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 $optionsWithArgs = array( 'regex' );
  30
  31 require_once( 'commandLine.inc' );
  32 require_once( "$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          * Sets terminal colorization and diff/quick modes depending on OS and
  52          * command-line options (--color and --quick).
  53          */
  54         public function ParserTest() {
  55                 global $options;
  56
  57                 # Only colorize output if stdout is a terminal.
  58                 $this->color = !wfIsWindows() && posix_isatty(1);
  59
  60                 if( isset( $options['color'] ) ) {
  61                         switch( $options['color'] ) {
  62                         case 'no':
  63                                 $this->color = false;
  64                                 break;
  65                         case 'yes':
  66                         default:
  67                                 $this->color = true;
  68                                 break;
  69                         }
  70                 }
  71                 $this->term = $this->color
  72                         ? new AnsiTermColorer()
  73                         : new DummyTermColorer();
  74
  75                 $this->showDiffs = !isset( $options['quick'] );
  76                 $this->showProgress = !isset( $options['quiet'] );
  77                 $this->showFailure = !(
  78                         isset( $options['quiet'] )
  79                         && ( isset( $options['record'] )
  80                                 || isset( $options['compare'] ) ) ); // redundant output
  81
  82                 $this->showOutput = isset( $options['show-output'] );
  83
  84
  85                 if (isset($options['regex'])) {
  86                         $this->regex = $options['regex'];
  87                 } else {
  88                         # Matches anything
  89                         $this->regex = '';
  90                 }
  91
  92                 if( isset( $options['record'] ) ) {
  93                         $this->recorder = new DbTestRecorder( $this->term );
  94                 } elseif( isset( $options['compare'] ) ) {
  95                         $this->recorder = new DbTestPreviewer( $this->term );
  96                 } else {
  97                         $this->recorder = new TestRecorder( $this->term );
  98                 }
  99                 $this->keepUploads = isset( $options['keep-uploads'] );
 100
 101                 $this->hooks = array();
 102                 $this->functionHooks = array();
 103         }
 104
 105         /**
 106          * Remove last character if it is a newline
 107          */
 108         private function chomp($s) {
 109                 if (substr($s, -1) === "\n") {
 110                         return substr($s, 0, -1);
 111                 }
 112                 else {
 113                         return $s;
 114                 }
 115         }
 116
 117         /**
 118          * Run a series of tests listed in the given text files.
 119          * Each test consists of a brief description, wikitext input,
 120          * and the expected HTML output.
 121          *
 122          * Prints status updates on stdout and counts up the total
 123          * number and percentage of passed tests.
 124          *
 125          * @param array of strings $filenames
 126          * @return bool True if passed all tests, false if any tests failed.
 127          */
 128         public function runTestsFromFiles( $filenames ) {
 129                 $this->recorder->start();
 130                 $ok = true;
 131                 foreach( $filenames as $filename ) {
 132                         $ok = $this->runFile( $filename ) && $ok;
 133                 }
 134                 $this->recorder->report();
 135                 $this->recorder->end();
 136                 return $ok;
 137         }
 138
 139         private function runFile( $filename ) {
 140                 $infile = fopen( $filename, 'rt' );
 141                 if( !$infile ) {
 142                         wfDie( "Couldn't open $filename\n" );
 143                 } else {
 144                         global $IP;
 145                         $relative = wfRelativePath( $filename, $IP );
 146                         $this->showRunFile( $relative );
 147                 }
 148
 149                 $data = array();
 150                 $section = null;
 151                 $n = 0;
 152                 $ok = true;
 153                 while( false !== ($line = fgets( $infile ) ) ) {
 154                         $n++;
 155                         $matches = array();
 156                         if( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
 157                                 $section = strtolower( $matches[1] );
 158                                 if( $section == 'endarticle') {
 159                                         if( !isset( $data['text'] ) ) {
 160                                                 wfDie( "'endarticle' without 'text' at line $n of $filename\n" );
 161                                         }
 162                                         if( !isset( $data['article'] ) ) {
 163                                                 wfDie( "'endarticle' without 'article' at line $n of $filename\n" );
 164                                         }
 165                                         $this->addArticle($this->chomp($data['article']), $this->chomp($data['text']), $n);
 166                                         $data = array();
 167                                         $section = null;
 168                                         continue;
 169                                 }
 170                                 if( $section == 'endhooks' ) {
 171                                         if( !isset( $data['hooks'] ) ) {
 172                                                 wfDie( "'endhooks' without 'hooks' at line $n of $filename\n" );
 173                                         }
 174                                         foreach( explode( "\n", $data['hooks'] ) as $line ) {
 175                                                 $line = trim( $line );
 176                                                 if( $line ) {
 177                                                         $this->requireHook( $line );
 178                                                 }
 179                                         }
 180                                         $data = array();
 181                                         $section = null;
 182                                         continue;
 183                                 }
 184                                 if( $section == 'endfunctionhooks' ) {
 185                                         if( !isset( $data['functionhooks'] ) ) {
 186                                                 wfDie( "'endfunctionhooks' without 'functionhooks' at line $n of $filename\n" );
 187                                         }
 188                                         foreach( explode( "\n", $data['functionhooks'] ) as $line ) {
 189                                                 $line = trim( $line );
 190                                                 if( $line ) {
 191                                                         $this->requireFunctionHook( $line );
 192                                                 }
 193                                         }
 194                                         $data = array();
 195                                         $section = null;
 196                                         continue;
 197                                 }
 198                                 if( $section == 'end' ) {
 199                                         if( !isset( $data['test'] ) ) {
