tests/parser/ParserTestRunner.php

   1 <?php
   2 /**
   3  * Generic backend for the MediaWiki parser test suite, used by both the
   4  * standalone parserTests.php and the PHPUnit "parsertests" suite.
   5  *
   6  * Copyright © 2004, 2010 Brion Vibber <brion@pobox.com>
   7  * https://www.mediawiki.org/
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @todo Make this more independent of the configuration (and if possible the database)
  25  * @file
  26  * @ingroup Testing
  27  */
  28 use Wikimedia\Rdbms\IDatabase;
  29 use MediaWiki\MediaWikiServices;
  30 use Wikimedia\ScopedCallback;
  31 use Wikimedia\TestingAccessWrapper;
  32
  33 /**
  34  * @ingroup Testing
  35  */
  36 class ParserTestRunner {
  37
  38         /**
  39          * MediaWiki core parser test files, paths
  40          * will be prefixed with __DIR__ . '/'
  41          *
  42          * @var array
  43          */
  44         private static $coreTestFiles = [
  45                 'parserTests.txt',
  46                 'extraParserTests.txt',
  47         ];
  48
  49         /**
  50          * @var bool $useTemporaryTables Use temporary tables for the temporary database
  51          */
  52         private $useTemporaryTables = true;
  53
  54         /**
  55          * @var array $setupDone The status of each setup function
  56          */
  57         private $setupDone = [
  58                 'staticSetup' => false,
  59                 'perTestSetup' => false,
  60                 'setupDatabase' => false,
  61                 'setDatabase' => false,
  62                 'setupUploads' => false,
  63         ];
  64
  65         /**
  66          * Our connection to the database
  67          * @var Database
  68          */
  69         private $db;
  70
  71         /**
  72          * Database clone helper
  73          * @var CloneDatabase
  74          */
  75         private $dbClone;
  76
  77         /**
  78          * @var TidySupport
  79          */
  80         private $tidySupport;
  81
  82         /**
  83          * @var TidyDriverBase
  84          */
  85         private $tidyDriver = null;
  86
  87         /**
  88          * @var TestRecorder
  89          */
  90         private $recorder;
  91
  92         /**
  93          * The upload directory, or null to not set up an upload directory
  94          *
  95          * @var string|null
  96          */
  97         private $uploadDir = null;
  98
  99         /**
 100          * The name of the file backend to use, or null to use MockFileBackend.
 101          * @var string|null
 102          */
 103         private $fileBackendName;
 104
 105         /**
 106          * A complete regex for filtering tests.
 107          * @var string
 108          */
 109         private $regex;
 110
 111         /**
 112          * A list of normalization functions to apply to the expected and actual
 113          * output.
 114          * @var array
 115          */
 116         private $normalizationFunctions = [];
 117
 118         /**
 119          * @param TestRecorder $recorder
 120          * @param array $options
 121          */
 122         public function __construct( TestRecorder $recorder, $options = [] ) {
 123                 $this->recorder = $recorder;
 124
 125                 if ( isset( $options['norm'] ) ) {
 126                         foreach ( $options['norm'] as $func ) {
 127                                 if ( in_array( $func, [ 'removeTbody', 'trimWhitespace' ] ) ) {
 128                                         $this->normalizationFunctions[] = $func;
 129                                 } else {
 130                                         $this->recorder->warning(
 131                                                 "Warning: unknown normalization option \"$func\"\n" );
 132                                 }
 133                         }
 134                 }
 135
 136                 if ( isset( $options['regex'] ) && $options['regex'] !== false ) {
 137                         $this->regex = $options['regex'];
 138                 } else {
 139                         # Matches anything
 140                         $this->regex = '//';
 141                 }
 142
 143                 $this->keepUploads = !empty( $options['keep-uploads'] );
 144
 145                 $this->fileBackendName = isset( $options['file-backend'] ) ?
