maintenance/parserTests.inc

   1 <?php
   2 # Copyright (C) 2004 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 Maintenance
  25  */
  26
  27 /** */
  28 $options = array( 'quick', 'color', 'quiet', 'help', 'show-output', 'record'. 'run-disabled' );
  29 $optionsWithArgs = array( 'regex', 'seed', 'setversion' );
  30
  31 require_once( 'commandLine.inc' );
  32 require_once( "$IP/maintenance/parserTestsParserHook.php" );
  33 require_once( "$IP/maintenance/parserTestsStaticParserHook.php" );
  34 require_once( "$IP/maintenance/parserTestsParserTime.php" );
  35
  36 /**
  37  * @ingroup Maintenance
  38  */
  39 class ParserTest {
  40         /**
  41          * boolean $color whereas output should be colorized
  42          */
  43         private $color;
  44
  45         /**
  46          * boolean $showOutput Show test output
  47          */
  48         private $showOutput;
  49
  50         /**
  51          * boolean $useTemporaryTables Use temporary tables for the temporary database
  52          */
  53         private $useTemporaryTables = true;
  54
  55         /**
  56          * boolean $databaseSetupDone True if the database has been set up
  57          */
  58         private $databaseSetupDone = false;
  59
  60         /**
  61          * string $oldTablePrefix Original table prefix
  62          */
  63         private $oldTablePrefix;
  64
  65         private $maxFuzzTestLength = 300;
  66         private $fuzzSeed = 0;
  67         private $memoryLimit = 50;
  68
  69         /**
  70          * Sets terminal colorization and diff/quick modes depending on OS and
  71          * command-line options (--color and --quick).
  72          */
  73         public function ParserTest() {
  74                 global $options;
  75
  76                 # Only colorize output if stdout is a terminal.
  77                 $this->color = !wfIsWindows() && posix_isatty(1);
  78
  79                 if( isset( $options['color'] ) ) {
  80                         switch( $options['color'] ) {
  81                         case 'no':
  82                                 $this->color = false;
  83                                 break;
  84                         case 'yes':
  85                         default:
  86                                 $this->color = true;
  87                                 break;
  88                         }
  89                 }
  90                 $this->term = $this->color
  91                         ? new AnsiTermColorer()
  92                         : new DummyTermColorer();
  93
  94                 $this->showDiffs = !isset( $options['quick'] );
  95                 $this->showProgress = !isset( $options['quiet'] );
  96                 $this->showFailure = !(
  97                         isset( $options['quiet'] )
  98                         && ( isset( $options['record'] )
  99                                 || isset( $options['compare'] ) ) ); // redundant output
 100
 101                 $this->showOutput = isset( $options['show-output'] );
 102
 103
 104                 if (isset($options['regex'])) {
 105                         if ( isset( $options['record'] ) ) {
 106                                 echo "Warning: --record cannot be used with --regex, disabling --record\n";
 107                                 unset( $options['record'] );
 108                         }
 109                         $this->regex = $options['regex'];
 110                 } else {
 111                         # Matches anything
 112                         $this->regex = '';
 113                 }
 114
 115                 if( isset( $options['record'] ) ) {
 116                         $this->recorder = new DbTestRecorder( $this );
 117                 } elseif( isset( $options['compare'] ) ) {
 118                         $this->recorder = new DbTestPreviewer( $this );
 119                 } else {
 120                         $this->recorder = new TestRecorder( $this );
 121                 }
 122                 $this->keepUploads = isset( $options['keep-uploads'] );
 123
 124                 if ( isset( $options['seed'] ) ) {
 125                         $this->fuzzSeed = intval( $options['seed'] ) - 1;
 126                 }
 127
 128                 $this->runDisabled = isset( $options['run-disabled'] );
 129
 130                 $this->hooks = array();
 131                 $this->functionHooks = array();
 132         }
 133
 134         /**
 135          * Remove last character if it is a newline
 136          */
 137         private function chomp($s) {
 138                 if (substr($s, -1) === "\n") {
 139                         return substr($s, 0, -1);
 140                 }
 141                 else {
 142                         return $s;
 143                 }
 144         }
 145
 146         /**
 147          * Run a fuzz test series
 148          * Draw input from a set of test files
 149          */
 150         function fuzzTest( $filenames ) {
 151                 $dict = $this->getFuzzInput( $filenames );
 152                 $dictSize = strlen( $dict );
 153                 $logMaxLength = log( $this->maxFuzzTestLength );
 154                 $this->setupDatabase();
 155                 ini_set( 'memory_limit', $this->memoryLimit * 1048576 );
 156
 157                 $numTotal = 0;
 158                 $numSuccess = 0;
 159                 $user = new User;
 160                 $opts = ParserOptions::newFromUser( $user );
 161                 $title = Title::makeTitle( NS_MAIN, 'Parser_test' );
 162
 163                 while ( true ) {
 164                         // Generate test input
 165                         mt_srand( ++$this->fuzzSeed );
 166                         $totalLength = mt_rand( 1, $this->maxFuzzTestLength );
 167                         $input = '';
 168                         while ( strlen( $input ) < $totalLength ) {
 169                                 $logHairLength = mt_rand( 0, 1000000 ) / 1000000 * $logMaxLength;
 170                                 $hairLength = min( intval( exp( $logHairLength ) ), $dictSize );
 171                                 $offset = mt_rand( 0, $dictSize - $hairLength );
 172                                 $input .= substr( $dict, $offset, $hairLength );
 173                         }
 174
 175                         $this->setupGlobals();
 176                         $parser = $this->getParser();
 177                         // Run the test
 178                         try {
 179                                 $parser->parse( $input, $title, $opts );
 180                                 $fail = false;
 181                         } catch ( Exception $exception ) {
 182                                 $fail = true;
 183                         }
 184
 185                         if ( $fail ) {
 186                                 echo "Test failed with seed {$this->fuzzSeed}\n";
 187                                 echo "Input:\n";
 188                                 var_dump( $input );
 189                                 echo "\n\n";
 190                                 echo "$exception\n";
 191                         } else {
 192                                 $numSuccess++;
 193                         }
 194                         $numTotal++;
 195                         $this->teardownGlobals();
 196                         $parser->__destruct();
 197
 198                         if ( $numTotal % 100 == 0 ) {
 199                                 $usage = intval( memory_get_usage( true ) / $this->memoryLimit / 1048576 * 100 );
 200                                 echo "{$this->fuzzSeed}: $numSuccess/$numTotal (mem: $usage%)\n";
 201                                 if ( $usage > 90 ) {
 202                                         echo "Out of memory:\n";
 203                                         $memStats = $this->getMemoryBreakdown();
 204                                         foreach ( $memStats as $name => $usage ) {
 205                                                 echo "$name: $usage\n";
 206                                         }
 207                                         $this->abort();
 208                                 }
 209                         }
 210                 }
 211         }
 212
 213         /**
 214          * Get an input dictionary from a set of parser test files
 215          */
 216         function getFuzzInput( $filenames ) {
 217                 $dict = '';
 218                 foreach( $filenames as $filename ) {
 219                         $contents = file_get_contents( $filename );
 220                         preg_match_all( '/!!\s*input\n(.*?)\n!!\s*result/s', $contents, $matches );
 221                         foreach ( $matches[1] as $match ) {
 222                                 $dict .= $match . "\n";
 223                         }
 224                 }
 225                 return $dict;
 226         }
 227
 228         /**
 229          * Get a memory usage breakdown
 230          */
 231         function getMemoryBreakdown() {
 232                 $memStats = array();
 233                 foreach ( $GLOBALS as $name => $value ) {
 234                         $memStats['$'.$name] = strlen( serialize( $value ) );
 235                 }
 236                 $classes = get_declared_classes();
 237                 foreach ( $classes as $class ) {
 238                         $rc = new ReflectionClass( $class );
 239                         $props = $rc->getStaticProperties();
 240                         $memStats[$class] = strlen( serialize( $props ) );
 241                         $methods = $rc->getMethods();
 242                         foreach ( $methods as $method ) {
 243                                 $memStats[$class] += strlen( serialize( $method->getStaticVariables() ) );
 244                         }
 245                 }
 246                 $functions = get_defined_functions();
 247                 foreach ( $functions['user'] as $function ) {
 248                         $rf = new ReflectionFunction( $function );
 249                         $memStats["$function()"] = strlen( serialize( $rf->getStaticVariables() ) );
 250                 }
 251                 asort( $memStats );
 252                 return $memStats;
 253         }
 254
 255         function abort() {
 256                 $this->abort();
 257         }
 258
 259         /**
 260          * Run a series of tests listed in the given text files.
