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 (!isset( $data['config'] ) )
 357                                                 $data['config'] = '';
 358
 359                                         if (preg_match('/\\bdisabled\\b/i', $data['options'])
 360                                                 || !preg_match("/{$this->regex}/i", $data['test'])) {
 361                                                 # disabled test
 362                                                 $data = array();
 363                                                 $section = null;
 364                                                 continue;
 365                                         }
 366                                         $result = $this->runTest(
 367                                                 $this->chomp( $data['test'] ),
 368                                                 $this->chomp( $data['input'] ),
 369                                                 $this->chomp( $data['result'] ),
 370                                                 $this->chomp( $data['options'] ),
 371                                                 $this->chomp( $data['config']   )
 372                                                 );
 373                                         $ok = $ok && $result;
 374                                         $this->recorder->record( $this->chomp( $data['test'] ), $result );
 375                                         $data = array();
 376                                         $section = null;
 377                                         continue;
 378                                 }
 379                                 if ( isset ($data[$section] ) ) {
 380                                         wfDie( "duplicate section '$section' at line $n of $filename\n" );
 381                                 }
 382                                 $data[$section] = '';
 383                                 continue;
 384                         }
 385                         if( $section ) {
 386                                 $data[$section] .= $line;
 387                         }
 388                 }
 389                 if ( $this->showProgress ) {
 390                         print "\n";
 391                 }
 392                 return $ok;
 393         }
 394
 395         /**
 396          * Get a Parser object
 397          */
 398         function getParser() {
 399                 global $wgParserConf;
 400                 $class = $wgParserConf['class'];
 401                 $parser = new $class( $wgParserConf );
 402                 foreach( $this->hooks as $tag => $callback ) {
 403                         $parser->setHook( $tag, $callback );
 404                 }
 405                 foreach( $this->functionHooks as $tag => $bits ) {
 406                         list( $callback, $flags ) = $bits;
 407                         $parser->setFunctionHook( $tag, $callback, $flags );
 408                 }
 409                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 410                 return $parser;
 411         }
 412
 413         /**
 414          * Run a given wikitext input through a freshly-constructed wiki parser,
 415          * and compare the output against the expected results.
 416          * Prints status and explanatory messages to stdout.
 417          *
 418          * @param string $input Wikitext to try rendering
 419          * @param string $result Result to output
 420          * @return bool
 421          */
 422         private function runTest( $desc, $input, $result, $opts, $config ) {
 423                 if( $this->showProgress ) {
 424                         $this->showTesting( $desc );
 425                 }
 426
 427                 $this->setupGlobals($opts, $config);
 428
 429                 $user = new User();
 430                 $options = ParserOptions::newFromUser( $user );
 431
 432                 if (preg_match('/\\bmath\\b/i', $opts)) {
 433                         # XXX this should probably be done by the ParserOptions
 434                         $options->setUseTex(true);
 435                 }
 436
 437                 $m = array();
 438                 if (preg_match('/title=\[\[(.*)\]\]/', $opts, $m)) {
 439                         $titleText = $m[1];
 440                 }
 441                 else {
 442                         $titleText = 'Parser test';
 443                 }
 444
 445                 $noxml = (bool)preg_match( '~\\b noxml \\b~x', $opts );
 446                 $parser = $this->getParser();
 447                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 448
 449                 $matches = array();
 450                 if (preg_match('/\\bpst\\b/i', $opts)) {
 451                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 452                 } elseif (preg_match('/\\bmsg\\b/i', $opts)) {
 453                         $out = $parser->transformMsg( $input, $options );
 454                 } elseif( preg_match( '/\\bsection=([\w-]+)\b/i', $opts, $matches ) ) {
 455                         $section = $matches[1];
 456                         $out = $parser->getSection( $input, $section );
 457                 } elseif( preg_match( '/\\breplace=([\w-]+),"(.*?)"/i', $opts, $matches ) ) {
 458                         $section = $matches[1];
 459                         $replace = $matches[2];
 460                         $out = $parser->replaceSection( $input, $section, $replace );
 461                 } else {
 462                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 463                         $out = $output->getText();
 464
 465                         if (preg_match('/\\bill\\b/i', $opts)) {
 466                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 467                         } else if (preg_match('/\\bcat\\b/i', $opts)) {
 468                                 global $wgOut;
 469                                 $wgOut->addCategoryLinks($output->getCategories());
 470                                 $cats = $wgOut->getCategoryLinks();
 471                                 if ( isset( $cats['normal'] ) ) {
 472                                         $out = $this->tidy( implode( ' ', $cats['normal'] ) );
 473                                 } else {
 474                                         $out = '';
 475                                 }
 476                         }
 477
 478                         $result = $this->tidy($result);
 479                 }
 480
 481                 $this->teardownGlobals();
 482
 483                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 484                         return $this->showSuccess( $desc );
 485                 } else {
 486                         return $this->showFailure( $desc, $result, $out );
 487                 }
 488         }
 489
 490
 491         /**
 492          * Use a regex to find out the value of an option
 493          * @param $regex A regex, the first group will be the value returned
 494          * @param $opts Options line to look in
 495          * @param $defaults Default value returned if the regex does not match
 496          */
 497         private static function getOptionValue( $regex, $opts, $default ) {
 498                 $m = array();
 499                 if( preg_match( $regex, $opts, $m ) ) {
 500                         return $m[1];
 501                 } else {
 502                         return $default;
 503                 }
 504         }
 505
 506         /**
 507          * Set up the global variables for a consistent environment for each test.
