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  * @package MediaWiki
  24  * @subpackage Maintenance
  25  */
  26
  27 /** */
  28 $options = array( 'quick', 'color', 'quiet', 'help', 'show-output', 'record' );
  29 $optionsWithArgs = array( 'regex' );
  30
  31 require_once( 'commandLine.inc' );
  32 require_once( "$IP/includes/ObjectCache.php" );
  33 require_once( "$IP/includes/BagOStuff.php" );
  34 require_once( "$IP/includes/Hooks.php" );
  35 require_once( "$IP/maintenance/parserTestsParserHook.php" );
  36 require_once( "$IP/maintenance/parserTestsStaticParserHook.php" );
  37 require_once( "$IP/maintenance/parserTestsParserTime.php" );
  38
  39 /**
  40  * @package MediaWiki
  41  * @subpackage Maintenance
  42  */
  43 class ParserTest {
  44         /**
  45          * boolean $color whereas output should be colorized
  46          * @private
  47          */
  48         var $color;
  49
  50         /**
  51          * boolean $lightcolor whereas output should use light colors
  52          * @private
  53          */
  54         var $lightcolor;
  55
  56         /**
  57          * boolean $showOutput Show test output
  58          */
  59         var $showOutput;
  60
  61         /**
  62          * Sets terminal colorization and diff/quick modes depending on OS and
  63          * command-line options (--color and --quick).
  64          *
  65          * @public
  66          */
  67         function ParserTest() {
  68                 global $options;
  69
  70                 # Only colorize output if stdout is a terminal.
  71                 $this->lightcolor = false;
  72                 $this->color = !wfIsWindows() && posix_isatty(1);
  73
  74                 if( isset( $options['color'] ) ) {
  75                         switch( $options['color'] ) {
  76                         case 'no':
  77                                 $this->color = false;
  78                                 break;
  79                         case 'light':
  80                                 $this->lightcolor = true;
  81                                 # Fall through
  82                         case 'yes':
  83                         default:
  84                                 $this->color = true;
  85                                 break;
  86                         }
  87                 }
  88                 $this->term = $this->color
  89                         ? new AnsiTermColorer( $this->lightcolor )
  90                         : new DummyTermColorer();
  91
  92                 $this->showDiffs = !isset( $options['quick'] );
  93                 $this->showProgress = !isset( $options['quiet'] );
  94                 $this->showFailure = !(
  95                         isset( $options['quiet'] )
  96                         && isset( $options['record'] ) ); // redundant output
  97
  98                 $this->showOutput = isset( $options['show-output'] );
  99
 100
 101                 if (isset($options['regex'])) {
 102                         $this->regex = $options['regex'];
 103                 } else {
 104                         # Matches anything
 105                         $this->regex = '';
 106                 }
 107
 108                 if( isset( $options['record'] ) ) {
 109                         $this->recorder = new DbTestRecorder( $this->term );
 110                 } else {
 111                         $this->recorder = new TestRecorder( $this->term );
 112                 }
 113
 114                 $this->hooks = array();
 115                 $this->functionHooks = array();
 116         }
 117
 118         /**
 119          * Remove last character if it is a newline
 120          * @private
 121          */
 122         function chomp($s) {
 123                 if (substr($s, -1) === "\n") {
 124                         return substr($s, 0, -1);
 125                 }
 126                 else {
 127                         return $s;
 128                 }
 129         }
 130
 131         /**
 132          * Run a series of tests listed in the given text files.
 133          * Each test consists of a brief description, wikitext input,
 134          * and the expected HTML output.
 135          *
 136          * Prints status updates on stdout and counts up the total
 137          * number and percentage of passed tests.
 138          *
 139          * @param array of strings $filenames
 140          * @return bool True if passed all tests, false if any tests failed.
 141          * @public
 142          */
 143         function runTestsFromFiles( $filenames ) {
 144                 $this->recorder->start();
 145                 $ok = true;
 146                 foreach( $filenames as $filename ) {
 147                         $ok = $this->runFile( $filename ) && $ok;
 148                 }
 149                 $this->recorder->end();
 150                 $this->recorder->report();
 151                 return $ok;
 152         }
 153
 154         private function runFile( $filename ) {
 155                 $infile = fopen( $filename, 'rt' );
 156                 if( !$infile ) {
 157                         wfDie( "Couldn't open $filename\n" );
 158                 } else {
 159                         global $IP;
 160                         $relative = wfRelativePath( $filename, $IP );
 161                         print $this->term->color( 1 ) .
 162                                 "Reading tests from \"$relative\"..." .
 163                                 $this->term->reset() .
