parserTest.inc
507a6aece270master

parserTest.inc
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			<?php
			/**
			* Helper code for the MediaWiki parser test suite. Some code is duplicated
			* in PHPUnit's NewParserTests.php, so you'll probably want to update both
			* at the same time.
			*
			* Copyright © 2004, 2010 Brion Vibber <[email protected]>
			* https://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 Testing
			*/
			use MediaWiki\MediaWikiServices;

			/**
			* @ingroup Testing
			*/
			class ParserTest {
			/**
			* @var bool $color whereas output should be colorized
			*/
			private $color;

			/**
			* @var bool $showOutput Show test output
			*/
			private $showOutput;

			/**
			* @var bool $useTemporaryTables Use temporary tables for the temporary database
			*/
			private $useTemporaryTables = true;

			/**
			* @var bool $databaseSetupDone True if the database has been set up
			*/
			private $databaseSetupDone = false;

			/**
			* Our connection to the database
			* @var DatabaseBase
			*/
			private $db;

			/**
			* Database clone helper
			* @var CloneDatabase
			*/
			private $dbClone;

			/**
			* @var DjVuSupport
			*/
			private $djVuSupport;

			/**
			* @var TidySupport
			*/
			private $tidySupport;

			private $maxFuzzTestLength = 300;
			private $fuzzSeed = 0;
			private $memoryLimit = 50;
			private $uploadDir = null;

			public $regex = "";
			private $savedGlobals = [];
			private $useDwdiff = false;
			private $markWhitespace = false;
			private $normalizationFunctions = [];

			/**
			* Sets terminal colorization and diff/quick modes depending on OS and
			* command-line options (--color and --quick).
			* @param array $options
			*/
			public function __construct( $options = [] ) {
			# Only colorize output if stdout is a terminal.
			$this->color = !wfIsWindows() && Maintenance::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'] );
			$this->useDwdiff = isset( $options['dwdiff'] );
			$this->markWhitespace = isset( $options['mark-ws'] );

			if ( isset( $options['norm'] ) ) {
			foreach ( explode( ',', $options['norm'] ) as $func ) {
			if ( in_array( $func, [ 'removeTbody', 'trimWhitespace' ] ) ) {
			$this->normalizationFunctions[] = $func;
			} else {
			echo "Warning: unknown normalization option \"$func\"\n";
			}
			}
			}

			if ( isset( $options['filter'] ) ) {
			$options['regex'] = $options['filter'];
			}

			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 ( $this->keepUploads ) {
			$this->uploadDir = wfTempDir() . '/mwParser-images';
			} else {
			$this->uploadDir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
			}

			if ( isset( $options['seed'] ) ) {
			$this->fuzzSeed = intval( $options['seed'] ) - 1;
			}

			$this->runDisabled = isset( $options['run-disabled'] );
			$this->runParsoid = isset( $options['run-parsoid'] );

			$this->djVuSupport = new DjVuSupport();
			$this->tidySupport = new TidySupport();
			if ( !$this->tidySupport->isEnabled() ) {
			echo "Warning: tidy is not installed, skipping some tests\n";
			}

			if ( !extension_loaded( 'gd' ) ) {
			echo "Warning: GD extension is not present, thumbnailing tests will probably fail\n";
			}

			$this->hooks = [];
			$this->functionHooks = [];
			$this->transparentHooks = [];
			$this->setUp();
			}

			function setUp() {
			global $wgParser, $wgParserConf, $IP, $messageMemc, $wgMemc,
			$wgUser, $wgLang, $wgOut, $wgRequest, $wgStyleDirectory,
			$wgExtraNamespaces, $wgNamespaceAliases, $wgNamespaceProtection, $wgLocalFileRepo,
			$wgExtraInterlanguageLinkPrefixes, $wgLocalInterwikis,
			$parserMemc, $wgThumbnailScriptPath, $wgScriptPath, $wgResourceBasePath,
			$wgArticlePath, $wgScript, $wgStylePath, $wgExtensionAssetsPath,
			$wgMainCacheType, $wgMessageCacheType, $wgParserCacheType, $wgLockManagers;

			$wgScriptPath = '';
			$wgScript = '/index.php';
			$wgStylePath = '/skins';
			$wgResourceBasePath = '';
			$wgExtensionAssetsPath = '/extensions';
			$wgArticlePath = '/wiki/$1';
			$wgThumbnailScriptPath = false;
			$wgLockManagers = [ [
			'name' => 'fsLockManager',
			'class' => 'FSLockManager',
			'lockDirectory' => $this->uploadDir . '/lockdir',
			], [
			'name' => 'nullLockManager',
			'class' => 'NullLockManager',
			] ];
			$wgLocalFileRepo = [
			'class' => 'LocalRepo',
			'name' => 'local',
			'url' => 'http://example.com/images',
			'hashLevels' => 2,
			'transformVia404' => false,
			'backend' => new FSFileBackend( [
			'name' => 'local-backend',
			'wikiId' => wfWikiID(),
			'containerPaths' => [
			'local-public' => $this->uploadDir . '/public',
			'local-thumb' => $this->uploadDir . '/thumb',
			'local-temp' => $this->uploadDir . '/temp',
			'local-deleted' => $this->uploadDir . '/deleted',
			]
			] )
			];
			$wgNamespaceProtection[NS_MEDIAWIKI] = 'editinterface';
			$wgNamespaceAliases['Image'] = NS_FILE;
			$wgNamespaceAliases['Image_talk'] = NS_FILE_TALK;
			# add a namespace shadowing a interwiki link, to test
			# proper precedence when resolving links. (bug 51680)
			$wgExtraNamespaces[100] = 'MemoryAlpha';
			$wgExtraNamespaces[101] = 'MemoryAlpha talk';