 200                                                 wfDie( "'end' without 'test' at line $n of $filename\n" );
 201                                         }
 202                                         if( !isset( $data['input'] ) ) {
 203                                                 wfDie( "'end' without 'input' at line $n of $filename\n" );
 204                                         }
 205                                         if( !isset( $data['result'] ) ) {
 206                                                 wfDie( "'end' without 'result' at line $n of $filename\n" );
 207                                         }
 208                                         if( !isset( $data['options'] ) ) {
 209                                                 $data['options'] = '';
 210                                         }
 211                                         else {
 212                                                 $data['options'] = $this->chomp( $data['options'] );
 213                                         }
 214                                         if (preg_match('/\\bdisabled\\b/i', $data['options'])
 215                                                 || !preg_match("/{$this->regex}/i", $data['test'])) {
 216                                                 # disabled test
 217                                                 $data = array();
 218                                                 $section = null;
 219                                                 continue;
 220                                         }
 221                                         $result = $this->runTest(
 222                                                 $this->chomp( $data['test'] ),
 223                                                 $this->chomp( $data['input'] ),
 224                                                 $this->chomp( $data['result'] ),
 225                                                 $this->chomp( $data['options'] ) );
 226                                         $ok = $ok && $result;
 227                                         $this->recorder->record( $this->chomp( $data['test'] ), $result );
 228                                         $data = array();
 229                                         $section = null;
 230                                         continue;
 231                                 }
 232                                 if ( isset ($data[$section] ) ) {
 233                                         wfDie( "duplicate section '$section' at line $n of $filename\n" );
 234                                 }
 235                                 $data[$section] = '';
 236                                 continue;
 237                         }
 238                         if( $section ) {
 239                                 $data[$section] .= $line;
 240                         }
 241                 }
 242                 if ( $this->showProgress ) {
 243                         print "\n";
 244                 }
 245                 return $ok;
 246         }
 247
 248         /**
 249          * Run a given wikitext input through a freshly-constructed wiki parser,
 250          * and compare the output against the expected results.
 251          * Prints status and explanatory messages to stdout.
 252          *
 253          * @param string $input Wikitext to try rendering
 254          * @param string $result Result to output
 255          * @return bool
 256          */
 257         private function runTest( $desc, $input, $result, $opts ) {
 258                 global $wgParserConf;
 259                 if( $this->showProgress ) {
 260                         $this->showTesting( $desc );
 261                 }
 262
 263                 $this->setupGlobals($opts);
 264
 265                 $user = new User();
 266                 $options = ParserOptions::newFromUser( $user );
 267
 268                 if (preg_match('/\\bmath\\b/i', $opts)) {
 269                         # XXX this should probably be done by the ParserOptions
 270                         $options->setUseTex(true);
 271                 }
 272
 273                 $m = array();
 274                 if (preg_match('/title=\[\[(.*)\]\]/', $opts, $m)) {
 275                         $titleText = $m[1];
 276                 }
 277                 else {
 278                         $titleText = 'Parser test';
 279                 }
 280
 281                 $noxml = (bool)preg_match( '~\\b noxml \\b~x', $opts );
 282
 283                 $class = $wgParserConf['class'];
 284                 $parser = new $class( $wgParserConf );
 285                 foreach( $this->hooks as $tag => $callback ) {
 286                         $parser->setHook( $tag, $callback );
 287                 }
 288                 foreach( $this->functionHooks as $tag => $bits ) {
 289                         list( $callback, $flags ) = $bits;
 290                         $parser->setFunctionHook( $tag, $callback, $flags );
 291                 }
 292                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 293
 294                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 295
 296                 $matches = array();
 297                 if (preg_match('/\\bpst\\b/i', $opts)) {
 298                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 299                 } elseif (preg_match('/\\bmsg\\b/i', $opts)) {
 300                         $out = $parser->transformMsg( $input, $options );
 301                 } elseif( preg_match( '/\\bsection=([\w-]+)\b/i', $opts, $matches ) ) {
 302                         $section = $matches[1];
 303                         $out = $parser->getSection( $input, $section );
 304                 } elseif( preg_match( '/\\breplace=([\w-]+),"(.*?)"/i', $opts, $matches ) ) {
 305                         $section = $matches[1];
 306                         $replace = $matches[2];
 307                         $out = $parser->replaceSection( $input, $section, $replace );
 308                 } else {
 309                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 310                         $out = $output->getText();
 311
 312                         if (preg_match('/\\bill\\b/i', $opts)) {
 313                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 314                         } else if (preg_match('/\\bcat\\b/i', $opts)) {
 315                                 global $wgOut;
 316                                 $wgOut->addCategoryLinks($output->getCategories());
 317                                 $cats = $wgOut->getCategoryLinks();
 318                                 $out = $this->tidy( implode( ' ', $cats['normal'] ) );
 319                         }
 320
 321                         $result = $this->tidy($result);
 322                 }
 323
 324                 $this->teardownGlobals();
 325
 326                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 327                         return $this->showSuccess( $desc );
 328                 } else {
 329                         return $this->showFailure( $desc, $result, $out );
 330                 }
 331         }
 332
 333
 334         /**
 335          * Use a regex to find out the value of an option
 336          * @param $regex A regex, the first group will be the value returned
 337          * @param $opts Options line to look in
 338          * @param $defaults Default value returned if the regex does not match
 339          */
 340         private static function getOptionValue( $regex, $opts, $default ) {
 341                 $m = array();
 342                 if( preg_match( $regex, $opts, $m ) ) {
 343                         return $m[1];
 344                 } else {
 345                         return $default;
 346                 }
 347         }
 348
 349         /**
 350          * Set up the global variables for a consistent environment for each test.