 261          * Each test consists of a brief description, wikitext input,
 262          * and the expected HTML output.
 263          *
 264          * Prints status updates on stdout and counts up the total
 265          * number and percentage of passed tests.
 266          *
 267          * @param array of strings $filenames
 268          * @return bool True if passed all tests, false if any tests failed.
 269          */
 270         public function runTestsFromFiles( $filenames ) {
 271                 $this->recorder->start();
 272                 $this->setupDatabase();
 273                 $ok = true;
 274                 foreach( $filenames as $filename ) {
 275                         $ok = $this->runFile( $filename ) && $ok;
 276                 }
 277                 $this->teardownDatabase();
 278                 $this->recorder->report();
 279                 $this->recorder->end();
 280                 return $ok;
 281         }
 282
 283         private function runFile( $filename ) {
 284                 $infile = fopen( $filename, 'rt' );
 285                 if( !$infile ) {
 286                         wfDie( "Couldn't open file '$filename'\n" );
 287                 } else {
 288                         global $IP;
 289                         $relative = wfRelativePath( $filename, $IP );
 290                         $this->showRunFile( $relative );
 291                 }
 292
 293                 $data = array();
 294                 $section = null;
 295                 $n = 0;
 296                 $ok = true;
 297                 while( false !== ($line = fgets( $infile ) ) ) {
 298                         $n++;
 299                         $matches = array();
 300                         if( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
 301                                 $section = strtolower( $matches[1] );
 302                                 if( $section == 'endarticle') {
 303                                         if( !isset( $data['text'] ) ) {
 304                                                 wfDie( "'endarticle' without 'text' at line $n of $filename\n" );
 305                                         }
 306                                         if( !isset( $data['article'] ) ) {
 307                                                 wfDie( "'endarticle' without 'article' at line $n of $filename\n" );
 308                                         }
 309                                         $this->addArticle($this->chomp($data['article']), $this->chomp($data['text']), $n);
 310                                         $data = array();
 311                                         $section = null;
 312                                         continue;
 313                                 }
 314                                 if( $section == 'endhooks' ) {
 315                                         if( !isset( $data['hooks'] ) ) {
 316                                                 wfDie( "'endhooks' without 'hooks' at line $n of $filename\n" );
 317                                         }
 318                                         foreach( explode( "\n", $data['hooks'] ) as $line ) {
 319                                                 $line = trim( $line );
 320                                                 if( $line ) {
 321                                                         $this->requireHook( $line );
 322                                                 }
 323                                         }
 324                                         $data = array();
 325                                         $section = null;
 326                                         continue;
 327                                 }
 328                                 if( $section == 'endfunctionhooks' ) {
 329                                         if( !isset( $data['functionhooks'] ) ) {
 330                                                 wfDie( "'endfunctionhooks' without 'functionhooks' at line $n of $filename\n" );
 331                                         }
 332                                         foreach( explode( "\n", $data['functionhooks'] ) as $line ) {
 333                                                 $line = trim( $line );
 334                                                 if( $line ) {
 335                                                         $this->requireFunctionHook( $line );
 336                                                 }
 337                                         }
 338                                         $data = array();
 339                                         $section = null;
 340                                         continue;
 341                                 }
 342                                 if( $section == 'end' ) {
 343                                         if( !isset( $data['test'] ) ) {
 344                                                 wfDie( "'end' without 'test' at line $n of $filename\n" );
 345                                         }
 346                                         if( !isset( $data['input'] ) ) {
 347                                                 wfDie( "'end' without 'input' at line $n of $filename\n" );
 348                                         }
 349                                         if( !isset( $data['result'] ) ) {
 350                                                 wfDie( "'end' without 'result' at line $n of $filename\n" );
 351                                         }
 352                                         if( !isset( $data['options'] ) ) {
 353                                                 $data['options'] = '';
 354                                         }
 355                                         else {
 356                                                 $data['options'] = $this->chomp( $data['options'] );
 357                                         }
 358                                         if (!isset( $data['config'] ) )
 359                                                 $data['config'] = '';
 360
 361                                         if ( (preg_match('/\\bdisabled\\b/i', $data['options'])
 362                                                 || !preg_match("/{$this->regex}/i", $data['test'])) && !$this->runDisabled ) {
 363                                                 # disabled test
 364                                                 $data = array();
 365                                                 $section = null;
 366                                                 continue;
 367                                         }
 368                                         $result = $this->runTest(
 369                                                 $this->chomp( $data['test'] ),
 370                                                 $this->chomp( $data['input'] ),
 371                                                 $this->chomp( $data['result'] ),
 372                                                 $this->chomp( $data['options'] ),
 373                                                 $this->chomp( $data['config']   )
 374                                                 );
 375                                         $ok = $ok && $result;
 376                                         $this->recorder->record( $this->chomp( $data['test'] ), $result );
 377                                         $data = array();
 378                                         $section = null;
 379                                         continue;
 380                                 }
 381                                 if ( isset ($data[$section] ) ) {
 382                                         wfDie( "duplicate section '$section' at line $n of $filename\n" );
 383                                 }
 384                                 $data[$section] = '';
 385                                 continue;
 386                         }
 387                         if( $section ) {
 388                                 $data[$section] .= $line;
 389                         }
 390                 }
 391                 if ( $this->showProgress ) {
 392                         print "\n";
 393                 }
 394                 return $ok;
 395         }
 396
 397         /**
 398          * Get a Parser object
 399          */
 400         function getParser() {
 401                 global $wgParserConf;
 402                 $class = $wgParserConf['class'];
 403                 $parser = new $class( $wgParserConf );
 404                 foreach( $this->hooks as $tag => $callback ) {
 405                         $parser->setHook( $tag, $callback );
 406                 }
 407                 foreach( $this->functionHooks as $tag => $bits ) {
 408                         list( $callback, $flags ) = $bits;
 409                         $parser->setFunctionHook( $tag, $callback, $flags );
 410                 }
 411                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 412                 return $parser;
 413         }
 414
 415         /**
 416          * Run a given wikitext input through a freshly-constructed wiki parser,
 417          * and compare the output against the expected results.
