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 => $callback ) {
 288                         $parser->setFunctionHook( $tag, $callback );
 289                 }
 290                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 291
 292                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 293
 294                 $matches = array();
 295                 if (preg_match('/\\bpst\\b/i', $opts)) {
 296                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 297                 } elseif (preg_match('/\\bmsg\\b/i', $opts)) {
 298                         $out = $parser->transformMsg( $input, $options );
 299                 } elseif( preg_match( '/\\bsection=(\d+)\b/i', $opts, $matches ) ) {
 300                         $section = intval( $matches[1] );
 301                         $out = $parser->getSection( $input, $section );
 302                 } elseif( preg_match( '/\\breplace=(\d+),"(.*?)"/i', $opts, $matches ) ) {
 303                         $section = intval( $matches[1] );
 304                         $replace = $matches[2];
 305                         $out = $parser->replaceSection( $input, $section, $replace );
 306                 } else {
 307                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 308                         $out = $output->getText();
 309
 310                         if (preg_match('/\\bill\\b/i', $opts)) {
 311                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 312                         } else if (preg_match('/\\bcat\\b/i', $opts)) {
 313                                 global $wgOut;
 314                                 $wgOut->addCategoryLinks($output->getCategories());
 315                                 $out = $this->tidy ( implode( ' ', $wgOut->getCategoryLinks() ) );
 316                         }
 317
 318                         $result = $this->tidy($result);
 319                 }
 320
 321                 $this->teardownGlobals();
 322
 323                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 324                         return $this->showSuccess( $desc );
 325                 } else {
 326                         return $this->showFailure( $desc, $result, $out );
 327                 }
 328         }
 329
 330         /**
 331          * Set up the global variables for a consistent environment for each test.
 332          * Ideally this should replace the global configuration entirely.
 333          */
 334         private function setupGlobals($opts = '') {
 335                 # Save the prefixed / quoted table names for later use when we make the temporaries.
 336                 $db = wfGetDB( DB_READ );
 337                 $this->oldTableNames = array();
 338                 foreach( $this->listTables() as $table ) {
 339                         $this->oldTableNames[$table] = $db->tableName( $table );
 340                 }
 341                 if( !isset( $this->uploadDir ) ) {
 342                         $this->uploadDir = $this->setupUploadDir();
 343                 }
 344
 345                 $m = array();
 346                 if( preg_match( '/language=([a-z]+(?:_[a-z]+)?)/', $opts, $m ) ) {
 347                         $lang = $m[1];
 348                 } else {
 349                         $lang = 'en';
 350                 }
 351
 352                 if( preg_match( '/variant=([a-z]+(?:-[a-z]+)?)/', $opts, $m ) ) {
 353                         $variant = $m[1];
 354                 } else {
 355                         $variant = false;
 356                 }
 357
 358
 359                 $settings = array(
 360                         'wgServer' => 'http://localhost',
 361                         'wgScript' => '/index.php',
 362                         'wgScriptPath' => '/',
 363                         'wgArticlePath' => '/wiki/$1',
 364                         'wgActionPaths' => array(),
 365                         'wgUploadPath' => 'http://example.com/images',
 366                         'wgUploadDirectory' => $this->uploadDir,
 367                         'wgStyleSheetPath' => '/skins',
 368                         'wgSitename' => 'MediaWiki',
 369                         'wgServerName' => 'Britney Spears',
 370                         'wgLanguageCode' => $lang,
 371                         'wgContLanguageCode' => $lang,
 372                         'wgDBprefix' => 'parsertest_',
 373                         'wgRawHtml' => preg_match('/\\brawhtml\\b/i', $opts),
 374                         'wgLang' => null,
 375                         'wgContLang' => null,
 376                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 377                         'wgMaxTocLevel' => 999,
 378                         'wgCapitalLinks' => true,
 379                         'wgNoFollowLinks' => true,
 380                         'wgThumbnailScriptPath' => false,
 381                         'wgUseTeX' => false,
 382                         'wgLocaltimezone' => 'UTC',
 383                         'wgAllowExternalImages' => true,
 384                         'wgUseTidy' => false,
 385                         'wgDefaultLanguageVariant' => $variant,
 386                         'wgVariantArticlePath' => false,
 387                         );
 388                 $this->savedGlobals = array();
 389                 foreach( $settings as $var => $val ) {
 390                         $this->savedGlobals[$var] = $GLOBALS[$var];
 391                         $GLOBALS[$var] = $val;
 392                 }
 393                 $langObj = Language::factory( $lang );
 394                 $GLOBALS['wgLang'] = $langObj;
 395                 $GLOBALS['wgContLang'] = $langObj;
 396
 397                 $GLOBALS['wgLoadBalancer']->loadMasterPos();
 398                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 399                 $this->setupDatabase();
 400
 401                 global $wgUser;
 402                 $wgUser = new User();
 403         }
 404
 405         /**
 406          * List of temporary tables to create, without prefix.