			// XXX: tests won't run without this (for CACHE_DB)
			if ( $wgMainCacheType === CACHE_DB ) {
			$wgMainCacheType = CACHE_NONE;
			}
			if ( $wgMessageCacheType === CACHE_DB ) {
			$wgMessageCacheType = CACHE_NONE;
			}
			if ( $wgParserCacheType === CACHE_DB ) {
			$wgParserCacheType = CACHE_NONE;
			}

			DeferredUpdates::clearPendingUpdates();
			$wgMemc = wfGetMainCache(); // checks $wgMainCacheType
			$messageMemc = wfGetMessageCacheStorage();
			$parserMemc = wfGetParserCacheStorage();

			RequestContext::resetMain();
			$context = new RequestContext;
			$wgUser = new User;
			$wgLang = $context->getLanguage();
			$wgOut = $context->getOutput();
			$wgRequest = $context->getRequest();
			$wgParser = new StubObject( 'wgParser', $wgParserConf['class'], [ $wgParserConf ] );

			if ( $wgStyleDirectory === false ) {
			$wgStyleDirectory = "$IP/skins";
			}

			self::setupInterwikis();
			$wgLocalInterwikis = [ 'local', 'mi' ];
			// "extra language links"
			// see https://gerrit.wikimedia.org/r/111390
			array_push( $wgExtraInterlanguageLinkPrefixes, 'mul' );

			// Reset namespace cache
			MWNamespace::getCanonicalNamespaces( true );
			Language::factory( 'en' )->resetNamespaces();
			}

			/**
			* Insert hardcoded interwiki in the lookup table.
			*
			* This function insert a set of well known interwikis that are used in
			* the parser tests. They can be considered has fixtures are injected in
			* the interwiki cache by using the 'InterwikiLoadPrefix' hook.
			* Since we are not interested in looking up interwikis in the database,
			* the hook completely replace the existing mechanism (hook returns false).
			*/
			public static function setupInterwikis() {
			# Hack: insert a few Wikipedia in-project interwiki prefixes,
			# for testing inter-language links
			Hooks::register( 'InterwikiLoadPrefix', function ( $prefix, &$iwData ) {
			static $testInterwikis = [
			'local' => [
			'iw_url' => 'http://doesnt.matter.org/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 0 ],
			'wikipedia' => [
			'iw_url' => 'http://en.wikipedia.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 0 ],
			'meatball' => [
			'iw_url' => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 0 ],
			'memoryalpha' => [
			'iw_url' => 'http://www.memory-alpha.org/en/index.php/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 0 ],
			'zh' => [
			'iw_url' => 'http://zh.wikipedia.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 1 ],
			'es' => [
			'iw_url' => 'http://es.wikipedia.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 1 ],
			'fr' => [
			'iw_url' => 'http://fr.wikipedia.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 1 ],
			'ru' => [
			'iw_url' => 'http://ru.wikipedia.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 1 ],
			'mi' => [
			'iw_url' => 'http://mi.wikipedia.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 1 ],
			'mul' => [
			'iw_url' => 'http://wikisource.org/wiki/$1',
			'iw_api' => '',
			'iw_wikiid' => '',
			'iw_local' => 1 ],
			];
			if ( array_key_exists( $prefix, $testInterwikis ) ) {
			$iwData = $testInterwikis[$prefix];
			}

			// We only want to rely on the above fixtures
			return false;
			} );// hooks::register
			}

			/**
			* Remove the hardcoded interwiki lookup table.
			*/
			public static function tearDownInterwikis() {
			Hooks::clear( 'InterwikiLoadPrefix' );
			}

			/**
			* Reset the Title-related services that need resetting
			* for each test
			*/
			public static function resetTitleServices() {
			$services = MediaWikiServices::getInstance();
			$services->resetServiceForTesting( 'TitleFormatter' );
			$services->resetServiceForTesting( 'TitleParser' );
			$services->resetServiceForTesting( '_MediaWikiTitleCodec' );
			$services->resetServiceForTesting( 'LinkRenderer' );
			$services->resetServiceForTesting( 'LinkRendererFactory' );
			}

			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 );
			} else {
			$this->recorder = new TestRecorder( $this );
			}
			}

			/**
			* Remove last character if it is a newline
			* @group utility
			* @param string $s
			* @return string
			*/
			public static 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
			* @param array $filenames
			*/
			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";
			printf( "string(%d) \"%s\"\n\n", strlen( $input ), $input );
			echo "$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
			* @param array $filenames
			* @return string
			*/
			function getFuzzInput( $filenames ) {
			$dict = '';

			foreach ( $filenames as $filename ) {
			$contents = file_get_contents( $filename );
			preg_match_all(
			'/!!\s(input\|wikitext)\n(.?)\n!!\s(result\|html\|html\/\\|html\/php)/s',
			$contents,
			$matches
			);

			foreach ( $matches[1] as $match ) {
			$dict .= $match . "\n";
			}
			}

			return $dict;
			}

			/**
			* Get a memory usage breakdown
			* @return array
			*/
			function getMemoryBreakdown() {
			$memStats = [];

			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 array $filenames Array of strings
			* @return bool True if passed all tests, false if any tests failed.
			*/
			public function runTestsFromFiles( $filenames ) {
			$ok = false;

			// be sure, ParserTest::addArticle has correct language set,
			// so that system messages gets into the right language cache
			$GLOBALS['wgLanguageCode'] = 'en';
			$GLOBALS['wgContLang'] = Language::factory( 'en' );

			$this->recorder->start();
			try {
			$this->setupDatabase();
			$ok = true;

			foreach ( $filenames as $filename ) {
			echo "Running parser tests from: $filename\n";
			$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'], $t['subtest'], $result );
			}

			if ( $this->showProgress ) {
			print "\n";
			}

			return $ok;
			}

			/**
			* Get a Parser object
			*
			* @param string $preprocessor
			* @return Parser
			*/
			function getParser( $preprocessor = null ) {
			global $wgParserConf;

