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  * @addtogroup Maintenance
  24  */
  25
  26 /** */
  27 $options = array( 'quick', 'color', 'quiet', 'help', 'show-output', 'record' );
  28 $optionsWithArgs = array( 'regex' );
  29
  30 require_once( 'commandLine.inc' );
  31 require_once( "$IP/maintenance/parserTestsParserHook.php" );
  32 require_once( "$IP/maintenance/parserTestsStaticParserHook.php" );
  33 require_once( "$IP/maintenance/parserTestsParserTime.php" );
  34
  35 /**
  36  * @addtogroup Maintenance
  37  */
  38 class ParserTest {
  39         /**
  40          * boolean $color whereas output should be colorized
  41          */
  42         private $color;
  43
  44         /**
  45          * boolean $showOutput Show test output
  46          */
  47         private $showOutput;
  48
  49         /**
  50          * Sets terminal colorization and diff/quick modes depending on OS and
  51          * command-line options (--color and --quick).
  52          */
  53         public function ParserTest() {
  54                 global $options;
  55
  56                 # Only colorize output if stdout is a terminal.
  57                 $this->color = !wfIsWindows() && posix_isatty(1);
  58
  59                 if( isset( $options['color'] ) ) {
  60                         switch( $options['color'] ) {
  61                         case 'no':
  62                                 $this->color = false;
  63                                 break;
  64                         case 'yes':
  65                         default:
  66                                 $this->color = true;
  67                                 break;
  68                         }
  69                 }
  70                 $this->term = $this->color
  71                         ? new AnsiTermColorer()
  72                         : new DummyTermColorer();
  73
  74                 $this->showDiffs = !isset( $options['quick'] );
  75                 $this->showProgress = !isset( $options['quiet'] );
  76                 $this->showFailure = !(
  77                         isset( $options['quiet'] )
  78                         && ( isset( $options['record'] )
  79                                 || isset( $options['compare'] ) ) ); // redundant output
  80
  81                 $this->showOutput = isset( $options['show-output'] );
  82
  83
  84                 if (isset($options['regex'])) {
  85                         $this->regex = $options['regex'];
  86                 } else {
  87                         # Matches anything
  88                         $this->regex = '';
  89                 }
  90
  91                 if( isset( $options['record'] ) ) {
  92                         $this->recorder = new DbTestRecorder( $this->term );
  93                 } elseif( isset( $options['compare'] ) ) {
  94                         $this->recorder = new DbTestPreviewer( $this->term );
  95                 } else {
  96                         $this->recorder = new TestRecorder( $this->term );
  97                 }
  98
  99                 $this->hooks = array();
 100                 $this->functionHooks = array();
 101         }
 102
 103         /**
 104          * Remove last character if it is a newline
 105          */
 106         private function chomp($s) {
 107                 if (substr($s, -1) === "\n") {
 108                         return substr($s, 0, -1);
 109                 }
 110                 else {
 111                         return $s;
 112                 }
 113         }
 114
 115         /**
 116          * Run a series of tests listed in the given text files.
 117          * Each test consists of a brief description, wikitext input,
 118          * and the expected HTML output.
 119          *
 120          * Prints status updates on stdout and counts up the total
 121          * number and percentage of passed tests.
 122          *
 123          * @param array of strings $filenames
 124          * @return bool True if passed all tests, false if any tests failed.
 125          */
 126         public function runTestsFromFiles( $filenames ) {
 127                 $this->recorder->start();
 128                 $ok = true;
 129                 foreach( $filenames as $filename ) {
 130                         $ok = $this->runFile( $filename ) && $ok;
 131                 }
 132                 $this->recorder->report();
 133                 $this->recorder->end();
 134                 return $ok;
 135         }
 136
 137         private function runFile( $filename ) {
 138                 $infile = fopen( $filename, 'rt' );
 139                 if( !$infile ) {
 140                         wfDie( "Couldn't open $filename\n" );
 141                 } else {
 142                         global $IP;
 143                         $relative = wfRelativePath( $filename, $IP );
 144                         print $this->term->color( 1 ) .
 145                                 "Reading tests from \"$relative\"..." .
 146                                 $this->term->reset() .