 146                         $options['file-backend'] : false;
 147
 148                 $this->runDisabled = !empty( $options['run-disabled'] );
 149                 $this->runParsoid = !empty( $options['run-parsoid'] );
 150
 151                 $this->tidySupport = new TidySupport( !empty( $options['use-tidy-config'] ) );
 152                 if ( !$this->tidySupport->isEnabled() ) {
 153                         $this->recorder->warning(
 154                                 "Warning: tidy is not installed, skipping some tests\n" );
 155                 }
 156
 157                 if ( isset( $options['upload-dir'] ) ) {
 158                         $this->uploadDir = $options['upload-dir'];
 159                 }
 160         }
 161
 162         /**
 163          * Get list of filenames to extension and core parser tests
 164          *
 165          * @return array
 166          */
 167         public static function getParserTestFiles() {
 168                 global $wgParserTestFiles;
 169
 170                 // Add core test files
 171                 $files = array_map( function ( $item ) {
 172                         return __DIR__ . "/$item";
 173                 }, self::$coreTestFiles );
 174
 175                 // Plus legacy global files
 176                 $files = array_merge( $files, $wgParserTestFiles );
 177
 178                 // Auto-discover extension parser tests
 179                 $registry = ExtensionRegistry::getInstance();
 180                 foreach ( $registry->getAllThings() as $info ) {
 181                         $dir = dirname( $info['path'] ) . '/tests/parser';
 182                         if ( !file_exists( $dir ) ) {
 183                                 continue;
 184                         }
 185                         $counter = 1;
 186                         $dirIterator = new RecursiveIteratorIterator(
 187                                 new RecursiveDirectoryIterator( $dir )
 188                         );
 189                         foreach ( $dirIterator as $fileInfo ) {
 190                                 /** @var SplFileInfo $fileInfo */
 191                                 if ( substr( $fileInfo->getFilename(), -4 ) === '.txt' ) {
 192                                         $name = $info['name'] . $counter;
 193                                         while ( isset( $files[$name] ) ) {
 194                                                 $name = $info['name'] . '_' . $counter++;
 195                                         }
 196                                         $files[$name] = $fileInfo->getPathname();
 197                                 }
 198                         }
 199                 }
 200
 201                 return array_unique( $files );
 202         }
 203
 204         public function getRecorder() {
 205                 return $this->recorder;
 206         }
 207
 208         /**
 209          * Do any setup which can be done once for all tests, independent of test
 210          * options, except for database setup.
 211          *
 212          * Public setup functions in this class return a ScopedCallback object. When
 213          * this object is destroyed by going out of scope, teardown of the
 214          * corresponding test setup is performed.
 215          *
 216          * Teardown objects may be chained by passing a ScopedCallback from a
 217          * previous setup stage as the $nextTeardown parameter. This enforces the
 218          * convention that teardown actions are taken in reverse order to the
 219          * corresponding setup actions. When $nextTeardown is specified, a
 220          * ScopedCallback will be returned which first tears down the current
 221          * setup stage, and then tears down the previous setup stage which was
 222          * specified by $nextTeardown.
 223          *
 224          * @param ScopedCallback|null $nextTeardown
 225          * @return ScopedCallback
 226          */
 227         public function staticSetup( $nextTeardown = null ) {
 228                 // A note on coding style:
 229
 230                 // The general idea here is to keep setup code together with
 231                 // corresponding teardown code, in a fine-grained manner. We have two
 232                 // arrays: $setup and $teardown. The code snippets in the $setup array
 233                 // are executed at the end of the method, before it returns, and the
 234                 // code snippets in the $teardown array are executed in reverse order
 235                 // when the Wikimedia\ScopedCallback object is consumed.
 236
 237                 // Because it is a common operation to save, set and restore global
 238                 // variables, we have an additional convention: when the array key of
 239                 // $setup is a string, the string is taken to be the name of the global
 240                 // variable, and the element value is taken to be the desired new value.
 241
 242                 // It's acceptable to just do the setup immediately, instead of adding
 243                 // a closure to $setup, except when the setup action depends on global
 244                 // variable initialisation being done first. In this case, you have to
 245                 // append a closure to $setup after the global variable is appended.
 246
 247                 // When you add to setup functions in this class, please keep associated
 248                 // setup and teardown actions together in the source code, and please
 249                 // add comments explaining why the setup action is necessary.