			$class = $wgParserConf['class'];
			$parser = new $class( [ '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 );
			}

			foreach ( $this->transparentHooks as $tag => $callback ) {
			$parser->setTransparentTagHook( $tag, $callback );
			}

			Hooks::run( 'ParserTestParser', [ &$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 string $desc Test's description
			* @param string $input Wikitext to try rendering
			* @param string $result Result to output
			* @param array $opts Test's options
			* @param string $config Overrides for global variables, one per line
			* @return bool
			*/
			public function runTest( $desc, $input, $result, $opts, $config ) {
			if ( $this->showProgress ) {
			$this->showTesting( $desc );
			}

			$opts = $this->parseOptions( $opts );
			$context = $this->setupGlobals( $opts, $config );

			$user = $context->getUser();
			$options = ParserOptions::newFromContext( $context );

			if ( isset( $opts['djvu'] ) ) {
			if ( !$this->djVuSupport->isEnabled() ) {
			return $this->showSkipped();
			}
			}

			if ( isset( $opts['tidy'] ) ) {
			if ( !$this->tidySupport->isEnabled() ) {
			return $this->showSkipped();
			} else {
			$options->setTidy( true );
			}
			}

			if ( isset( $opts['title'] ) ) {
			$titleText = $opts['title'];
			} else {
			$titleText = 'Parser test';
			}

			ObjectCache::getMainWANInstance()->clearProcessCache();
			$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, $title );
			} 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'] ) ) {
			$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 );
			$output->setTOCEnabled( !isset( $opts['notoc'] ) );
			$out = $output->getText();
			if ( isset( $opts['tidy'] ) ) {
			$out = preg_replace( '/\s+$/', '', $out );
			}

			if ( isset( $opts['showtitle'] ) ) {
			if ( $output->getTitleText() ) {
			$title = $output->getTitleText();
			}

			$out = "$title\n$out";
			}

			if ( isset( $opts['showindicators'] ) ) {
			$indicators = '';
			foreach ( $output->getIndicators() as $id => $content ) {
			$indicators .= "$id=$content\n";
			}
			$out = $indicators . $out;
			}

			if ( isset( $opts['ill'] ) ) {
			$out = implode( ' ', $output->getLanguageLinks() );
			} elseif ( isset( $opts['cat'] ) ) {
			$outputPage = $context->getOutput();
			$outputPage->addCategoryLinks( $output->getCategories() );
			$cats = $outputPage->getCategoryLinks();

			if ( isset( $cats['normal'] ) ) {
			$out = implode( ' ', $cats['normal'] );
			} else {
			$out = '';
			}
			}
			}

			$this->teardownGlobals();

			if ( count( $this->normalizationFunctions ) ) {
			$result = ParserTestResultNormalizer::normalize( $result, $this->normalizationFunctions );
			$out = ParserTestResultNormalizer::normalize( $out, $this->normalizationFunctions );
			}

			$testResult = new ParserTestResult( $desc );
			$testResult->expected = $result;
			$testResult->actual = $out;

			return $this->showTestResult( $testResult );
			}

			/**
			* Refactored in 1.22 to use ParserTestResult
			* @param ParserTestResult $testResult
			* @return bool
			*/
			function showTestResult( ParserTestResult $testResult ) {
			if ( $testResult->isSuccess() ) {
			$this->showSuccess( $testResult );
			return true;
			} else {
			$this->showFailure( $testResult );
			return false;
			}
			}

			/**
			* Use a regex to find out the value of an option
			* @param string $key Name of option val to retrieve
			* @param array $opts Options array to look in
			* @param mixed $default Default value returned if not found
			* @return mixed
			*/
			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 = [];
			// foo
			// foo=bar
			// foo="bar baz"
			// foo=[[bar baz]]
			// foo=bar,"baz quux"
			// foo={...json...}
			$defs = '(?(DEFINE)
			(?<qstr> # Quoted string
			"
			(?:[^\\\\"] \| \\\\.)*
			"
			)
			(?<json>
			\{ # Open bracket
			(?:
			[^"{}] \| # Not a quoted string or object, or
			(?&qstr) \| # A quoted string, or
			(?&json) # A json object (recursively)
			)*
			\} # Close bracket
			)
			(?<value>
			(?:
			(?&qstr) # Quoted val
			\|
			\[\[
			[^]]* # Link target
			\]\]
			\|
			[\w-]+ # Plain word
			\|
			(?&json) # JSON object
			)
			)
			)';
			$regex = '/' . $defs . '\b
			(?<k>[\w-]+) # Key
			\b
			(?:\s*
			= # First sub-value
			\s*
			(?<v>
			(?&value)
			(?:\s*
			, # Sub-vals 1..N
			\s*
			(?&value)
			)*
			)
			)?
			/x';
			$valueregex = '/' . $defs . '(?&value)/x';

			if ( preg_match_all( $regex, $instring, $matches, PREG_SET_ORDER ) ) {
			foreach ( $matches as $bits ) {
			$key = strtolower( $bits['k'] );
			if ( !isset( $bits['v'] ) ) {
			$opts[$key] = true;
			} else {
			preg_match_all( $valueregex, $bits['v'], $vmatches );
			$opts[$key] = array_map( [ $this, 'cleanupOption' ], $vmatches[0] );
			if ( count( $opts[$key] ) == 1 ) {
			$opts[$key] = $opts[$key][0];
			}
			}
			}
			}
			return $opts;
			}

			private function cleanupOption( $opt ) {
			if ( substr( $opt, 0, 1 ) == '"' ) {
			return stripcslashes( substr( $opt, 1, -1 ) );
			}

			if ( substr( $opt, 0, 2 ) == '[[' ) {
			return substr( $opt, 2, -2 );
			}

			if ( substr( $opt, 0, 1 ) == '{' ) {
			return FormatJson::decode( $opt, true );
			}
			return $opt;
			}

