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