 250
 251                 $setup = [];
 252                 $teardown = [];
 253
 254                 $teardown[] = $this->markSetupDone( 'staticSetup' );
 255
 256                 // Some settings which influence HTML output
 257                 $setup['wgSitename'] = 'MediaWiki';
 258                 $setup['wgServer'] = 'http://example.org';
 259                 $setup['wgServerName'] = 'example.org';
 260                 $setup['wgScriptPath'] = '';
 261                 $setup['wgScript'] = '/index.php';
 262                 $setup['wgResourceBasePath'] = '';
 263                 $setup['wgStylePath'] = '/skins';
 264                 $setup['wgExtensionAssetsPath'] = '/extensions';
 265                 $setup['wgArticlePath'] = '/wiki/$1';
 266                 $setup['wgActionPaths'] = [];
 267                 $setup['wgVariantArticlePath'] = false;
 268                 $setup['wgUploadNavigationUrl'] = false;
 269                 $setup['wgCapitalLinks'] = true;
 270                 $setup['wgNoFollowLinks'] = true;
 271                 $setup['wgNoFollowDomainExceptions'] = [ 'no-nofollow.org' ];
 272                 $setup['wgExternalLinkTarget'] = false;
 273                 $setup['wgExperimentalHtmlIds'] = false;
 274                 $setup['wgLocaltimezone'] = 'UTC';
 275                 $setup['wgHtml5'] = true;
 276                 $setup['wgDisableLangConversion'] = false;
 277                 $setup['wgDisableTitleConversion'] = false;
 278
 279                 // "extra language links"
 280                 // see https://gerrit.wikimedia.org/r/111390
 281                 $setup['wgExtraInterlanguageLinkPrefixes'] = [ 'mul' ];
 282
 283                 // All FileRepo changes should be done here by injecting services,
 284                 // there should be no need to change global variables.
 285                 RepoGroup::setSingleton( $this->createRepoGroup() );
 286                 $teardown[] = function () {
 287                         RepoGroup::destroySingleton();
 288                 };
 289
 290                 // Set up null lock managers
 291                 $setup['wgLockManagers'] = [ [
 292                         'name' => 'fsLockManager',
 293                         'class' => NullLockManager::class,
 294                 ], [
 295                         'name' => 'nullLockManager',
 296                         'class' => NullLockManager::class,
 297                 ] ];
 298                 $reset = function () {
 299                         LockManagerGroup::destroySingletons();
 300                 };
 301                 $setup[] = $reset;
 302                 $teardown[] = $reset;
 303
 304                 // This allows article insertion into the prefixed DB
 305                 $setup['wgDefaultExternalStore'] = false;
 306
 307                 // This might slightly reduce memory usage
 308                 $setup['wgAdaptiveMessageCache'] = true;
 309
 310                 // This is essential and overrides disabling of database messages in TestSetup
 311                 $setup['wgUseDatabaseMessages'] = true;
 312                 $reset = function () {
 313                         MessageCache::destroyInstance();
 314                 };
 315                 $setup[] = $reset;
 316                 $teardown[] = $reset;
 317
 318                 // It's not necessary to actually convert any files
 319                 $setup['wgSVGConverter'] = 'null';
 320                 $setup['wgSVGConverters'] = [ 'null' => 'echo "1">$output' ];
 321
 322                 // Fake constant timestamp
 323                 Hooks::register( 'ParserGetVariableValueTs', function ( &$parser, &$ts ) {
 324                         $ts = $this->getFakeTimestamp();
 325                         return true;
 326                 } );
 327                 $teardown[] = function () {
 328                         Hooks::clear( 'ParserGetVariableValueTs' );
 329                 };
 330
 331                 $this->appendNamespaceSetup( $setup, $teardown );
 332
 333                 // Set up interwikis and append teardown function
 334                 $teardown[] = $this->setupInterwikis();
 335
 336                 // This affects title normalization in links. It invalidates
 337                 // MediaWikiTitleCodec objects.