 351          * Ideally this should replace the global configuration entirely.
 352          */
 353         private function setupGlobals($opts = '') {
 354                 # Save the prefixed / quoted table names for later use when we make the temporaries.
 355                 $db = wfGetDB( DB_SLAVE );
 356                 $this->oldTableNames = array();
 357                 foreach( $this->listTables() as $table ) {
 358                         $this->oldTableNames[$table] = $db->tableName( $table );
 359                 }
 360                 if( !isset( $this->uploadDir ) ) {
 361                         $this->uploadDir = $this->setupUploadDir();
 362                 }
 363
 364                 # Find out values for some special options.
 365                 $lang =
 366                         self::getOptionValue( '/language=([a-z]+(?:_[a-z]+)?)/', $opts, 'en' );
 367                 $variant =
 368                         self::getOptionValue( '/variant=([a-z]+(?:-[a-z]+)?)/', $opts, false );
 369                 $maxtoclevel =
 370                         self::getOptionValue( '/wgMaxTocLevel=(\d+)/', $opts, 999 );
 371
 372                 $settings = array(
 373                         'wgServer' => 'http://localhost',
 374                         'wgScript' => '/index.php',
 375                         'wgScriptPath' => '/',
 376                         'wgArticlePath' => '/wiki/$1',
 377                         'wgActionPaths' => array(),
 378                         'wgLocalFileRepo' => array(
 379                                 'class' => 'LocalRepo',
 380                                 'name' => 'local',
 381                                 'directory' => $this->uploadDir,
 382                                 'url' => 'http://example.com/images',
 383                                 'hashLevels' => 2,
 384                                 'transformVia404' => false,
 385                         ),
 386                         'wgEnableUploads' => true,
 387                         'wgStyleSheetPath' => '/skins',
 388                         'wgSitename' => 'MediaWiki',
 389                         'wgServerName' => 'Britney Spears',
 390                         'wgLanguageCode' => $lang,
 391                         'wgContLanguageCode' => $lang,
 392                         'wgDBprefix' => 'parsertest_',
 393                         'wgRawHtml' => preg_match('/\\brawhtml\\b/i', $opts),
 394                         'wgLang' => null,
 395                         'wgContLang' => null,
 396                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 397                         'wgMaxTocLevel' => $maxtoclevel,
 398                         'wgCapitalLinks' => true,
 399                         'wgNoFollowLinks' => true,
 400                         'wgThumbnailScriptPath' => false,
 401                         'wgUseTeX' => false,
 402                         'wgLocaltimezone' => 'UTC',
 403                         'wgAllowExternalImages' => true,
 404                         'wgUseTidy' => false,
 405                         'wgDefaultLanguageVariant' => $variant,
 406                         'wgVariantArticlePath' => false,
 407                         'wgGroupPermissions' => array( '*' => array(
 408                                 'createaccount' => true,
 409                                 'read'          => true,
 410                                 'edit'          => true,
 411                                 'createpage'    => true,
 412                                 'createtalk'    => true,
 413                         ) ),
 414                         'wgDefaultExternalStore' => array(),
 415                         );
 416                 $this->savedGlobals = array();
 417                 foreach( $settings as $var => $val ) {
 418                         $this->savedGlobals[$var] = $GLOBALS[$var];
 419                         $GLOBALS[$var] = $val;
 420                 }
 421                 $langObj = Language::factory( $lang );
 422                 $GLOBALS['wgLang'] = $langObj;
 423                 $GLOBALS['wgContLang'] = $langObj;
 424
 425                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 426                 $this->setupDatabase();
 427
 428                 global $wgUser;
 429                 $wgUser = new User();
 430         }
 431
 432         /**
 433          * List of temporary tables to create, without prefix.
 434          * Some of these probably aren't necessary.
 435          */
 436         private function listTables() {
 437                 global $wgDBtype;
 438                 $tables = array('user', 'page', 'page_restrictions',
 439                         'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
 440                         'categorylinks', 'templatelinks', 'externallinks', 'langlinks',
 441                         'site_stats', 'hitcounter',     'ipblocks', 'image', 'oldimage',
 442                         'recentchanges', 'watchlist', 'math', 'interwiki',
 443                         'querycache', 'objectcache', 'job', 'redirect', 'querycachetwo',
 444                         'archive', 'user_groups', 'page_props', 'category'
 445                 );
 446
 447                 if ($wgDBtype === 'mysql')
 448                         array_push( $tables, 'searchindex' );
 449
 450                 // Allow extensions to add to the list of tables to duplicate;
 451                 // may be necessary if they hook into page save or other code
 452                 // which will require them while running tests.