 407          * Some of these probably aren't necessary.
 408          */
 409         private function listTables() {
 410                 $tables = array('user', 'page', 'page_restrictions', 'revision', 'text',
 411                         'pagelinks', 'imagelinks', 'categorylinks',
 412                         'templatelinks', 'externallinks', 'langlinks',
 413                         'site_stats', 'hitcounter',
 414                         'ipblocks', 'image', 'oldimage',
 415                         'recentchanges',
 416                         'watchlist', 'math', 'searchindex',
 417                         'interwiki', 'querycache',
 418                         'objectcache', 'job', 'redirect',
 419                         'querycachetwo'
 420                 );
 421
 422                 // Allow extensions to add to the list of tables to duplicate;
 423                 // may be necessary if they hook into page save or other code
 424                 // which will require them while running tests.
 425                 wfRunHooks( 'ParserTestTables', array( &$tables ) );
 426
 427                 return $tables;
 428         }
 429
 430         /**
 431          * Set up a temporary set of wiki tables to work with for the tests.
 432          * Currently this will only be done once per run, and any changes to
 433          * the db will be visible to later tests in the run.
 434          */
 435         private function setupDatabase() {
 436                 static $setupDB = false;
 437                 global $wgDBprefix;
 438
 439                 # Make sure we don't mess with the live DB
 440                 if (!$setupDB && $wgDBprefix === 'parsertest_') {
 441                         # oh teh horror
 442                         $GLOBALS['wgLoadBalancer'] = LoadBalancer::newFromParams( $GLOBALS['wgDBservers'] );
 443                         $db = wfGetDB( DB_MASTER );
 444
 445                         $tables = $this->listTables();
 446
 447                         if (!(strcmp($db->getServerVersion(), '4.1') < 0 and stristr($db->getSoftwareLink(), 'MySQL'))) {
 448                                 # Database that supports CREATE TABLE ... LIKE
 449                                 global $wgDBtype;
 450                                 if( $wgDBtype == 'postgres' ) {
 451                                         $def = 'INCLUDING DEFAULTS';
 452                                 } else {
 453                                         $def = '';
 454                                 }
 455                                 foreach ($tables as $tbl) {
 456                                         $newTableName = $db->tableName( $tbl );
 457                                         $tableName = $this->oldTableNames[$tbl];
 458                                         $db->query("CREATE TEMPORARY TABLE $newTableName (LIKE $tableName $def)");
 459                                 }
 460                         } else {
 461                                 # Hack for MySQL versions < 4.1, which don't support
 462                                 # "CREATE TABLE ... LIKE". Note that
 463                                 # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 464                                 # would not create the indexes we need....