			/**
			* Set up the global variables for a consistent environment for each test.
			* Ideally this should replace the global configuration entirely.
			* @param string $opts
			* @param string $config
			* @return RequestContext
			*/
			private function setupGlobals( $opts = '', $config = '' ) {
			global $IP;

			# 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 = [
			'wgServer' => 'http://example.org',
			'wgServerName' => 'example.org',
			'wgScript' => '/index.php',
			'wgScriptPath' => '',
			'wgArticlePath' => '/wiki/$1',
			'wgActionPaths' => [],
			'wgLockManagers' => [ [
			'name' => 'fsLockManager',
			'class' => 'FSLockManager',
			'lockDirectory' => $this->uploadDir . '/lockdir',
			], [
			'name' => 'nullLockManager',
			'class' => 'NullLockManager',
			] ],
			'wgLocalFileRepo' => [
			'class' => 'LocalRepo',
			'name' => 'local',
			'url' => 'http://example.com/images',
			'hashLevels' => 2,
			'transformVia404' => false,
			'backend' => new FSFileBackend( [
			'name' => 'local-backend',
			'wikiId' => wfWikiID(),
			'containerPaths' => [
			'local-public' => $this->uploadDir,
			'local-thumb' => $this->uploadDir . '/thumb',
			'local-temp' => $this->uploadDir . '/temp',
			'local-deleted' => $this->uploadDir . '/delete',
			]
			] )
			],
			'wgEnableUploads' => self::getOptionValue( 'wgEnableUploads', $opts, true ),
			'wgUploadNavigationUrl' => false,
			'wgStylePath' => '/skins',
			'wgSitename' => 'MediaWiki',
			'wgLanguageCode' => $lang,
			'wgDBprefix' => $this->db->getType() != 'oracle' ? 'parsertest_' : 'pt_',
			'wgRawHtml' => self::getOptionValue( 'wgRawHtml', $opts, false ),
			'wgLang' => null,
			'wgContLang' => null,
			'wgNamespacesWithSubpages' => [ 0 => isset( $opts['subpage'] ) ],
			'wgMaxTocLevel' => $maxtoclevel,
			'wgCapitalLinks' => true,
			'wgNoFollowLinks' => true,
			'wgNoFollowDomainExceptions' => [ 'no-nofollow.org' ],
			'wgThumbnailScriptPath' => false,
			'wgUseImageResize' => true,
			'wgSVGConverter' => 'null',
			'wgSVGConverters' => [ 'null' => 'echo "1">$output' ],
			'wgLocaltimezone' => 'UTC',
			'wgAllowExternalImages' => self::getOptionValue( 'wgAllowExternalImages', $opts, true ),
			'wgThumbLimits' => [ self::getOptionValue( 'thumbsize', $opts, 180 ) ],
			'wgDefaultLanguageVariant' => $variant,
			'wgVariantArticlePath' => false,
			'wgGroupPermissions' => [ '*' => [
			'createaccount' => true,
			'read' => true,
			'edit' => true,
			'createpage' => true,
			'createtalk' => true,
			] ],
			'wgNamespaceProtection' => [ NS_MEDIAWIKI => 'editinterface' ],
			'wgDefaultExternalStore' => [],
			'wgForeignFileRepos' => [],
			'wgLinkHolderBatchSize' => $linkHolderBatchSize,
			'wgExperimentalHtmlIds' => false,
			'wgExternalLinkTarget' => false,
			'wgHtml5' => true,
			'wgAdaptiveMessageCache' => true,
			'wgDisableLangConversion' => false,
			'wgDisableTitleConversion' => false,
			// Tidy options.
			'wgUseTidy' => isset( $opts['tidy'] ),
			'wgTidyConfig' => null,
			'wgDebugTidy' => false,
			'wgTidyConf' => $IP . '/includes/tidy/tidy.conf',
			'wgTidyOpts' => '',
			'wgTidyInternal' => $this->tidySupport->isInternal(),
			];

			if ( $config ) {
			$configLines = explode( "\n", $config );

			foreach ( $configLines as $line ) {
			list( $var, $value ) = explode( '=', $line, 2 );

			$settings[$var] = eval( "return $value;" );
			}
			}

			$this->savedGlobals = [];

			/** @since 1.20 */
			Hooks::run( 'ParserTestGlobals', [ &$settings ] );

			foreach ( $settings as $var => $val ) {
			if ( array_key_exists( $var, $GLOBALS ) ) {
			$this->savedGlobals[$var] = $GLOBALS[$var];
			}

			$GLOBALS[$var] = $val;
			}

			// Must be set before $context as user language defaults to $wgContLang
			$GLOBALS['wgContLang'] = Language::factory( $lang );
			$GLOBALS['wgMemc'] = new EmptyBagOStuff;

			RequestContext::resetMain();
			$context = RequestContext::getMain();
			$GLOBALS['wgLang'] = $context->getLanguage();
			$GLOBALS['wgOut'] = $context->getOutput();
			$GLOBALS['wgUser'] = $context->getUser();

			// We (re)set $wgThumbLimits to a single-element array above.
			$context->getUser()->setOption( 'thumbsize', 0 );

			global $wgHooks;

			$wgHooks['ParserTestParser'][] = 'ParserTestParserHook::setup';
			$wgHooks['ParserGetVariableValueTs'][] = 'ParserTest::getFakeTimestamp';

