcensored', 'Borderline image', array(
+                       'size'        => 12345,
+                       'width'       => 320,
+                       'height'      => 240,
+                       'bits'        => 24,
+                       'media_type'  => MEDIATYPE_BITMAP,
+                       'mime'        => 'image/jpeg',
+                       'metadata'    => serialize( array() ),
+                       'sha1'        => wfBaseConvert( '', 16, 36, 31 ),
+                       'fileExists'  => true
+                       ), $db->timestamp( '20010115123500' ), $user );
+       }
+
+       /**
+        * Change the table prefix on all open DB connections/
+        */
+       protected function changePrefix( $prefix ) {
+               global $wgDBprefix;
+               wfGetLBFactory()->forEachLB( array( $this, 'changeLBPrefix' ), array( $prefix ) );
+               $wgDBprefix = $prefix;
+       }
+
+       public function changeLBPrefix( $lb, $prefix ) {
+               $lb->forEachOpenConnection( array( $this, 'changeDBPrefix' ), array( $prefix ) );
+       }
+
+       public function changeDBPrefix( $db, $prefix ) {
+               $db->tablePrefix( $prefix );
+       }
+
+       public function teardownDatabase() {
+               global $wgDBtype;
+
+               if ( !$this->databaseSetupDone ) {
+                       $this->teardownGlobals();
+                       return;
+               }
+               $this->teardownUploadDir( $this->uploadDir );
+
+               $this->changePrefix( $this->oldTablePrefix );
+               $this->databaseSetupDone = false;
+
+               if ( $this->useTemporaryTables ) {
+                       # Don't need to do anything
+                       $this->teardownGlobals();
+                       return;
+               }
+
+               $tables = $this->listTables();
+               $db = wfGetDB( DB_MASTER );
+
+               foreach ( $tables as $table ) {
+                       $sql = $wgDBtype == 'oracle' ? "DROP TABLE pt_$table DROP CONSTRAINTS" : "DROP TABLE `parsertest_$table`";
+                       $db->query( $sql );
+               }
+
+               if ( $wgDBtype == 'oracle' )
+                       $db->query( 'BEGIN FILL_WIKI_INFO; END;' );
+
+               $this->teardownGlobals();
+       }
+
+       /**
+        * Create a dummy uploads directory which will contain a couple
+        * of files in order to pass existence tests.
+        *
+        * @return String: the directory
+        */
+       private function setupUploadDir() {
+               global $IP;
+
+               if ( $this->keepUploads ) {
+                       $dir = wfTempDir() . '/mwParser-images';
+
+                       if ( is_dir( $dir ) ) {
+                               return $dir;
+                       }
+               } else {
+                       $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
+               }
+
+               // wfDebug( "Creating upload directory $dir\n" );
+               if ( file_exists( $dir ) ) {
+                       wfDebug( "Already exists!\n" );
+                       return $dir;
+               }
+
+               wfMkdirParents( $dir . '/3/3a' );
+               copy( "$IP/skins/monobook/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
+               wfMkdirParents( $dir . '/0/09' );
+               copy( "$IP/skins/monobook/headbg.jpg", "$dir/0/09/Bad.jpg" );
+
+               return $dir;
+       }
+
+       /**
+        * Restore default values and perform any necessary clean-up
+        * after each test runs.
+        */
+       private function teardownGlobals() {
+               RepoGroup::destroySingleton();
+               LinkCache::singleton()->clear();
+
+               foreach ( $this->savedGlobals as $var => $val ) {
+                       $GLOBALS[$var] = $val;
+               }
+       }
+
+       /**
+        * Remove the dummy uploads directory
+        */
+       private function teardownUploadDir( $dir ) {
+               if ( $this->keepUploads ) {
+                       return;
+               }
+
+               // delete the files first, then the dirs.
+               self::deleteFiles(
+                       array (
+                               "$dir/3/3a/Foobar.jpg",
+                               "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
+                               "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
+                               "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
+                               "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
+
+                               "$dir/0/09/Bad.jpg",
+
+                               "$dir/math/f/a/5/fa50b8b616463173474302ca3e63586b.png",
+                       )
+               );
+
+               self::deleteDirs(
+                       array (
+                               "$dir/3/3a",
+                               "$dir/3",
+                               "$dir/thumb/6/65",
+                               "$dir/thumb/6",
+                               "$dir/thumb/3/3a/Foobar.jpg",
+                               "$dir/thumb/3/3a",
+                               "$dir/thumb/3",
+
+                               "$dir/0/09/",
+                               "$dir/0/",
+                               "$dir/thumb",
+                               "$dir/math/f/a/5",
+                               "$dir/math/f/a",
+                               "$dir/math/f",
+                               "$dir/math",
+                               "$dir",
+                       )
+               );
+       }
+
+       /**
+        * Delete the specified files, if they exist.