 465                                 foreach ($tables as $tbl) {
 466                                         $res = $db->query("SHOW CREATE TABLE {$this->oldTableNames[$tbl]}");
 467                                         $row = $db->fetchRow($res);
 468                                         $create = $row[1];
 469                                         $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/', 'CREATE TEMPORARY TABLE `'
 470                                                 . $wgDBprefix . $tbl .'`', $create);
 471                                         if ($create === $create_tmp) {
 472                                                 # Couldn't do replacement
 473                                                 wfDie("could not create temporary table $tbl");
 474                                         }
 475                                         $db->query($create_tmp);
 476                                 }
 477
 478                         }
 479
 480                         # Hack: insert a few Wikipedia in-project interwiki prefixes,
 481                         # for testing inter-language links
 482                         $db->insert( 'interwiki', array(
 483                                 array( 'iw_prefix' => 'Wikipedia',
 484                                        'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 485                                        'iw_local'  => 0 ),
 486                                 array( 'iw_prefix' => 'MeatBall',
 487                                        'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 488                                        'iw_local'  => 0 ),
 489                                 array( 'iw_prefix' => 'zh',
 490                                        'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 491                                        'iw_local'  => 1 ),
 492                                 array( 'iw_prefix' => 'es',
 493                                        'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 494                                        'iw_local'  => 1 ),
 495                                 array( 'iw_prefix' => 'fr',
 496                                        'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 497                                        'iw_local'  => 1 ),
 498                                 array( 'iw_prefix' => 'ru',
 499                                        'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 500                                        'iw_local'  => 1 ),
 501                                 ) );
 502
 503                         # Hack: Insert an image to work with
 504                         $db->insert( 'image', array(
 505                                 'img_name'        => 'Foobar.jpg',
 506                                 'img_size'        => 12345,
 507                                 'img_description' => 'Some lame file',
 508                                 'img_user'        => 1,
 509                                 'img_user_text'   => 'WikiSysop',
 510                                 'img_timestamp'   => $db->timestamp( '20010115123500' ),
 511                                 'img_width'       => 1941,
 512                                 'img_height'      => 220,
 513                                 'img_bits'        => 24,
 514                                 'img_media_type'  => MEDIATYPE_BITMAP,
 515                                 'img_major_mime'  => "image",
 516                                 'img_minor_mime'  => "jpeg",
 517                                 'img_metadata'    => serialize( array() ),
 518                                 ) );
 519
 520                         # Update certain things in site_stats
 521                         $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 522
 523                         $setupDB = true;
 524                 }
 525         }
 526
 527         /**
 528          * Create a dummy uploads directory which will contain a couple
 529          * of files in order to pass existence tests.
 530          * @return string The directory
 531          */
 532         private function setupUploadDir() {
 533                 global $IP;
 534
 535                 $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 536                 mkdir( $dir );
 537                 mkdir( $dir . '/3' );
 538                 mkdir( $dir . '/3/3a' );
 539
 540                 $img = "$IP/skins/monobook/headbg.jpg";
 541                 $h = fopen($img, 'r');
 542                 $c = fread($h, filesize($img));
 543                 fclose($h);
 544
 545                 $f = fopen( $dir . '/3/3a/Foobar.jpg', 'wb' );
 546                 fwrite( $f, $c );
 547                 fclose( $f );
 548                 return $dir;
 549         }
 550
 551         /**
 552          * Restore default values and perform any necessary clean-up
 553          * after each test runs.
 554          */
 555         private function teardownGlobals() {
 556                 foreach( $this->savedGlobals as $var => $val ) {
 557                         $GLOBALS[$var] = $val;
 558                 }
 559                 if( isset( $this->uploadDir ) ) {
 560                         $this->teardownUploadDir( $this->uploadDir );
 561                         unset( $this->uploadDir );
 562                 }
 563         }
 564
 565         /**
 566          * Remove the dummy uploads directory
 567          */
 568         private function teardownUploadDir( $dir ) {
 569                 // delete the files first, then the dirs.