			MagicWord::clearCache();
			MWTidy::destroySingleton();
			RepoGroup::destroySingleton();

			self::resetTitleServices();

			return $context;
			}

			/**
			* List of temporary tables to create, without prefix.
			* Some of these probably aren't necessary.
			* @return array
			*/
			private function listTables() {
			$tables = [ 'user', 'user_properties', 'user_former_groups', 'page', 'page_restrictions',
			'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
			'categorylinks', 'templatelinks', 'externallinks', 'langlinks', 'iwlinks',
			'site_stats', 'ipblocks', 'image', 'oldimage',
			'recentchanges', 'watchlist', 'interwiki', 'logging', 'log_search',
			'querycache', 'objectcache', 'job', 'l10n_cache', 'redirect', 'querycachetwo',
			'archive', 'user_groups', 'page_props', 'category'
			];

			if ( in_array( $this->db->getType(), [ '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.
			Hooks::run( 'ParserTestTables', [ &$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;

			if ( $this->databaseSetupDone ) {
			return;
			}

			$this->db = wfGetDB( DB_MASTER );
			$dbType = $this->db->getType();

			if ( $wgDBprefix === 'parsertest_' \|\| ( $dbType == 'oracle' && $wgDBprefix === 'pt_' ) ) {
			throw new MWException( 'setupDatabase should be called before setupGlobals' );
			}

			$this->databaseSetupDone = true;

			# SqlBagOStuff broke when using temporary tables on r40209 (bug 15892).
			# It seems to have been fixed since (r55079?), but regressed at some point before r85701.
			# This works around it for now...
			ObjectCache::$instances[CACHE_DB] = new HashBagOStuff;

			# CREATE TEMPORARY TABLE breaks if there is more than one server
			if ( wfGetLB()->getServerCount() != 1 ) {
			$this->useTemporaryTables = false;
			}

			$temporary = $this->useTemporaryTables \|\| $dbType == 'postgres';
			$prefix = $dbType != 'oracle' ? 'parsertest_' : 'pt_';

			$this->dbClone = new CloneDatabase( $this->db, $this->listTables(), $prefix );
			$this->dbClone->useTemporaryTables( $temporary );
			$this->dbClone->cloneTableStructure();

			if ( $dbType == 'oracle' ) {
			$this->db->query( 'BEGIN FILL_WIKI_INFO; END;' );
			# Insert 0 user to prevent FK violations

			# Anonymous user
			$this->db->insert( 'user', [
			'user_id' => 0,
			'user_name' => 'Anonymous' ] );
			}

			# Update certain things in site_stats
			$this->db->insert( 'site_stats',
			[ 'ss_row_id' => 1, 'ss_images' => 2, 'ss_good_articles' => 1 ] );

			# Reinitialise the LocalisationCache to match the database state
			Language::getLocalisationCache()->unloadAll();

			# Clear the message cache
			MessageCache::singleton()->clear();

			// Remember to update newParserTests.php after changing the below
			// (and it uses a slightly different syntax just for teh lulz)
			$this->setupUploadDir();
			$user = User::createNew( 'WikiSysop' );
			$image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.jpg' ) );
			# note that the size/width/height/bits/etc of the file
			# are actually set by inspecting the file itself; the arguments
			# to recordUpload2 have no effect. That said, we try to make things
			# match up so it is less confusing to readers of the code & tests.
			$image->recordUpload2( '', 'Upload of some lame file', 'Some lame file', [
			'size' => 7881,
			'width' => 1941,
			'height' => 220,
			'bits' => 8,
			'media_type' => MEDIATYPE_BITMAP,
			'mime' => 'image/jpeg',
			'metadata' => serialize( [] ),
			'sha1' => Wikimedia\base_convert( '1', 16, 36, 31 ),
			'fileExists' => true
			], $this->db->timestamp( '20010115123500' ), $user );

			$image = wfLocalFile( Title::makeTitle( NS_FILE, 'Thumb.png' ) );
			# again, note that size/width/height below are ignored; see above.
			$image->recordUpload2( '', 'Upload of some lame thumbnail', 'Some lame thumbnail', [
			'size' => 22589,
			'width' => 135,
			'height' => 135,
			'bits' => 8,
			'media_type' => MEDIATYPE_BITMAP,
			'mime' => 'image/png',
			'metadata' => serialize( [] ),
			'sha1' => Wikimedia\base_convert( '2', 16, 36, 31 ),
			'fileExists' => true
			], $this->db->timestamp( '20130225203040' ), $user );

			$image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.svg' ) );
			$image->recordUpload2( '', 'Upload of some lame SVG', 'Some lame SVG', [
			'size' => 12345,
			'width' => 240,
			'height' => 180,
			'bits' => 0,
			'media_type' => MEDIATYPE_DRAWING,
			'mime' => 'image/svg+xml',
			'metadata' => serialize( [] ),
			'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
			'fileExists' => true
			], $this->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', [
			'size' => 12345,
			'width' => 320,
			'height' => 240,
			'bits' => 24,
			'media_type' => MEDIATYPE_BITMAP,
			'mime' => 'image/jpeg',
			'metadata' => serialize( [] ),
			'sha1' => Wikimedia\base_convert( '3', 16, 36, 31 ),
			'fileExists' => true
			], $this->db->timestamp( '20010115123500' ), $user );

			$image = wfLocalFile( Title::makeTitle( NS_FILE, 'Video.ogv' ) );
			$image->recordUpload2( '', 'A pretty movie', 'Will it play', [
			'size' => 12345,
			'width' => 320,
			'height' => 240,
			'bits' => 0,
			'media_type' => MEDIATYPE_VIDEO,
			'mime' => 'application/ogg',
			'metadata' => serialize( [] ),
			'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
			'fileExists' => true
			], $this->db->timestamp( '20010115123500' ), $user );

			$image = wfLocalFile( Title::makeTitle( NS_FILE, 'Audio.oga' ) );
			$image->recordUpload2( '', 'An awesome hitsong', 'Will it play', [
			'size' => 12345,
			'width' => 0,
			'height' => 0,
			'bits' => 0,
			'media_type' => MEDIATYPE_AUDIO,
			'mime' => 'application/ogg',
			'metadata' => serialize( [] ),
			'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
			'fileExists' => true
			], $this->db->timestamp( '20010115123500' ), $user );