 418          * Prints status and explanatory messages to stdout.
 419          *
 420          * @param string $input Wikitext to try rendering
 421          * @param string $result Result to output
 422          * @return bool
 423          */
 424         private function runTest( $desc, $input, $result, $opts, $config ) {
 425                 if( $this->showProgress ) {
 426                         $this->showTesting( $desc );
 427                 }
 428
 429                 $opts = $this->parseOptions( $opts );
 430                 $this->setupGlobals($opts, $config);
 431
 432                 $user = new User();
 433                 $options = ParserOptions::newFromUser( $user );
 434
 435                 if ( isset( $opts['math'] ) ) {
 436                         # XXX this should probably be done by the ParserOptions
 437                         $options->setUseTex(true);
 438                 }
 439
 440                 $m = array();
 441                 if (isset( $opts['title'] ) ) {
 442                         $titleText = $opts['title'];
 443                 }
 444                 else {
 445                         $titleText = 'Parser test';
 446                 }
 447
 448                 $noxml = isset( $opts['noxml'] );
 449                 $local = isset( $opts['local'] );
 450                 $parser = $this->getParser();
 451                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 452
 453                 $matches = array();
 454                 if( isset( $opts['pst'] ) ) {
 455                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 456                 } elseif( isset( $opts['msg'] ) ) {
 457                         $out = $parser->transformMsg( $input, $options );
 458                 } elseif( isset( $opts['section'] ) ) {
 459                         $section = $opts['section'];
 460                         $out = $parser->getSection( $input, $section );
 461                 } elseif( isset( $opts['replace'] ) ) {
 462                         $section = $opts['replace'][0];
 463                         $replace = $opts['replace'][1];
 464                         $out = $parser->replaceSection( $input, $section, $replace );
 465                 } elseif( isset( $opts['comment'] ) ) {
 466                         $linker = $user->getSkin();
 467                         $out = $linker->formatComment( $input, $title, $local );
 468                 } else {
 469                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 470                         $out = $output->getText();
 471
 472                         if (isset( $opts['ill'] ) ) {
 473                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 474                         } elseif( isset( $opts['cat'] ) ) {
 475                                 global $wgOut;
 476                                 $wgOut->addCategoryLinks($output->getCategories());
 477                                 $cats = $wgOut->getCategoryLinks();
 478                                 if ( isset( $cats['normal'] ) ) {
 479                                         $out = $this->tidy( implode( ' ', $cats['normal'] ) );
 480                                 } else {
 481                                         $out = '';
 482                                 }
 483                         }
 484
 485                         $result = $this->tidy($result);
 486                 }
 487
 488                 $this->teardownGlobals();
 489
 490                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 491                         return $this->showSuccess( $desc );
 492                 } else {
 493                         return $this->showFailure( $desc, $result, $out );
 494                 }
 495         }
 496
 497
 498         /**
 499          * Use a regex to find out the value of an option
 500          * @param $key name of option val to retrieve
 501          * @param $opts Options array to look in
 502          * @param $defaults Default value returned if not found
 503          */
 504         private static function getOptionValue( $key, $opts, $default ) {
 505                 $key = strtolower( $key );
 506                 if( isset( $opts[$key] ) ) {
 507                         return $opts[$key];
 508                 } else {
 509                         return $default;
 510                 }
 511         }
 512
 513         private function parseOptions( $instring ) {
 514                 $opts = array();
 515                 $lines = explode( "\n", $instring );
 516                 // foo
 517                 // foo=bar
 518                 // foo="bar baz"
 519                 // foo=[[bar baz]]
 520                 // foo=bar,"baz quux"
 521                 $regex = '/\b
 522                         ([\w-]+)                                                # Key
 523                         \b
 524                         (?:\s*
 525                                 =                                               # First sub-value
 526                                 \s*
 527                                 (
 528                                         "
 529                                                 [^"]*                   # Quoted val
 530                                         "
 531                                 |
 532                                         \[\[
 533                                                 [^]]*                   # Link target
 534                                         \]\]
 535                                 |
 536                                         [\w-]+                          # Plain word
 537                                 )
 538                                 (?:\s*
 539                                         ,                                       # Sub-vals 1..N
 540                                         \s*
 541                                         (
 542                                                 "[^"]*"                 # Quoted val
 543                                         |
 544                                                 \[\[[^]]*\]\]   # Link target
 545                                         |
 546                                                 [\w-]+                  # Plain word
 547                                         )
 548                                 )*
 549                         )?
 550                         /x';
 551
 552                 if( preg_match_all( $regex, $instring, $matches, PREG_SET_ORDER ) ) {
 553                         foreach( $matches as $bits ) {
 554                                 $match = array_shift( $bits );
 555                                 $key = strtolower( array_shift( $bits ) );
 556                                 if( count( $bits ) == 0 ) {
 557                                         $opts[$key] = true;
 558                                 } elseif( count( $bits ) == 1 ) {
 559                                         $opts[$key] = $this->cleanupOption( array_shift( $bits ) );
 560                                 } else {
 561                                         // Array!
 562                                         $opts[$key] = array_map( array( $this, 'cleanupOption' ), $bits );
 563                                 }
 564                         }
 565                 }
 566                 return $opts;
 567         }
 568
 569         private function cleanupOption( $opt ) {
 570                 if( substr( $opt, 0, 1 ) == '"' ) {
 571                         return substr( $opt, 1, -1 );
 572                 }
 573                 if( substr( $opt, 0, 2 ) == '[[' ) {
 574                         return substr( $opt, 2, -2 );
 575                 }
 576                 return $opt;
 577         }
 578
 579         /**
 580          * Set up the global variables for a consistent environment for each test.
 581          * Ideally this should replace the global configuration entirely.
 582          */
 583         private function setupGlobals($opts = '', $config = '') {
 584                 if( !isset( $this->uploadDir ) ) {
 585                         $this->uploadDir = $this->setupUploadDir();
 586                 }
 587
 588                 # Find out values for some special options.
