maintenance/parserTests.inc

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>
   3 # http://www.mediawiki.org/
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19
  20 /**
  21  * @todo Make this more independent of the configuration (and if possible the database)
  22  * @todo document
  23  * @package MediaWiki
  24  * @subpackage Maintenance
  25  */
  26
  27 /** */
  28 $options = array( 'quick', 'color', 'quiet', 'help' );
  29 $optionsWithArgs = array( 'regex' );
  30
  31 require_once( 'commandLine.inc' );
  32 require_once( "$IP/includes/ObjectCache.php" );
  33 require_once( "$IP/includes/BagOStuff.php" );
  34 require_once( "$IP/languages/LanguageUtf8.php" );
  35 require_once( "$IP/includes/Hooks.php" );
  36 require_once( "$IP/maintenance/parserTestsParserHook.php" );
  37 require_once( "$IP/maintenance/parserTestsStaticParserHook.php" );
  38 require_once( "$IP/maintenance/parserTestsParserTime.php" );
  39
  40 /**
  41  * @package MediaWiki
  42  * @subpackage Maintenance
  43  */
  44 class ParserTest {
  45         /**
  46          * boolean $color whereas output should be colorized
  47          * @private
  48          */
  49         var $color;
  50
  51         /**
  52          * boolean $lightcolor whereas output should use light colors
  53          * @private
  54          */
  55         var $lightcolor;
  56
  57         /**
  58          * Sets terminal colorization and diff/quick modes depending on OS and
  59          * command-line options (--color and --quick).
  60          *
  61          * @public
  62          */
  63         function ParserTest() {
  64                 global $options;
  65
  66                 # Only colorize output if stdout is a terminal.
  67                 $this->lightcolor = false;
  68                 $this->color = !wfIsWindows() && posix_isatty(1);
  69
  70                 if( isset( $options['color'] ) ) {
  71                         switch( $options['color'] ) {
  72                         case 'no':
  73                                 $this->color = false;
  74                                 break;
  75                         case 'light':
  76                                 $this->lightcolor = true;
  77                                 # Fall through
  78                         case 'yes':
  79                         default:
  80                                 $this->color = true;
  81                                 break;
  82                         }
  83                 }
  84
  85                 $this->showDiffs = !isset( $options['quick'] );
  86
  87                 $this->quiet = isset( $options['quiet'] );
  88
  89                 if (isset($options['regex'])) {
  90                         $this->regex = $options['regex'];
  91                 } else {
  92                         # Matches anything
  93                         $this->regex = '';
  94                 }
  95
  96                 $this->hooks = array();
  97         }
  98
  99         /**
 100          * Remove last character if it is a newline
 101          * @private
 102          */
 103         function chomp($s) {
 104                 if (substr($s, -1) === "\n") {
 105                         return substr($s, 0, -1);
 106                 }
 107                 else {
 108                         return $s;
 109                 }
 110         }
 111
 112         /**
 113          * Run a series of tests listed in the given text file.
 114          * Each test consists of a brief description, wikitext input,
 115          * and the expected HTML output.
 116          *
 117          * Prints status updates on stdout and counts up the total
 118          * number and percentage of passed tests.
 119          *
 120          * @param string $filename
 121          * @return bool True if passed all tests, false if any tests failed.