 338                 $setup['wgLocalInterwikis'] = [ 'local', 'mi' ];
 339                 $reset = function () {
 340                         $this->resetTitleServices();
 341                 };
 342                 $setup[] = $reset;
 343                 $teardown[] = $reset;
 344
 345                 // Set up a mock MediaHandlerFactory
 346                 MediaWikiServices::getInstance()->disableService( 'MediaHandlerFactory' );
 347                 MediaWikiServices::getInstance()->redefineService(
 348                         'MediaHandlerFactory',
 349                         function ( MediaWikiServices $services ) {
 350                                 $handlers = $services->getMainConfig()->get( 'ParserTestMediaHandlers' );
 351                                 return new MediaHandlerFactory( $handlers );
 352                         }
 353                 );
 354                 $teardown[] = function () {
 355                         MediaWikiServices::getInstance()->resetServiceForTesting( 'MediaHandlerFactory' );
 356                 };
 357
 358                 // SqlBagOStuff broke when using temporary tables on r40209 (T17892).
 359                 // It seems to have been fixed since (r55079?), but regressed at some point before r85701.
 360                 // This works around it for now...
 361                 global $wgObjectCaches;
 362                 $setup['wgObjectCaches'] = [ CACHE_DB => $wgObjectCaches['hash'] ] + $wgObjectCaches;
 363                 if ( isset( ObjectCache::$instances[CACHE_DB] ) ) {
 364                         $savedCache = ObjectCache::$instances[CACHE_DB];
 365                         ObjectCache::$instances[CACHE_DB] = new HashBagOStuff;
 366                         $teardown[] = function () use ( $savedCache ) {
 367                                 ObjectCache::$instances[CACHE_DB] = $savedCache;
 368                         };
 369                 }
 370
 371                 $teardown[] = $this->executeSetupSnippets( $setup );
 372
 373                 // Schedule teardown snippets in reverse order
 374                 return $this->createTeardownObject( $teardown, $nextTeardown );
 375         }
 376
 377         private function appendNamespaceSetup( &$setup, &$teardown ) {
 378                 // Add a namespace shadowing a interwiki link, to test
 379                 // proper precedence when resolving links. (T53680)
 380                 $setup['wgExtraNamespaces'] = [
 381                         100 => 'MemoryAlpha',
 382                         101 => 'MemoryAlpha_talk'
 383                 ];
 384                 // Changing wgExtraNamespaces invalidates caches in MWNamespace and
 385                 // any live Language object, both on setup and teardown
 386                 $reset = function () {
 387                         MWNamespace::clearCaches();
 388                         $GLOBALS['wgContLang']->resetNamespaces();
 389                 };
 390                 $setup[] = $reset;
 391                 $teardown[] = $reset;
 392         }
 393
 394         /**
 395          * Create a RepoGroup object appropriate for the current configuration
 396          * @return RepoGroup
 397          */
 398         protected function createRepoGroup() {
 399                 if ( $this->uploadDir ) {
 400                         if ( $this->fileBackendName ) {
 401                                 throw new MWException( 'You cannot specify both use-filebackend and upload-dir' );
 402                         }
 403                         $backend = new FSFileBackend( [
 404                                 'name' => 'local-backend',
 405                                 'wikiId' => wfWikiID(),
 406                                 'basePath' => $this->uploadDir,
 407                                 'tmpDirectory' => wfTempDir()
 408                         ] );
 409                 } elseif ( $this->fileBackendName ) {
 410                         global $wgFileBackends;
 411                         $name = $this->fileBackendName;
 412                         $useConfig = false;
 413                         foreach ( $wgFileBackends as $conf ) {
 414                                 if ( $conf['name'] === $name ) {
 415                                         $useConfig = $conf;
 416                                 }
 417                         }
 418                         if ( $useConfig === false ) {
 419                                 throw new MWException( "Unable to find file backend \"$name\"" );
 420                         }
 421                         $useConfig['name'] = 'local-backend'; // swap name
 422                         unset( $useConfig['lockManager'] );
 423                         unset( $useConfig['fileJournal'] );
 424                         $class = $useConfig['class'];
 425                         $backend = new $class( $useConfig );
 426                 } else {
 427                         # Replace with a mock. We do not care about generating real
 428                         # files on the filesystem, just need to expose the file
 429                         # informations.