 589                 $lang =
 590                         self::getOptionValue( 'language', $opts, 'en' );
 591                 $variant =
 592                         self::getOptionValue( 'variant', $opts, false );
 593                 $maxtoclevel =
 594                         self::getOptionValue( 'wgMaxTocLevel', $opts, 999 );
 595                 $linkHolderBatchSize =
 596                         self::getOptionValue( 'wgLinkHolderBatchSize', $opts, 1000 );
 597
 598                 $settings = array(
 599                         'wgServer' => 'http://localhost',
 600                         'wgScript' => '/index.php',
 601                         'wgScriptPath' => '/',
 602                         'wgArticlePath' => '/wiki/$1',
 603                         'wgActionPaths' => array(),
 604                         'wgLocalFileRepo' => array(
 605                                 'class' => 'LocalRepo',
 606                                 'name' => 'local',
 607                                 'directory' => $this->uploadDir,
 608                                 'url' => 'http://example.com/images',
 609                                 'hashLevels' => 2,
 610                                 'transformVia404' => false,
 611                         ),
 612                         'wgEnableUploads' => true,
 613                         'wgStyleSheetPath' => '/skins',
 614                         'wgSitename' => 'MediaWiki',
 615                         'wgServerName' => 'Britney Spears',
 616                         'wgLanguageCode' => $lang,
 617                         'wgContLanguageCode' => $lang,
 618                         'wgDBprefix' => 'parsertest_',
 619                         'wgRawHtml' => isset( $opts['rawhtml'] ),
 620                         'wgLang' => null,
 621                         'wgContLang' => null,
 622                         'wgNamespacesWithSubpages' => array( 0 => isset( $opts['subpage'] ) ),
 623                         'wgMaxTocLevel' => $maxtoclevel,
 624                         'wgCapitalLinks' => true,
 625                         'wgNoFollowLinks' => true,
 626                         'wgNoFollowDomainExceptions' => array(),
 627                         'wgThumbnailScriptPath' => false,
 628                         'wgUseTeX' => false,
 629                         'wgLocaltimezone' => 'UTC',
 630                         'wgAllowExternalImages' => true,
 631                         'wgUseTidy' => false,
 632                         'wgDefaultLanguageVariant' => $variant,
 633                         'wgVariantArticlePath' => false,
 634                         'wgGroupPermissions' => array( '*' => array(
 635                                 'createaccount' => true,
 636                                 'read'          => true,
 637                                 'edit'          => true,
 638                                 'createpage'    => true,
 639                                 'createtalk'    => true,
 640                         ) ),
 641                         'wgNamespaceProtection' => array( NS_MEDIAWIKI => 'editinterface' ),
 642                         'wgDefaultExternalStore' => array(),
 643                         'wgForeignFileRepos' => array(),
 644                         'wgLinkHolderBatchSize' => $linkHolderBatchSize,
 645                         'wgEnforceHtmlIds' => true,
 646                         'wgExternalLinkTarget' => false,
 647                         'wgAlwaysUseTidy' => false,
 648                         );
 649
 650                 if ($config) {
 651                         $configLines = explode( "\n", $config );
 652
 653                         foreach( $configLines as $line ) {
 654                                 list( $var, $value ) = explode( '=', $line, 2 );
 655
 656                                 $settings[$var] = eval("return $value;" );
 657                         }
 658                 }
 659
 660                 $this->savedGlobals = array();
 661                 foreach( $settings as $var => $val ) {
 662                         $this->savedGlobals[$var] = $GLOBALS[$var];
 663                         $GLOBALS[$var] = $val;
 664                 }
 665                 $langObj = Language::factory( $lang );
 666                 $GLOBALS['wgLang'] = $langObj;
 667                 $GLOBALS['wgContLang'] = $langObj;
 668                 $GLOBALS['wgMemc'] = new FakeMemCachedClient;
 669
 670                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 671
 672                 global $wgUser;
 673                 $wgUser = new User();
 674         }
 675
 676         /**
 677          * List of temporary tables to create, without prefix.
 678          * Some of these probably aren't necessary.
 679          */
 680         private function listTables() {
 681                 global $wgDBtype;
 682                 $tables = array('user', 'page', 'page_restrictions',
 683                         'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
 684                         'categorylinks', 'templatelinks', 'externallinks', 'langlinks',
 685                         'site_stats', 'hitcounter',     'ipblocks', 'image', 'oldimage',
 686                         'recentchanges', 'watchlist', 'math', 'interwiki',
 687                         'querycache', 'objectcache', 'job', 'l10n_cache', 'redirect', 'querycachetwo',
 688                         'archive', 'user_groups', 'page_props', 'category'
 689                 );
 690
 691                 if ($wgDBtype === 'mysql')
 692                         array_push( $tables, 'searchindex' );
 693
 694                 // Allow extensions to add to the list of tables to duplicate;
 695                 // may be necessary if they hook into page save or other code
 696                 // which will require them while running tests.
 697                 wfRunHooks( 'ParserTestTables', array( &$tables ) );
 698
 699                 return $tables;
 700         }
 701
 702         /**
 703          * Set up a temporary set of wiki tables to work with for the tests.
 704          * Currently this will only be done once per run, and any changes to
 705          * the db will be visible to later tests in the run.
 706          */
 707         private function setupDatabase() {
 708                 global $wgDBprefix, $wgDBtype;
 709                 if ( $this->databaseSetupDone ) {
 710                         return;
 711                 }
 712                 if ( $wgDBprefix === 'parsertest_' ) {
 713                         throw new MWException( 'setupDatabase should be called before setupGlobals' );
 714                 }
 715                 $this->databaseSetupDone = true;
 716                 $this->oldTablePrefix = $wgDBprefix;
 717
 718                 # CREATE TEMPORARY TABLE breaks if there is more than one server
 719                 # FIXME: r40209 makes temporary tables break even with just one server
 720                 # FIXME: (bug 15892); disabling the feature entirely as a temporary fix
 721                 if ( true || wfGetLB()->getServerCount() != 1 ) {
 722                         $this->useTemporaryTables = false;
 723                 }
 724
 725                 $temporary = $this->useTemporaryTables ? 'TEMPORARY' : '';
 726
 727                 $db = wfGetDB( DB_MASTER );
 728                 $tables = $this->listTables();
 729
 730                 if ( !( $wgDBtype == 'mysql' && strcmp( $db->getServerVersion(), '4.1' ) < 0 ) ) {
 731                         # Database that supports CREATE TABLE ... LIKE
 732
 733                         if( $wgDBtype == 'postgres' ) {
 734                                 $def = 'INCLUDING DEFAULTS';
 735                                 $temporary = 'TEMPORARY';
 736                         } else {
 737                                 $def = '';
 738                         }
 739                         foreach ( $tables as $tbl ) {
 740                                 # Clean up from previous aborted run.  So that table escaping
 741                                 # works correctly across DB engines, we need to change the pre-
 742                                 # fix back and forth so tableName() works right.