 164                                 "\n";
 165                 }
 166
 167                 $data = array();
 168                 $section = null;
 169                 $n = 0;
 170                 $ok = true;
 171                 while( false !== ($line = fgets( $infile ) ) ) {
 172                         $n++;
 173                         $matches = array();
 174                         if( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
 175                                 $section = strtolower( $matches[1] );
 176                                 if( $section == 'endarticle') {
 177                                         if( !isset( $data['text'] ) ) {
 178                                                 wfDie( "'endarticle' without 'text' at line $n of $filename\n" );
 179                                         }
 180                                         if( !isset( $data['article'] ) ) {
 181                                                 wfDie( "'endarticle' without 'article' at line $n of $filename\n" );
 182                                         }
 183                                         $this->addArticle($this->chomp($data['article']), $this->chomp($data['text']), $n);
 184                                         $data = array();
 185                                         $section = null;
 186                                         continue;
 187                                 }
 188                                 if( $section == 'endhooks' ) {
 189                                         if( !isset( $data['hooks'] ) ) {
 190                                                 wfDie( "'endhooks' without 'hooks' at line $n of $filename\n" );
 191                                         }
 192                                         foreach( explode( "\n", $data['hooks'] ) as $line ) {
 193                                                 $line = trim( $line );
 194                                                 if( $line ) {
 195                                                         $this->requireHook( $line );
 196                                                 }
 197                                         }
 198                                         $data = array();
 199                                         $section = null;
 200                                         continue;
 201                                 }
 202                                 if( $section == 'endfunctionhooks' ) {
 203                                         if( !isset( $data['functionhooks'] ) ) {
 204                                                 wfDie( "'endfunctionhooks' without 'functionhooks' at line $n of $filename\n" );
 205                                         }
 206                                         foreach( explode( "\n", $data['functionhooks'] ) as $line ) {
 207                                                 $line = trim( $line );
 208                                                 if( $line ) {
 209                                                         $this->requireFunctionHook( $line );
 210                                                 }
 211                                         }
 212                                         $data = array();
 213                                         $section = null;
 214                                         continue;
 215                                 }
 216                                 if( $section == 'end' ) {
 217                                         if( !isset( $data['test'] ) ) {
 218                                                 wfDie( "'end' without 'test' at line $n of $filename\n" );
 219                                         }
 220                                         if( !isset( $data['input'] ) ) {
 221                                                 wfDie( "'end' without 'input' at line $n of $filename\n" );
 222                                         }
 223                                         if( !isset( $data['result'] ) ) {
 224                                                 wfDie( "'end' without 'result' at line $n of $filename\n" );
 225                                         }
 226                                         if( !isset( $data['options'] ) ) {
 227                                                 $data['options'] = '';
 228                                         }
 229                                         else {
 230                                                 $data['options'] = $this->chomp( $data['options'] );
 231                                         }
 232                                         if (preg_match('/\\bdisabled\\b/i', $data['options'])
 233                                                 || !preg_match("/{$this->regex}/i", $data['test'])) {
 234                                                 # disabled test
 235                                                 $data = array();
 236                                                 $section = null;
 237                                                 continue;
 238                                         }
 239                                         $result = $this->runTest(
 240                                                 $this->chomp( $data['test'] ),
 241                                                 $this->chomp( $data['input'] ),
 242                                                 $this->chomp( $data['result'] ),
 243                                                 $this->chomp( $data['options'] ) );
 244                                         $ok = $ok && $result;
 245                                         $this->recorder->record( $this->chomp( $data['test'] ), $result );
 246                                         $data = array();
 247                                         $section = null;
 248                                         continue;
 249                                 }
 250                                 if ( isset ($data[$section] ) ) {
 251                                         wfDie( "duplicate section '$section' at line $n of $filename\n" );
 252                                 }
 253                                 $data[$section] = '';
 254                                 continue;
 255                         }
 256                         if( $section ) {
 257                                 $data[$section] .= $line;
 258                         }
 259                 }
 260                 print "\n";
 261                 return $ok;
 262         }
 263
 264         /**
 265          * Run a given wikitext input through a freshly-constructed wiki parser,
 266          * and compare the output against the expected results.
 267          * Prints status and explanatory messages to stdout.