 508          * Ideally this should replace the global configuration entirely.
 509          */
 510         private function setupGlobals($opts = '', $config = '') {
 511                 if( !isset( $this->uploadDir ) ) {
 512                         $this->uploadDir = $this->setupUploadDir();
 513                 }
 514
 515                 # Find out values for some special options.
 516                 $lang =
 517                         self::getOptionValue( '/language=([a-z]+(?:_[a-z]+)?)/', $opts, 'en' );
 518                 $variant =
 519                         self::getOptionValue( '/variant=([a-z]+(?:-[a-z]+)?)/', $opts, false );
 520                 $maxtoclevel =
 521                         self::getOptionValue( '/wgMaxTocLevel=(\d+)/', $opts, 999 );
 522                 $linkHolderBatchSize =
 523                         self::getOptionValue( '/wgLinkHolderBatchSize=(\d+)/', $opts, 1000 );
 524
 525                 $settings = array(
 526                         'wgServer' => 'http://localhost',
 527                         'wgScript' => '/index.php',
 528                         'wgScriptPath' => '/',
 529                         'wgArticlePath' => '/wiki/$1',
 530                         'wgActionPaths' => array(),
 531                         'wgLocalFileRepo' => array(
 532                                 'class' => 'LocalRepo',
 533                                 'name' => 'local',
 534                                 'directory' => $this->uploadDir,
 535                                 'url' => 'http://example.com/images',
 536                                 'hashLevels' => 2,
 537                                 'transformVia404' => false,
 538                         ),
 539                         'wgEnableUploads' => true,
 540                         'wgStyleSheetPath' => '/skins',
 541                         'wgSitename' => 'MediaWiki',
 542                         'wgServerName' => 'Britney Spears',
 543                         'wgLanguageCode' => $lang,
 544                         'wgContLanguageCode' => $lang,
 545                         'wgDBprefix' => 'parsertest_',
 546                         'wgRawHtml' => preg_match('/\\brawhtml\\b/i', $opts),
 547                         'wgLang' => null,
 548                         'wgContLang' => null,
 549                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 550                         'wgMaxTocLevel' => $maxtoclevel,
 551                         'wgCapitalLinks' => true,
 552                         'wgNoFollowLinks' => true,
 553                         'wgNoFollowDomainExceptions' => array(),
 554                         'wgThumbnailScriptPath' => false,
 555                         'wgUseTeX' => false,
 556                         'wgLocaltimezone' => 'UTC',
 557                         'wgAllowExternalImages' => true,
 558                         'wgUseTidy' => false,
 559                         'wgDefaultLanguageVariant' => $variant,
 560                         'wgVariantArticlePath' => false,
 561                         'wgGroupPermissions' => array( '*' => array(
 562                                 'createaccount' => true,
 563                                 'read'          => true,
 564                                 'edit'          => true,
 565                                 'createpage'    => true,
 566                                 'createtalk'    => true,
 567                         ) ),
 568                         'wgNamespaceProtection' => array( NS_MEDIAWIKI => 'editinterface' ),
 569                         'wgDefaultExternalStore' => array(),
 570                         'wgForeignFileRepos' => array(),
 571                         'wgLinkHolderBatchSize' => $linkHolderBatchSize,
 572                         'wgEnforceHtmlIds' => true,
 573                         'wgExternalLinkTarget' => false,
 574                         'wgAlwaysUseTidy' => false,
 575                         );
 576
 577                 if ($config) {
 578                         $configLines = explode( "\n", $config );
 579
 580                         foreach( $configLines as $line ) {
 581                                 list( $var, $value ) = explode( '=', $line, 2 );
 582
 583                                 $settings[$var] = eval("return $value;" );
 584                         }
 585                 }
 586
 587                 $this->savedGlobals = array();
 588                 foreach( $settings as $var => $val ) {
 589                         $this->savedGlobals[$var] = $GLOBALS[$var];
 590                         $GLOBALS[$var] = $val;
 591                 }
 592                 $langObj = Language::factory( $lang );
 593                 $GLOBALS['wgLang'] = $langObj;
 594                 $GLOBALS['wgContLang'] = $langObj;
 595                 $GLOBALS['wgMemc'] = new FakeMemCachedClient;
 596
 597                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 598
 599                 global $wgUser;
 600                 $wgUser = new User();
 601         }
 602
 603         /**
 604          * List of temporary tables to create, without prefix.
 605          * Some of these probably aren't necessary.