 453                 wfRunHooks( 'ParserTestTables', array( &$tables ) );
 454
 455                 return $tables;
 456         }
 457
 458         /**
 459          * Set up a temporary set of wiki tables to work with for the tests.
 460          * Currently this will only be done once per run, and any changes to
 461          * the db will be visible to later tests in the run.
 462          */
 463         private function setupDatabase() {
 464                 static $setupDB = false;
 465                 global $wgDBprefix;
 466
 467                 # Make sure we don't mess with the live DB
 468                 if (!$setupDB && $wgDBprefix === 'parsertest_') {
 469                         # oh teh horror
 470                         LBFactory::destroy();
 471                         $db = wfGetDB( DB_MASTER );
 472
 473                         $tables = $this->listTables();
 474
 475                         if (!(strcmp($db->getServerVersion(), '4.1') < 0 and stristr($db->getSoftwareLink(), 'MySQL'))) {
 476                                 # Database that supports CREATE TABLE ... LIKE
 477                                 global $wgDBtype;
 478                                 if( $wgDBtype == 'postgres' ) {
 479                                         $def = 'INCLUDING DEFAULTS';
 480                                 } else {
 481                                         $def = '';
 482                                 }
 483                                 foreach ($tables as $tbl) {
 484                                         $newTableName = $db->tableName( $tbl );
 485                                         $tableName = $this->oldTableNames[$tbl];
 486                                         $db->query("CREATE TEMPORARY TABLE $newTableName (LIKE $tableName $def)");
 487                                 }
 488                         } else {
 489                                 # Hack for MySQL versions < 4.1, which don't support
 490                                 # "CREATE TABLE ... LIKE". Note that
 491                                 # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 492                                 # would not create the indexes we need....
 493                                 foreach ($tables as $tbl) {
 494                                         $res = $db->query("SHOW CREATE TABLE {$this->oldTableNames[$tbl]}");
 495                                         $row = $db->fetchRow($res);
 496                                         $create = $row[1];
 497                                         $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/', 'CREATE TEMPORARY TABLE `'
 498                                                 . $wgDBprefix . $tbl .'`', $create);
 499                                         if ($create === $create_tmp) {
 500                                                 # Couldn't do replacement
 501                                                 wfDie("could not create temporary table $tbl");
 502                                         }
 503                                         $db->query($create_tmp);
 504                                 }
 505
 506                         }
 507
 508                         # Hack: insert a few Wikipedia in-project interwiki prefixes,
 509                         # for testing inter-language links
 510                         $db->insert( 'interwiki', array(
 511                                 array( 'iw_prefix' => 'Wikipedia',
 512                                        'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 513                                        'iw_local'  => 0 ),
 514                                 array( 'iw_prefix' => 'MeatBall',
 515                                        'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 516                                        'iw_local'  => 0 ),
 517                                 array( 'iw_prefix' => 'zh',
 518                                        'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 519                                        'iw_local'  => 1 ),
 520                                 array( 'iw_prefix' => 'es',
 521                                        'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 522                                        'iw_local'  => 1 ),
 523                                 array( 'iw_prefix' => 'fr',
 524                                        'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 525                                        'iw_local'  => 1 ),
 526                                 array( 'iw_prefix' => 'ru',
 527                                        'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 528                                        'iw_local'  => 1 ),
 529                                 ) );
 530
 531                         # Hack: Insert an image to work with
 532                         $db->insert( 'image', array(
 533                                 'img_name'        => 'Foobar.jpg',
 534                                 'img_size'        => 12345,
 535                                 'img_description' => 'Some lame file',
 536                                 'img_user'        => 1,
 537                                 'img_user_text'   => 'WikiSysop',
 538                                 'img_timestamp'   => $db->timestamp( '20010115123500' ),
 539                                 'img_width'       => 1941,
 540                                 'img_height'      => 220,
 541                                 'img_bits'        => 24,
 542                                 'img_media_type'  => MEDIATYPE_BITMAP,
 543                                 'img_major_mime'  => "image",
 544                                 'img_minor_mime'  => "jpeg",
 545                                 'img_metadata'    => serialize( array() ),
 546                                 ) );
 547
 548                         # Update certain things in site_stats
 549                         $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 550
 551                         $setupDB = true;
 552                 }
 553         }
 554
 555         /**
 556          * Create a dummy uploads directory which will contain a couple
 557          * of files in order to pass existence tests.
 558          * @return string The directory
 559          */
 560         private function setupUploadDir() {
 561                 global $IP;
 562                 if ( $this->keepUploads ) {
 563                         $dir = wfTempDir() . '/mwParser-images';
 564                         if ( is_dir( $dir ) ) {
 565                                 return $dir;
 566                         }
 567                 } else {
 568                         $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 569                 }
 570
 571                 wfDebug( "Creating upload directory $dir\n" );
 572                 mkdir( $dir );
 573                 mkdir( $dir . '/3' );
 574                 mkdir( $dir . '/3/3a' );
 575                 copy( "$IP/skins/monobook/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
 576                 return $dir;
 577         }
 578
 579         /**
 580          * Restore default values and perform any necessary clean-up
 581          * after each test runs.