 122          * @public
 123          */
 124         function runTestsFromFile( $filename ) {
 125                 $infile = fopen( $filename, 'rt' );
 126                 if( !$infile ) {
 127                         wfDie( "Couldn't open $filename\n" );
 128                 }
 129
 130                 $data = array();
 131                 $section = null;
 132                 $success = 0;
 133                 $total = 0;
 134                 $n = 0;
 135                 while( false !== ($line = fgets( $infile ) ) ) {
 136                         $n++;
 137                         if( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
 138                                 $section = strtolower( $matches[1] );
 139                                 if( $section == 'endarticle') {
 140                                         if( !isset( $data['text'] ) ) {
 141                                                 wfDie( "'endarticle' without 'text' at line $n\n" );
 142                                         }
 143                                         if( !isset( $data['article'] ) ) {
 144                                                 wfDie( "'endarticle' without 'article' at line $n\n" );
 145                                         }
 146                                         $this->addArticle($this->chomp($data['article']), $this->chomp($data['text']), $n);
 147                                         $data = array();
 148                                         $section = null;
 149                                         continue;
 150                                 }
 151                                 if( $section == 'endhooks' ) {
 152                                         if( !isset( $data['hooks'] ) ) {
 153                                                 wfDie( "'endhooks' without 'hooks' at line $n\n" );
 154                                         }
 155                                         foreach( explode( "\n", $data['hooks'] ) as $line ) {
 156                                                 $line = trim( $line );
 157                                                 if( $line ) {
 158                                                         $this->requireHook( $line );
 159                                                 }
 160                                         }
 161                                         $data = array();
 162                                         $section = null;
 163                                         continue;
 164                                 }
 165                                 if( $section == 'end' ) {
 166                                         if( !isset( $data['test'] ) ) {
 167                                                 wfDie( "'end' without 'test' at line $n\n" );
 168                                         }
 169                                         if( !isset( $data['input'] ) ) {
 170                                                 wfDie( "'end' without 'input' at line $n\n" );
 171                                         }
 172                                         if( !isset( $data['result'] ) ) {
 173                                                 wfDie( "'end' without 'result' at line $n\n" );
 174                                         }
 175                                         if( !isset( $data['options'] ) ) {
 176                                                 $data['options'] = '';
 177                                         }
 178                                         else {
 179                                                 $data['options'] = $this->chomp( $data['options'] );
 180                                         }
 181                                         if (preg_match('/\\bdisabled\\b/i', $data['options'])
 182                                                 || !preg_match("/{$this->regex}/i", $data['test'])) {
 183                                                 # disabled test
 184                                                 $data = array();
 185                                                 $section = null;
 186                                                 continue;
 187                                         }
 188                                         if( $this->runTest(
 189                                                 $this->chomp( $data['test'] ),
 190                                                 $this->chomp( $data['input'] ),
 191                                                 $this->chomp( $data['result'] ),
 192                                                 $this->chomp( $data['options'] ) ) ) {
 193                                                 $success++;
 194                                         }
 195                                         $total++;
 196                                         $data = array();
 197                                         $section = null;
 198                                         continue;
 199                                 }
 200                                 if ( isset ($data[$section] ) ) {
 201                                         wfDie( "duplicate section '$section' at line $n\n" );
 202                                 }
 203                                 $data[$section] = '';
 204                                 continue;
 205                         }
 206                         if( $section ) {
 207                                 $data[$section] .= $line;
 208                         }
 209                 }
 210                 if( $total > 0 ) {
 211                         $ratio = wfPercent( 100 * $success / $total );
 212                         print $this->termColor( 1 ) . "\nPassed $success of $total tests ($ratio) ";
 213                         if( $success == $total ) {
 214                                 print $this->termColor( 32 ) . "PASSED!";
 215                         } else {
 216                                 print $this->termColor( 31 ) . "FAILED!";
 217                         }
 218                         print $this->termReset() . "\n";
 219                         return ($success == $total);
 220                 } else {
 221                         wfDie( "No tests found.\n" );
 222                 }
 223         }
 224
 225         /**
 226          * Run a given wikitext input through a freshly-constructed wiki parser,
 227          * and compare the output against the expected results.
 228          * Prints status and explanatory messages to stdout.