 606          */
 607         private function listTables() {
 608                 global $wgDBtype;
 609                 $tables = array('user', 'page', 'page_restrictions',
 610                         'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
 611                         'categorylinks', 'templatelinks', 'externallinks', 'langlinks',
 612                         'site_stats', 'hitcounter',     'ipblocks', 'image', 'oldimage',
 613                         'recentchanges', 'watchlist', 'math', 'interwiki',
 614                         'querycache', 'objectcache', 'job', 'redirect', 'querycachetwo',
 615                         'archive', 'user_groups', 'page_props', 'category'
 616                 );
 617
 618                 if ($wgDBtype === 'mysql')
 619                         array_push( $tables, 'searchindex' );
 620
 621                 // Allow extensions to add to the list of tables to duplicate;
 622                 // may be necessary if they hook into page save or other code
 623                 // which will require them while running tests.
 624                 wfRunHooks( 'ParserTestTables', array( &$tables ) );
 625
 626                 return $tables;
 627         }
 628
 629         /**
 630          * Set up a temporary set of wiki tables to work with for the tests.
 631          * Currently this will only be done once per run, and any changes to
 632          * the db will be visible to later tests in the run.
 633          */
 634         private function setupDatabase() {
 635                 global $wgDBprefix, $wgDBtype;
 636                 if ( $this->databaseSetupDone ) {
 637                         return;
 638                 }
 639                 if ( $wgDBprefix === 'parsertest_' ) {
 640                         throw new MWException( 'setupDatabase should be called before setupGlobals' );
 641                 }
 642                 $this->databaseSetupDone = true;
 643                 $this->oldTablePrefix = $wgDBprefix;
 644
 645                 # CREATE TEMPORARY TABLE breaks if there is more than one server
 646                 # FIXME: r40209 makes temporary tables break even with just one server
 647                 # FIXME: (bug 15892); disabling the feature entirely as a temporary fix
 648                 if ( true || wfGetLB()->getServerCount() != 1 ) {
 649                         $this->useTemporaryTables = false;
 650                 }
 651
 652                 $temporary = $this->useTemporaryTables ? 'TEMPORARY' : '';
 653
 654                 $db = wfGetDB( DB_MASTER );
 655                 $tables = $this->listTables();
 656
 657                 if ( !( $wgDBtype == 'mysql' && strcmp( $db->getServerVersion(), '4.1' ) < 0 ) ) {
 658                         # Database that supports CREATE TABLE ... LIKE
 659
 660                         if( $wgDBtype == 'postgres' ) {
 661                                 $def = 'INCLUDING DEFAULTS';
 662                                 $temporary = 'TEMPORARY';
 663                         } else {
 664                                 $def = '';
 665                         }
 666                         foreach ( $tables as $tbl ) {
 667                                 # Clean up from previous aborted run.  So that table escaping
 668                                 # works correctly across DB engines, we need to change the pre-
 669                                 # fix back and forth so tableName() works right.
 670                                 $this->changePrefix( $this->oldTablePrefix );
 671                                 $oldTableName = $db->tableName( $tbl );
 672                                 $this->changePrefix( 'parsertest_' );
 673                                 $newTableName = $db->tableName( $tbl );
 674
 675                                 if ( $db->tableExists( $tbl ) && $wgDBtype != 'postgres' ) {
 676                                         $db->query( "DROP TABLE $newTableName" );
 677                                 }
 678                                 # Create new table
 679                                 $db->query( "CREATE $temporary TABLE $newTableName (LIKE $oldTableName $def)" );
 680                         }
 681                 } else {
 682                         # Hack for MySQL versions < 4.1, which don't support
 683                         # "CREATE TABLE ... LIKE". Note that
 684                         # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 685                         # would not create the indexes we need....
 686                         #
 687                         # Note that we don't bother changing around the prefixes here be-
 688                         # cause we know we're using MySQL anyway.