			# A DjVu file
			$image = wfLocalFile( Title::makeTitle( NS_FILE, 'LoremIpsum.djvu' ) );
			$image->recordUpload2( '', 'Upload a DjVu', 'A DjVu', [
			'size' => 3249,
			'width' => 2480,
			'height' => 3508,
			'bits' => 0,
			'media_type' => MEDIATYPE_BITMAP,
			'mime' => 'image/vnd.djvu',
			'metadata' => '<?xml version="1.0" ?>
			<!DOCTYPE DjVuXML PUBLIC "-//W3C//DTD DjVuXML 1.1//EN" "pubtext/DjVuXML-s.dtd">
			<DjVuXML>
			<HEAD></HEAD>
			<BODY><OBJECT height="3508" width="2480">
			<PARAM name="DPI" value="300" />
			<PARAM name="GAMMA" value="2.2" />
			</OBJECT>
			<OBJECT height="3508" width="2480">
			<PARAM name="DPI" value="300" />
			<PARAM name="GAMMA" value="2.2" />
			</OBJECT>
			<OBJECT height="3508" width="2480">
			<PARAM name="DPI" value="300" />
			<PARAM name="GAMMA" value="2.2" />
			</OBJECT>
			<OBJECT height="3508" width="2480">
			<PARAM name="DPI" value="300" />
			<PARAM name="GAMMA" value="2.2" />
			</OBJECT>
			<OBJECT height="3508" width="2480">
			<PARAM name="DPI" value="300" />
			<PARAM name="GAMMA" value="2.2" />
			</OBJECT>
			</BODY>
			</DjVuXML>',
			'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
			'fileExists' => true
			], $this->db->timestamp( '20010115123600' ), $user );
			}

			public function teardownDatabase() {
			if ( !$this->databaseSetupDone ) {
			$this->teardownGlobals();
			return;
			}
			$this->teardownUploadDir( $this->uploadDir );

			$this->dbClone->destroy();
			$this->databaseSetupDone = false;

			if ( $this->useTemporaryTables ) {
			if ( $this->db->getType() == 'sqlite' ) {
			# Under SQLite the searchindex table is virtual and need
			# to be explicitly destroyed. See bug 29912
			# See also MediaWikiTestCase::destroyDB()
			wfDebug( __METHOD__ . " explicitly destroying sqlite virtual table parsertest_searchindex\n" );
			$this->db->query( "DROP TABLE `parsertest_searchindex`" );
			}
			# Don't need to do anything
			$this->teardownGlobals();
			return;
			}

			$tables = $this->listTables();

			foreach ( $tables as $table ) {
			if ( $this->db->getType() == 'oracle' ) {
			$this->db->query( "DROP TABLE pt_$table DROP CONSTRAINTS" );
			} else {
			$this->db->query( "DROP TABLE `parsertest_$table`" );
			}
			}

			if ( $this->db->getType() == 'oracle' ) {
			$this->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;

			$dir = $this->uploadDir;
			if ( $this->keepUploads && is_dir( $dir ) ) {
			return;
			}

			// wfDebug( "Creating upload directory $dir\n" );
			if ( file_exists( $dir ) ) {
			wfDebug( "Already exists!\n" );
			return;
			}

			wfMkdirParents( $dir . '/3/3a', null, __METHOD__ );
			copy( "$IP/tests/phpunit/data/parser/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
			wfMkdirParents( $dir . '/e/ea', null, __METHOD__ );
			copy( "$IP/tests/phpunit/data/parser/wiki.png", "$dir/e/ea/Thumb.png" );
			wfMkdirParents( $dir . '/0/09', null, __METHOD__ );
			copy( "$IP/tests/phpunit/data/parser/headbg.jpg", "$dir/0/09/Bad.jpg" );
			wfMkdirParents( $dir . '/f/ff', null, __METHOD__ );
			file_put_contents( "$dir/f/ff/Foobar.svg",
			'<?xml version="1.0" encoding="utf-8"?>' .
			'<svg xmlns="http://www.w3.org/2000/svg"' .
			' version="1.1" width="240" height="180"/>' );
			wfMkdirParents( $dir . '/5/5f', null, __METHOD__ );
			copy( "$IP/tests/phpunit/data/parser/LoremIpsum.djvu", "$dir/5/5f/LoremIpsum.djvu" );
			wfMkdirParents( $dir . '/0/00', null, __METHOD__ );
			copy( "$IP/tests/phpunit/data/parser/320x240.ogv", "$dir/0/00/Video.ogv" );
			wfMkdirParents( $dir . '/4/41', null, __METHOD__ );
			copy( "$IP/tests/phpunit/data/media/say-test.ogg", "$dir/4/41/Audio.oga" );

			return;
			}

			/**
			* Restore default values and perform any necessary clean-up
			* after each test runs.
			*/
			private function teardownGlobals() {
			RepoGroup::destroySingleton();
			FileBackendGroup::destroySingleton();
			LockManagerGroup::destroySingletons();
			LinkCache::singleton()->clear();
			MWTidy::destroySingleton();

			foreach ( $this->savedGlobals as $var => $val ) {
			$GLOBALS[$var] = $val;
			}
			}

			/**
			* Remove the dummy uploads directory
			* @param string $dir
			*/
			private function teardownUploadDir( $dir ) {
			if ( $this->keepUploads ) {
			return;
			}