 268          *
 269          * @param string $input Wikitext to try rendering
 270          * @param string $result Result to output
 271          * @return bool
 272          */
 273         function runTest( $desc, $input, $result, $opts ) {
 274                 if( $this->showProgress ) {
 275                         $this->showTesting( $desc );
 276                 }
 277
 278                 $this->setupGlobals($opts);
 279
 280                 $user = new User();
 281                 $options = ParserOptions::newFromUser( $user );
 282
 283                 if (preg_match('/\\bmath\\b/i', $opts)) {
 284                         # XXX this should probably be done by the ParserOptions
 285                         $options->setUseTex(true);
 286                 }
 287
 288                 $m = array();
 289                 if (preg_match('/title=\[\[(.*)\]\]/', $opts, $m)) {
 290                         $titleText = $m[1];
 291                 }
 292                 else {
 293                         $titleText = 'Parser test';
 294                 }
 295
 296                 $noxml = (bool)preg_match( '~\\b noxml \\b~x', $opts );
 297
 298                 $parser = new Parser();
 299                 foreach( $this->hooks as $tag => $callback ) {
 300                         $parser->setHook( $tag, $callback );
 301                 }
 302                 foreach( $this->functionHooks as $tag => $callback ) {
 303                         $parser->setFunctionHook( $tag, $callback );
 304                 }
 305                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 306
 307                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 308
 309                 $matches = array();
 310                 if (preg_match('/\\bpst\\b/i', $opts)) {
 311                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 312                 } elseif (preg_match('/\\bmsg\\b/i', $opts)) {
 313                         $out = $parser->transformMsg( $input, $options );
 314                 } elseif( preg_match( '/\\bsection=(\d+)\b/i', $opts, $matches ) ) {
 315                         $section = intval( $matches[1] );
 316                         $out = $parser->getSection( $input, $section );
 317                 } elseif( preg_match( '/\\breplace=(\d+),"(.*?)"/i', $opts, $matches ) ) {
 318                         $section = intval( $matches[1] );
 319                         $replace = $matches[2];
 320                         $out = $parser->replaceSection( $input, $section, $replace );
 321                 } else {
 322                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 323                         $out = $output->getText();
 324
 325                         if (preg_match('/\\bill\\b/i', $opts)) {
 326                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 327                         } else if (preg_match('/\\bcat\\b/i', $opts)) {
 328                                 global $wgOut;
 329                                 $wgOut->addCategoryLinks($output->getCategories());
 330                                 $out = $this->tidy ( implode( ' ', $wgOut->getCategoryLinks() ) );
 331                         }
 332
 333                         $result = $this->tidy($result);
 334                 }
 335
 336                 $this->teardownGlobals();
 337
 338                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 339                         return $this->showSuccess( $desc );
 340                 } else {
 341                         return $this->showFailure( $desc, $result, $out );
 342                 }
 343         }
 344
 345         /**
 346          * Set up the global variables for a consistent environment for each test.
 347          * Ideally this should replace the global configuration entirely.
 348          *
 349          * @private
 350          */
 351         function setupGlobals($opts = '') {
 352                 # Save the prefixed / quoted table names for later use when we make the temporaries.
 353                 $db =& wfGetDB( DB_READ );
 354                 $this->oldTableNames = array();
 355                 foreach( $this->listTables() as $table ) {
 356                         $this->oldTableNames[$table] = $db->tableName( $table );
 357                 }
 358                 if( !isset( $this->uploadDir ) ) {
 359                         $this->uploadDir = $this->setupUploadDir();
 360                 }
 361
 362                 $m = array();
 363                 if( preg_match( '/language=([a-z]+(?:_[a-z]+)?)/', $opts, $m ) ) {
 364                         $lang = $m[1];
 365                 } else {
 366                         $lang = 'en';
 367                 }
 368
 369                 if( preg_match( '/variant=([a-z]+(?:-[a-z]+)?)/', $opts, $m ) ) {
 370                         $variant = $m[1];
 371                 } else {
 372                         $variant = false;
 373                 }
 374
 375
 376                 $settings = array(
 377                         'wgServer' => 'http://localhost',
 378                         'wgScript' => '/index.php',
 379                         'wgScriptPath' => '/',
 380                         'wgArticlePath' => '/wiki/$1',
 381                         'wgActionPaths' => array(),
 382                         'wgUploadPath' => 'http://example.com/images',
 383                         'wgUploadDirectory' => $this->uploadDir,
