tests/parser/parserTest.inc

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