 147                                 "\n";
 148                 }
 149
 150                 $data = array();
 151                 $section = null;
 152                 $n = 0;
 153                 $ok = true;
 154                 while( false !== ($line = fgets( $infile ) ) ) {
 155                         $n++;
 156                         $matches = array();
 157                         if( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
 158                                 $section = strtolower( $matches[1] );
 159                                 if( $section == 'endarticle') {
 160                                         if( !isset( $data['text'] ) ) {
 161                                                 wfDie( "'endarticle' without 'text' at line $n of $filename\n" );
 162                                         }
 163                                         if( !isset( $data['article'] ) ) {
 164                                                 wfDie( "'endarticle' without 'article' at line $n of $filename\n" );
 165                                         }
 166                                         $this->addArticle($this->chomp($data['article']), $this->chomp($data['text']), $n);
 167                                         $data = array();
 168                                         $section = null;
 169                                         continue;
 170                                 }
 171                                 if( $section == 'endhooks' ) {
 172                                         if( !isset( $data['hooks'] ) ) {
 173                                                 wfDie( "'endhooks' without 'hooks' at line $n of $filename\n" );
 174                                         }
 175                                         foreach( explode( "\n", $data['hooks'] ) as $line ) {
 176                                                 $line = trim( $line );
 177                                                 if( $line ) {
 178                                                         $this->requireHook( $line );
 179                                                 }
 180                                         }
 181                                         $data = array();
 182                                         $section = null;
 183                                         continue;
 184                                 }
 185                                 if( $section == 'endfunctionhooks' ) {
 186                                         if( !isset( $data['functionhooks'] ) ) {
 187                                                 wfDie( "'endfunctionhooks' without 'functionhooks' at line $n of $filename\n" );
 188                                         }
 189                                         foreach( explode( "\n", $data['functionhooks'] ) as $line ) {
 190                                                 $line = trim( $line );
 191                                                 if( $line ) {
 192                                                         $this->requireFunctionHook( $line );
 193                                                 }
 194                                         }
 195                                         $data = array();
 196                                         $section = null;
 197                                         continue;
 198                                 }
 199                                 if( $section == 'end' ) {
 200                                         if( !isset( $data['test'] ) ) {
 201                                                 wfDie( "'end' without 'test' at line $n of $filename\n" );
 202                                         }
 203                                         if( !isset( $data['input'] ) ) {
 204                                                 wfDie( "'end' without 'input' at line $n of $filename\n" );
 205                                         }
 206                                         if( !isset( $data['result'] ) ) {
 207                                                 wfDie( "'end' without 'result' at line $n of $filename\n" );
 208                                         }
 209                                         if( !isset( $data['options'] ) ) {
 210                                                 $data['options'] = '';
 211                                         }
 212                                         else {
 213                                                 $data['options'] = $this->chomp( $data['options'] );
 214                                         }
 215                                         if (preg_match('/\\bdisabled\\b/i', $data['options'])
 216                                                 || !preg_match("/{$this->regex}/i", $data['test'])) {
 217                                                 # disabled test
 218                                                 $data = array();
 219                                                 $section = null;
 220                                                 continue;
 221                                         }
 222                                         $result = $this->runTest(
 223                                                 $this->chomp( $data['test'] ),
 224                                                 $this->chomp( $data['input'] ),
 225                                                 $this->chomp( $data['result'] ),
 226                                                 $this->chomp( $data['options'] ) );
 227                                         $ok = $ok && $result;
 228                                         $this->recorder->record( $this->chomp( $data['test'] ), $result );
 229                                         $data = array();
 230                                         $section = null;
 231                                         continue;
 232                                 }
 233                                 if ( isset ($data[$section] ) ) {
 234                                         wfDie( "duplicate section '$section' at line $n of $filename\n" );
 235                                 }
 236                                 $data[$section] = '';
 237                                 continue;
 238                         }
 239                         if( $section ) {
 240                                 $data[$section] .= $line;
 241                         }
 242                 }
 243                 if ( $this->showProgress ) {
 244                         print "\n";
 245                 }
 246                 return $ok;
 247         }
 248
 249         /**
 250          * Run a given wikitext input through a freshly-constructed wiki parser,
 251          * and compare the output against the expected results.
 252          * Prints status and explanatory messages to stdout.
 253          *
 254          * @param string $input Wikitext to try rendering
 255          * @param string $result Result to output
 256          * @return bool
 257          */
 258         private function runTest( $desc, $input, $result, $opts ) {
 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                 $parser = new Parser();
 284                 foreach( $this->hooks as $tag => $callback ) {
 285                         $parser->setHook( $tag, $callback );
 286                 }
 287                 foreach( $this->functionHooks as $tag => $bits ) {
 288                         list( $callback, $flags ) = $bits;
 289                         $parser->setFunctionHook( $tag, $callback, $flags );
 290                 }
 291                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 292
 293                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 294
 295                 $matches = array();
 296                 if (preg_match('/\\bpst\\b/i', $opts)) {
 297                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 298                 } elseif (preg_match('/\\bmsg\\b/i', $opts)) {
 299                         $out = $parser->transformMsg( $input, $options );
 300                 } elseif( preg_match( '/\\bsection=(\d+)\b/i', $opts, $matches ) ) {
 301                         $section = intval( $matches[1] );
 302                         $out = $parser->getSection( $input, $section );
 303                 } elseif( preg_match( '/\\breplace=(\d+),"(.*?)"/i', $opts, $matches ) ) {
 304                         $section = intval( $matches[1] );
 305                         $replace = $matches[2];
 306                         $out = $parser->replaceSection( $input, $section, $replace );
 307                 } else {
 308                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 309                         $out = $output->getText();
 310
 311                         if (preg_match('/\\bill\\b/i', $opts)) {
 312                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 313                         } else if (preg_match('/\\bcat\\b/i', $opts)) {
 314                                 global $wgOut;
 315                                 $wgOut->addCategoryLinks($output->getCategories());
 316                                 $out = $this->tidy ( implode( ' ', $wgOut->getCategoryLinks() ) );
 317                         }
 318
 319                         $result = $this->tidy($result);
 320                 }
 321
 322                 $this->teardownGlobals();
 323
 324                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 325                         return $this->showSuccess( $desc );
 326                 } else {
 327                         return $this->showFailure( $desc, $result, $out );
 328                 }
 329         }
 330
 331
 332         /**
 333          * Use a regex to find out the value of an option
 334          * @param $regex A regex, the first group will be the value returned
 335          * @param $opts Options line to look in
 336          * @param $defaults Default value returned if the regex does not match
 337          */
 338         private static function getOptionValue( $regex, $opts, $default ) {
 339                 $m = array();
 340                 if( preg_match( $regex, $opts, $m ) ) {
 341                         return $m[1];
 342                 } else {
 343                         return $default;
 344                 }
 345         }
 346
 347         /**
 348          * Set up the global variables for a consistent environment for each test.