			// delete the files first, then the dirs.
			self::deleteFiles(
			[
			"$dir/3/3a/Foobar.jpg",
			"$dir/thumb/3/3a/Foobar.jpg/*.jpg",
			"$dir/e/ea/Thumb.png",
			"$dir/0/09/Bad.jpg",
			"$dir/5/5f/LoremIpsum.djvu",
			"$dir/thumb/5/5f/LoremIpsum.djvu/*-LoremIpsum.djvu.jpg",
			"$dir/f/ff/Foobar.svg",
			"$dir/thumb/f/ff/Foobar.svg/*-Foobar.svg.png",
			"$dir/math/f/a/5/fa50b8b616463173474302ca3e63586b.png",
			"$dir/0/00/Video.ogv",
			"$dir/thumb/0/00/Video.ogv/120px--Video.ogv.jpg",
			"$dir/thumb/0/00/Video.ogv/180px--Video.ogv.jpg",
			"$dir/thumb/0/00/Video.ogv/240px--Video.ogv.jpg",
			"$dir/thumb/0/00/Video.ogv/320px--Video.ogv.jpg",
			"$dir/thumb/0/00/Video.ogv/270px--Video.ogv.jpg",
			"$dir/thumb/0/00/Video.ogv/320px-seek=2-Video.ogv.jpg",
			"$dir/thumb/0/00/Video.ogv/320px-seek=3.3666666666667-Video.ogv.jpg",
			"$dir/4/41/Audio.oga",
			]
			);

			self::deleteDirs(
			[
			"$dir/3/3a",
			"$dir/3",
			"$dir/thumb/3/3a/Foobar.jpg",
			"$dir/thumb/3/3a",
			"$dir/thumb/3",
			"$dir/e/ea",
			"$dir/e",
			"$dir/f/ff/",
			"$dir/f/",
			"$dir/thumb/f/ff/Foobar.svg",
			"$dir/thumb/f/ff/",
			"$dir/thumb/f/",
			"$dir/0/00/",
			"$dir/0/09/",
			"$dir/0/",
			"$dir/5/5f",
			"$dir/5",
			"$dir/thumb/0/00/Video.ogv",
			"$dir/thumb/0/00",
			"$dir/thumb/0",
			"$dir/thumb/5/5f/LoremIpsum.djvu",
			"$dir/thumb/5/5f",
			"$dir/thumb/5",
			"$dir/thumb",
			"$dir/4/41",
			"$dir/4",
			"$dir/math/f/a/5",
			"$dir/math/f/a",
			"$dir/math/f",
			"$dir/math",
			"$dir/lockdir",
			"$dir",
			]
			);
			}

			/**
			* Delete the specified files, if they exist.
			* @param array $files Full paths to files to delete.
			*/
			private static function deleteFiles( $files ) {
			foreach ( $files as $pattern ) {
			foreach ( glob( $pattern ) as $file ) {
			if ( file_exists( $file ) ) {
			unlink( $file );
			}
			}
			}
			}

			/**
			* Delete the specified directories, if they exist. Must be empty.
			* @param array $dirs Full paths to directories to delete.
			*/
			private static function deleteDirs( $dirs ) {
			foreach ( $dirs as $dir ) {
			if ( is_dir( $dir ) ) {
			rmdir( $dir );
			}
			}
			}

			/**
			* "Running test $desc..."
			* @param string $desc
			*/
			protected function showTesting( $desc ) {
			print "Running test $desc... ";
			}

			/**
			* Print a happy success message.
			*
			* Refactored in 1.22 to use ParserTestResult
			*
			* @param ParserTestResult $testResult
			* @return bool
			*/
			protected function showSuccess( ParserTestResult $testResult ) {
			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.
			*
			* Refactored in 1.22 to use ParserTestResult
			*
			* @param ParserTestResult $testResult
			* @return bool
			*/
			protected function showFailure( ParserTestResult $testResult ) {
			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( $testResult->description );
			}

			print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";

			if ( $this->showOutput ) {
			print "--- Expected ---\n{$testResult->expected}\n";
			print "--- Actual ---\n{$testResult->actual}\n";
			}

			if ( $this->showDiffs ) {
			print $this->quickDiff( $testResult->expected, $testResult->actual );
			if ( !$this->wellFormed( $testResult->actual ) ) {
			print "XML error: $this->mXmlError\n";
			}
			}
			}

			return false;
			}

			/**
			* Print a skipped message.
			*
			* @return bool
			*/
			protected function showSkipped() {
			if ( $this->showProgress ) {
			print $this->term->color( '1;33' ) . 'SKIPPED' . $this->term->reset() . "\n";
			}

			return true;
			}

			/**
			* Run given strings through a diff and return the (colorized) output.
			* Requires writable /tmp directory and a 'diff' command in the PATH.
			*
			* @param string $input
			* @param string $output
			* @param string $inFileTail Tailing for the input file name
			* @param string $outFileTail Tailing for the output file name
			* @return string
			*/
			protected function quickDiff( $input, $output,
			$inFileTail = 'expected', $outFileTail = 'actual'
			) {
			if ( $this->markWhitespace ) {
			$pairs = [
			"\n" => '¶',
			' ' => '·',
			"\t" => '→'
			];
			$input = strtr( $input, $pairs );
			$output = strtr( $output, $pairs );
			}

			# Windows, or at least the fc utility, is retarded
			$slash = wfIsWindows() ? '\\' : '/';
			$prefix = wfTempDir() . "{$slash}mwParser-" . mt_rand();

			$infile = "$prefix-$inFileTail";
			$this->dumpToFile( $input, $infile );

			$outfile = "$prefix-$outFileTail";
			$this->dumpToFile( $output, $outfile );

			$shellInfile = wfEscapeShellArg( $infile );
			$shellOutfile = wfEscapeShellArg( $outfile );

			global $wgDiff3;
			// we assume that people with diff3 also have usual diff
			if ( $this->useDwdiff ) {
			$shellCommand = 'dwdiff -Pc';
			} else {
			$shellCommand = ( wfIsWindows() && !$wgDiff3 ) ? 'fc' : 'diff -au';
			}