 384                         'wgStyleSheetPath' => '/skins',
 385                         'wgSitename' => 'MediaWiki',
 386                         'wgServerName' => 'Britney Spears',
 387                         'wgLanguageCode' => $lang,
 388                         'wgContLanguageCode' => $lang,
 389                         'wgDBprefix' => 'parsertest_',
 390                         'wgRawHtml' => preg_match('/\\brawhtml\\b/i', $opts),
 391                         'wgLang' => null,
 392                         'wgContLang' => null,
 393                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 394                         'wgMaxTocLevel' => 999,
 395                         'wgCapitalLinks' => true,
 396                         'wgNoFollowLinks' => true,
 397                         'wgThumbnailScriptPath' => false,
 398                         'wgUseTeX' => false,
 399                         'wgLocaltimezone' => 'UTC',
 400                         'wgAllowExternalImages' => true,
 401                         'wgUseTidy' => false,
 402                         'wgDefaultLanguageVariant' => $variant,
 403                         'wgVariantArticlePath' => false,
 404                         );
 405                 $this->savedGlobals = array();
 406                 foreach( $settings as $var => $val ) {
 407                         $this->savedGlobals[$var] = $GLOBALS[$var];
 408                         $GLOBALS[$var] = $val;
 409                 }
 410                 $langObj = Language::factory( $lang );
 411                 $GLOBALS['wgLang'] = $langObj;
 412                 $GLOBALS['wgContLang'] = $langObj;
 413
 414                 $GLOBALS['wgLoadBalancer']->loadMasterPos();
 415                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 416                 $this->setupDatabase();
 417
 418                 global $wgUser;
 419                 $wgUser = new User();
 420         }
 421
 422         # List of temporary tables to create, without prefix
 423         # Some of these probably aren't necessary
 424         function listTables() {
 425                 $tables = array('user', 'page', 'page_restrictions', 'revision', 'text',
 426                         'pagelinks', 'imagelinks', 'categorylinks',
 427                         'templatelinks', 'externallinks', 'langlinks',
 428                         'site_stats', 'hitcounter',
 429                         'ipblocks', 'image', 'oldimage',
 430                         'recentchanges',
 431                         'watchlist', 'math', 'searchindex',
 432                         'interwiki', 'querycache',
 433                         'objectcache', 'job', 'redirect',
 434                         'querycachetwo'
 435                 );
 436
 437                 // FIXME manually adding additional table for the tasks extension
 438                 // we probably need a better software wide system to register new
 439                 // tables.
 440                 global $wgExtensionFunctions;
 441                 if( in_array('wfTasksExtension' , $wgExtensionFunctions ) ) {
 442                         $tables[] = 'tasks';
 443                 }
 444
 445                 return $tables;
 446         }
 447
 448         /**
 449          * Set up a temporary set of wiki tables to work with for the tests.
 450          * Currently this will only be done once per run, and any changes to
 451          * the db will be visible to later tests in the run.
 452          *
 453          * @private
 454          */
 455         function setupDatabase() {
 456                 static $setupDB = false;
 457                 global $wgDBprefix;
 458
 459                 # Make sure we don't mess with the live DB
 460                 if (!$setupDB && $wgDBprefix === 'parsertest_') {
 461                         # oh teh horror
 462                         $GLOBALS['wgLoadBalancer'] = LoadBalancer::newFromParams( $GLOBALS['wgDBservers'] );
 463                         $db =& wfGetDB( DB_MASTER );
 464
 465                         $tables = $this->listTables();
 466
 467                         if (!(strcmp($db->getServerVersion(), '4.1') < 0 and stristr($db->getSoftwareLink(), 'MySQL'))) {
 468                                 # Database that supports CREATE TABLE ... LIKE
 469                                 global $wgDBtype;
 470                                 if( $wgDBtype == 'postgres' ) {
 471                                         $def = 'INCLUDING DEFAULTS';
 472                                 } else {
 473                                         $def = '';
 474                                 }
 475                                 foreach ($tables as $tbl) {
 476                                         $newTableName = $db->tableName( $tbl );
 477                                         $tableName = $this->oldTableNames[$tbl];
 478                                         $db->query("CREATE TEMPORARY TABLE $newTableName (LIKE $tableName $def)");
 479                                 }
 480                         } else {
 481                                 # Hack for MySQL versions < 4.1, which don't support
 482                                 # "CREATE TABLE ... LIKE". Note that
 483                                 # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 484                                 # would not create the indexes we need....