 743                                 $this->changePrefix( $this->oldTablePrefix );
 744                                 $oldTableName = $db->tableName( $tbl );
 745                                 $this->changePrefix( 'parsertest_' );
 746                                 $newTableName = $db->tableName( $tbl );
 747
 748                                 if ( $db->tableExists( $tbl ) && $wgDBtype != 'postgres' ) {
 749                                         $db->query( "DROP TABLE $newTableName" );
 750                                 }
 751                                 # Create new table
 752                                 $db->query( "CREATE $temporary TABLE $newTableName (LIKE $oldTableName $def)" );
 753                         }
 754                 } else {
 755                         # Hack for MySQL versions < 4.1, which don't support
 756                         # "CREATE TABLE ... LIKE". Note that
 757                         # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 758                         # would not create the indexes we need....
 759                         #
 760                         # Note that we don't bother changing around the prefixes here be-
 761                         # cause we know we're using MySQL anyway.
 762                         foreach ($tables as $tbl) {
 763                                 $oldTableName = $db->tableName( $tbl );
 764                                 $res = $db->query("SHOW CREATE TABLE $oldTableName");
 765                                 $row = $db->fetchRow($res);
 766                                 $create = $row[1];
 767                                 $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/',
 768                                         "CREATE $temporary TABLE `parsertest_$tbl`", $create);
 769                                 if ($create === $create_tmp) {
 770                                         # Couldn't do replacement
 771                                         wfDie("could not create temporary table $tbl");
 772                                 }
 773                                 $db->query($create_tmp);
 774                         }
 775                 }
 776
 777                 $this->changePrefix( 'parsertest_' );
 778
 779                 # Hack: insert a few Wikipedia in-project interwiki prefixes,
 780                 # for testing inter-language links
 781                 $db->insert( 'interwiki', array(
 782                         array( 'iw_prefix' => 'wikipedia',
 783                                    'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 784                                    'iw_local'  => 0 ),
 785                         array( 'iw_prefix' => 'meatball',
 786                                    'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 787                                    'iw_local'  => 0 ),
 788                         array( 'iw_prefix' => 'zh',
 789                                    'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 790                                    'iw_local'  => 1 ),
 791                         array( 'iw_prefix' => 'es',
 792                                    'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 793                                    'iw_local'  => 1 ),
 794                         array( 'iw_prefix' => 'fr',
 795                                    'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 796                                    'iw_local'  => 1 ),
 797                         array( 'iw_prefix' => 'ru',
 798                                    'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 799                                    'iw_local'  => 1 ),
 800                         ) );
 801
 802                 # Hack: Insert an image to work with
 803                 $db->insert( 'image', array(
 804                         'img_name'        => 'Foobar.jpg',
 805                         'img_size'        => 12345,
 806                         'img_description' => 'Some lame file',
 807                         'img_user'        => 1,
 808                         'img_user_text'   => 'WikiSysop',
 809                         'img_timestamp'   => $db->timestamp( '20010115123500' ),
 810                         'img_width'       => 1941,
 811                         'img_height'      => 220,
 812                         'img_bits'        => 24,
 813                         'img_media_type'  => MEDIATYPE_BITMAP,
 814                         'img_major_mime'  => "image",
 815                         'img_minor_mime'  => "jpeg",
 816                         'img_metadata'    => serialize( array() ),
 817                         ) );
 818
 819                 # Update certain things in site_stats
 820                 $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 821
 822                 # Reinitialise the LocalisationCache to match the database state
 823                 Language::getLocalisationCache()->unloadAll();
 824         }
 825
 826         /**
 827          * Change the table prefix on all open DB connections/
 828          */
 829         protected function changePrefix( $prefix ) {
 830                 global $wgDBprefix;
 831                 wfGetLBFactory()->forEachLB( array( $this, 'changeLBPrefix' ), array( $prefix ) );
 832                 $wgDBprefix = $prefix;
 833         }
 834
 835         public function changeLBPrefix( $lb, $prefix ) {
 836                 $lb->forEachOpenConnection( array( $this, 'changeDBPrefix' ), array( $prefix ) );
 837         }
 838
 839         public function changeDBPrefix( $db, $prefix ) {
 840                 $db->tablePrefix( $prefix );
 841         }
 842
 843         private function teardownDatabase() {
 844                 global $wgDBprefix;
 845                 if ( !$this->databaseSetupDone ) {
 846                         return;
 847                 }
 848                 $this->changePrefix( $this->oldTablePrefix );
 849                 $this->databaseSetupDone = false;
 850                 if ( $this->useTemporaryTables ) {
 851                         # Don't need to do anything
 852                         return;
 853                 }
 854
 855                 /*
 856                 $tables = $this->listTables();
 857                 $db = wfGetDB( DB_MASTER );
 858                 foreach ( $tables as $table ) {
 859                         $db->query( "DROP TABLE `parsertest_$table`" );
 860                 }*/
 861         }
 862
 863         /**
 864          * Create a dummy uploads directory which will contain a couple
 865          * of files in order to pass existence tests.
 866          * @return string The directory
 867          */
 868         private function setupUploadDir() {
 869                 global $IP;
 870                 if ( $this->keepUploads ) {
 871                         $dir = wfTempDir() . '/mwParser-images';
 872                         if ( is_dir( $dir ) ) {
 873                                 return $dir;
 874                         }
 875                 } else {
 876                         $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 877                 }
 878
 879                 wfDebug( "Creating upload directory $dir\n" );
 880                 if ( file_exists( $dir ) ) {
 881                         wfDebug( "Already exists!\n" );
 882                         return $dir;
 883                 }
 884                 wfMkdirParents( $dir . '/3/3a' );
 885                 copy( "$IP/skins/monobook/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
 886                 return $dir;
 887         }
 888
 889         /**
 890          * Restore default values and perform any necessary clean-up
 891          * after each test runs.
 892          */
 893         private function teardownGlobals() {
 894                 RepoGroup::destroySingleton();
 895                 FileCache::destroySingleton();
 896                 LinkCache::singleton()->clear();
 897                 foreach( $this->savedGlobals as $var => $val ) {
 898                         $GLOBALS[$var] = $val;
 899                 }
 900                 if( isset( $this->uploadDir ) ) {
 901                         $this->teardownUploadDir( $this->uploadDir );
 902                         unset( $this->uploadDir );
 903                 }
 904         }
 905
 906         /**
 907          * Remove the dummy uploads directory
 908          */
 909         private function teardownUploadDir( $dir ) {
 910                 if ( $this->keepUploads ) {
 911                         return;
 912                 }
 913
 914                 // delete the files first, then the dirs.