			$diff = wfShellExec( "$shellCommand $shellInfile $shellOutfile" );

			unlink( $infile );
			unlink( $outfile );

			if ( $this->useDwdiff ) {
			return $diff;
			} else {
			return $this->colorDiff( $diff );
			}
			}

			/**
			* Write the given string to a file, adding a final newline.
			*
			* @param string $data
			* @param string $filename
			*/
			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 string $text
			* @return string
			*/
			protected function colorDiff( $text ) {
			return preg_replace(
			[ '/^(-.)$/m', '/^(\+.)$/m' ],
			[ $this->term->color( 34 ) . '$1' . $this->term->reset(),
			$this->term->color( 31 ) . '$1' . $this->term->reset() ],
			$text );
			}

			/**
			* Show "Reading tests from ..."
			*
			* @param string $path
			*/
			public function showRunFile( $path ) {
			print $this->term->color( 1 ) .
			"Reading tests from \"$path\"..." .
			$this->term->reset() .
			"\n";
			}

			/**
			* Insert a temporary test article
			* @param string $name The title, including any prefix
			* @param string $text The article text
			* @param int\|string $line The input line number, for reporting errors
			* @param bool\|string $ignoreDuplicate Whether to silently ignore duplicate pages
			* @throws Exception
			* @throws MWException
			*/
			public static function addArticle( $name, $text, $line = 'unknown', $ignoreDuplicate = '' ) {
			global $wgCapitalLinks;

			$oldCapitalLinks = $wgCapitalLinks;
			$wgCapitalLinks = true; // We only need this from SetupGlobals() See r70917#c8637

			$text = self::chomp( $text );
			$name = self::chomp( $name );

			$title = Title::newFromText( $name );

			if ( is_null( $title ) ) {
			throw new MWException( "invalid title '$name' at line $line\n" );
			}

			$page = WikiPage::factory( $title );
			$page->loadPageData( 'fromdbmaster' );

			if ( $page->exists() ) {
			if ( $ignoreDuplicate == 'ignoreduplicate' ) {
			return;
			} else {
			throw new MWException( "duplicate article '$name' at line $line\n" );
			}
			}

			$page->doEditContent( ContentHandler::makeContent( $text, $title ), '', EDIT_NEW );

			$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 string $name
			* @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 string $name
			* @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;
			}

			/**
			* 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 string $name
			* @return bool True if function hook is present
			*/
			public function requireTransparentHook( $name ) {
			global $wgParser;

			$wgParser->firstCallInit(); // make sure hooks are loaded.

			if ( isset( $wgParser->mTransparentTagHooks[$name] ) ) {
			$this->transparentHooks[$name] = $wgParser->mTransparentTagHooks[$name];
			} else {
			echo " This test suite requires the '$name' transparent hook extension, skipping.\n";
			return false;
			}

			return true;
			}

			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; // parsed as '1970-01-01T00:02:03Z'
			return true;
			}
			}

			class ParserTestResultNormalizer {
			protected $doc, $xpath, $invalid;

			public static function normalize( $text, $funcs ) {
			$norm = new self( $text );
			if ( $norm->invalid ) {
			return $text;
			}
			foreach ( $funcs as $func ) {
			$norm->$func();
			}
			return $norm->serialize();
			}

			protected function __construct( $text ) {
			$this->doc = new DOMDocument( '1.0', 'utf-8' );

			// Note: parsing a supposedly XHTML document with an XML parser is not
			// guaranteed to give accurate results. For example, it may introduce
			// differences in the number of line breaks in <pre> tags.

			MediaWiki\suppressWarnings();
			if ( !$this->doc->loadXML( '<html><body>' . $text . '</body></html>' ) ) {
			$this->invalid = true;
			}
			MediaWiki\restoreWarnings();
			$this->xpath = new DOMXPath( $this->doc );
			$this->body = $this->xpath->query( '//body' )->item( 0 );
			}

			protected function removeTbody() {
			foreach ( $this->xpath->query( '//tbody' ) as $tbody ) {
			while ( $tbody->firstChild ) {
			$child = $tbody->firstChild;
			$tbody->removeChild( $child );
			$tbody->parentNode->insertBefore( $child, $tbody );
			}
			$tbody->parentNode->removeChild( $tbody );
			}
			}

			/**
			* The point of this function is to produce a normalized DOM in which
			* Tidy's output matches the output of html5depurate. Tidy both trims
			* and pretty-prints, so this requires fairly aggressive treatment.
			*
			* In particular, note that Tidy converts <pre>x</pre> to <pre>\nx\n</pre>,
			* which theoretically affects display since the second line break is not
			* ignored by compliant HTML parsers.
			*
			* This function also removes empty elements, as does Tidy.
			*/
			protected function trimWhitespace() {
			foreach ( $this->xpath->query( '//text()' ) as $child ) {
			if ( strtolower( $child->parentNode->nodeName ) === 'pre' ) {
			// Just trim one line break from the start and end
			if ( substr_compare( $child->data, "\n", 0 ) === 0 ) {
			$child->data = substr( $child->data, 1 );
			}
			if ( substr_compare( $child->data, "\n", -1 ) === 0 ) {
			$child->data = substr( $child->data, 0, -1 );
			}
			} else {
			// Trim all whitespace
			$child->data = trim( $child->data );
			}
			if ( $child->data === '' ) {
			$child->parentNode->removeChild( $child );
			}
			}
			}

			/**
			* Serialize the XML DOM for comparison purposes. This does not generate HTML.
			*/
			protected function serialize() {
			return strtr( $this->doc->saveXML( $this->body ),
			[ '<body>' => '', '</body>' => '' ] );
			}
			}

mediawiki/tests/parser/parserTest.inc507a6aece270master

parserTest.incView Options

mediawiki/tests/parser/parserTest.inc
507a6aece270master

parserTest.inc
View Options