 229          *
 230          * @param string $input Wikitext to try rendering
 231          * @param string $result Result to output
 232          * @return bool
 233          */
 234         function runTest( $desc, $input, $result, $opts ) {
 235                 if( !$this->quiet ) {
 236                         $this->showTesting( $desc );
 237                 }
 238
 239                 $this->setupGlobals($opts);
 240
 241                 $user = new User();
 242                 $options = ParserOptions::newFromUser( $user );
 243
 244                 if (preg_match('/\\bmath\\b/i', $opts)) {
 245                         # XXX this should probably be done by the ParserOptions
 246                         $options->setUseTex(true);
 247                 }
 248
 249                 if (preg_match('/title=\[\[(.*)\]\]/', $opts, $m)) {
 250                         $titleText = $m[1];
 251                 }
 252                 else {
 253                         $titleText = 'Parser test';
 254                 }
 255
 256                 $noxml = (bool)preg_match( '~\\b noxml \\b~x', $opts );
 257
 258                 $parser = new Parser();
 259                 foreach( $this->hooks as $tag => $callback ) {
 260                         $parser->setHook( $tag, $callback );
 261                 }
 262                 wfRunHooks( 'ParserTestParser', array( &$parser ) );
 263
 264                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 265
 266                 if (preg_match('/\\bpst\\b/i', $opts)) {
 267                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 268                 } elseif (preg_match('/\\bmsg\\b/i', $opts)) {
 269                         $out = $parser->transformMsg( $input, $options );
 270                 } elseif( preg_match( '/\\bsection=(\d+)\b/i', $opts, $matches ) ) {
 271                         $section = intval( $matches[1] );
 272                         $out = $parser->getSection( $input, $section );
 273                 } elseif( preg_match( '/\\breplace=(\d+),"(.*?)"/i', $opts, $matches ) ) {
 274                         $section = intval( $matches[1] );
 275                         $replace = $matches[2];
 276                         $out = $parser->replaceSection( $input, $section, $replace );
 277                 } else {
 278                         $output = $parser->parse( $input, $title, $options, true, true, 1337 );
 279                         $out = $output->getText();
 280
 281                         if (preg_match('/\\bill\\b/i', $opts)) {
 282                                 $out = $this->tidy( implode( ' ', $output->getLanguageLinks() ) );
 283                         } else if (preg_match('/\\bcat\\b/i', $opts)) {
 284                                 global $wgOut;
 285                                 $wgOut->addCategoryLinks($output->getCategories());
 286                                 $out = $this->tidy ( implode( ' ', $wgOut->getCategoryLinks() ) );
 287                         }
 288
 289                         $result = $this->tidy($result);
 290                 }
 291
 292                 $this->teardownGlobals();
 293
 294                 if( $result === $out && ( $noxml === true || $this->wellFormed( $out ) ) ) {
 295                         return $this->showSuccess( $desc );
 296                 } else {
 297                         return $this->showFailure( $desc, $result, $out );
 298                 }
 299         }
 300
 301         /**
 302          * Set up the global variables for a consistent environment for each test.
 303          * Ideally this should replace the global configuration entirely.
 304          *
 305          * @private
 306          */
 307         function setupGlobals($opts = '') {
 308                 # Save the prefixed / quoted table names for later use when we make the temporaries.
 309                 $db =& wfGetDB( DB_READ );
 310                 $this->oldTableNames = array();
 311                 foreach( $this->listTables() as $table ) {
 312                         $this->oldTableNames[$table] = $db->tableName( $table );
 313                 }
 314                 if( !isset( $this->uploadDir ) ) {
 315                         $this->uploadDir = $this->setupUploadDir();
 316                 }
 317
 318                 if( preg_match( '/language=([a-z]+(?:_[a-z]+)?)/', $opts, $m ) ) {
 319                         $lang = $m[1];
 320                 } else {
 321                         $lang = 'en';
 322                 }
 323
 324                 $settings = array(
 325                         'wgServer' => 'http://localhost',
 326                         'wgScript' => '/index.php',
 327                         'wgScriptPath' => '/',
 328                         'wgArticlePath' => '/wiki/$1',
 329                         'wgActionPaths' => array(),
 330                         'wgUploadPath' => 'http://example.com/images',
 331                         'wgUploadDirectory' => $this->uploadDir,
 332                         'wgStyleSheetPath' => '/skins',
 333                         'wgSitename' => 'MediaWiki',
 334                         'wgServerName' => 'Britney Spears',