 915                 self::deleteFiles(
 916                         array (
 917                                 "$dir/3/3a/Foobar.jpg",
 918                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
 919                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
 920                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
 921                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
 922                         )
 923                 );
 924
 925                 self::deleteDirs(
 926                         array (
 927                                 "$dir/3/3a",
 928                                 "$dir/3",
 929                                 "$dir/thumb/6/65",
 930                                 "$dir/thumb/6",
 931                                 "$dir/thumb/3/3a/Foobar.jpg",
 932                                 "$dir/thumb/3/3a",
 933                                 "$dir/thumb/3",
 934                                 "$dir/thumb",
 935                                 "$dir",
 936                         )
 937                 );
 938         }
 939
 940         /**
 941          * Delete the specified files, if they exist.
 942          * @param array $files full paths to files to delete.
 943          */
 944         private static function deleteFiles( $files ) {
 945                 foreach( $files as $file ) {
 946                         if( file_exists( $file ) ) {
 947                                 unlink( $file );
 948                         }
 949                 }
 950         }
 951
 952         /**
 953          * Delete the specified directories, if they exist. Must be empty.
 954          * @param array $dirs full paths to directories to delete.
 955          */
 956         private static function deleteDirs( $dirs ) {
 957                 foreach( $dirs as $dir ) {
 958                         if( is_dir( $dir ) ) {
 959                                 rmdir( $dir );
 960                         }
 961                 }
 962         }
 963
 964         /**
 965          * "Running test $desc..."
 966          */
 967         protected function showTesting( $desc ) {
 968                 print "Running test $desc... ";
 969         }
 970
 971         /**
 972          * Print a happy success message.
 973          *
 974          * @param string $desc The test name
 975          * @return bool
 976          */
 977         protected function showSuccess( $desc ) {
 978                 if( $this->showProgress ) {
 979                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
 980                 }
 981                 return true;
 982         }
 983
 984         /**
 985          * Print a failure message and provide some explanatory output
 986          * about what went wrong if so configured.
 987          *
 988          * @param string $desc The test name
 989          * @param string $result Expected HTML output
 990          * @param string $html Actual HTML output
 991          * @return bool
 992          */
 993         protected function showFailure( $desc, $result, $html ) {
 994                 if( $this->showFailure ) {
 995                         if( !$this->showProgress ) {
 996                                 # In quiet mode we didn't show the 'Testing' message before the
 997                                 # test, in case it succeeded. Show it now:
 998                                 $this->showTesting( $desc );
 999                         }
1000                         print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
1001                         if ( $this->showOutput ) {
1002                                 print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
1003                         }
1004                         if( $this->showDiffs ) {
1005                                 print $this->quickDiff( $result, $html );
1006                                 if( !$this->wellFormed( $html ) ) {
1007                                         print "XML error: $this->mXmlError\n";
1008                                 }
1009                         }
1010                 }
1011                 return false;
1012         }
1013
1014         /**
1015          * Run given strings through a diff and return the (colorized) output.
1016          * Requires writable /tmp directory and a 'diff' command in the PATH.
1017          *
1018          * @param string $input
1019          * @param string $output
1020          * @param string $inFileTail Tailing for the input file name
1021          * @param string $outFileTail Tailing for the output file name
1022          * @return string
1023          */
1024         protected function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
1025                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
1026
1027                 $infile = "$prefix-$inFileTail";
1028                 $this->dumpToFile( $input, $infile );
1029
1030                 $outfile = "$prefix-$outFileTail";
1031                 $this->dumpToFile( $output, $outfile );
1032
1033                 $diff = `diff -au $infile $outfile`;
1034                 unlink( $infile );
1035                 unlink( $outfile );
1036
1037                 return $this->colorDiff( $diff );
1038         }
1039
1040         /**
1041          * Write the given string to a file, adding a final newline.
1042          *
1043          * @param string $data
1044          * @param string $filename
1045          */
1046         private function dumpToFile( $data, $filename ) {
1047                 $file = fopen( $filename, "wt" );
1048                 fwrite( $file, $data . "\n" );
1049                 fclose( $file );
1050         }
1051
1052         /**
1053          * Colorize unified diff output if set for ANSI color output.
1054          * Subtractions are colored blue, additions red.
1055          *
1056          * @param string $text
1057          * @return string
1058          */
1059         protected function colorDiff( $text ) {
1060                 return preg_replace(
1061                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
1062                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
1063                                $this->term->color( 31 ) . '$1' . $this->term->reset() ),
1064                         $text );
1065         }
1066
1067         /**
1068          * Show "Reading tests from ..."
1069          *
1070          * @param String $path
1071          */
1072         protected function showRunFile( $path ){
1073                 print $this->term->color( 1 ) .
1074                         "Reading tests from \"$path\"..." .
1075                         $this->term->reset() .
1076                         "\n";
1077         }
1078
1079         /**
1080          * Insert a temporary test article
1081          * @param string $name the title, including any prefix
1082          * @param string $text the article text
1083          * @param int $line the input line number, for reporting errors
1084          */
1085         private function addArticle($name, $text, $line) {
1086                 $this->setupGlobals();
1087                 $title = Title::newFromText( $name );
1088                 if ( is_null($title) ) {
1089                         wfDie( "invalid title at line $line\n" );
1090                 }
1091
1092                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
1093                 if ($aid != 0) {
1094                         wfDie( "duplicate article at line $line\n" );
1095                 }
1096
1097                 $art = new Article($title);
1098                 $art->insertNewArticle($text, '', false, false );
1099                 $this->teardownGlobals();
1100         }
1101
1102         /**
1103          * Steal a callback function from the primary parser, save it for
1104          * application to our scary parser. If the hook is not installed,
1105          * die a painful dead to warn the others.
1106          * @param string $name
1107          */
1108         private function requireHook( $name ) {
1109                 global $wgParser;
1110                 $wgParser->firstCallInit( ); //make sure hooks are loaded.
1111                 if( isset( $wgParser->mTagHooks[$name] ) ) {
1112                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
1113                 } else {
1114                         wfDie( "This test suite requires the '$name' hook extension.\n" );
1115                 }
1116         }
1117
1118         /**
1119          * Steal a callback function from the primary parser, save it for
1120          * application to our scary parser. If the hook is not installed,
1121          * die a painful dead to warn the others.
1122          * @param string $name
1123          */
1124         private function requireFunctionHook( $name ) {
1125                 global $wgParser;
1126                 $wgParser->firstCallInit( ); //make sure hooks are loaded.
1127                 if( isset( $wgParser->mFunctionHooks[$name] ) ) {
1128                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
1129                 } else {
1130                         wfDie( "This test suite requires the '$name' function hook extension.\n" );
1131                 }
1132         }
1133
1134         /*
1135          * Run the "tidy" command on text if the $wgUseTidy
1136          * global is true
1137          *
1138          * @param string $text the text to tidy
1139          * @return string
1140          * @static
1141          */
1142         private function tidy( $text ) {
1143                 global $wgUseTidy;
1144                 if ($wgUseTidy) {
1145                         $text = Parser::tidy($text);
1146                 }
1147                 return $text;
1148         }
1149
1150         private function wellFormed( $text ) {
1151                 $html =
1152                         Sanitizer::hackDocType() .
1153                         '<html>' .