 349          * Ideally this should replace the global configuration entirely.
 350          */
 351         private function setupGlobals($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                 # Find out values for some special options.
 363                 $lang =
 364                         self::getOptionValue( '/language=([a-z]+(?:_[a-z]+)?)/', $opts, 'en' );
 365                 $variant =
 366                         self::getOptionValue( '/variant=([a-z]+(?:-[a-z]+)?)/', $opts, false );
 367                 $maxtoclevel =
 368                         self::getOptionValue( '/wgMaxTocLevel=(\d+)/', $opts, 999 );
 369
 370                 $settings = array(
 371                         'wgServer' => 'http://localhost',
 372                         'wgScript' => '/index.php',
 373                         'wgScriptPath' => '/',
 374                         'wgArticlePath' => '/wiki/$1',
 375                         'wgActionPaths' => array(),
 376                         'wgLocalFileRepo' => array(
 377                                 'class' => 'LocalRepo',
 378                                 'name' => 'local',
 379                                 'directory' => $this->uploadDir,
 380                                 'url' => 'http://example.com/images',
 381                                 'hashLevels' => 2,
 382                                 'transformVia404' => false,
 383                         ),
 384                         'wgEnableUploads' => true,
 385                         'wgStyleSheetPath' => '/skins',
 386                         'wgSitename' => 'MediaWiki',
 387                         'wgServerName' => 'Britney Spears',
 388                         'wgLanguageCode' => $lang,
 389                         'wgContLanguageCode' => $lang,
 390                         'wgDBprefix' => 'parsertest_',
 391                         'wgRawHtml' => preg_match('/\\brawhtml\\b/i', $opts),
 392                         'wgLang' => null,
 393                         'wgContLang' => null,
 394                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 395                         'wgMaxTocLevel' => $maxtoclevel,
 396                         'wgCapitalLinks' => true,
 397                         'wgNoFollowLinks' => true,
 398                         'wgThumbnailScriptPath' => false,
 399                         'wgUseTeX' => false,
 400                         'wgLocaltimezone' => 'UTC',
 401                         'wgAllowExternalImages' => true,
 402                         'wgUseTidy' => false,
 403                         'wgDefaultLanguageVariant' => $variant,
 404                         'wgVariantArticlePath' => false,
 405                         );
 406                 $this->savedGlobals = array();
 407                 foreach( $settings as $var => $val ) {
 408                         $this->savedGlobals[$var] = $GLOBALS[$var];
 409                         $GLOBALS[$var] = $val;
 410                 }
 411                 $langObj = Language::factory( $lang );
 412                 $GLOBALS['wgLang'] = $langObj;
 413                 $GLOBALS['wgContLang'] = $langObj;
 414
 415                 $GLOBALS['wgLoadBalancer']->loadMasterPos();
 416                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 417                 $this->setupDatabase();
 418
 419                 global $wgUser;
 420                 $wgUser = new User();
 421         }
 422
 423         /**
 424          * List of temporary tables to create, without prefix.
 425          * Some of these probably aren't necessary.
 426          */
 427         private function listTables() {
 428                 global $wgDBtype;
 429                 $tables = array('user', 'page', 'page_restrictions',
 430                         'protected_titles', 'revision', 'text', 'pagelinks', 'imagelinks',
 431                         'categorylinks', 'templatelinks', 'externallinks', 'langlinks',
 432                         'site_stats', 'hitcounter',     'ipblocks', 'image', 'oldimage',
 433                         'recentchanges', 'watchlist', 'math', 'interwiki',
 434                         'querycache', 'objectcache', 'job', 'redirect', 'querycachetwo',
 435                         'archive', 'user_groups'
 436                 );
 437
 438                 if ($wgDBtype === 'mysql')
 439                         array_push( $tables, 'searchindex' );
 440
 441                 // Allow extensions to add to the list of tables to duplicate;
 442                 // may be necessary if they hook into page save or other code
 443                 // which will require them while running tests.
 444                 wfRunHooks( 'ParserTestTables', array( &$tables ) );
 445
 446                 return $tables;
 447         }
 448
 449         /**
 450          * Set up a temporary set of wiki tables to work with for the tests.