 485                                 foreach ($tables as $tbl) {
 486                                         $res = $db->query("SHOW CREATE TABLE {$this->oldTableNames[$tbl]}");
 487                                         $row = $db->fetchRow($res);
 488                                         $create = $row[1];
 489                                         $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/', 'CREATE TEMPORARY TABLE `'
 490                                                 . $wgDBprefix . $tbl .'`', $create);
 491                                         if ($create === $create_tmp) {
 492                                                 # Couldn't do replacement
 493                                                 wfDie("could not create temporary table $tbl");
 494                                         }
 495                                         $db->query($create_tmp);
 496                                 }
 497
 498                         }
 499
 500                         # Hack: insert a few Wikipedia in-project interwiki prefixes,
 501                         # for testing inter-language links
 502                         $db->insert( 'interwiki', array(
 503                                 array( 'iw_prefix' => 'Wikipedia',
 504                                        'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 505                                        'iw_local'  => 0 ),
 506                                 array( 'iw_prefix' => 'MeatBall',
 507                                        'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 508                                        'iw_local'  => 0 ),
 509                                 array( 'iw_prefix' => 'zh',
 510                                        'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 511                                        'iw_local'  => 1 ),
 512                                 array( 'iw_prefix' => 'es',
 513                                        'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 514                                        'iw_local'  => 1 ),
 515                                 array( 'iw_prefix' => 'fr',
 516                                        'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 517                                        'iw_local'  => 1 ),
 518                                 array( 'iw_prefix' => 'ru',
 519                                        'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 520                                        'iw_local'  => 1 ),
 521                                 ) );
 522
 523                         # Hack: Insert an image to work with
 524                         $db->insert( 'image', array(
 525                                 'img_name'        => 'Foobar.jpg',
 526                                 'img_size'        => 12345,
 527                                 'img_description' => 'Some lame file',
 528                                 'img_user'        => 1,
 529                                 'img_user_text'   => 'WikiSysop',
 530                                 'img_timestamp'   => $db->timestamp( '20010115123500' ),
 531                                 'img_width'       => 1941,
 532                                 'img_height'      => 220,
 533                                 'img_bits'        => 24,
 534                                 'img_media_type'  => MEDIATYPE_BITMAP,
 535                                 'img_major_mime'  => "image",
 536                                 'img_minor_mime'  => "jpeg",
 537                                 'img_metadata'    => serialize( array() ),
 538                                 ) );
 539
 540                         # Update certain things in site_stats
 541                         $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 542
 543                         $setupDB = true;
 544                 }
 545         }
 546
 547         /**
 548          * Create a dummy uploads directory which will contain a couple
 549          * of files in order to pass existence tests.
 550          * @return string The directory
 551          * @private
 552          */
 553         function setupUploadDir() {
 554                 global $IP;
 555
 556                 $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 557                 mkdir( $dir );
 558                 mkdir( $dir . '/3' );
 559                 mkdir( $dir . '/3/3a' );
 560
 561                 $img = "$IP/skins/monobook/headbg.jpg";
 562                 $h = fopen($img, 'r');
 563                 $c = fread($h, filesize($img));
 564                 fclose($h);
 565
 566                 $f = fopen( $dir . '/3/3a/Foobar.jpg', 'wb' );
 567                 fwrite( $f, $c );
 568                 fclose( $f );
 569                 return $dir;
 570         }
 571
 572         /**
 573          * Restore default values and perform any necessary clean-up
 574          * after each test runs.
 575          *
 576          * @private
 577          */
 578         function teardownGlobals() {
 579                 foreach( $this->savedGlobals as $var => $val ) {
 580                         $GLOBALS[$var] = $val;
 581                 }
 582                 if( isset( $this->uploadDir ) ) {
 583                         $this->teardownUploadDir( $this->uploadDir );
 584                         unset( $this->uploadDir );
 585                 }
 586         }
 587
 588         /**
 589          * Remove the dummy uploads directory
 590          * @private
 591          */
 592         function teardownUploadDir( $dir ) {
 593                 // delete the files first, then the dirs.
 594                 self::deleteFiles(
 595                         array (
 596                                 "$dir/3/3a/Foobar.jpg",
 597                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
 598                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
 599                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
 600                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
 601                         )
 602                 );
 603
 604                 self::deleteDirs(
 605                         array (
 606                                 "$dir/3/3a",
 607                                 "$dir/3",
 608                                 "$dir/thumb/6/65",
 609                                 "$dir/thumb/6",
 610                                 "$dir/thumb/3/3a/Foobar.jpg",
 611                                 "$dir/thumb/3/3a",
 612                                 "$dir/thumb/3",
 613                                 "$dir/thumb",
 614                                 "$dir",
 615                         )
 616                 );
 617         }
 618
 619         /**
 620          * @desc delete the specified files, if they exist.
 621          * @param array $files full paths to files to delete.
 622          */
 623         private static function deleteFiles( $files ) {
 624                 foreach( $files as $file ) {
 625                         if( file_exists( $file ) ) {
 626                                 unlink( $file );
 627                         }
 628                 }
 629         }
 630
 631         /**
 632          * @desc delete the specified directories, if they exist. Must be empty.
 633          * @param array $dirs full paths to directories to delete.
 634          */
 635         private static function deleteDirs( $dirs ) {
 636                 foreach( $dirs as $dir ) {
 637                         if( is_dir( $dir ) ) {
 638                                 rmdir( $dir );
 639                         }
 640                 }
 641         }
 642
 643         /**
 644          * "Running test $desc..."
 645          * @private
 646          */
 647         function showTesting( $desc ) {
 648                 print "Running test $desc... ";
 649         }
 650
 651         /**
 652          * Print a happy success message.
 653          *
 654          * @param string $desc The test name
 655          * @return bool
 656          * @private
 657          */
 658         function showSuccess( $desc ) {
 659                 if( $this->showProgress ) {
 660                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
 661                 }
 662                 return true;
 663         }
 664
 665         /**
 666          * Print a failure message and provide some explanatory output
 667          * about what went wrong if so configured.