 430                         $backend = new MockFileBackend( [
 431                                 'name' => 'local-backend',
 432                                 'wikiId' => wfWikiID()
 433                         ] );
 434                 }
 435
 436                 return new RepoGroup(
 437                         [
 438                                 'class' => MockLocalRepo::class,
 439                                 'name' => 'local',
 440                                 'url' => 'http://example.com/images',
 441                                 'hashLevels' => 2,
 442                                 'transformVia404' => false,
 443                                 'backend' => $backend
 444                         ],
 445                         []
 446                 );
 447         }
 448
 449         /**
 450          * Execute an array in which elements with integer keys are taken to be
 451          * callable objects, and other elements are taken to be global variable
 452          * set operations, with the key giving the variable name and the value
 453          * giving the new global variable value. A closure is returned which, when
 454          * executed, sets the global variables back to the values they had before
 455          * this function was called.
 456          *
 457          * @see staticSetup
 458          *
 459          * @param array $setup
 460          * @return closure
 461          */
 462         protected function executeSetupSnippets( $setup ) {
 463                 $saved = [];
 464                 foreach ( $setup as $name => $value ) {
 465                         if ( is_int( $name ) ) {
 466                                 $value();
 467                         } else {
 468                                 $saved[$name] = isset( $GLOBALS[$name] ) ? $GLOBALS[$name] : null;
 469                                 $GLOBALS[$name] = $value;
 470                         }
 471                 }
 472                 return function () use ( $saved ) {
 473                         $this->executeSetupSnippets( $saved );
 474                 };
 475         }
 476
 477         /**
 478          * Take a setup array in the same format as the one given to
 479          * executeSetupSnippets(), and return a ScopedCallback which, when consumed,
 480          * executes the snippets in the setup array in reverse order. This is used
 481          * to create "teardown objects" for the public API.
 482          *
 483          * @see staticSetup
 484          *
 485          * @param array $teardown The snippet array
 486          * @param ScopedCallback|null $nextTeardown A ScopedCallback to consume
 487          * @return ScopedCallback
 488          */
 489         protected function createTeardownObject( $teardown, $nextTeardown = null ) {
 490                 return new ScopedCallback( function () use ( $teardown, $nextTeardown ) {
 491                         // Schedule teardown snippets in reverse order
 492                         $teardown = array_reverse( $teardown );
 493
 494                         $this->executeSetupSnippets( $teardown );
 495                         if ( $nextTeardown ) {
 496                                 ScopedCallback::consume( $nextTeardown );
 497                         }
 498                 } );
 499         }
 500
 501         /**
 502          * Set a setupDone flag to indicate that setup has been done, and return
 503          * the teardown closure. If the flag was already set, throw an exception.
 504          *
 505          * @param string $funcName The setup function name
 506          * @return closure
 507          */
 508         protected function markSetupDone( $funcName ) {
 509                 if ( $this->setupDone[$funcName] ) {
 510                         throw new MWException( "$funcName is already done" );
 511                 }
 512                 $this->setupDone[$funcName] = true;
 513                 return function () use ( $funcName ) {
 514                         $this->setupDone[$funcName] = false;
 515                 };
 516         }
 517
 518         /**
 519          * Ensure a given setup stage has been done, throw an exception if it has
 520          * not.
 521          * @param string $funcName
 522          * @param string|null $funcName2
 523          */
 524         protected function checkSetupDone( $funcName, $funcName2 = null ) {
 525                 if ( !$this->setupDone[$funcName]
 526                         && ( $funcName === null || !$this->setupDone[$funcName2] )
 527                 ) {
 528                         throw new MWException( "$funcName must be called before calling " .
 529                                 wfGetCaller() );
 530                 }
 531         }
 532
 533         /**
 534          * Determine whether a particular setup function has been run
 535          *
 536          * @param string $funcName
 537          * @return bool
 538          */
 539         public function isSetupDone( $funcName ) {
 540                 return isset( $this->setupDone[$funcName] ) ? $this->setupDone[$funcName] : false;
 541         }
 542
 543         /**
 544          * Insert hardcoded interwiki in the lookup table.