 570                 self::deleteFiles(
 571                         array (
 572                                 "$dir/3/3a/Foobar.jpg",
 573                                 "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg",
 574                                 "$dir/thumb/3/3a/Foobar.jpg/200px-Foobar.jpg",
 575                                 "$dir/thumb/3/3a/Foobar.jpg/640px-Foobar.jpg",
 576                                 "$dir/thumb/3/3a/Foobar.jpg/120px-Foobar.jpg",
 577                         )
 578                 );
 579
 580                 self::deleteDirs(
 581                         array (
 582                                 "$dir/3/3a",
 583                                 "$dir/3",
 584                                 "$dir/thumb/6/65",
 585                                 "$dir/thumb/6",
 586                                 "$dir/thumb/3/3a/Foobar.jpg",
 587                                 "$dir/thumb/3/3a",
 588                                 "$dir/thumb/3",
 589                                 "$dir/thumb",
 590                                 "$dir",
 591                         )
 592                 );
 593         }
 594
 595         /**
 596          * @desc delete the specified files, if they exist.
 597          * @param array $files full paths to files to delete.
 598          */
 599         private static function deleteFiles( $files ) {
 600                 foreach( $files as $file ) {
 601                         if( file_exists( $file ) ) {
 602                                 unlink( $file );
 603                         }
 604                 }
 605         }
 606
 607         /**
 608          * @desc delete the specified directories, if they exist. Must be empty.
 609          * @param array $dirs full paths to directories to delete.
 610          */
 611         private static function deleteDirs( $dirs ) {
 612                 foreach( $dirs as $dir ) {
 613                         if( is_dir( $dir ) ) {
 614                                 rmdir( $dir );
 615                         }
 616                 }
 617         }
 618
 619         /**
 620          * "Running test $desc..."
 621          */
 622         private function showTesting( $desc ) {
 623                 print "Running test $desc... ";
 624         }
 625
 626         /**
 627          * Print a happy success message.
 628          *
 629          * @param string $desc The test name
 630          * @return bool
 631          */
 632         private function showSuccess( $desc ) {
 633                 if( $this->showProgress ) {
 634                         print $this->term->color( '1;32' ) . 'PASSED' . $this->term->reset() . "\n";
 635                 }
 636                 return true;
 637         }
 638
 639         /**
 640          * Print a failure message and provide some explanatory output
 641          * about what went wrong if so configured.
 642          *
 643          * @param string $desc The test name
 644          * @param string $result Expected HTML output
 645          * @param string $html Actual HTML output
 646          * @return bool
 647          */
 648         private function showFailure( $desc, $result, $html ) {
 649                 if( $this->showFailure ) {
 650                         if( !$this->showProgress ) {
 651                                 # In quiet mode we didn't show the 'Testing' message before the
 652                                 # test, in case it succeeded. Show it now:
 653                                 $this->showTesting( $desc );
 654                         }
 655                         print $this->term->color( '31' ) . 'FAILED!' . $this->term->reset() . "\n";
 656                         if ( $this->showOutput ) {
 657                                 print "--- Expected ---\n$result\n--- Actual ---\n$html\n";
 658                         }
 659                         if( $this->showDiffs ) {
 660                                 print $this->quickDiff( $result, $html );
 661                                 if( !$this->wellFormed( $html ) ) {
 662                                         print "XML error: $this->mXmlError\n";
 663                                 }
 664                         }
 665                 }
 666                 return false;
 667         }
 668
 669         /**
 670          * Run given strings through a diff and return the (colorized) output.
 671          * Requires writable /tmp directory and a 'diff' command in the PATH.
 672          *
 673          * @param string $input
 674          * @param string $output
 675          * @param string $inFileTail Tailing for the input file name
 676          * @param string $outFileTail Tailing for the output file name
 677          * @return string
 678          */
 679         private function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
 680                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
 681
 682                 $infile = "$prefix-$inFileTail";
 683                 $this->dumpToFile( $input, $infile );
 684
 685                 $outfile = "$prefix-$outFileTail";
 686                 $this->dumpToFile( $output, $outfile );
 687
 688                 $diff = `diff -au $infile $outfile`;
 689                 unlink( $infile );
 690                 unlink( $outfile );
 691
 692                 return $this->colorDiff( $diff );
 693         }
 694
 695         /**
 696          * Write the given string to a file, adding a final newline.