 335                         'wgLanguageCode' => $lang,
 336                         'wgContLanguageCode' => $lang,
 337                         'wgDBprefix' => 'parsertest_',
 338                         'wgDefaultUserOptions' => array(),
 339
 340                         'wgLang' => null,
 341                         'wgContLang' => null,
 342                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 343                         'wgMaxTocLevel' => 999,
 344                         'wgCapitalLinks' => true,
 345                         'wgDefaultUserOptions' => array(),
 346                         'wgNoFollowLinks' => true,
 347                         'wgThumbnailScriptPath' => false,
 348                         'wgUseTeX' => false,
 349                         'wgLocaltimezone' => 'UTC',
 350                         'wgAllowExternalImages' => true,
 351                         );
 352                 $this->savedGlobals = array();
 353                 foreach( $settings as $var => $val ) {
 354                         $this->savedGlobals[$var] = $GLOBALS[$var];
 355                         $GLOBALS[$var] = $val;
 356                 }
 357                 $langClass = 'Language' . str_replace( '-', '_', ucfirst( $lang ) );
 358                 $langObj = setupLangObj( $langClass );
 359                 $GLOBALS['wgLang'] = $langObj;
 360                 $GLOBALS['wgContLang'] = $langObj;
 361
 362                 $GLOBALS['wgLoadBalancer']->loadMasterPos();
 363                 //$GLOBALS['wgMessageCache'] = new MessageCache( new BagOStuff(), false, 0, $GLOBALS['wgDBname'] );
 364                 $this->setupDatabase();
 365
 366                 global $wgUser;
 367                 $wgUser = new User();
 368         }
 369
 370         # List of temporary tables to create, without prefix
 371         # Some of these probably aren't necessary
 372         function listTables() {
 373                 $tables = array('user', 'page', 'revision', 'text',
 374                         'pagelinks', 'imagelinks', 'categorylinks',
 375                         'templatelinks', 'externallinks', 'langlinks',
 376                         'site_stats', 'hitcounter',
 377                         'ipblocks', 'image', 'oldimage',
 378                         'recentchanges',
 379                         'watchlist', 'math', 'searchindex',
 380                         'interwiki', 'querycache',
 381                         'objectcache', 'job'
 382                 );
 383
 384                 // FIXME manually adding additional table for the tasks extension
 385                 // we probably need a better software wide system to register new
 386                 // tables.
 387                 global $wgExtensionFunctions;
 388                 if( in_array('wfTasksExtension' , $wgExtensionFunctions ) ) {
 389                         $tables[] = 'tasks';
 390                 }
 391
 392                 return $tables;
 393         }
 394
 395         /**
 396          * Set up a temporary set of wiki tables to work with for the tests.
 397          * Currently this will only be done once per run, and any changes to
 398          * the db will be visible to later tests in the run.
 399          *
 400          * @private
 401          */
 402         function setupDatabase() {
 403                 static $setupDB = false;
 404                 global $wgDBprefix;
 405
 406                 # Make sure we don't mess with the live DB
 407                 if (!$setupDB && $wgDBprefix === 'parsertest_') {
 408                         # oh teh horror
 409                         $GLOBALS['wgLoadBalancer'] = LoadBalancer::newFromParams( $GLOBALS['wgDBservers'] );
 410                         $db =& wfGetDB( DB_MASTER );
 411
 412                         $tables = $this->listTables();
 413
 414                         if (!(strcmp($db->getServerVersion(), '4.1') < 0 and stristr($db->getSoftwareLink(), 'MySQL'))) {
 415                                 # Database that supports CREATE TABLE ... LIKE
 416                                 global $wgDBtype;
 417                                 if( $wgDBtype == 'postgres' ) {
 418                                         $def = 'INCLUDING DEFAULTS';
 419                                 } else {
 420                                         $def = '';
 421                                 }
 422                                 foreach ($tables as $tbl) {
 423                                         $newTableName = $db->tableName( $tbl );
 424                                         $tableName = $this->oldTableNames[$tbl];
 425                                         $db->query("CREATE TEMPORARY TABLE $newTableName (LIKE $tableName $def)");
 426                                 }
 427                         } else {
 428                                 # Hack for MySQL versions < 4.1, which don't support
 429                                 # "CREATE TABLE ... LIKE". Note that
 430                                 # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 431                                 # would not create the indexes we need....