 668          *
 669          * @param string $desc The test name
 670          * @param string $result Expected HTML output
 671          * @param string $html Actual HTML output
 672          * @return bool
 673          * @private
 674          */
 675         function showFailure( $desc, $result, $html ) {
 676                 if( $this->showFailure ) {
 677                         if( !$this->showProgress ) {
 678                                 # In quiet mode we didn't show the 'Testing' message before the
 679                                 # test, in case it succeeded. Show it now:
 680                                 $this->showTesting( $desc );
 681                         }
 682                         print $this->term->color( '1;31' ) . 'FAILED!' . $this->term->reset() . "\n";
 683                         if ( $this->showOutput ) {
 684                                 print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
 685                         }
 686                         if( $this->showDiffs ) {
 687                                 print $this->quickDiff( $result, $html );
 688                                 if( !$this->wellFormed( $html ) ) {
 689                                         print "XML error: $this->mXmlError\n";
 690                                 }
 691                         }
 692                 }
 693                 return false;
 694         }
 695
 696         /**
 697          * Run given strings through a diff and return the (colorized) output.
 698          * Requires writable /tmp directory and a 'diff' command in the PATH.
 699          *
 700          * @param string $input
 701          * @param string $output
 702          * @param string $inFileTail Tailing for the input file name
 703          * @param string $outFileTail Tailing for the output file name
 704          * @return string
 705          * @private
 706          */
 707         function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
 708                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
 709
 710                 $infile = "$prefix-$inFileTail";
 711                 $this->dumpToFile( $input, $infile );
 712
 713                 $outfile = "$prefix-$outFileTail";
 714                 $this->dumpToFile( $output, $outfile );
 715
 716                 $diff = `diff -au $infile $outfile`;
 717                 unlink( $infile );
 718                 unlink( $outfile );
 719
 720                 return $this->colorDiff( $diff );
 721         }
 722
 723         /**
 724          * Write the given string to a file, adding a final newline.
 725          *
 726          * @param string $data
 727          * @param string $filename
 728          * @private
 729          */
 730         function dumpToFile( $data, $filename ) {
 731                 $file = fopen( $filename, "wt" );
 732                 fwrite( $file, $data . "\n" );
 733                 fclose( $file );
 734         }
 735
 736         /**
 737          * Colorize unified diff output if set for ANSI color output.
 738          * Subtractions are colored blue, additions red.
 739          *
 740          * @param string $text
 741          * @return string
 742          * @private
 743          */
 744         function colorDiff( $text ) {
 745                 return preg_replace(
 746                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 747                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
 748                                $this->term->color( 31 ) . '$1' . $this->term->reset() ),
 749                         $text );
 750         }
 751
 752         /**
 753          * Insert a temporary test article
 754          * @param string $name the title, including any prefix
 755          * @param string $text the article text
 756          * @param int $line the input line number, for reporting errors
 757          * @private
 758          */
 759         function addArticle($name, $text, $line) {
 760                 $this->setupGlobals();
 761                 $title = Title::newFromText( $name );
 762                 if ( is_null($title) ) {
 763                         wfDie( "invalid title at line $line\n" );
 764                 }
 765
 766                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
 767                 if ($aid != 0) {
 768                         wfDie( "duplicate article at line $line\n" );
 769                 }
 770
 771                 $art = new Article($title);
 772                 $art->insertNewArticle($text, '', false, false );
 773                 $this->teardownGlobals();
 774         }
 775
 776         /**
 777          * Steal a callback function from the primary parser, save it for
 778          * application to our scary parser. If the hook is not installed,
 779          * die a painful dead to warn the others.
 780          * @param string $name
 781          */
 782         private function requireHook( $name ) {
 783                 global $wgParser;
 784                 if( isset( $wgParser->mTagHooks[$name] ) ) {
 785                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
 786                 } else {
 787                         wfDie( "This test suite requires the '$name' hook extension.\n" );
 788                 }
 789         }
 790
 791         /**
 792          * Steal a callback function from the primary parser, save it for
 793          * application to our scary parser. If the hook is not installed,
 794          * die a painful dead to warn the others.
 795          * @param string $name
 796          */
 797         private function requireFunctionHook( $name ) {
 798                 global $wgParser;
 799                 if( isset( $wgParser->mFunctionHooks[$name] ) ) {
 800                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
 801                 } else {
 802                         wfDie( "This test suite requires the '$name' function hook extension.\n" );
 803                 }
 804         }
 805
 806         /*
 807          * Run the "tidy" command on text if the $wgUseTidy
 808          * global is true
 809          *
 810          * @param string $text the text to tidy
 811          * @return string
 812          * @static
 813          * @private
 814          */
 815         function tidy( $text ) {
 816                 global $wgUseTidy;
 817                 if ($wgUseTidy) {
 818                         $text = Parser::tidy($text);
 819                 }
 820                 return $text;
 821         }
 822
 823         function wellFormed( $text ) {
 824                 $html =
 825                         Sanitizer::hackDocType() .
 826                         '<html>' .