 697          *
 698          * @param string $data
 699          * @param string $filename
 700          */
 701         private function dumpToFile( $data, $filename ) {
 702                 $file = fopen( $filename, "wt" );
 703                 fwrite( $file, $data . "\n" );
 704                 fclose( $file );
 705         }
 706
 707         /**
 708          * Colorize unified diff output if set for ANSI color output.
 709          * Subtractions are colored blue, additions red.
 710          *
 711          * @param string $text
 712          * @return string
 713          */
 714         private function colorDiff( $text ) {
 715                 return preg_replace(
 716                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 717                         array( $this->term->color( 34 ) . '$1' . $this->term->reset(),
 718                                $this->term->color( 31 ) . '$1' . $this->term->reset() ),
 719                         $text );
 720         }
 721
 722         /**
 723          * Insert a temporary test article
 724          * @param string $name the title, including any prefix
 725          * @param string $text the article text
 726          * @param int $line the input line number, for reporting errors
 727          */
 728         private function addArticle($name, $text, $line) {
 729                 $this->setupGlobals();
 730                 $title = Title::newFromText( $name );
 731                 if ( is_null($title) ) {
 732                         wfDie( "invalid title at line $line\n" );
 733                 }
 734
 735                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
 736                 if ($aid != 0) {
 737                         wfDie( "duplicate article at line $line\n" );
 738                 }
 739
 740                 $art = new Article($title);
 741                 $art->insertNewArticle($text, '', false, false );
 742                 $this->teardownGlobals();
 743         }
 744
 745         /**
 746          * Steal a callback function from the primary parser, save it for
 747          * application to our scary parser. If the hook is not installed,
 748          * die a painful dead to warn the others.
 749          * @param string $name
 750          */
 751         private function requireHook( $name ) {
 752                 global $wgParser;
 753                 if( isset( $wgParser->mTagHooks[$name] ) ) {
 754                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
 755                 } else {
 756                         wfDie( "This test suite requires the '$name' hook extension.\n" );
 757                 }
 758         }
 759
 760         /**
 761          * Steal a callback function from the primary parser, save it for
 762          * application to our scary parser. If the hook is not installed,
 763          * die a painful dead to warn the others.
 764          * @param string $name
 765          */
 766         private function requireFunctionHook( $name ) {
 767                 global $wgParser;
 768                 if( isset( $wgParser->mFunctionHooks[$name] ) ) {
 769                         $this->functionHooks[$name] = $wgParser->mFunctionHooks[$name];
 770                 } else {
 771                         wfDie( "This test suite requires the '$name' function hook extension.\n" );
 772                 }
 773         }
 774
 775         /*
 776          * Run the "tidy" command on text if the $wgUseTidy
 777          * global is true
 778          *
 779          * @param string $text the text to tidy
 780          * @return string
 781          * @static
 782          */
 783         private function tidy( $text ) {
 784                 global $wgUseTidy;
 785                 if ($wgUseTidy) {
 786                         $text = Parser::tidy($text);
 787                 }
 788                 return $text;
 789         }
 790
 791         private function wellFormed( $text ) {
 792                 $html =
 793                         Sanitizer::hackDocType() .
 794                         '<html>' .
 795                         $text .
 796                         '</html>';
 797
 798                 $parser = xml_parser_create( "UTF-8" );
 799
 800                 # case folding violates XML standard, turn it off
 801                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 802
 803                 if( !xml_parse( $parser, $html, true ) ) {
 804                         $err = xml_error_string( xml_get_error_code( $parser ) );
 805                         $position = xml_get_current_byte_index( $parser );
 806                         $fragment = $this->extractFragment( $html, $position );
 807                         $this->mXmlError = "$err at byte $position:\n$fragment";
 808                         xml_parser_free( $parser );
 809                         return false;
 810                 }
 811                 xml_parser_free( $parser );
 812                 return true;
 813         }
 814
 815         private function extractFragment( $text, $position ) {
 816                 $start = max( 0, $position - 10 );
 817                 $before = $position - $start;
 818                 $fragment = '...' .