 432                                 foreach ($tables as $tbl) {
 433                                         $res = $db->query("SHOW CREATE TABLE {$this->oldTableNames[$tbl]}");
 434                                         $row = $db->fetchRow($res);
 435                                         $create = $row[1];
 436                                         $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/', 'CREATE TEMPORARY TABLE `'
 437                                                 . $wgDBprefix . $tbl .'`', $create);
 438                                         if ($create === $create_tmp) {
 439                                                 # Couldn't do replacement
 440                                                 wfDie("could not create temporary table $tbl");
 441                                         }
 442                                         $db->query($create_tmp);
 443                                 }
 444
 445                         }
 446
 447                         # Hack: insert a few Wikipedia in-project interwiki prefixes,
 448                         # for testing inter-language links
 449                         $db->insert( 'interwiki', array(
 450                                 array( 'iw_prefix' => 'Wikipedia',
 451                                        'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 452                                        'iw_local'  => 0 ),
 453                                 array( 'iw_prefix' => 'MeatBall',
 454                                        'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 455                                        'iw_local'  => 0 ),
 456                                 array( 'iw_prefix' => 'zh',
 457                                        'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 458                                        'iw_local'  => 1 ),
 459                                 array( 'iw_prefix' => 'es',
 460                                        'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 461                                        'iw_local'  => 1 ),
 462                                 array( 'iw_prefix' => 'fr',
 463                                        'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 464                                        'iw_local'  => 1 ),
 465                                 array( 'iw_prefix' => 'ru',
 466                                        'iw_url'    => 'http://ru.wikipedia.org/wiki/$1',
 467                                        'iw_local'  => 1 ),
 468                                 ) );
 469
 470                         # Hack: Insert an image to work with
 471                         $db->insert( 'image', array(
 472                                 'img_name'        => 'Foobar.jpg',
 473                                 'img_size'        => 12345,
 474                                 'img_description' => 'Some lame file',
 475                                 'img_user'        => 1,
 476                                 'img_user_text'   => 'WikiSysop',
 477                                 'img_timestamp'   => $db->timestamp( '20010115123500' ),
 478                                 'img_width'       => 1941,
 479                                 'img_height'      => 220,
 480                                 'img_bits'        => 24,
 481                                 'img_media_type'  => MEDIATYPE_BITMAP,
 482                                 'img_major_mime'  => "image",
 483                                 'img_minor_mime'  => "jpeg",
 484                                 ) );
 485
 486                         # Update certain things in site_stats
 487                         $db->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_images' => 1, 'ss_good_articles' => 1 ) );
 488
 489                         $setupDB = true;
 490                 }
 491         }
 492
 493         /**
 494          * Create a dummy uploads directory which will contain a couple
 495          * of files in order to pass existence tests.
 496          * @return string The directory
 497          * @private
 498          */
 499         function setupUploadDir() {
 500                 global $IP;
 501
 502                 $dir = wfTempDir() . "/mwParser-" . mt_rand() . "-images";
 503                 mkdir( $dir );
 504                 mkdir( $dir . '/3' );
 505                 mkdir( $dir . '/3/3a' );
 506
 507                 $img = "$IP/skins/monobook/headbg.jpg";
 508                 $h = fopen($img, 'r');
 509                 $c = fread($h, filesize($img));
 510                 fclose($h);
 511
 512                 $f = fopen( $dir . '/3/3a/Foobar.jpg', 'wb' );
 513                 fwrite( $f, $c );
 514                 fclose( $f );
 515                 return $dir;
 516         }
 517
 518         /**
 519          * Restore default values and perform any necessary clean-up
 520          * after each test runs.
 521          *
 522          * @private
 523          */
 524         function teardownGlobals() {
 525                 foreach( $this->savedGlobals as $var => $val ) {
 526                         $GLOBALS[$var] = $val;
 527                 }
 528                 if( isset( $this->uploadDir ) ) {
 529                         $this->teardownUploadDir( $this->uploadDir );
 530                         unset( $this->uploadDir );
 531                 }
 532         }
 533
 534         /**
 535          * Remove the dummy uploads directory
 536          * @private
 537          */
 538         function teardownUploadDir( $dir ) {
 539                 unlink( "$dir/3/3a/Foobar.jpg" );
 540                 rmdir( "$dir/3/3a" );
 541                 rmdir( "$dir/3" );
 542                 @rmdir( "$dir/thumb/6/65" );
 543                 @rmdir( "$dir/thumb/6" );
 544
 545                 @unlink( "$dir/thumb/3/3a/Foobar.jpg/180px-Foobar.jpg" );
 546                 @rmdir( "$dir/thumb/3/3a/Foobar.jpg" );
 547                 @rmdir( "$dir/thumb/3/3a" );
 548                 @rmdir( "$dir/thumb/3/39" ); # wtf?