 689                         foreach ($tables as $tbl) {
 690                                 $oldTableName = $db->tableName( $tbl );
 691                                 $res = $db->query("SHOW CREATE TABLE $oldTableName");
 692                                 $row = $db->fetchRow($res);
 693                                 $create = $row[1];
 694                                 $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/',
 695                                         "CREATE $temporary TABLE `parsertest_$tbl`", $create);
 696                                 if ($create === $create_tmp) {
 697                                         # Couldn't do replacement
 698                                         wfDie("could not create temporary table $tbl");
 699                                 }
 700                                 $db->query($create_tmp);
 701                         }
 702                 }
 703
 704                 $this->changePrefix( 'parsertest_' );
 705
 706                 # Hack: insert a few Wikipedia in-project interwiki prefixes,
 707                 # for testing inter-language links
 708                 $db->insert( 'interwiki', array(
 709                         array( 'iw_prefix' => 'wikipedia',
 710                                    'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 711                                    'iw_local'  => 0 ),
 712                         array( 'iw_prefix' => 'meatball',
 713                                    'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 714                                    'iw_local'  => 0 ),
 715                         array( 'iw_prefix' => 'zh',
 716                                    'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 717                                    'iw_local'  => 1 ),
 718                         array( 'iw_prefix' => 'es',
 719                                    'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 720                                    'iw_local'  => 1 ),
 721                         array( 'iw_prefix' => 'fr',
 722                                    'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 723                                    'iw_local'  => 1 ),
 724                         array( 'iw_prefix' => 'ru',
 725                                    'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 726                                    'iw_local'  => 1 ),
 727                         ) );
 728
 729                 # Hack: Insert an image to work with
 730                 $db->insert( 'image', array(
 731                         'img_name'        => 'Foobar.jpg',
 732                         'img_size'        => 12345,
 733                         'img_description' => 'Some lame file',
 734                         'img_user'        => 1,
 735                         'img_user_text'   => 'WikiSysop',
 736                         'img_timestamp'   => $db->timestamp( '20010115123500' ),
 737                         'img_width'       => 1941,
 738                         'img_height'      => 220,
 739                         'img_bits'        => 24,
 740                         'img_media_type'  => MEDIATYPE_BITMAP,
 741                         'img_major_mime'  => "image",
 742                         'img_minor_mime'  => "jpeg",
 743                         'img_metadata'    => serialize( array() ),
 744                         ) );
 745
 746                 # Update certain things in site_stats
 747                 $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 748         }
 749
 750         /**
 751          * Change the table prefix on all open DB connections/
 752          */
 753         protected function changePrefix( $prefix ) {
 754                 global $wgDBprefix;
 755                 wfGetLBFactory()->forEachLB( array( $this, 'changeLBPrefix' ), array( $prefix ) );
 756                 $wgDBprefix = $prefix;
 757         }
 758
 759         public function changeLBPrefix( $lb, $prefix ) {
 760                 $lb->forEachOpenConnection( array( $this, 'changeDBPrefix' ), array( $prefix ) );
 761         }
 762
 763         public function changeDBPrefix( $db, $prefix ) {
 764                 $db->tablePrefix( $prefix );
 765         }
 766
 767         private function teardownDatabase() {
 768                 global $wgDBprefix;
 769                 if ( !$this->databaseSetupDone ) {
 770                         return;
 771                 }
 772                 $this->changePrefix( $this->oldTablePrefix );
 773                 $this->databaseSetupDone = false;
 774                 if ( $this->useTemporaryTables ) {
 775                         # Don't need to do anything
 776                         return;
 777                 }
 778
 779                 /*
 780                 $tables = $this->listTables();
 781                 $db = wfGetDB( DB_MASTER );
 782                 foreach ( $tables as $table ) {
 783                         $db->query( "DROP TABLE `parsertest_$table`" );
 784                 }*/
 785         }
 786
 787         /**
 788          * Create a dummy uploads directory which will contain a couple
 789          * of files in order to pass existence tests.
 790          * @return string The directory
 791          */
 792         private function setupUploadDir() {
 793                 global $IP;
 794                 if ( $this->keepUploads ) {
 795                         $dir = wfTempDir() . '/mwParser-images';
 796                         if ( is_dir( $dir ) ) {
 797                                 return $dir;
 798                         }
 799                 } else {
 800                         $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 801                 }
 802
 803                 wfDebug( "Creating upload directory $dir\n" );
 804                 if ( file_exists( $dir ) ) {
 805                         wfDebug( "Already exists!\n" );
 806                         return $dir;
 807                 }
 808                 wfMkdirParents( $dir . '/3/3a' );
 809                 copy( "$IP/skins/monobook/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
 810                 return $dir;
 811         }
 812
 813         /**
 814          * Restore default values and perform any necessary clean-up
 815          * after each test runs.
 816          */
 817         private function teardownGlobals() {
 818                 RepoGroup::destroySingleton();
 819                 FileCache::destroySingleton();
 820                 LinkCache::singleton()->clear();
 821                 foreach( $this->savedGlobals as $var => $val ) {
 822                         $GLOBALS[$var] = $val;
 823                 }
 824                 if( isset( $this->uploadDir ) ) {
 825                         $this->teardownUploadDir( $this->uploadDir );
 826                         unset( $this->uploadDir );
 827                 }
 828         }
 829
 830         /**
 831          * Remove the dummy uploads directory
 832          */
 833         private function teardownUploadDir( $dir ) {
 834                 if ( $this->keepUploads ) {
 835                         return;
 836                 }
 837
 838                 // delete the files first, then the dirs.
 839                 self::deleteFiles(
 840                         array (
 841                                 "$dir/3/3a/Foobar.jpg",
 842                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
 843                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
 844                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
 845                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
 846                         )
 847                 );
 848
 849                 self::deleteDirs(
 850                         array (
 851                                 "$dir/3/3a",
 852                                 "$dir/3",
 853                                 "$dir/thumb/6/65",
 854                                 "$dir/thumb/6",
 855                                 "$dir/thumb/3/3a/Foobar.jpg",
 856                                 "$dir/thumb/3/3a",
 857                                 "$dir/thumb/3",
 858                                 "$dir/thumb",
 859                                 "$dir",
 860                         )
 861                 );
 862         }
 863
 864         /**
 865          * Delete the specified files, if they exist.
 866          * @param array $files full paths to files to delete.