 819                         $this->term->color( 34 ) .
 820                         substr( $text, $start, $before ) .
 821                         $this->term->color( 0 ) .
 822                         $this->term->color( 31 ) .
 823                         $this->term->color( 1 ) .
 824                         substr( $text, $position, 1 ) .
 825                         $this->term->color( 0 ) .
 826                         $this->term->color( 34 ) .
 827                         substr( $text, $position + 1, 9 ) .
 828                         $this->term->color( 0 ) .
 829                         '...';
 830                 $display = str_replace( "\n", ' ', $fragment );
 831                 $caret = '   ' .
 832                         str_repeat( ' ', $before ) .
 833                         $this->term->color( 31 ) .
 834                         '^' .
 835                         $this->term->color( 0 );
 836                 return "$display\n$caret";
 837         }
 838 }
 839
 840 class AnsiTermColorer {
 841         function __construct() {
 842         }
 843
 844         /**
 845          * Return ANSI terminal escape code for changing text attribs/color
 846          *
 847          * @param string $color Semicolon-separated list of attribute/color codes
 848          * @return string
 849          */
 850         public function color( $color ) {
 851                 global $wgCommandLineDarkBg;
 852                 $light = $wgCommandLineDarkBg ? "1;" : "0;";
 853                 return "\x1b[{$light}{$color}m";
 854         }
 855
 856         /**
 857          * Return ANSI terminal escape code for restoring default text attributes
 858          *
 859          * @return string
 860          */
 861         public function reset() {
 862                 return $this->color( 0 );
 863         }
 864 }
 865
 866 /* A colour-less terminal */
 867 class DummyTermColorer {
 868         public function color( $color ) {
 869                 return '';
 870         }
 871
 872         public function reset() {
 873                 return '';
 874         }
 875 }
 876
 877 class TestRecorder {
 878         function __construct( $term ) {
 879                 $this->term = $term;
 880         }
 881
 882         function start() {
 883                 $this->total = 0;
 884                 $this->success = 0;
 885         }
 886
 887         function record( $test, $result ) {
 888                 $this->total++;
 889                 $this->success += ($result ? 1 : 0);
 890         }
 891
 892         function end() {
 893                 // dummy
 894         }
 895
 896         function report() {
 897                 if( $this->total > 0 ) {
 898                         $this->reportPercentage( $this->success, $this->total );
 899                 } else {
 900                         wfDie( "No tests found.\n" );
 901                 }
 902         }
 903
 904         function reportPercentage( $success, $total ) {
 905                 $ratio = wfPercent( 100 * $success / $total );
 906                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
 907                 if( $success == $total ) {
 908                         print $this->term->color( 32 ) . "ALL TESTS PASSED!";
 909                 } else {
 910                         $failed = $total - $success ;
 911                         print $this->term->color( 31 ) . "$failed tests failed!";
 912                 }
 913                 print $this->term->reset() . "\n";
 914                 return ($success == $total);
 915         }
 916 }
 917
 918 class DbTestRecorder extends TestRecorder  {
 919         protected $db;      ///< Database connection to the main DB
 920         protected $curRun;  ///< run ID number for the current run
 921         protected $prevRun; ///< run ID number for the previous run, if any
 922
 923         function __construct( $term ) {
 924                 parent::__construct( $term );
 925                 $this->db = wfGetDB( DB_MASTER );
 926         }
 927
 928         /**
 929          * Set up result recording; insert a record for the run with the date
 930          * and all that fun stuff
 931          */
 932         function start() {
 933                 parent::start();
 934
 935                 $this->db->begin();
 936
 937                 if( ! $this->db->tableExists( 'testrun' ) or ! $this->db->tableExists( 'testitem') ) {
 938                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
 939                         dbsource( 'testRunner.sql',  $this->db );
 940                         echo "OK, resuming.\n";
 941                 }
 942
 943                 // We'll make comparisons against the previous run later...