+        * @param $files Array: full paths to files to delete.
+        */
+       private static function deleteFiles( $files ) {
+               foreach ( $files as $file ) {
+                       if ( file_exists( $file ) ) {
+                               unlink( $file );
+                       }
+               }
+       }
+
+       /**
+        * Delete the specified directories, if they exist. Must be empty.
+        * @param $dirs Array: full paths to directories to delete.
+        */
+       private static function deleteDirs( $dirs ) {
+               foreach ( $dirs as $dir ) {
+                       if ( is_dir( $dir ) ) {
+                               rmdir( $dir );
+                       }
+               }
+       }
+
+       /**
+        * "Running test $desc..."
+        */
+       protected function showTesting( $desc ) {
+               print "Running test $desc... ";
+       }
+
+       /**
+        * Print a happy success message.
+        *
+        * @param $desc String: the test name
+        * @return Boolean
+        */
+       protected function showSuccess( $desc ) {
+               if ( $this->showProgress ) {
+                       print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
+               }
+
+               return true;
+       }
+
+       /**
+        * Print a failure message and provide some explanatory output
+        * about what went wrong if so configured.
+        *
+        * @param $desc String: the test name
+        * @param $result String: expected HTML output
+        * @param $html String: actual HTML output
+        * @return Boolean
+        */
+       protected function showFailure( $desc, $result, $html ) {
+               if ( $this->showFailure ) {
+                       if ( !$this->showProgress ) {
+                               # In quiet mode we didn't show the 'Testing' message before the
+                               # test, in case it succeeded. Show it now:
+                               $this->showTesting( $desc );
+                       }
+
+                       print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
+
+                       if ( $this->showOutput ) {
+                               print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
+                       }
+
+                       if ( $this->showDiffs ) {
+                               print $this->quickDiff( $result, $html );
+                               if ( !$this->wellFormed( $html ) ) {
+                                       print "XML error: $this->mXmlError\n";
+                               }
+                       }
+               }
+
+               return false;
+       }
+
+       /**
+        * Run given strings through a diff and return the (colorized) output.
+        * Requires writable /tmp directory and a 'diff' command in the PATH.
+        *
+        * @param $input String
+        * @param $output String
+        * @param $inFileTail String: tailing for the input file name
+        * @param $outFileTail String: tailing for the output file name
+        * @return String
+        */
+       protected function quickDiff( $input, $output, $inFileTail = 'expected', $outFileTail = 'actual' ) {
+               $prefix = wfTempDir() . "/mwParser-" . mt_rand();
+
+               $infile = "$prefix-$inFileTail";
+               $this->dumpToFile( $input, $infile );
+
+               $outfile = "$prefix-$outFileTail";
+               $this->dumpToFile( $output, $outfile );
+
+               $diff = `diff -au $infile $outfile`;
+               unlink( $infile );
+               unlink( $outfile );
+
+               return $this->colorDiff( $diff );
+       }
+
+       /**
+        * Write the given string to a file, adding a final newline.
+        *
+        * @param $data String
+        * @param $filename String
+        */
+       private function dumpToFile( $data, $filename ) {
+               $file = fopen( $filename, "wt" );
+               fwrite( $file, $data . "\n" );
+               fclose( $file );
+       }
+
+       /**
+        * Colorize unified diff output if set for ANSI color output.
+        * Subtractions are colored blue, additions red.
+        *
+        * @param $text String
+        * @return String
+        */
+       protected function colorDiff( $text ) {
+               return preg_replace(
+                       array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
+                       array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
+                                  $this->term->color( 31 ) . '$1' . $this->term->reset() ),
+                       $text );
+       }
+
+       /**
+        * Show "Reading tests from ..."
+        *
+        * @param $path String
+        */
+       public function showRunFile( $path ) {
+               print $this->term->color( 1 ) .
+                       "Reading tests from \"$path\"..." .
+                       $this->term->reset() .