 451          * Currently this will only be done once per run, and any changes to
 452          * the db will be visible to later tests in the run.
 453          */
 454         private function setupDatabase() {
 455                 static $setupDB = false;
 456                 global $wgDBprefix;
 457
 458                 # Make sure we don't mess with the live DB
 459                 if (!$setupDB && $wgDBprefix === 'parsertest_') {
 460                         # oh teh horror
 461                         $GLOBALS['wgLoadBalancer'] = LoadBalancer::newFromParams( $GLOBALS['wgDBservers'] );
 462                         $db = wfGetDB( DB_MASTER );
 463
 464                         $tables = $this->listTables();
 465
 466                         if (!(strcmp($db->getServerVersion(), '4.1') < 0 and stristr($db->getSoftwareLink(), 'MySQL'))) {
 467                                 # Database that supports CREATE TABLE ... LIKE
 468                                 global $wgDBtype;
 469                                 if( $wgDBtype == 'postgres' ) {
 470                                         $def = 'INCLUDING DEFAULTS';
 471                                 } else {
 472                                         $def = '';
 473                                 }
 474                                 foreach ($tables as $tbl) {
 475                                         $newTableName = $db->tableName( $tbl );
 476                                         $tableName = $this->oldTableNames[$tbl];
 477                                         $db->query("CREATE TEMPORARY TABLE $newTableName (LIKE $tableName $def)");
 478                                 }
 479                         } else {
 480                                 # Hack for MySQL versions < 4.1, which don't support
 481                                 # "CREATE TABLE ... LIKE". Note that
 482                                 # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 483                                 # would not create the indexes we need....
 484                                 foreach ($tables as $tbl) {
 485                                         $res = $db->query("SHOW CREATE TABLE {$this->oldTableNames[$tbl]}");
 486                                         $row = $db->fetchRow($res);
 487                                         $create = $row[1];
 488                                         $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/', 'CREATE TEMPORARY TABLE `'
 489                                                 . $wgDBprefix . $tbl .'`', $create);
 490                                         if ($create === $create_tmp) {
 491                                                 # Couldn't do replacement
 492                                                 wfDie("could not create temporary table $tbl");
 493                                         }
 494                                         $db->query($create_tmp);
 495                                 }
 496
 497                         }
 498
 499                         # Hack: insert a few Wikipedia in-project interwiki prefixes,
 500                         # for testing inter-language links
 501                         $db->insert( 'interwiki', array(
 502                                 array( 'iw_prefix' => 'Wikipedia',
 503                                        'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 504                                        'iw_local'  => 0 ),
 505                                 array( 'iw_prefix' => 'MeatBall',
 506                                        'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 507                                        'iw_local'  => 0 ),
 508                                 array( 'iw_prefix' => 'zh',
 509                                        'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 510                                        'iw_local'  => 1 ),
 511                                 array( 'iw_prefix' => 'es',
 512                                        'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 513                                        'iw_local'  => 1 ),
 514                                 array( 'iw_prefix' => 'fr',
 515                                        'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 516                                        'iw_local'  => 1 ),
 517                                 array( 'iw_prefix' => 'ru',
 518                                        'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 519                                        'iw_local'  => 1 ),
 520                                 ) );
 521
 522                         # Hack: Insert an image to work with
 523                         $db->insert( 'image', array(
 524                                 'img_name'        => 'Foobar.jpg',
 525                                 'img_size'        => 12345,
 526                                 'img_description' => 'Some lame file',
 527                                 'img_user'        => 1,
 528                                 'img_user_text'   => 'WikiSysop',
 529                                 'img_timestamp'   => $db->timestamp( '20010115123500' ),
 530                                 'img_width'       => 1941,
 531                                 'img_height'      => 220,
 532                                 'img_bits'        => 24,
 533                                 'img_media_type'  => MEDIATYPE_BITMAP,
 534                                 'img_major_mime'  => "image",
 535                                 'img_minor_mime'  => "jpeg",
 536                                 'img_metadata'    => serialize( array() ),
 537                                 ) );
 538
 539                         # Update certain things in site_stats
 540                         $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 541
 542                         $setupDB = true;
 543                 }
 544         }
 545
 546         /**
 547          * Create a dummy uploads directory which will contain a couple
 548          * of files in order to pass existence tests.
 549          * @return string The directory
 550          */
 551         private function setupUploadDir() {
 552                 global $IP;
 553                 $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 554                 wfDebug( "Creating upload directory $dir\n" );
 555                 mkdir( $dir );
 556                 mkdir( $dir . '/3' );
 557                 mkdir( $dir . '/3/3a' );
 558                 copy( "$IP/skins/monobook/headbg.jpg", "$dir/3/3a/Foobar.jpg" );
 559                 return $dir;
 560         }
 561
 562         /**
 563          * Restore default values and perform any necessary clean-up
 564          * after each test runs.