 549                 @rmdir( "$dir/thumb/3" );
 550                 @rmdir( "$dir/thumb" );
 551                 @rmdir( "$dir" );
 552         }
 553
 554         /**
 555          * "Running test $desc..."
 556          * @private
 557          */
 558         function showTesting( $desc ) {
 559                 print "Running test $desc... ";
 560         }
 561
 562         /**
 563          * Print a happy success message.
 564          *
 565          * @param string $desc The test name
 566          * @return bool
 567          * @private
 568          */
 569         function showSuccess( $desc ) {
 570                 if( !$this->quiet ) {
 571                         print $this->termColor( '1;32' ) . 'PASSED' . $this->termReset() . "\n";
 572                 }
 573                 return true;
 574         }
 575
 576         /**
 577          * Print a failure message and provide some explanatory output
 578          * about what went wrong if so configured.
 579          *
 580          * @param string $desc The test name
 581          * @param string $result Expected HTML output
 582          * @param string $html Actual HTML output
 583          * @return bool
 584          * @private
 585          */
 586         function showFailure( $desc, $result, $html ) {
 587                 if( $this->quiet ) {
 588                         # In quiet mode we didn't show the 'Testing' message before the
 589                         # test, in case it succeeded. Show it now:
 590                         $this->showTesting( $desc );
 591                 }
 592                 print $this->termColor( '1;31' ) . 'FAILED!' . $this->termReset() . "\n";
 593                 if( $this->showDiffs ) {
 594                         print $this->quickDiff( $result, $html );
 595                         if( !$this->wellFormed( $html ) ) {
 596                                 print "XML error: $this->mXmlError\n";
 597                         }
 598                 }
 599                 return false;
 600         }
 601
 602         /**
 603          * Run given strings through a diff and return the (colorized) output.
 604          * Requires writable /tmp directory and a 'diff' command in the PATH.
 605          *
 606          * @param string $input
 607          * @param string $output
 608          * @param string $inFileTail Tailing for the input file name
 609          * @param string $outFileTail Tailing for the output file name
 610          * @return string
 611          * @private
 612          */
 613         function quickDiff( $input, $output, $inFileTail='expected', $outFileTail='actual' ) {
 614                 $prefix = wfTempDir() . "/mwParser-" . mt_rand();
 615
 616                 $infile = "$prefix-$inFileTail";
 617                 $this->dumpToFile( $input, $infile );
 618
 619                 $outfile = "$prefix-$outFileTail";
 620                 $this->dumpToFile( $output, $outfile );
 621
 622                 $diff = `diff -au $infile $outfile`;
 623                 unlink( $infile );
 624                 unlink( $outfile );
 625
 626                 return $this->colorDiff( $diff );
 627         }
 628
 629         /**
 630          * Write the given string to a file, adding a final newline.
 631          *
 632          * @param string $data
 633          * @param string $filename
 634          * @private
 635          */
 636         function dumpToFile( $data, $filename ) {
 637                 $file = fopen( $filename, "wt" );
 638                 fwrite( $file, $data . "\n" );
 639                 fclose( $file );
 640         }
 641
 642         /**
 643          * Return ANSI terminal escape code for changing text attribs/color,
 644          * or empty string if color output is disabled.
 645          *
 646          * @param string $color Semicolon-separated list of attribute/color codes
 647          * @return string
 648          * @private
 649          */
 650         function termColor( $color ) {
 651                 if($this->lightcolor) {
 652                         return $this->color ? "\x1b[1;{$color}m" : '';
 653                 } else {
 654                         return $this->color ? "\x1b[{$color}m" : '';
 655                 }
 656         }
 657
 658         /**
 659          * Return ANSI terminal escape code for restoring default text attributes,
 660          * or empty string if color output is disabled.