+                       "\n";
+       }
+
+       /**
+        * Insert a temporary test article
+        * @param $name String: the title, including any prefix
+        * @param $text String: the article text
+        * @param $line Integer: the input line number, for reporting errors
+        */
+       static public function addArticle( $name, $text, $line = 'unknown' ) {
+               global $wgCapitalLinks;
+
+               $text = self::chomp($text);
+
+               $oldCapitalLinks = $wgCapitalLinks;
+               $wgCapitalLinks = true; // We only need this from SetupGlobals() See r70917#c8637
+
+               $name = self::chomp( $name );
+               $title = Title::newFromText( $name );
+
+               if ( is_null( $title ) ) {
+                       wfDie( "invalid title ('$name' => '$title') at line $line\n" );
+               }
+
+               $aid = $title->getArticleID( Title::GAID_FOR_UPDATE );
+
+               if ( $aid != 0 ) {
+                       debug_print_backtrace();
+                       wfDie( "duplicate article '$name' at line $line\n" );
+               }
+
+               $art = new Article( $title );
+               $art->insertNewArticle( $text, '', false, false );
+
+               $wgCapitalLinks = $oldCapitalLinks;
+       }
+
+       /**
+        * Steal a callback function from the primary parser, save it for
+        * application to our scary parser. If the hook is not installed,
+        * abort processing of this file.
+        *
+        * @param $name String
+        * @return Bool true if tag hook is present
+        */
+       public function requireHook( $name ) {
+               global $wgParser;
+
+               $wgParser->firstCallInit( ); // make sure hooks are loaded.
+
+               if ( isset( $wgParser->mTagHooks[$name] ) ) {
+                       $this->hooks[$name] = $wgParser->mTagHooks[$name];
+               } else {
+                       echo "   This test suite requires the '$name' hook extension, skipping.\n";
+                       return false;
+               }
+
+               return true;
+       }
+
+       /**
+        * Steal a callback function from the primary parser, save it for
+        * application to our scary parser. If the hook is not installed,
+        * abort processing of this file.
+        *
+        * @param $name String
+        * @return Bool true if function hook is present
+        */
+       public function requireFunctionHook( $name ) {
+               global $wgParser;
+
+               $wgParser->firstCallInit( ); // make sure hooks are loaded.
+
+               if ( isset( $wgParser->mFunctionHooks[$name] ) ) {
+                       $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
+               } else {
+                       echo "   This test suite requires the '$name' function hook extension, skipping.\n";
+                       return false;
+               }
+
+               return true;
+       }
+
+       /*
+        * Run the "tidy" command on text if the $wgUseTidy
+        * global is true
+        *
+        * @param $text String: the text to tidy
+        * @return String
+        * @static
+        */
+       private function tidy( $text ) {
+               global $wgUseTidy;
+
+               if ( $wgUseTidy ) {
+                       $text = MWTidy::tidy( $text );
+               }
+
+               return $text;
+       }
+
+       private function wellFormed( $text ) {
+               $html =
+                       Sanitizer::hackDocType() .
+                       '<html>' .
+                       $text .
+                       '</html>';
+
+               $parser = xml_parser_create( "UTF-8" );
+
+               # case folding violates XML standard, turn it off
+               xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
+
+               if ( !xml_parse( $parser, $html, true ) ) {
+                       $err = xml_error_string( xml_get_error_code( $parser ) );
+                       $position = xml_get_current_byte_index( $parser );
+                       $fragment = $this->extractFragment( $html, $position );
+                       $this->mXmlError = "$err at byte $position:\n$fragment";
+                       xml_parser_free( $parser );
+
+                       return false;
+               }
+
+               xml_parser_free( $parser );
+
+               return true;
+       }
+
+       private function extractFragment( $text, $position ) {
+               $start = max( 0, $position - 10 );
+               $before = $position - $start;
+               $fragment = '...' .
+                       $this->term->color( 34 ) .
+                       substr( $text, $start, $before ) .
+                       $this->term->color( 0 ) .
+                       $this->term->color( 31 ) .
+                       $this->term->color( 1 ) .
+                       substr( $text, $position, 1 ) .
+                       $this->term->color( 0 ) .
+                       $this->term->color( 34 ) .
+                       substr( $text, $position + 1, 9 ) .
+                       $this->term->color( 0 ) .
+                       '...';
+               $display = str_replace( "\n", ' ', $fragment );
+               $caret = '   ' .
+                       str_repeat( ' ', $before ) .
+                       $this->term->color( 31 ) .
+                       '^' .
+                       $this->term->color( 0 );
+
+               return "$display\n$caret";
+       }
+
+       static function getFakeTimestamp( &$parser, &$ts ) {
+               $ts = 123;
+               return true;
+       }
+}