 867          */
 868         private static function deleteFiles( $files ) {
 869                 foreach( $files as $file ) {
 870                         if( file_exists( $file ) ) {
 871                                 unlink( $file );
 872                         }
 873                 }
 874         }
 875
 876         /**
 877          * Delete the specified directories, if they exist. Must be empty.
 878          * @param array $dirs full paths to directories to delete.
 879          */
 880         private static function deleteDirs( $dirs ) {
 881                 foreach( $dirs as $dir ) {
 882                         if( is_dir( $dir ) ) {
 883                                 rmdir( $dir );
 884                         }
 885                 }
 886         }
 887
 888         /**
 889          * "Running test $desc..."
 890          */
 891         protected function showTesting( $desc ) {
 892                 print "Running test $desc... ";
 893         }
 894
 895         /**
 896          * Print a happy success message.
 897          *
 898          * @param string $desc The test name
 899          * @return bool
 900          */
 901         protected function showSuccess( $desc ) {
 902                 if( $this->showProgress ) {
 903                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
 904                 }
 905                 return true;
 906         }
 907
 908         /**
 909          * Print a failure message and provide some explanatory output
 910          * about what went wrong if so configured.
 911          *
 912          * @param string $desc The test name
 913          * @param string $result Expected HTML output
 914          * @param string $html Actual HTML output
 915          * @return bool
 916          */
 917         protected function showFailure( $desc, $result, $html ) {
 918                 if( $this->showFailure ) {
 919                         if( !$this->showProgress ) {
 920                                 # In quiet mode we didn't show the 'Testing' message before the
 921                                 # test, in case it succeeded. Show it now:
 922                                 $this->showTesting( $desc );
 923                         }
 924                         print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
 925                         if ( $this->showOutput ) {
 926                                 print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
 927                         }
 928                         if( $this->showDiffs ) {
 929                                 print $this->quickDiff( $result, $html );
 930                                 if( !$this->wellFormed( $html ) ) {
 931                                         print "XML error: $this->mXmlError\n";
 932                                 }
 933                         }
 934                 }
 935                 return false;
 936         }
 937
 938         /**
 939          * Run given strings through a diff and return the (colorized) output.
 940          * Requires writable /tmp directory and a 'diff' command in the PATH.
 941          *
 942          * @param string $input
 943          * @param string $output
 944          * @param string $inFileTail Tailing for the input file name
 945          * @param string $outFileTail Tailing for the output file name
 946          * @return string
 947          */
 948         protected function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
 949                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
 950
 951                 $infile = "$prefix-$inFileTail";
 952                 $this->dumpToFile( $input, $infile );
 953
 954                 $outfile = "$prefix-$outFileTail";
 955                 $this->dumpToFile( $output, $outfile );
 956
 957                 $diff = `diff -au $infile $outfile`;
 958                 unlink( $infile );
 959                 unlink( $outfile );
 960
 961                 return $this->colorDiff( $diff );
 962         }
 963
 964         /**
 965          * Write the given string to a file, adding a final newline.
 966          *
 967          * @param string $data
 968          * @param string $filename
 969          */
 970         private function dumpToFile( $data, $filename ) {
 971                 $file = fopen( $filename, "wt" );
 972                 fwrite( $file, $data . "\n" );
 973                 fclose( $file );
 974         }
 975
 976         /**
 977          * Colorize unified diff output if set for ANSI color output.
 978          * Subtractions are colored blue, additions red.
 979          *
 980          * @param string $text
 981          * @return string
 982          */
 983         protected function colorDiff( $text ) {
 984                 return preg_replace(
 985                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 986                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
 987                                $this->term->color( 31 ) . '$1' . $this->term->reset() ),
 988                         $text );
 989         }
 990
 991         /**
 992          * Show "Reading tests from ..."
 993          *
 994          * @param String $path
 995          */
 996         protected function showRunFile( $path ){
 997                 print $this->term->color( 1 ) .
 998                         "Reading tests from \"$path\"..." .
 999                         $this->term->reset() .
1000                         "\n";
1001         }
1002
1003         /**
1004          * Insert a temporary test article
1005          * @param string $name the title, including any prefix
1006          * @param string $text the article text
1007          * @param int $line the input line number, for reporting errors
1008          */
1009         private function addArticle($name, $text, $line) {
1010                 $this->setupGlobals();
1011                 $title = Title::newFromText( $name );
1012                 if ( is_null($title) ) {
1013                         wfDie( "invalid title at line $line\n" );
1014                 }
1015
1016                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
1017                 if ($aid != 0) {
1018                         wfDie( "duplicate article at line $line\n" );
1019                 }
1020
1021                 $art = new Article($title);
1022                 $art->insertNewArticle($text, '', false, false );
1023                 $this->teardownGlobals();
1024         }
1025
1026         /**
1027          * Steal a callback function from the primary parser, save it for
1028          * application to our scary parser. If the hook is not installed,
1029          * die a painful dead to warn the others.