 827                         $text .
 828                         '</html>';
 829
 830                 $parser = xml_parser_create( "UTF-8" );
 831
 832                 # case folding violates XML standard, turn it off
 833                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 834
 835                 if( !xml_parse( $parser, $html, true ) ) {
 836                         $err = xml_error_string( xml_get_error_code( $parser ) );
 837                         $position = xml_get_current_byte_index( $parser );
 838                         $fragment = $this->extractFragment( $html, $position );
 839                         $this->mXmlError = "$err at byte $position:\n$fragment";
 840                         xml_parser_free( $parser );
 841                         return false;
 842                 }
 843                 xml_parser_free( $parser );
 844                 return true;
 845         }
 846
 847         function extractFragment( $text, $position ) {
 848                 $start = max( 0, $position - 10 );
 849                 $before = $position - $start;
 850                 $fragment = '...' .
 851                         $this->term->color( 34 ) .
 852                         substr( $text, $start, $before ) .
 853                         $this->term->color( 0 ) .
 854                         $this->term->color( 31 ) .
 855                         $this->term->color( 1 ) .
 856                         substr( $text, $position, 1 ) .
 857                         $this->term->color( 0 ) .
 858                         $this->term->color( 34 ) .
 859                         substr( $text, $position + 1, 9 ) .
 860                         $this->term->color( 0 ) .
 861                         '...';
 862                 $display = str_replace( "\n", ' ', $fragment );
 863                 $caret = '   ' .
 864                         str_repeat( ' ', $before ) .
 865                         $this->term->color( 31 ) .
 866                         '^' .
 867                         $this->term->color( 0 );
 868                 return "$display\n$caret";
 869         }
 870 }
 871
 872 class AnsiTermColorer {
 873         function __construct( $light ) {
 874                 $this->light = $light;
 875         }
 876
 877         /**
 878          * Return ANSI terminal escape code for changing text attribs/color
 879          *
 880          * @param string $color Semicolon-separated list of attribute/color codes
 881          * @return string
 882          * @private
 883          */
 884         function color( $color ) {
 885                 $light = $this->light ? "1;" : "";
 886                 return "\x1b[{$light}{$color}m";
 887         }
 888
 889         /**
 890          * Return ANSI terminal escape code for restoring default text attributes
 891          *
 892          * @return string
 893          * @private
 894          */
 895         function reset() {
 896                 return "\x1b[0m";
 897         }
 898 }
 899
 900 /* A colour-less terminal */
 901 class DummyTermColorer {
 902         function color( $color ) {
 903                 return '';
 904         }
 905
 906         function reset() {
 907                 return '';
 908         }
 909 }
 910
 911 class TestRecorder {
 912         function __construct( $term ) {
 913                 $this->term = $term;
 914         }
 915
 916         function start() {
 917                 $this->total = 0;
 918                 $this->success = 0;
 919         }
 920
 921         function record( $test, $result ) {
 922                 $this->total++;
 923                 $this->success += ($result ? 1 : 0);
 924         }
 925
 926         function end() {
 927                 // dummy
 928         }
 929
 930         function report() {
 931                 if( $this->total > 0 ) {
 932                         $this->reportPercentage( $this->success, $this->total );
 933                 } else {
 934                         wfDie( "No tests found.\n" );
 935                 }
 936         }
 937
 938         function reportPercentage( $success, $total ) {
 939                 $ratio = wfPercent( 100 * $success / $total );
 940                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
 941                 if( $success == $total ) {
 942                         print $this->term->color( 32 ) . "PASSED!";
 943                 } else {
 944                         print $this->term->color( 31 ) . "FAILED!";
 945                 }
 946                 print $this->term->reset() . "\n";
 947                 return ($success == $total);
 948         }
 949 }
 950
 951 class DbTestRecorder extends TestRecorder  {
 952         private $db;      ///< Database connection to the main DB
 953         private $curRun;  ///< run ID number for the current run
 954         private $prevRun; ///< run ID number for the previous run, if any
 955
 956         function __construct( $term ) {
 957                 parent::__construct( $term );
 958                 $this->db = wfGetDB( DB_MASTER );
 959         }
 960
 961         /**
 962          * Set up result recording; insert a record for the run with the date
 963          * and all that fun stuff
 964          */
 965         function start() {
 966                 parent::start();
 967
 968                 $this->db->begin();
 969
 970                 if( ! $this->db->tableExists( 'testrun' ) or ! $this->db->tableExists( 'testitem') ) {
 971                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
 972                         dbsource( 'testRunner.sql',  $this->db );
 973                         echo "OK, resuming.\n";
 974                 }
 975
 976                 // We'll make comparisons against the previous run later...