 582          */
 583         private function teardownGlobals() {
 584                 RepoGroup::destroySingleton();
 585                 foreach( $this->savedGlobals as $var => $val ) {
 586                         $GLOBALS[$var] = $val;
 587                 }
 588                 if( isset( $this->uploadDir ) ) {
 589                         $this->teardownUploadDir( $this->uploadDir );
 590                         unset( $this->uploadDir );
 591                 }
 592         }
 593
 594         /**
 595          * Remove the dummy uploads directory
 596          */
 597         private function teardownUploadDir( $dir ) {
 598                 if ( $this->keepUploads ) {
 599                         return;
 600                 }
 601
 602                 // delete the files first, then the dirs.
 603                 self::deleteFiles(
 604                         array (
 605                                 "$dir/3/3a/Foobar.jpg",
 606                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
 607                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
 608                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
 609                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
 610                         )
 611                 );
 612
 613                 self::deleteDirs(
 614                         array (
 615                                 "$dir/3/3a",
 616                                 "$dir/3",
 617                                 "$dir/thumb/6/65",
 618                                 "$dir/thumb/6",
 619                                 "$dir/thumb/3/3a/Foobar.jpg",
 620                                 "$dir/thumb/3/3a",
 621                                 "$dir/thumb/3",
 622                                 "$dir/thumb",
 623                                 "$dir",
 624                         )
 625                 );
 626         }
 627
 628         /**
 629          * Delete the specified files, if they exist.
 630          * @param array $files full paths to files to delete.
 631          */
 632         private static function deleteFiles( $files ) {
 633                 foreach( $files as $file ) {
 634                         if( file_exists( $file ) ) {
 635                                 unlink( $file );
 636                         }
 637                 }
 638         }
 639
 640         /**
 641          * Delete the specified directories, if they exist. Must be empty.
 642          * @param array $dirs full paths to directories to delete.
 643          */
 644         private static function deleteDirs( $dirs ) {
 645                 foreach( $dirs as $dir ) {
 646                         if( is_dir( $dir ) ) {
 647                                 rmdir( $dir );
 648                         }
 649                 }
 650         }
 651
 652         /**
 653          * "Running test $desc..."
 654          */
 655         protected function showTesting( $desc ) {
 656                 print "Running test $desc... ";
 657         }
 658
 659         /**
 660          * Print a happy success message.
 661          *
 662          * @param string $desc The test name
 663          * @return bool
 664          */
 665         protected function showSuccess( $desc ) {
 666                 if( $this->showProgress ) {
 667                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
 668                 }
 669                 return true;
 670         }
 671
 672         /**
 673          * Print a failure message and provide some explanatory output
 674          * about what went wrong if so configured.
 675          *
 676          * @param string $desc The test name
 677          * @param string $result Expected HTML output
 678          * @param string $html Actual HTML output
 679          * @return bool
 680          */
 681         protected function showFailure( $desc, $result, $html ) {
 682                 if( $this->showFailure ) {
 683                         if( !$this->showProgress ) {
 684                                 # In quiet mode we didn't show the 'Testing' message before the
 685                                 # test, in case it succeeded. Show it now:
 686                                 $this->showTesting( $desc );
 687                         }
 688                         print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
 689                         if ( $this->showOutput ) {
 690                                 print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
 691                         }
 692                         if( $this->showDiffs ) {
 693                                 print $this->quickDiff( $result, $html );
 694                                 if( !$this->wellFormed( $html ) ) {
 695                                         print "XML error: $this->mXmlError\n";
 696                                 }
 697                         }
 698                 }
 699                 return false;
 700         }
 701
 702         /**
 703          * Run given strings through a diff and return the (colorized) output.
 704          * Requires writable /tmp directory and a 'diff' command in the PATH.
 705          *
 706          * @param string $input
 707          * @param string $output
 708          * @param string $inFileTail Tailing for the input file name
 709          * @param string $outFileTail Tailing for the output file name
 710          * @return string
 711          */
 712         protected function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
 713                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
 714
 715                 $infile = "$prefix-$inFileTail";
 716                 $this->dumpToFile( $input, $infile );
 717
 718                 $outfile = "$prefix-$outFileTail";
 719                 $this->dumpToFile( $output, $outfile );
 720
 721                 $diff = `diff -au $infile $outfile`;
 722                 unlink( $infile );
 723                 unlink( $outfile );
 724
 725                 return $this->colorDiff( $diff );
 726         }
 727
 728         /**
 729          * Write the given string to a file, adding a final newline.
 730          *
 731          * @param string $data
 732          * @param string $filename
 733          */
 734         private function dumpToFile( $data, $filename ) {
 735                 $file = fopen( $filename, "wt" );
 736                 fwrite( $file, $data . "\n" );
 737                 fclose( $file );
 738         }
 739
 740         /**
 741          * Colorize unified diff output if set for ANSI color output.
 742          * Subtractions are colored blue, additions red.
 743          *
 744          * @param string $text
 745          * @return string
 746          */
 747         protected function colorDiff( $text ) {
 748                 return preg_replace(
 749                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 750                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
 751                                $this->term->color( 31 ) . '$1' . $this->term->reset() ),
 752                         $text );
 753         }
 754
 755         /**
 756          * Show "Reading tests from ..."