1030          * @param string $name
1031          */
1032         private function requireHook( $name ) {
1033                 global $wgParser;
1034                 if( isset( $wgParser->mTagHooks[$name] ) ) {
1035                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
1036                 } else {
1037                         wfDie( "This test suite requires the '$name' hook extension.\n" );
1038                 }
1039         }
1040
1041         /**
1042          * Steal a callback function from the primary parser, save it for
1043          * application to our scary parser. If the hook is not installed,
1044          * die a painful dead to warn the others.
1045          * @param string $name
1046          */
1047         private function requireFunctionHook( $name ) {
1048                 global $wgParser;
1049                 if( isset( $wgParser->mFunctionHooks[$name] ) ) {
1050                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
1051                 } else {
1052                         wfDie( "This test suite requires the '$name' function hook extension.\n" );
1053                 }
1054         }
1055
1056         /*
1057          * Run the "tidy" command on text if the $wgUseTidy
1058          * global is true
1059          *
1060          * @param string $text the text to tidy
1061          * @return string
1062          * @static
1063          */
1064         private function tidy( $text ) {
1065                 global $wgUseTidy;
1066                 if ($wgUseTidy) {
1067                         $text = Parser::tidy($text);
1068                 }
1069                 return $text;
1070         }
1071
1072         private function wellFormed( $text ) {
1073                 $html =
1074                         Sanitizer::hackDocType() .
1075                         '<html>' .
1076                         $text .
1077                         '</html>';
1078
1079                 $parser = xml_parser_create( "UTF-8" );
1080
1081                 # case folding violates XML standard, turn it off
1082                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
1083
1084                 if( !xml_parse( $parser, $html, true ) ) {
1085                         $err = xml_error_string( xml_get_error_code( $parser ) );
1086                         $position = xml_get_current_byte_index( $parser );
1087                         $fragment = $this->extractFragment( $html, $position );
1088                         $this->mXmlError = "$err at byte $position:\n$fragment";
1089                         xml_parser_free( $parser );
1090                         return false;
1091                 }
1092                 xml_parser_free( $parser );
1093                 return true;
1094         }
1095
1096         private function extractFragment( $text, $position ) {
1097                 $start = max( 0, $position - 10 );
1098                 $before = $position - $start;
1099                 $fragment = '...' .
1100                         $this->term->color( 34 ) .
1101                         substr( $text, $start, $before ) .
1102                         $this->term->color( 0 ) .
1103                         $this->term->color( 31 ) .
1104                         $this->term->color( 1 ) .
1105                         substr( $text, $position, 1 ) .
1106                         $this->term->color( 0 ) .
1107                         $this->term->color( 34 ) .
1108                         substr( $text, $position + 1, 9 ) .
1109                         $this->term->color( 0 ) .
1110                         '...';
1111                 $display = str_replace( "\n", ' ', $fragment );
1112                 $caret = '   ' .
1113                         str_repeat( ' ', $before ) .
1114                         $this->term->color( 31 ) .
1115                         '^' .
1116                         $this->term->color( 0 );
1117                 return "$display\n$caret";
1118         }
1119 }
1120
1121 class AnsiTermColorer {
1122         function __construct() {
1123         }
1124
1125         /**
1126          * Return ANSI terminal escape code for changing text attribs/color
1127          *
1128          * @param string $color Semicolon-separated list of attribute/color codes
1129          * @return string
1130          */
1131         public function color( $color ) {
1132                 global $wgCommandLineDarkBg;
1133                 $light = $wgCommandLineDarkBg ? "1;" : "0;";
1134                 return "\x1b[{$light}{$color}m";
1135         }
1136
1137         /**
1138          * Return ANSI terminal escape code for restoring default text attributes
1139          *
1140          * @return string
1141          */
1142         public function reset() {
1143                 return $this->color( 0 );
1144         }
1145 }
1146
1147 /* A colour-less terminal */
1148 class DummyTermColorer {
1149         public function color( $color ) {
1150                 return '';
1151         }
1152
1153         public function reset() {
1154                 return '';
1155         }
1156 }
1157
1158 class TestRecorder {
1159         var $parent;
1160         var $term;
1161
1162         function __construct( $parent ) {
1163                 $this->parent = $parent;
1164                 $this->term = $parent->term;
1165         }
1166
1167         function start() {
1168                 $this->total = 0;
1169                 $this->success = 0;
1170         }
1171
1172         function record( $test, $result ) {
1173                 $this->total++;
1174                 $this->success += ($result ? 1 : 0);
1175         }
1176
1177         function end() {
1178                 // dummy
1179         }
1180
1181         function report() {
1182                 if( $this->total > 0 ) {
1183                         $this->reportPercentage( $this->success, $this->total );
1184                 } else {
1185                         wfDie( "No tests found.\n" );
1186                 }
1187         }
1188
1189         function reportPercentage( $success, $total ) {
1190                 $ratio = wfPercent( 100 * $success / $total );
1191                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
1192                 if( $success == $total ) {
1193                         print $this->term->color( 32 ) . "ALL TESTS PASSED!";
1194                 } else {
1195                         $failed = $total - $success ;
1196                         print $this->term->color( 31 ) . "$failed tests failed!";
1197                 }
1198                 print $this->term->reset() . "\n";
1199                 return ($success == $total);
1200         }
1201 }
1202
1203 class DbTestPreviewer extends TestRecorder  {
1204         protected $lb;      ///< Database load balancer
1205         protected $db;      ///< Database connection to the main DB
1206         protected $curRun;  ///< run ID number for the current run
1207         protected $prevRun; ///< run ID number for the previous run, if any
1208         protected $results; ///< Result array
1209
1210         /**
1211          * This should be called before the table prefix is changed
1212          */
1213         function __construct( $parent ) {
1214                 parent::__construct( $parent );
1215                 $this->lb = wfGetLBFactory()->newMainLB();
1216                 // This connection will have the wiki's table prefix, not parsertest_
1217                 $this->db = $this->lb->getConnection( DB_MASTER );
1218         }
1219
1220         /**
1221          * Set up result recording; insert a record for the run with the date
1222          * and all that fun stuff
1223          */
1224         function start() {
1225                 global $wgDBtype, $wgDBprefix;
1226                 parent::start();
1227
1228                 if( ! $this->db->tableExists( 'testrun' )
1229                         or ! $this->db->tableExists( 'testitem' ) )
1230                 {
1231                         print "WARNING> `testrun` table not found in database.\n";
1232                         $this->prevRun = false;
1233                 } else {
1234                         // We'll make comparisons against the previous run later...