 565          */
 566         private function teardownGlobals() {
 567                 RepoGroup::destroySingleton();
 568                 foreach( $this->savedGlobals as $var => $val ) {
 569                         $GLOBALS[$var] = $val;
 570                 }
 571                 if( isset( $this->uploadDir ) ) {
 572                         $this->teardownUploadDir( $this->uploadDir );
 573                         unset( $this->uploadDir );
 574                 }
 575         }
 576
 577         /**
 578          * Remove the dummy uploads directory
 579          */
 580         private function teardownUploadDir( $dir ) {
 581                 // delete the files first, then the dirs.
 582                 self::deleteFiles(
 583                         array (
 584                                 "$dir/3/3a/Foobar.jpg",
 585                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
 586                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
 587                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
 588                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
 589                         )
 590                 );
 591
 592                 self::deleteDirs(
 593                         array (
 594                                 "$dir/3/3a",
 595                                 "$dir/3",
 596                                 "$dir/thumb/6/65",
 597                                 "$dir/thumb/6",
 598                                 "$dir/thumb/3/3a/Foobar.jpg",
 599                                 "$dir/thumb/3/3a",
 600                                 "$dir/thumb/3",
 601                                 "$dir/thumb",
 602                                 "$dir",
 603                         )
 604                 );
 605         }
 606
 607         /**
 608          * Delete the specified files, if they exist.
 609          * @param array $files full paths to files to delete.
 610          */
 611         private static function deleteFiles( $files ) {
 612                 foreach( $files as $file ) {
 613                         if( file_exists( $file ) ) {
 614                                 unlink( $file );
 615                         }
 616                 }
 617         }
 618
 619         /**
 620          * Delete the specified directories, if they exist. Must be empty.
 621          * @param array $dirs full paths to directories to delete.
 622          */
 623         private static function deleteDirs( $dirs ) {
 624                 foreach( $dirs as $dir ) {
 625                         if( is_dir( $dir ) ) {
 626                                 rmdir( $dir );
 627                         }
 628                 }
 629         }
 630
 631         /**
 632          * "Running test $desc..."
 633          */
 634         private function showTesting( $desc ) {
 635                 print "Running test $desc... ";
 636         }
 637
 638         /**
 639          * Print a happy success message.
 640          *
 641          * @param string $desc The test name
 642          * @return bool
 643          */
 644         private function showSuccess( $desc ) {
 645                 if( $this->showProgress ) {
 646                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
 647                 }
 648                 return true;
 649         }
 650
 651         /**
 652          * Print a failure message and provide some explanatory output
 653          * about what went wrong if so configured.
 654          *
 655          * @param string $desc The test name
 656          * @param string $result Expected HTML output
 657          * @param string $html Actual HTML output
 658          * @return bool
 659          */
 660         private function showFailure( $desc, $result, $html ) {
 661                 if( $this->showFailure ) {
 662                         if( !$this->showProgress ) {
 663                                 # In quiet mode we didn't show the 'Testing' message before the
 664                                 # test, in case it succeeded. Show it now:
 665                                 $this->showTesting( $desc );
 666                         }
 667                         print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
 668                         if ( $this->showOutput ) {
 669                                 print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
 670                         }
 671                         if( $this->showDiffs ) {
 672                                 print $this->quickDiff( $result, $html );
 673                                 if( !$this->wellFormed( $html ) ) {
 674                                         print "XML error: $this->mXmlError\n";
 675                                 }
 676                         }
 677                 }
 678                 return false;
 679         }
 680
 681         /**
 682          * Run given strings through a diff and return the (colorized) output.
 683          * Requires writable /tmp directory and a 'diff' command in the PATH.
 684          *
 685          * @param string $input
 686          * @param string $output
 687          * @param string $inFileTail Tailing for the input file name
 688          * @param string $outFileTail Tailing for the output file name
 689          * @return string
 690          */
 691         private function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
 692                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
 693
 694                 $infile = "$prefix-$inFileTail";
 695                 $this->dumpToFile( $input, $infile );
 696
 697                 $outfile = "$prefix-$outFileTail";
 698                 $this->dumpToFile( $output, $outfile );
 699
 700                 $diff = `diff -au $infile $outfile`;
 701                 unlink( $infile );
 702                 unlink( $outfile );
 703
 704                 return $this->colorDiff( $diff );
 705         }
 706
 707         /**
 708          * Write the given string to a file, adding a final newline.
 709          *
 710          * @param string $data
 711          * @param string $filename
 712          */
 713         private function dumpToFile( $data, $filename ) {
 714                 $file = fopen( $filename, "wt" );
 715                 fwrite( $file, $data . "\n" );
 716                 fclose( $file );
 717         }
 718
 719         /**
 720          * Colorize unified diff output if set for ANSI color output.
 721          * Subtractions are colored blue, additions red.
