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