1235                         $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
1236                 }
1237                 $this->results = array();
1238         }
1239
1240         function record( $test, $result ) {
1241                 parent::record( $test, $result );
1242                 $this->results[$test] = $result;
1243         }
1244
1245         function report() {
1246                 if( $this->prevRun ) {
1247                         // f = fail, p = pass, n = nonexistent
1248                         // codes show before then after
1249                         $table = array(
1250                                 'fp' => 'previously failing test(s) now PASSING! :)',
1251                                 'pn' => 'previously PASSING test(s) removed o_O',
1252                                 'np' => 'new PASSING test(s) :)',
1253
1254                                 'pf' => 'previously passing test(s) now FAILING! :(',
1255                                 'fn' => 'previously FAILING test(s) removed O_o',
1256                                 'nf' => 'new FAILING test(s) :(',
1257                                 'ff' => 'still FAILING test(s) :(',
1258                         );
1259
1260                         $prevResults = array();
1261
1262                         $res = $this->db->select( 'testitem', array( 'ti_name', 'ti_success' ),
1263                                 array( 'ti_run' => $this->prevRun ), __METHOD__ );
1264                         foreach ( $res as $row ) {
1265                                 if ( !$this->parent->regex
1266                                         || preg_match( "/{$this->parent->regex}/i", $row->ti_name ) )
1267                                 {
1268                                         $prevResults[$row->ti_name] = $row->ti_success;
1269                                 }
1270                         }
1271
1272                         $combined = array_keys( $this->results + $prevResults );
1273
1274                         # Determine breakdown by change type
1275                         $breakdown = array();
1276                         foreach ( $combined as $test ) {
1277                                 if ( !isset( $prevResults[$test] ) ) {
1278                                         $before = 'n';
1279                                 } elseif ( $prevResults[$test] == 1 ) {
1280                                         $before = 'p';
1281                                 } else /* if ( $prevResults[$test] == 0 )*/ {
1282                                         $before = 'f';
1283                                 }
1284                                 if ( !isset( $this->results[$test] ) ) {
1285                                         $after = 'n';
1286                                 } elseif ( $this->results[$test] == 1 ) {
1287                                         $after = 'p';
1288                                 } else /*if ( $this->results[$test] == 0 ) */ {
1289                                         $after = 'f';
1290                                 }
1291                                 $code = $before . $after;
1292                                 if ( isset( $table[$code] ) ) {
1293                                         $breakdown[$code][$test] = $this->getTestStatusInfo( $test, $after );
1294                                 }
1295                         }
1296
1297                         # Write out results
1298                         foreach ( $table as $code => $label ) {
1299                                 if( !empty( $breakdown[$code] ) ) {
1300                                         $count = count($breakdown[$code]);
1301                                         printf( "\n%4d %s\n", $count, $label );
1302                                         foreach ($breakdown[$code] as $differing_test_name => $statusInfo) {
1303                                                 print "      * $differing_test_name  [$statusInfo]\n";
1304                                         }
1305                                 }
1306                         }
1307                 } else {
1308                         print "No previous test runs to compare against.\n";
1309                 }
1310                 print "\n";
1311                 parent::report();
1312         }
1313
1314         /**
1315          ** Returns a string giving information about when a test last had a status change.
1316          ** Could help to track down when regressions were introduced, as distinct from tests
1317          ** which have never passed (which are more change requests than regressions).
1318          */
1319         private function getTestStatusInfo($testname, $after) {
1320
1321                 // If we're looking at a test that has just been removed, then say when it first appeared.