 977                 $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
 978
 979                 $this->db->insert( 'testrun',
 980                         array(
 981                                 'tr_date'        => $this->db->timestamp(),
 982                                 'tr_mw_version'  => SpecialVersion::getVersion(),
 983                                 'tr_php_version' => phpversion(),
 984                                 'tr_db_version'  => $this->db->getServerVersion(),
 985                                 'tr_uname'       => php_uname()
 986                         ),
 987                         __METHOD__ );
 988                 $this->curRun = $this->db->insertId();
 989         }
 990
 991         /**
 992          * Record an individual test item's success or failure to the db
 993          * @param string $test
 994          * @param bool $result
 995          */
 996         function record( $test, $result ) {
 997                 parent::record( $test, $result );
 998                 $this->db->insert( 'testitem',
 999                         array(
1000                                 'ti_run'     => $this->curRun,
1001                                 'ti_name'    => $test,
1002                                 'ti_success' => $result ? 1 : 0,
1003                         ),
1004                         __METHOD__ );
1005         }
1006
1007         /**
1008          * Commit transaction and clean up for result recording
1009          */
1010         function end() {
1011                 $this->db->commit();
1012                 parent::end();
1013         }
1014
1015         function report() {
1016                 if( $this->prevRun ) {
1017                         $table = array(
1018                                 array( 'previously failing test(s) now PASSING! :)', 0, 1 ),
1019                                 array( 'previously PASSING test(s) removed o_O', 1, null ),
1020                                 array( 'new PASSING test(s) :)', null, 1 ),
1021
1022                                 array( 'previously passing test(s) now FAILING! :(', 1, 0 ),
1023                                 array( 'previously FAILING test(s) removed O_o', 0, null ),
1024                                 array( 'new FAILING test(s) :(', null, 0 ),
1025                                 array( 'still FAILING test(s) :(', 0, 0 ),
1026                         );
1027                         foreach( $table as $criteria ) {
1028                                 list( $label, $before, $after ) = $criteria;
1029                                 $differences = $this->compareResult( $before, $after );
1030                                 if( $differences ) {
1031                                         $count = count($differences);
1032                                         printf( "%4d %s\n", $count, $label );
1033                                         foreach ($differences as $differing_test_name) {
1034                                                 print "      * $differing_test_name\n";
1035                                         }
1036                                 }
1037                         }
1038                 } else {
1039                         print "No previous test runs to compare against.\n";
1040                 }
1041                 parent::report();
1042         }
1043
1044         /**
1045          ** @desc: Returns an array of the test names with changed results, based on the specified
1046          **        before/after criteria.
1047          */
1048         private function compareResult( $before, $after ) {
1049                 $testitem = $this->db->tableName( 'testitem' );
1050                 $prevRun = intval( $this->prevRun );
1051                 $curRun = intval( $this->curRun );
1052                 $prevStatus = $this->condition( $before );
1053                 $curStatus = $this->condition( $after );
1054
1055                 // note: requires mysql >= ver 4.1 for subselects
1056                 if( is_null( $after ) ) {
1057                         $sql = "
1058                                 select prev.ti_name as t from $testitem as prev
1059                                         where prev.ti_run=$prevRun and
1060                                                 prev.ti_success $prevStatus and
1061                                                 (select current.ti_success from $testitem as current
1062                                                         where current.ti_run=$curRun
1063                                                                 and prev.ti_name=current.ti_name) $curStatus";
1064                 } else {
1065                         $sql = "
1066                                 select current.ti_name as t from $testitem as current
1067                                         where current.ti_run=$curRun and
1068                                                 current.ti_success $curStatus and
1069                                                 (select prev.ti_success from $testitem as prev
1070                                                         where prev.ti_run=$prevRun
1071                                                                 and prev.ti_name=current.ti_name) $prevStatus";
1072                 }
1073                 $result = $this->db->query( $sql, __METHOD__ );
1074                 $retval = array();
1075                 while ($row = $this->db->fetchObject( $result )) {
1076                         $retval[] = $row->t;
1077                 }
1078                 $this->db->freeResult( $result );
1079                 return $retval;
1080         }
1081
1082         /**
1083          ** @desc: Helper function for compareResult() database querying.
1084          */
1085         private function condition( $value ) {
1086                 if( is_null( $value ) ) {
1087                         return 'IS NULL';
1088                 } else {
1089                         return '=' . intval( $value );
1090                 }
1091         }
1092
1093 }
1094
1095 ?>