 661          *
 662          * @return string
 663          * @private
 664          */
 665         function termReset() {
 666                 return $this->color ? "\x1b[0m" : '';
 667         }
 668
 669         /**
 670          * Colorize unified diff output if set for ANSI color output.
 671          * Subtractions are colored blue, additions red.
 672          *
 673          * @param string $text
 674          * @return string
 675          * @private
 676          */
 677         function colorDiff( $text ) {
 678                 return preg_replace(
 679                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 680                         array( $this->termColor( 34 ) . '$1' . $this->termReset(),
 681                                $this->termColor( 31 ) . '$1' . $this->termReset() ),
 682                         $text );
 683         }
 684
 685         /**
 686          * Insert a temporary test article
 687          * @param string $name the title, including any prefix
 688          * @param string $text the article text
 689          * @param int $line the input line number, for reporting errors
 690          * @private
 691          */
 692         function addArticle($name, $text, $line) {
 693                 $this->setupGlobals();
 694                 $title = Title::newFromText( $name );
 695                 if ( is_null($title) ) {
 696                         wfDie( "invalid title at line $line\n" );
 697                 }
 698
 699                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
 700                 if ($aid != 0) {
 701                         wfDie( "duplicate article at line $line\n" );
 702                 }
 703
 704                 $art = new Article($title);
 705                 $art->insertNewArticle($text, '', false, false );
 706                 $this->teardownGlobals();
 707         }
 708
 709         /**
 710          * Steal a callback function from the primary parser, save it for
 711          * application to our scary parser. If the hook is not installed,
 712          * die a painful dead to warn the others.
 713          * @param string $name
 714          */
 715         private function requireHook( $name ) {
 716                 global $wgParser;
 717                 if( isset( $wgParser->mTagHooks[$name] ) ) {
 718                         $this->hooks[$name] = $wgParser->mTagHooks[$name];
 719                 } else {
 720                         wfDie( "This test suite requires the '$name' hook extension.\n" );
 721                 }
 722         }
 723
 724         /*
 725          * Run the "tidy" command on text if the $wgUseTidy
 726          * global is true
 727          *
 728          * @param string $text the text to tidy
 729          * @return string
 730          * @static
 731          * @private
 732          */
 733         function tidy( $text ) {
 734                 global $wgUseTidy;
 735                 if ($wgUseTidy) {
 736                         $text = Parser::tidy($text);
 737                 }
 738                 return $text;
 739         }
 740
 741         function wellFormed( $text ) {
 742                 $html =
 743                         Sanitizer::hackDocType() .
 744                         '<html>' .
 745                         $text .
 746                         '</html>';
 747
 748                 $parser = xml_parser_create( "UTF-8" );
 749
 750                 # case folding violates XML standard, turn it off
 751                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 752
 753                 if( !xml_parse( $parser, $html, true ) ) {
 754                         $err = xml_error_string( xml_get_error_code( $parser ) );
 755                         $position = xml_get_current_byte_index( $parser );
 756                         $fragment = $this->extractFragment( $html, $position );
 757                         $this->mXmlError = "$err at byte $position:\n$fragment";
 758                         xml_parser_free( $parser );
 759                         return false;
 760                 }
 761                 xml_parser_free( $parser );
 762                 return true;
 763         }
 764
 765         function extractFragment( $text, $position ) {
 766                 $start = max( 0, $position - 10 );
 767                 $before = $position - $start;
 768                 $fragment = '...' .
 769                         $this->termColor( 34 ) .
 770                         substr( $text, $start, $before ) .
 771                         $this->termColor( 0 ) .
 772                         $this->termColor( 31 ) .
 773                         $this->termColor( 1 ) .
 774                         substr( $text, $position, 1 ) .
 775                         $this->termColor( 0 ) .
 776                         $this->termColor( 34 ) .
 777                         substr( $text, $position + 1, 9 ) .
 778                         $this->termColor( 0 ) .
 779                         '...';
 780                 $display = str_replace( "\n", ' ', $fragment );
 781                 $caret = '   ' .
 782                         str_repeat( ' ', $before ) .
 783                         $this->termColor( 31 ) .
 784                         '^' .
 785                         $this->termColor( 0 );
 786                 return "$display\n$caret";
 787         }
 788
 789 }
 790
 791 ?>