 722          *
 723          * @param string $text
 724          * @return string
 725          */
 726         private function colorDiff( $text ) {
 727                 return preg_replace(
 728                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 729                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
 730                                $this->term->color( 31 ) . '$1' . $this->term->reset() ),
 731                         $text );
 732         }
 733
 734         /**
 735          * Insert a temporary test article
 736          * @param string $name the title, including any prefix
 737          * @param string $text the article text
 738          * @param int $line the input line number, for reporting errors
 739          */
 740         private function addArticle($name, $text, $line) {
 741                 $this->setupGlobals();
 742                 $title = Title::newFromText( $name );
 743                 if ( is_null($title) ) {
 744                         wfDie( "invalid title at line $line\n" );
 745                 }
 746
 747                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
 748                 if ($aid != 0) {
 749                         wfDie( "duplicate article at line $line\n" );
 750                 }
 751
 752                 $art = new Article($title);
 753                 $art->insertNewArticle($text, '', false, false );
 754                 $this->teardownGlobals();
 755         }
 756
 757         /**
 758          * Steal a callback function from the primary parser, save it for
 759          * application to our scary parser. If the hook is not installed,
 760          * die a painful dead to warn the others.
 761          * @param string $name
 762          */
 763         private function requireHook( $name ) {
 764                 global $wgParser;
 765                 if( isset( $wgParser->mTagHooks[$name] ) ) {
 766                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
 767                 } else {
 768                         wfDie( "This test suite requires the '$name' hook extension.\n" );
 769                 }
 770         }
 771
 772         /**
 773          * Steal a callback function from the primary parser, save it for
 774          * application to our scary parser. If the hook is not installed,
 775          * die a painful dead to warn the others.
 776          * @param string $name
 777          */
 778         private function requireFunctionHook( $name ) {
 779                 global $wgParser;
 780                 if( isset( $wgParser->mFunctionHooks[$name] ) ) {
 781                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
 782                 } else {
 783                         wfDie( "This test suite requires the '$name' function hook extension.\n" );
 784                 }
 785         }
 786
 787         /*
 788          * Run the "tidy" command on text if the $wgUseTidy
 789          * global is true
 790          *
 791          * @param string $text the text to tidy
 792          * @return string
 793          * @static
 794          */
 795         private function tidy( $text ) {
 796                 global $wgUseTidy;
 797                 if ($wgUseTidy) {
 798                         $text = Parser::tidy($text);
 799                 }
 800                 return $text;
 801         }
 802
 803         private function wellFormed( $text ) {
 804                 $html =
 805                         Sanitizer::hackDocType() .
 806                         '<html>' .
 807                         $text .
 808                         '</html>';
 809
 810                 $parser = xml_parser_create( "UTF-8" );
 811
 812                 # case folding violates XML standard, turn it off
 813                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 814
 815                 if( !xml_parse( $parser, $html, true ) ) {
 816                         $err = xml_error_string( xml_get_error_code( $parser ) );
 817                         $position = xml_get_current_byte_index( $parser );
 818                         $fragment = $this->extractFragment( $html, $position );
 819                         $this->mXmlError = "$err at byte $position:\n$fragment";
 820                         xml_parser_free( $parser );
 821                         return false;
 822                 }
 823                 xml_parser_free( $parser );
 824                 return true;
 825         }
 826
 827         private function extractFragment( $text, $position ) {
 828                 $start = max( 0, $position - 10 );
 829                 $before = $position - $start;
 830                 $fragment = '...' .
 831                         $this->term->color( 34 ) .
 832                         substr( $text, $start, $before ) .
 833                         $this->term->color( 0 ) .
 834                         $this->term->color( 31 ) .
 835                         $this->term->color( 1 ) .
 836                         substr( $text, $position, 1 ) .
 837                         $this->term->color( 0 ) .
 838                         $this->term->color( 34 ) .
 839                         substr( $text, $position + 1, 9 ) .
 840                         $this->term->color( 0 ) .
 841                         '...';
 842                 $display = str_replace( "\n", ' ', $fragment );
 843                 $caret = '   ' .
 844                         str_repeat( ' ', $before ) .
 845                         $this->term->color( 31 ) .
 846                         '^' .