 757          *
 758          * @param String $path
 759          */
 760         protected function showRunFile( $path ){
 761                 print $this->term->color( 1 ) .
 762                         "Reading tests from \"$path\"..." .
 763                         $this->term->reset() .
 764                         "\n";
 765         }
 766
 767         /**
 768          * Insert a temporary test article
 769          * @param string $name the title, including any prefix
 770          * @param string $text the article text
 771          * @param int $line the input line number, for reporting errors
 772          */
 773         private function addArticle($name, $text, $line) {
 774                 $this->setupGlobals();
 775                 $title = Title::newFromText( $name );
 776                 if ( is_null($title) ) {
 777                         wfDie( "invalid title at line $line\n" );
 778                 }
 779
 780                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
 781                 if ($aid != 0) {
 782                         wfDie( "duplicate article at line $line\n" );
 783                 }
 784
 785                 $art = new Article($title);
 786                 $art->insertNewArticle($text, '', false, false );
 787                 $this->teardownGlobals();
 788         }
 789
 790         /**
 791          * Steal a callback function from the primary parser, save it for
 792          * application to our scary parser. If the hook is not installed,
 793          * die a painful dead to warn the others.
 794          * @param string $name
 795          */
 796         private function requireHook( $name ) {
 797                 global $wgParser;
 798                 if( isset( $wgParser->mTagHooks[$name] ) ) {
 799                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
 800                 } else {
 801                         wfDie( "This test suite requires the '$name' hook extension.\n" );
 802                 }
 803         }
 804
 805         /**
 806          * Steal a callback function from the primary parser, save it for
 807          * application to our scary parser. If the hook is not installed,
 808          * die a painful dead to warn the others.
 809          * @param string $name
 810          */
 811         private function requireFunctionHook( $name ) {
 812                 global $wgParser;
 813                 if( isset( $wgParser->mFunctionHooks[$name] ) ) {
 814                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
 815                 } else {
 816                         wfDie( "This test suite requires the '$name' function hook extension.\n" );
 817                 }
 818         }
 819
 820         /*
 821          * Run the "tidy" command on text if the $wgUseTidy
 822          * global is true
 823          *
 824          * @param string $text the text to tidy
 825          * @return string
 826          * @static
 827          */
 828         private function tidy( $text ) {
 829                 global $wgUseTidy;
 830                 if ($wgUseTidy) {
 831                         $text = Parser::tidy($text);
 832                 }
 833                 return $text;
 834         }
 835
 836         private function wellFormed( $text ) {
 837                 $html =
 838                         Sanitizer::hackDocType() .
 839                         '<html>' .
 840                         $text .
 841                         '</html>';
 842
 843                 $parser = xml_parser_create( "UTF-8" );
 844
 845                 # case folding violates XML standard, turn it off
 846                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 847
 848                 if( !xml_parse( $parser, $html, true ) ) {
 849                         $err = xml_error_string( xml_get_error_code( $parser ) );
 850                         $position = xml_get_current_byte_index( $parser );
 851                         $fragment = $this->extractFragment( $html, $position );
 852                         $this->mXmlError = "$err at byte $position:\n$fragment";
 853                         xml_parser_free( $parser );
 854                         return false;
 855                 }
 856                 xml_parser_free( $parser );
 857                 return true;
 858         }
 859
 860         private function extractFragment( $text, $position ) {
 861                 $start = max( 0, $position - 10 );
 862                 $before = $position - $start;
 863                 $fragment = '...' .
 864                         $this->term->color( 34 ) .
 865                         substr( $text, $start, $before ) .
 866                         $this->term->color( 0 ) .
 867                         $this->term->color( 31 ) .
 868                         $this->term->color( 1 ) .
 869                         substr( $text, $position, 1 ) .
 870                         $this->term->color( 0 ) .
 871                         $this->term->color( 34 ) .
 872                         substr( $text, $position + 1, 9 ) .
 873                         $this->term->color( 0 ) .
 874                         '...';
 875                 $display = str_replace( "\n", ' ', $fragment );
 876                 $caret = '   ' .
 877                         str_repeat( ' ', $before ) .
 878                         $this->term->color( 31 ) .
 879                         '^' .