 944                 $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
 945
 946                 $this->db->insert( 'testrun',
 947                         array(
 948                                 'tr_date'        => $this->db->timestamp(),
 949                                 'tr_mw_version'  => SpecialVersion::getVersion(),
 950                                 'tr_php_version' => phpversion(),
 951                                 'tr_db_version'  => $this->db->getServerVersion(),
 952                                 'tr_uname'       => php_uname()
 953                         ),
 954                         __METHOD__ );
 955                 $this->curRun = $this->db->insertId();
 956         }
 957
 958         /**
 959          * Record an individual test item's success or failure to the db
 960          * @param string $test
 961          * @param bool $result
 962          */
 963         function record( $test, $result ) {
 964                 parent::record( $test, $result );
 965                 $this->db->insert( 'testitem',
 966                         array(
 967                                 'ti_run'     => $this->curRun,
 968                                 'ti_name'    => $test,
 969                                 'ti_success' => $result ? 1 : 0,
 970                         ),
 971                         __METHOD__ );
 972         }
 973
 974         /**
 975          * Commit transaction and clean up for result recording
 976          */
 977         function end() {
 978                 $this->db->commit();
 979                 parent::end();
 980         }
 981
 982         function report() {
 983                 if( $this->prevRun ) {
 984                         $table = array(
 985                                 array( 'previously failing test(s) now PASSING! :)', 0, 1 ),
 986                                 array( 'previously PASSING test(s) removed o_O', 1, null ),
 987                                 array( 'new PASSING test(s) :)', null, 1 ),
 988
 989                                 array( 'previously passing test(s) now FAILING! :(', 1, 0 ),
 990                                 array( 'previously FAILING test(s) removed O_o', 0, null ),
 991                                 array( 'new FAILING test(s) :(', null, 0 ),
 992                                 array( 'still FAILING test(s) :(', 0, 0 ),
 993                         );
 994                         foreach( $table as $criteria ) {
 995                                 list( $label, $before, $after ) = $criteria;
 996                                 $differences = $this->compareResult( $before, $after );
 997                                 if( $differences ) {
 998                                         $count = count($differences);
 999                                         printf( "\n%4d %s\n", $count, $label );
1000                                         foreach ($differences as $differing_test_name => $statusInfo) {
1001                                                 print "      * $differing_test_name  [$statusInfo]\n";
1002                                         }
1003                                 }
1004                         }
1005                 } else {
1006                         print "No previous test runs to compare against.\n";
1007                 }
1008                 print "\n";
1009                 parent::report();
1010         }
1011
1012         /**
1013          ** Returns an array of the test names with changed results, based on the specified
1014          ** before/after criteria.
1015          */
1016         private function compareResult( $before, $after ) {
1017                 $testitem = $this->db->tableName( 'testitem' );
1018                 $prevRun = intval( $this->prevRun );
1019                 $curRun = intval( $this->curRun );
1020                 $prevStatus = $this->condition( $before );
1021                 $curStatus = $this->condition( $after );
1022
1023                 // note: requires mysql >= ver 4.1 for subselects
1024                 if( is_null( $after ) ) {
1025                         $sql = "
1026                                 select prev.ti_name as t from $testitem as prev
1027                                         where prev.ti_run=$prevRun and
1028                                                 prev.ti_success $prevStatus and
1029                                                 (select current.ti_success from $testitem as current
1030                                                         where current.ti_run=$curRun
1031                                                                 and prev.ti_name=current.ti_name) $curStatus";
1032                 } else {
1033                         $sql = "
1034                                 select current.ti_name as t from $testitem as current
1035                                         where current.ti_run=$curRun and
1036                                                 current.ti_success $curStatus and
1037                                                 (select prev.ti_success from $testitem as prev
1038                                                         where prev.ti_run=$prevRun
1039                                                                 and prev.ti_name=current.ti_name) $prevStatus";
1040                 }
1041                 $result = $this->db->query( $sql, __METHOD__ );
1042                 $retval = array();
1043                 while ($row = $this->db->fetchObject( $result )) {
1044                         $testname = $row->t;
1045                         $retval[$testname] = $this->getTestStatusInfo( $testname, $after, $curRun );
1046                 }
1047                 $this->db->freeResult( $result );
1048                 return $retval;
1049         }
1050
1051         /**
1052          ** Returns a string giving information about when a test last had a status change.