1322                 if ( $after == 'n' ) {
1323                         $changedRun = $this->db->selectField ( 'testitem',
1324                                                                                                    'MIN(ti_run)',
1325                                                                                                    array( 'ti_name' => $testname ),
1326                                                                                                    __METHOD__ );
1327                         $appear = $this->db->selectRow ( 'testrun',
1328                                                                                          array( 'tr_date', 'tr_mw_version' ),
1329                                                                                          array( 'tr_id' => $changedRun ),
1330                                                                                          __METHOD__ );
1331                         return "First recorded appearance: "
1332                                . date( "d-M-Y H:i:s",  strtotime ( $appear->tr_date ) )
1333                                .  ", " . $appear->tr_mw_version;
1334                 }
1335
1336                 // Otherwise, this test has previous recorded results.
1337                 // See when this test last had a different result to what we're seeing now.
1338                 $conds = array(
1339                         'ti_name'    => $testname,
1340                         'ti_success' => ($after == 'f' ? "1" : "0") );
1341                 if ( $this->curRun ) {
1342                         $conds[] = "ti_run != " . $this->db->addQuotes ( $this->curRun );
1343                 }
1344
1345                 $changedRun = $this->db->selectField ( 'testitem', 'MAX(ti_run)', $conds, __METHOD__ );
1346
1347                 // If no record of ever having had a different result.
1348                 if ( is_null ( $changedRun ) ) {
1349                         if ($after == "f") {
1350                                 return "Has never passed";
1351                         } else {
1352                                 return "Has never failed";
1353                         }
1354                 }
1355
1356                 // Otherwise, we're looking at a test whose status has changed.
1357                 // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
1358                 // In this situation, give as much info as we can as to when it changed status.
1359                 $pre  = $this->db->selectRow ( 'testrun',
1360                                                                                 array( 'tr_date', 'tr_mw_version' ),
1361                                                                                 array( 'tr_id' => $changedRun ),
1362                                                                                 __METHOD__ );
1363                 $post = $this->db->selectRow ( 'testrun',
1364                                                                                 array( 'tr_date', 'tr_mw_version' ),
1365                                                                                 array( "tr_id > " . $this->db->addQuotes ( $changedRun) ),
1366                                                                                 __METHOD__,
1367                                                                                 array( "LIMIT" => 1, "ORDER BY" => 'tr_id' )
1368                                                                          );
1369
1370                 if ( $post ) {
1371                         $postDate = date( "d-M-Y H:i:s",  strtotime ( $post->tr_date  ) ) . ", {$post->tr_mw_version}";
1372                 } else {
1373                         $postDate = 'now';
1374                 }
1375                 return ( $after == "f" ? "Introduced" : "Fixed" ) . " between "
1376                                 . date( "d-M-Y H:i:s",  strtotime ( $pre->tr_date ) ) .  ", " . $pre->tr_mw_version
1377                                 . " and $postDate";
1378
1379         }
1380
1381         /**
1382          * Commit transaction and clean up for result recording
1383          */
1384         function end() {
1385                 $this->lb->commitMasterChanges();
1386                 $this->lb->closeAll();
1387                 parent::end();
1388         }
1389
1390 }
1391
1392 class DbTestRecorder extends DbTestPreviewer  {
1393         /**
1394          * Set up result recording; insert a record for the run with the date
1395          * and all that fun stuff
1396          */
1397         function start() {
1398                 global $wgDBtype, $wgDBprefix;
1399                 $this->db->begin();
1400
1401                 if( ! $this->db->tableExists( 'testrun' )
1402                         or ! $this->db->tableExists( 'testitem' ) )
1403                 {
1404                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
1405                         if ($wgDBtype === 'postgres')
1406                                 $this->db->sourceFile( dirname(__FILE__) . '/testRunner.postgres.sql' );
1407                         else
1408                                 $this->db->sourceFile( dirname(__FILE__) . '/testRunner.sql' );
1409                         echo "OK, resuming.\n";
1410                 }
1411
1412                 parent::start();
1413
1414                 $this->db->insert( 'testrun',
1415                         array(
1416                                 'tr_date'        => $this->db->timestamp(),
1417                                 'tr_mw_version'  => SpecialVersion::getVersion(),
1418                                 'tr_php_version' => phpversion(),
1419                                 'tr_db_version'  => $this->db->getServerVersion(),
1420                                 'tr_uname'       => php_uname()
1421                         ),
1422                         __METHOD__ );
1423                         if ($wgDBtype === 'postgres')
1424                                 $this->curRun = $this->db->currentSequenceValue('testrun_id_seq');
1425                         else
1426                                 $this->curRun = $this->db->insertId();
1427         }
1428
1429         /**
1430          * Record an individual test item's success or failure to the db
1431          * @param string $test
1432          * @param bool $result
1433          */
1434         function record( $test, $result ) {
1435                 parent::record( $test, $result );
1436                 $this->db->insert( 'testitem',
1437                         array(
1438                                 'ti_run'     => $this->curRun,
1439                                 'ti_name'    => $test,
1440                                 'ti_success' => $result ? 1 : 0,
1441                         ),
1442                         __METHOD__ );
1443         }
1444 }