 880                         $this->term->color( 0 );
 881                 return "$display\n$caret";
 882         }
 883 }
 884
 885 class AnsiTermColorer {
 886         function __construct() {
 887         }
 888
 889         /**
 890          * Return ANSI terminal escape code for changing text attribs/color
 891          *
 892          * @param string $color Semicolon-separated list of attribute/color codes
 893          * @return string
 894          */
 895         public function color( $color ) {
 896                 global $wgCommandLineDarkBg;
 897                 $light = $wgCommandLineDarkBg ? "1;" : "0;";
 898                 return "\x1b[{$light}{$color}m";
 899         }
 900
 901         /**
 902          * Return ANSI terminal escape code for restoring default text attributes
 903          *
 904          * @return string
 905          */
 906         public function reset() {
 907                 return $this->color( 0 );
 908         }
 909 }
 910
 911 /* A colour-less terminal */
 912 class DummyTermColorer {
 913         public function color( $color ) {
 914                 return '';
 915         }
 916
 917         public function reset() {
 918                 return '';
 919         }
 920 }
 921
 922 class TestRecorder {
 923         function __construct( $term ) {
 924                 $this->term = $term;
 925         }
 926
 927         function start() {
 928                 $this->total = 0;
 929                 $this->success = 0;
 930         }
 931
 932         function record( $test, $result ) {
 933                 $this->total++;
 934                 $this->success += ($result ? 1 : 0);
 935         }
 936
 937         function end() {
 938                 // dummy
 939         }
 940
 941         function report() {
 942                 if( $this->total > 0 ) {
 943                         $this->reportPercentage( $this->success, $this->total );
 944                 } else {
 945                         wfDie( "No tests found.\n" );
 946                 }
 947         }
 948
 949         function reportPercentage( $success, $total ) {
 950                 $ratio = wfPercent( 100 * $success / $total );
 951                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
 952                 if( $success == $total ) {
 953                         print $this->term->color( 32 ) . "ALL TESTS PASSED!";
 954                 } else {
 955                         $failed = $total - $success ;
 956                         print $this->term->color( 31 ) . "$failed tests failed!";
 957                 }
 958                 print $this->term->reset() . "\n";
 959                 return ($success == $total);
 960         }
 961 }
 962
 963 class DbTestRecorder extends TestRecorder  {
 964         protected $db;      ///< Database connection to the main DB
 965         protected $curRun;  ///< run ID number for the current run
 966         protected $prevRun; ///< run ID number for the previous run, if any
 967
 968         function __construct( $term ) {
 969                 parent::__construct( $term );
 970                 $this->db = wfGetDB( DB_MASTER );
 971         }
 972
 973         /**
 974          * Set up result recording; insert a record for the run with the date
 975          * and all that fun stuff
 976          */
 977         function start() {
 978                 global $wgDBtype;
 979                 parent::start();
 980
 981                 $this->db->begin();
 982
 983                 if( ! $this->db->tableExists( 'testrun' ) or ! $this->db->tableExists( 'testitem') ) {
 984                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
 985             if ($wgDBtype === 'postgres')
 986                                 dbsource( dirname(__FILE__) . '/testRunner.postgres.sql',  $this->db );
 987                         else
 988                                 dbsource( dirname(__FILE__) . '/testRunner.sql',  $this->db );
 989                         echo "OK, resuming.\n";
 990                 }
 991
 992                 // We'll make comparisons against the previous run later...
 993                 $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
 994
 995                 $this->db->insert( 'testrun',
 996                         array(
 997                                 'tr_date'        => $this->db->timestamp(),
 998                                 'tr_mw_version'  => SpecialVersion::getVersion(),
 999                                 'tr_php_version' => phpversion(),
1000                                 'tr_db_version'  => $this->db->getServerVersion(),
1001                                 'tr_uname'       => php_uname()
1002                         ),
1003                         __METHOD__ );
1004                         if ($wgDBtype === 'postgres')
1005                                 $this->curRun = $this->db->currentSequenceValue('testrun_id_seq');
1006                         else
1007                                 $this->curRun = $this->db->insertId();
1008         }
1009
1010         /**
1011          * Record an individual test item's success or failure to the db
1012          * @param string $test
1013          * @param bool $result
1014          */
1015         function record( $test, $result ) {
1016                 parent::record( $test, $result );
1017                 $this->db->insert( 'testitem',
1018                         array(
1019                                 'ti_run'     => $this->curRun,
1020                                 'ti_name'    => $test,
1021                                 'ti_success' => $result ? 1 : 0,
1022                         ),
1023                         __METHOD__ );
1024         }
1025
1026         /**
1027          * Commit transaction and clean up for result recording
1028          */
1029         function end() {
1030                 $this->db->commit();
1031                 parent::end();
1032         }
1033
1034         function report() {
1035                 if( $this->prevRun ) {
1036                         $table = array(
1037                                 array( 'previously failing test(s) now PASSING! :)', 0, 1 ),
1038                                 array( 'previously PASSING test(s) removed o_O', 1, null ),
1039                                 array( 'new PASSING test(s) :)', null, 1 ),
1040
1041                                 array( 'previously passing test(s) now FAILING! :(', 1, 0 ),
1042                                 array( 'previously FAILING test(s) removed O_o', 0, null ),
1043                                 array( 'new FAILING test(s) :(', null, 0 ),
1044                                 array( 'still FAILING test(s) :(', 0, 0 ),
1045                         );
1046                         foreach( $table as $criteria ) {
1047                                 list( $label, $before, $after ) = $criteria;
1048                                 $differences = $this->compareResult( $before, $after );
1049                                 if( $differences ) {
1050                                         $count = count($differences);
1051                                         printf( "\n%4d %s\n", $count, $label );
1052                                         foreach ($differences as $differing_test_name => $statusInfo) {
1053                                                 print "      * $differing_test_name  [$statusInfo]\n";
1054                                         }
1055                                 }
1056                         }
1057                 } else {
1058                         print "No previous test runs to compare against.\n";
1059                 }
1060                 print "\n";
1061                 parent::report();
1062         }
1063
1064         /**
1065          ** Returns an array of the test names with changed results, based on the specified
1066          ** before/after criteria.