 847                         $this->term->color( 0 );
 848                 return "$display\n$caret";
 849         }
 850 }
 851
 852 class AnsiTermColorer {
 853         function __construct() {
 854         }
 855
 856         /**
 857          * Return ANSI terminal escape code for changing text attribs/color
 858          *
 859          * @param string $color Semicolon-separated list of attribute/color codes
 860          * @return string
 861          */
 862         public function color( $color ) {
 863                 global $wgCommandLineDarkBg;
 864                 $light = $wgCommandLineDarkBg ? "1;" : "0;";
 865                 return "\x1b[{$light}{$color}m";
 866         }
 867
 868         /**
 869          * Return ANSI terminal escape code for restoring default text attributes
 870          *
 871          * @return string
 872          */
 873         public function reset() {
 874                 return $this->color( 0 );
 875         }
 876 }
 877
 878 /* A colour-less terminal */
 879 class DummyTermColorer {
 880         public function color( $color ) {
 881                 return '';
 882         }
 883
 884         public function reset() {
 885                 return '';
 886         }
 887 }
 888
 889 class TestRecorder {
 890         function __construct( $term ) {
 891                 $this->term = $term;
 892         }
 893
 894         function start() {
 895                 $this->total = 0;
 896                 $this->success = 0;
 897         }
 898
 899         function record( $test, $result ) {
 900                 $this->total++;
 901                 $this->success += ($result ? 1 : 0);
 902         }
 903
 904         function end() {
 905                 // dummy
 906         }
 907
 908         function report() {
 909                 if( $this->total > 0 ) {
 910                         $this->reportPercentage( $this->success, $this->total );
 911                 } else {
 912                         wfDie( "No tests found.\n" );
 913                 }
 914         }
 915
 916         function reportPercentage( $success, $total ) {
 917                 $ratio = wfPercent( 100 * $success / $total );
 918                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
 919                 if( $success == $total ) {
 920                         print $this->term->color( 32 ) . "ALL TESTS PASSED!";
 921                 } else {
 922                         $failed = $total - $success ;
 923                         print $this->term->color( 31 ) . "$failed tests failed!";
 924                 }
 925                 print $this->term->reset() . "\n";
 926                 return ($success == $total);
 927         }
 928 }
 929
 930 class DbTestRecorder extends TestRecorder  {
 931         protected $db;      ///< Database connection to the main DB
 932         protected $curRun;  ///< run ID number for the current run
 933         protected $prevRun; ///< run ID number for the previous run, if any
 934
 935         function __construct( $term ) {
 936                 parent::__construct( $term );
 937                 $this->db = wfGetDB( DB_MASTER );
 938         }
 939
 940         /**
 941          * Set up result recording; insert a record for the run with the date
 942          * and all that fun stuff
 943          */
 944         function start() {
 945                 global $wgDBtype;
 946                 parent::start();
 947
 948                 $this->db->begin();
 949
 950                 if( ! $this->db->tableExists( 'testrun' ) or ! $this->db->tableExists( 'testitem') ) {
 951                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
 952             if ($wgDBtype === 'postgres')
 953                                 dbsource( dirname(__FILE__) . '/testRunner.postgres.sql',  $this->db );
 954                         else
 955                                 dbsource( dirname(__FILE__) . '/testRunner.sql',  $this->db );
 956                         echo "OK, resuming.\n";
 957                 }
 958
 959                 // We'll make comparisons against the previous run later...
 960                 $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
 961
 962                 $this->db->insert( 'testrun',
 963                         array(
 964                                 'tr_date'        => $this->db->timestamp(),
 965                                 'tr_mw_version'  => SpecialVersion::getVersion(),
 966                                 'tr_php_version' => phpversion(),
 967                                 'tr_db_version'  => $this->db->getServerVersion(),
 968                                 'tr_uname'       => php_uname()
 969                         ),
 970                         __METHOD__ );
 971                         if ($wgDBtype === 'postgres')
 972                                 $this->curRun = $this->db->currentSequenceValue('testrun_id_seq');
 973                         else
 974                                 $this->curRun = $this->db->insertId();
 975         }
 976
 977         /**
 978          * Record an individual test item's success or failure to the db
 979          * @param string $test
 980          * @param bool $result
 981          */
 982         function record( $test, $result ) {
 983                 parent::record( $test, $result );
 984                 $this->db->insert( 'testitem',
 985                         array(
 986                                 'ti_run'     => $this->curRun,
 987                                 'ti_name'    => $test,
 988                                 'ti_success' => $result ? 1 : 0,
 989                         ),
 990                         __METHOD__ );
 991         }
 992
 993         /**
 994          * Commit transaction and clean up for result recording
 995          */
 996         function end() {
 997                 $this->db->commit();
 998                 parent::end();
 999         }
1000
1001         function report() {
1002                 if( $this->prevRun ) {
1003                         $table = array(
1004                                 array( 'previously failing test(s) now PASSING! :)', 0, 1 ),
1005                                 array( 'previously PASSING test(s) removed o_O', 1, null ),
1006                                 array( 'new PASSING test(s) :)', null, 1 ),
1007
1008                                 array( 'previously passing test(s) now FAILING! :(', 1, 0 ),
1009                                 array( 'previously FAILING test(s) removed O_o', 0, null ),
1010                                 array( 'new FAILING test(s) :(', null, 0 ),
1011                                 array( 'still FAILING test(s) :(', 0, 0 ),
1012                         );
1013                         foreach( $table as $criteria ) {
1014                                 list( $label, $before, $after ) = $criteria;
1015                                 $differences = $this->compareResult( $before, $after );
1016                                 if( $differences ) {
1017                                         $count = count($differences);
1018                                         printf( "\n%4d %s\n", $count, $label );
1019                                         foreach ($differences as $differing_test_name => $statusInfo) {
1020                                                 print "      * $differing_test_name  [$statusInfo]\n";
1021                                         }
1022                                 }
1023                         }
1024                 } else {
1025                         print "No previous test runs to compare against.\n";
1026                 }
1027                 print "\n";
1028                 parent::report();
1029         }
1030
1031         /**
1032          ** Returns an array of the test names with changed results, based on the specified
1033          ** before/after criteria.