1053          ** Could help to track down when regressions were introduced, as distinct from tests
1054          ** which have never passed (which are more change requests than regressions).
1055          */
1056         private function getTestStatusInfo($testname, $after, $curRun) {
1057
1058                 // If we're looking at a test that has just been removed, then say when it first appeared.
1059                 if ( is_null( $after ) ) {
1060                         $changedRun = $this->db->selectField ( 'testitem',
1061                                                                                                    'MIN(ti_run)',
1062                                                                                                    array( 'ti_name' => $testname ),
1063                                                                                                    __METHOD__ );
1064                         $appear = $this->db->selectRow ( 'testrun',
1065                                                                                          array( 'tr_date', 'tr_mw_version' ),
1066                                                                                          array( 'tr_id' => $changedRun ),
1067                                                                                          __METHOD__ );
1068                         return "First recorded appearance: "
1069                                . date( "d-M-Y H:i:s",  strtotime ( $appear->tr_date ) )
1070                                .  ", " . $appear->tr_mw_version;
1071                 }
1072
1073                 // Otherwise, this test has previous recorded results.
1074                 // See when this test last had a different result to what we're seeing now.
1075                 $changedRun = $this->db->selectField ( 'testitem',
1076                                                                                            'MAX(ti_run)',
1077                                                                                            array(
1078                                                                                                'ti_name'    => $testname,
1079                                                                                                'ti_success' => ($after ? "0" : "1"),
1080                                                                                                "ti_run != " . $this->db->addQuotes ( $curRun )
1081                                                                                                 ),
1082                                                                                                 __METHOD__ );
1083
1084                 // If no record of ever having had a different result.
1085                 if ( is_null ( $changedRun ) ) {
1086                         if ($after == "0") {
1087                                 return "Has never passed";
1088                         } else {
1089                                 return "Has never failed";
1090                         }
1091                 }
1092
1093                 // Otherwise, we're looking at a test whose status has changed.
1094                 // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
1095                 // In this situation, give as much info as we can as to when it changed status.
1096                 $pre  = $this->db->selectRow ( 'testrun',
1097                                                                                 array( 'tr_date', 'tr_mw_version' ),
1098                                                                                 array( 'tr_id' => $changedRun ),
1099                                                                                 __METHOD__ );
1100                 $post = $this->db->selectRow ( 'testrun',
1101                                                                                 array( 'tr_date', 'tr_mw_version' ),
1102                                                                                 array( "tr_id > " . $this->db->addQuotes ( $changedRun) ),
1103                                                                                 __METHOD__,
1104                                                                                 array( "LIMIT" => 1, "ORDER BY" => 'tr_id' )
1105                                                                          );
1106
1107                 return ( $after == "0" ? "Introduced" : "Fixed" ) . " between "
1108                                 . date( "d-M-Y H:i:s",  strtotime ( $pre->tr_date ) ) .  ", " . $pre->tr_mw_version
1109                                 . " and "
1110                                 . date( "d-M-Y H:i:s",  strtotime ( $post->tr_date  ) ) .  ", " . $post->tr_mw_version ;
1111         }
1112
1113         /**
1114          ** Helper function for compareResult() database querying.
1115          */
1116         private function condition( $value ) {
1117                 if( is_null( $value ) ) {
1118                         return 'IS NULL';
1119                 } else {
1120                         return '=' . intval( $value );
1121                 }
1122         }
1123
1124 }
1125
1126 class DbTestPreviewer extends DbTestRecorder  {
1127         /**
1128          * Commit transaction and clean up for result recording
1129          */
1130         function end() {
1131                 $this->db->rollback();
1132                 TestRecorder::end();
1133         }
1134 }
1135
1136 ?>