1154                         $text .
1155                         '</html>';
1156
1157                 $parser = xml_parser_create( "UTF-8" );
1158
1159                 # case folding violates XML standard, turn it off
1160                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
1161
1162                 if( !xml_parse( $parser, $html, true ) ) {
1163                         $err = xml_error_string( xml_get_error_code( $parser ) );
1164                         $position = xml_get_current_byte_index( $parser );
1165                         $fragment = $this->extractFragment( $html, $position );
1166                         $this->mXmlError = "$err at byte $position:\n$fragment";
1167                         xml_parser_free( $parser );
1168                         return false;
1169                 }
1170                 xml_parser_free( $parser );
1171                 return true;
1172         }
1173
1174         private function extractFragment( $text, $position ) {
1175                 $start = max( 0, $position - 10 );
1176                 $before = $position - $start;
1177                 $fragment = '...' .
1178                         $this->term->color( 34 ) .
1179                         substr( $text, $start, $before ) .
1180                         $this->term->color( 0 ) .
1181                         $this->term->color( 31 ) .
1182                         $this->term->color( 1 ) .
1183                         substr( $text, $position, 1 ) .
1184                         $this->term->color( 0 ) .
1185                         $this->term->color( 34 ) .
1186                         substr( $text, $position + 1, 9 ) .
1187                         $this->term->color( 0 ) .
1188                         '...';
1189                 $display = str_replace( "\n", ' ', $fragment );
1190                 $caret = '   ' .
1191                         str_repeat( ' ', $before ) .
1192                         $this->term->color( 31 ) .
1193                         '^' .
1194                         $this->term->color( 0 );
1195                 return "$display\n$caret";
1196         }
1197 }
1198
1199 class AnsiTermColorer {
1200         function __construct() {
1201         }
1202
1203         /**
1204          * Return ANSI terminal escape code for changing text attribs/color
1205          *
1206          * @param string $color Semicolon-separated list of attribute/color codes
1207          * @return string
1208          */
1209         public function color( $color ) {
1210                 global $wgCommandLineDarkBg;
1211                 $light = $wgCommandLineDarkBg ? "1;" : "0;";
1212                 return "\x1b[{$light}{$color}m";
1213         }
1214
1215         /**
1216          * Return ANSI terminal escape code for restoring default text attributes
1217          *
1218          * @return string
1219          */
1220         public function reset() {
1221                 return $this->color( 0 );
1222         }
1223 }
1224
1225 /* A colour-less terminal */
1226 class DummyTermColorer {
1227         public function color( $color ) {
1228                 return '';
1229         }
1230
1231         public function reset() {
1232                 return '';
1233         }
1234 }
1235
1236 class TestRecorder {
1237         var $parent;
1238         var $term;
1239
1240         function __construct( $parent ) {
1241                 $this->parent = $parent;
1242                 $this->term = $parent->term;
1243         }
1244
1245         function start() {
1246                 $this->total = 0;
1247                 $this->success = 0;
1248         }
1249
1250         function record( $test, $result ) {
1251                 $this->total++;
1252                 $this->success += ($result ? 1 : 0);
1253         }
1254
1255         function end() {
1256                 // dummy
1257         }
1258
1259         function report() {
1260                 if( $this->total > 0 ) {
1261                         $this->reportPercentage( $this->success, $this->total );
1262                 } else {
1263                         wfDie( "No tests found.\n" );
1264                 }
1265         }
1266
1267         function reportPercentage( $success, $total ) {
1268                 $ratio = wfPercent( 100 * $success / $total );
1269                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
1270                 if( $success == $total ) {
1271                         print $this->term->color( 32 ) . "ALL TESTS PASSED!";
1272                 } else {
1273                         $failed = $total - $success ;
1274                         print $this->term->color( 31 ) . "$failed tests failed!";
1275                 }
1276                 print $this->term->reset() . "\n";
1277                 return ($success == $total);
1278         }
1279 }
1280
1281 class DbTestPreviewer extends TestRecorder  {
1282         protected $lb;      ///< Database load balancer
1283         protected $db;      ///< Database connection to the main DB
1284         protected $curRun;  ///< run ID number for the current run
1285         protected $prevRun; ///< run ID number for the previous run, if any
1286         protected $results; ///< Result array
1287
1288         /**
1289          * This should be called before the table prefix is changed
1290          */
1291         function __construct( $parent ) {
1292                 parent::__construct( $parent );
1293                 $this->lb = wfGetLBFactory()->newMainLB();
1294                 // This connection will have the wiki's table prefix, not parsertest_
1295                 $this->db = $this->lb->getConnection( DB_MASTER );
1296         }
1297
1298         /**
1299          * Set up result recording; insert a record for the run with the date
1300          * and all that fun stuff
1301          */
1302         function start() {
1303                 global $wgDBtype, $wgDBprefix;
1304                 parent::start();
1305
1306                 if( ! $this->db->tableExists( 'testrun' )
1307                         or ! $this->db->tableExists( 'testitem' ) )
1308                 {
1309                         print "WARNING> `testrun` table not found in database.\n";
1310                         $this->prevRun = false;
1311                 } else {
1312                         // We'll make comparisons against the previous run later...
1313                         $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
1314                 }
1315                 $this->results = array();
1316         }
1317
1318         function record( $test, $result ) {
1319                 parent::record( $test, $result );
1320                 $this->results[$test] = $result;
1321         }
1322
1323         function report() {
1324                 if( $this->prevRun ) {
1325                         // f = fail, p = pass, n = nonexistent
1326                         // codes show before then after
1327                         $table = array(
1328                                 'fp' => 'previously failing test(s) now PASSING! :)',
1329                                 'pn' => 'previously PASSING test(s) removed o_O',
1330                                 'np' => 'new PASSING test(s) :)',
1331
1332                                 'pf' => 'previously passing test(s) now FAILING! :(',
1333                                 'fn' => 'previously FAILING test(s) removed O_o',
1334                                 'nf' => 'new FAILING test(s) :(',
1335                                 'ff' => 'still FAILING test(s) :(',
1336                         );
1337
1338                         $prevResults = array();
1339
1340                         $res = $this->db->select( 'testitem', array( 'ti_name', 'ti_success' ),
1341                                 array( 'ti_run' => $this->prevRun ), __METHOD__ );
1342                         foreach ( $res as $row ) {
1343                                 if ( !$this->parent->regex
1344                                         || preg_match( "/{$this->parent->regex}/i", $row->ti_name ) )
1345                                 {
1346                                         $prevResults[$row->ti_name] = $row->ti_success;
1347                                 }
1348                         }
1349
1350                         $combined = array_keys( $this->results + $prevResults );
1351
1352                         # Determine breakdown by change type
1353                         $breakdown = array();
1354                         foreach ( $combined as $test ) {
1355                                 if ( !isset( $prevResults[$test] ) ) {
1356                                         $before = 'n';
1357                                 } elseif ( $prevResults[$test] == 1 ) {
1358                                         $before = 'p';
1359                                 } else /* if ( $prevResults[$test] == 0 )*/ {
1360                                         $before = 'f';
1361                                 }
1362                                 if ( !isset( $this->results[$test] ) ) {
1363                                         $after = 'n';
1364                                 } elseif ( $this->results[$test] == 1 ) {
1365                                         $after = 'p';
1366                                 } else /*if ( $this->results[$test] == 0 ) */ {
1367                                         $after = 'f';
1368                                 }
1369                                 $code = $before . $after;
1370                                 if ( isset( $table[$code] ) ) {
1371                                         $breakdown[$code][$test] = $this->getTestStatusInfo( $test, $after );
1372                                 }
1373                         }
1374
1375                         # Write out results
1376                         foreach ( $table as $code => $label ) {
1377                                 if( !empty( $breakdown[$code] ) ) {
1378                                         $count = count($breakdown[$code]);
1379                                         printf( "\n%4d %s\n", $count, $label );
1380                                         foreach ($breakdown[$code] as $differing_test_name => $statusInfo) {
1381                                                 print "      * $differing_test_name  [$statusInfo]\n";
1382                                         }
1383                                 }
1384                         }
1385                 } else {
1386                         print "No previous test runs to compare against.\n";
1387                 }
1388                 print "\n";
1389                 parent::report();
1390         }
1391
1392         /**
1393          ** Returns a string giving information about when a test last had a status change.