1034          */
1035         private function compareResult( $before, $after ) {
1036                 $testitem = $this->db->tableName( 'testitem' );
1037                 $prevRun = intval( $this->prevRun );
1038                 $curRun = intval( $this->curRun );
1039                 $prevStatus = $this->condition( $before );
1040                 $curStatus = $this->condition( $after );
1041
1042                 // note: requires mysql >= ver 4.1 for subselects
1043                 if( is_null( $after ) ) {
1044                         $sql = "
1045                                 select prev.ti_name as t from $testitem as prev
1046                                         where prev.ti_run=$prevRun and
1047                                                 prev.ti_success $prevStatus and
1048                                                 (select current.ti_success from $testitem as current
1049                                                         where current.ti_run=$curRun
1050                                                                 and prev.ti_name=current.ti_name) $curStatus";
1051                 } else {
1052                         $sql = "
1053                                 select current.ti_name as t from $testitem as current
1054                                         where current.ti_run=$curRun and
1055                                                 current.ti_success $curStatus and
1056                                                 (select prev.ti_success from $testitem as prev
1057                                                         where prev.ti_run=$prevRun
1058                                                                 and prev.ti_name=current.ti_name) $prevStatus";
1059                 }
1060                 $result = $this->db->query( $sql, __METHOD__ );
1061                 $retval = array();
1062                 while ($row = $this->db->fetchObject( $result )) {
1063                         $testname = $row->t;
1064                         $retval[$testname] = $this->getTestStatusInfo( $testname, $after, $curRun );
1065                 }
1066                 $this->db->freeResult( $result );
1067                 return $retval;
1068         }
1069
1070         /**
1071          ** Returns a string giving information about when a test last had a status change.
1072          ** Could help to track down when regressions were introduced, as distinct from tests
1073          ** which have never passed (which are more change requests than regressions).
1074          */
1075         private function getTestStatusInfo($testname, $after, $curRun) {
1076
1077                 // If we're looking at a test that has just been removed, then say when it first appeared.
1078                 if ( is_null( $after ) ) {
1079                         $changedRun = $this->db->selectField ( 'testitem',
1080                                                                                                    'MIN(ti_run)',
1081                                                                                                    array( 'ti_name' => $testname ),
1082                                                                                                    __METHOD__ );
1083                         $appear = $this->db->selectRow ( 'testrun',
1084                                                                                          array( 'tr_date', 'tr_mw_version' ),
1085                                                                                          array( 'tr_id' => $changedRun ),
1086                                                                                          __METHOD__ );
1087                         return "First recorded appearance: "
1088                                . date( "d-M-Y H:i:s",  strtotime ( $appear->tr_date ) )
1089                                .  ", " . $appear->tr_mw_version;
1090                 }
1091
1092                 // Otherwise, this test has previous recorded results.
1093                 // See when this test last had a different result to what we're seeing now.
1094                 $changedRun = $this->db->selectField ( 'testitem',
1095                                                                                            'MAX(ti_run)',
1096                                                                                            array(
1097                                                                                                'ti_name'    => $testname,
1098                                                                                                'ti_success' => ($after ? "0" : "1"),
1099                                                                                                "ti_run != " . $this->db->addQuotes ( $curRun )
1100                                                                                                 ),
1101                                                                                                 __METHOD__ );
1102
1103                 // If no record of ever having had a different result.
1104                 if ( is_null ( $changedRun ) ) {
1105                         if ($after == "0") {
1106                                 return "Has never passed";
1107                         } else {
1108                                 return "Has never failed";
1109                         }
1110                 }
1111
1112                 // Otherwise, we're looking at a test whose status has changed.
1113                 // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
1114                 // In this situation, give as much info as we can as to when it changed status.
1115                 $pre  = $this->db->selectRow ( 'testrun',
1116                                                                                 array( 'tr_date', 'tr_mw_version' ),
1117                                                                                 array( 'tr_id' => $changedRun ),
1118                                                                                 __METHOD__ );
1119                 $post = $this->db->selectRow ( 'testrun',
1120                                                                                 array( 'tr_date', 'tr_mw_version' ),
1121                                                                                 array( "tr_id > " . $this->db->addQuotes ( $changedRun) ),
1122                                                                                 __METHOD__,
1123                                                                                 array( "LIMIT" => 1, "ORDER BY" => 'tr_id' )
1124                                                                          );
1125
1126                 return ( $after == "0" ? "Introduced" : "Fixed" ) . " between "
1127                                 . date( "d-M-Y H:i:s",  strtotime ( $pre->tr_date ) ) .  ", " . $pre->tr_mw_version
1128                                 . " and "
1129                                 . date( "d-M-Y H:i:s",  strtotime ( $post->tr_date  ) ) .  ", " . $post->tr_mw_version ;
1130         }
1131
1132         /**
1133          ** Helper function for compareResult() database querying.
1134          */
1135         private function condition( $value ) {
1136                 if( is_null( $value ) ) {
1137                         return 'IS NULL';
1138                 } else {
1139                         return '=' . intval( $value );
1140                 }
1141         }
1142
1143 }
1144
1145 class DbTestPreviewer extends DbTestRecorder  {
1146         /**
1147          * Commit transaction and clean up for result recording
1148          */
1149         function end() {
1150                 $this->db->rollback();
1151                 TestRecorder::end();
1152         }
1153 }
1154
1155 ?>