1067          */
1068         private function compareResult( $before, $after ) {
1069                 $testitem = $this->db->tableName( 'testitem' );
1070                 $prevRun = intval( $this->prevRun );
1071                 $curRun = intval( $this->curRun );
1072                 $prevStatus = $this->condition( $before );
1073                 $curStatus = $this->condition( $after );
1074
1075                 // note: requires mysql >= ver 4.1 for subselects
1076                 if( is_null( $after ) ) {
1077                         $sql = "
1078                                 select prev.ti_name as t from $testitem as prev
1079                                         where prev.ti_run=$prevRun and
1080                                                 prev.ti_success $prevStatus and
1081                                                 (select current.ti_success from $testitem as current
1082                                                         where current.ti_run=$curRun
1083                                                                 and prev.ti_name=current.ti_name) $curStatus";
1084                 } else {
1085                         $sql = "
1086                                 select current.ti_name as t from $testitem as current
1087                                         where current.ti_run=$curRun and
1088                                                 current.ti_success $curStatus and
1089                                                 (select prev.ti_success from $testitem as prev
1090                                                         where prev.ti_run=$prevRun
1091                                                                 and prev.ti_name=current.ti_name) $prevStatus";
1092                 }
1093                 $result = $this->db->query( $sql, __METHOD__ );
1094                 $retval = array();
1095                 while ($row = $this->db->fetchObject( $result )) {
1096                         $testname = $row->t;
1097                         $retval[$testname] = $this->getTestStatusInfo( $testname, $after, $curRun );
1098                 }
1099                 $this->db->freeResult( $result );
1100                 return $retval;
1101         }
1102
1103         /**
1104          ** Returns a string giving information about when a test last had a status change.
1105          ** Could help to track down when regressions were introduced, as distinct from tests
1106          ** which have never passed (which are more change requests than regressions).
1107          */
1108         private function getTestStatusInfo($testname, $after, $curRun) {
1109
1110                 // If we're looking at a test that has just been removed, then say when it first appeared.
1111                 if ( is_null( $after ) ) {
1112                         $changedRun = $this->db->selectField ( 'testitem',
1113                                                                                                    'MIN(ti_run)',
1114                                                                                                    array( 'ti_name' => $testname ),
1115                                                                                                    __METHOD__ );
1116                         $appear = $this->db->selectRow ( 'testrun',
1117                                                                                          array( 'tr_date', 'tr_mw_version' ),
1118                                                                                          array( 'tr_id' => $changedRun ),
1119                                                                                          __METHOD__ );
1120                         return "First recorded appearance: "
1121                                . date( "d-M-Y H:i:s",  strtotime ( $appear->tr_date ) )
1122                                .  ", " . $appear->tr_mw_version;
1123                 }
1124
1125                 // Otherwise, this test has previous recorded results.
1126                 // See when this test last had a different result to what we're seeing now.
1127                 $changedRun = $this->db->selectField ( 'testitem',
1128                                                                                            'MAX(ti_run)',
1129                                                                                            array(
1130                                                                                                'ti_name'    => $testname,
1131                                                                                                'ti_success' => ($after ? "0" : "1"),
1132                                                                                                "ti_run != " . $this->db->addQuotes ( $curRun )
1133                                                                                                 ),
1134                                                                                                 __METHOD__ );
1135
1136                 // If no record of ever having had a different result.
1137                 if ( is_null ( $changedRun ) ) {
1138                         if ($after == "0") {
1139                                 return "Has never passed";
1140                         } else {
1141                                 return "Has never failed";
1142                         }
1143                 }
1144
1145                 // Otherwise, we're looking at a test whose status has changed.
1146                 // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
1147                 // In this situation, give as much info as we can as to when it changed status.
1148                 $pre  = $this->db->selectRow ( 'testrun',
1149                                                                                 array( 'tr_date', 'tr_mw_version' ),
1150                                                                                 array( 'tr_id' => $changedRun ),
1151                                                                                 __METHOD__ );
1152                 $post = $this->db->selectRow ( 'testrun',
1153                                                                                 array( 'tr_date', 'tr_mw_version' ),
1154                                                                                 array( "tr_id > " . $this->db->addQuotes ( $changedRun) ),
1155                                                                                 __METHOD__,
1156                                                                                 array( "LIMIT" => 1, "ORDER BY" => 'tr_id' )
1157                                                                          );
1158
1159                 return ( $after == "0" ? "Introduced" : "Fixed" ) . " between "
1160                                 . date( "d-M-Y H:i:s",  strtotime ( $pre->tr_date ) ) .  ", " . $pre->tr_mw_version
1161                                 . " and "
1162                                 . date( "d-M-Y H:i:s",  strtotime ( $post->tr_date  ) ) .  ", " . $post->tr_mw_version ;
1163         }
1164
1165         /**
1166          ** Helper function for compareResult() database querying.
1167          */
1168         private function condition( $value ) {
1169                 if( is_null( $value ) ) {
1170                         return 'IS NULL';
1171                 } else {
1172                         return '=' . intval( $value );
1173                 }
1174         }
1175
1176 }
1177
1178 class DbTestPreviewer extends DbTestRecorder  {
1179         /**
1180          * Commit transaction and clean up for result recording
1181          */
1182         function end() {
1183                 $this->db->rollback();
1184                 TestRecorder::end();
1185         }
1186 }