1394          ** Could help to track down when regressions were introduced, as distinct from tests
1395          ** which have never passed (which are more change requests than regressions).
1396          */
1397         private function getTestStatusInfo($testname, $after) {
1398
1399                 // If we're looking at a test that has just been removed, then say when it first appeared.
1400                 if ( $after == 'n' ) {
1401                         $changedRun = $this->db->selectField ( 'testitem',
1402                                                                                                    'MIN(ti_run)',
1403                                                                                                    array( 'ti_name' => $testname ),
1404                                                                                                    __METHOD__ );
1405                         $appear = $this->db->selectRow ( 'testrun',
1406                                                                                          array( 'tr_date', 'tr_mw_version' ),
1407                                                                                          array( 'tr_id' => $changedRun ),
1408                                                                                          __METHOD__ );
1409                         return "First recorded appearance: "
1410                                . date( "d-M-Y H:i:s",  strtotime ( $appear->tr_date ) )
1411                                .  ", " . $appear->tr_mw_version;
1412                 }
1413
1414                 // Otherwise, this test has previous recorded results.
1415                 // See when this test last had a different result to what we're seeing now.
1416                 $conds = array(
1417                         'ti_name'    => $testname,
1418                         'ti_success' => ($after == 'f' ? "1" : "0") );
1419                 if ( $this->curRun ) {
1420                         $conds[] = "ti_run != " . $this->db->addQuotes ( $this->curRun );
1421                 }
1422
1423                 $changedRun = $this->db->selectField ( 'testitem', 'MAX(ti_run)', $conds, __METHOD__ );
1424
1425                 // If no record of ever having had a different result.
1426                 if ( is_null ( $changedRun ) ) {
1427                         if ($after == "f") {
1428                                 return "Has never passed";
1429                         } else {
1430                                 return "Has never failed";
1431                         }
1432                 }
1433
1434                 // Otherwise, we're looking at a test whose status has changed.
1435                 // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
1436                 // In this situation, give as much info as we can as to when it changed status.
1437                 $pre  = $this->db->selectRow ( 'testrun',
1438                                                                                 array( 'tr_date', 'tr_mw_version' ),
1439                                                                                 array( 'tr_id' => $changedRun ),
1440                                                                                 __METHOD__ );
1441                 $post = $this->db->selectRow ( 'testrun',
1442                                                                                 array( 'tr_date', 'tr_mw_version' ),
1443                                                                                 array( "tr_id > " . $this->db->addQuotes ( $changedRun) ),
1444                                                                                 __METHOD__,
1445                                                                                 array( "LIMIT" => 1, "ORDER BY" => 'tr_id' )
1446                                                                          );
1447
1448                 if ( $post ) {
1449                         $postDate = date( "d-M-Y H:i:s",  strtotime ( $post->tr_date  ) ) . ", {$post->tr_mw_version}";
1450                 } else {
1451                         $postDate = 'now';
1452                 }
1453                 return ( $after == "f" ? "Introduced" : "Fixed" ) . " between "
1454                                 . date( "d-M-Y H:i:s",  strtotime ( $pre->tr_date ) ) .  ", " . $pre->tr_mw_version
1455                                 . " and $postDate";
1456
1457         }
1458
1459         /**
1460          * Commit transaction and clean up for result recording
1461          */
1462         function end() {
1463                 $this->lb->commitMasterChanges();
1464                 $this->lb->closeAll();
1465                 parent::end();
1466         }
1467
1468 }
1469
1470 class DbTestRecorder extends DbTestPreviewer  {
1471         /**
1472          * Set up result recording; insert a record for the run with the date
1473          * and all that fun stuff
1474          */
1475         function start() {
1476                 global $wgDBtype, $wgDBprefix, $options;
1477                 $this->db->begin();
1478
1479                 if( ! $this->db->tableExists( 'testrun' )
1480                         or ! $this->db->tableExists( 'testitem' ) )
1481                 {
1482                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
1483                         if ($wgDBtype === 'postgres')
1484                                 $this->db->sourceFile( dirname(__FILE__) . '/testRunner.postgres.sql' );
1485                         else
1486                                 $this->db->sourceFile( dirname(__FILE__) . '/testRunner.sql' );
1487                         echo "OK, resuming.\n";
1488                 }
1489
1490                 parent::start();
1491
1492                 $this->db->insert( 'testrun',
1493                         array(
1494                                 'tr_date'        => $this->db->timestamp(),
1495                                 'tr_mw_version'  => isset( $options['setversion'] ) ?
1496                                         $options['setversion'] : SpecialVersion::getVersion(),
1497                                 'tr_php_version' => phpversion(),
1498                                 'tr_db_version'  => $this->db->getServerVersion(),
1499                                 'tr_uname'       => php_uname()
1500                         ),
1501                         __METHOD__ );
1502                         if ($wgDBtype === 'postgres')
1503                                 $this->curRun = $this->db->currentSequenceValue('testrun_id_seq');
1504                         else
1505                                 $this->curRun = $this->db->insertId();
1506         }
1507
1508         /**
1509          * Record an individual test item's success or failure to the db
1510          * @param string $test
1511          * @param bool $result
1512          */
1513         function record( $test, $result ) {
1514                 parent::record( $test, $result );
1515                 $this->db->insert( 'testitem',
1516                         array(
1517                                 'ti_run'     => $this->curRun,
1518                                 'ti_name'    => $test,
1519                                 'ti_success' => $result ? 1 : 0,
1520                         ),
1521                         __METHOD__ );
1522         }
1523 }