 545          *
 546          * This function insert a set of well known interwikis that are used in
 547          * the parser tests. They can be considered has fixtures are injected in
 548          * the interwiki cache by using the 'InterwikiLoadPrefix' hook.
 549          * Since we are not interested in looking up interwikis in the database,
 550          * the hook completely replace the existing mechanism (hook returns false).
 551          *
 552          * @return closure for teardown
 553          */
 554         private function setupInterwikis() {
 555                 # Hack: insert a few Wikipedia in-project interwiki prefixes,
 556                 # for testing inter-language links
 557                 Hooks::register( 'InterwikiLoadPrefix', function ( $prefix, &$iwData ) {
 558                         static $testInterwikis = [
 559                                 'local' => [
 560                                         'iw_url' => 'http://doesnt.matter.org/$1',
 561                                         'iw_api' => '',
 562                                         'iw_wikiid' => '',
 563                                         'iw_local' => 0 ],
 564                                 'wikipedia' => [
 565                                         'iw_url' => 'http://en.wikipedia.org/wiki/$1',
 566                                         'iw_api' => '',
 567                                         'iw_wikiid' => '',
 568                                         'iw_local' => 0 ],
 569                                 'meatball' => [
 570                                         'iw_url' => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 571                                         'iw_api' => '',
 572                                         'iw_wikiid' => '',
 573                                         'iw_local' => 0 ],
 574                                 'memoryalpha' => [
 575                                         'iw_url' => 'http://www.memory-alpha.org/en/index.php/$1',
 576                                         'iw_api' => '',
 577                                         'iw_wikiid' => '',
 578                                         'iw_local' => 0 ],
 579                                 'zh' => [
 580                                         'iw_url' => 'http://zh.wikipedia.org/wiki/$1',
 581                                         'iw_api' => '',
 582                                         'iw_wikiid' => '',
 583                                         'iw_local' => 1 ],
 584                                 'es' => [
 585                                         'iw_url' => 'http://es.wikipedia.org/wiki/$1',
 586                                         'iw_api' => '',
 587                                         'iw_wikiid' => '',
 588                                         'iw_local' => 1 ],
 589                                 'fr' => [
 590                                         'iw_url' => 'http://fr.wikipedia.org/wiki/$1',
 591                                         'iw_api' => '',
 592                                         'iw_wikiid' => '',
 593                                         'iw_local' => 1 ],
 594                                 'ru' => [
 595                                         'iw_url' => 'http://ru.wikipedia.org/wiki/$1',
 596                                         'iw_api' => '',
 597                                         'iw_wikiid' => '',
 598                                         'iw_local' => 1 ],
 599                                 'mi' => [
 600                                         'iw_url' => 'http://mi.wikipedia.org/wiki/$1',
 601                                         'iw_api' => '',
 602                                         'iw_wikiid' => '',
 603                                         'iw_local' => 1 ],
 604                                 'mul' => [
 605                                         'iw_url' => 'http://wikisource.org/wiki/$1',
 606                                         'iw_api' => '',
 607                                         'iw_wikiid' => '',
 608                                         'iw_local' => 1 ],
 609                         ];
 610                         if ( array_key_exists( $prefix, $testInterwikis ) ) {
 611                                 $iwData = $testInterwikis[$prefix];
 612                         }
 613
 614                         // We only want to rely on the above fixtures
 615                         return false;
 616                 } );// hooks::register
 617
 618                 return function () {
 619                         // Tear down
 620                         Hooks::clear( 'InterwikiLoadPrefix' );
 621                 };
 622         }
 623
 624         /**
 625          * Reset the Title-related services that need resetting
 626          * for each test
 627          */
 628         private function resetTitleServices() {
 629                 $services = MediaWikiServices::getInstance();
 630                 $services->resetServiceForTesting( 'TitleFormatter' );
 631                 $services->resetServiceForTesting( 'TitleParser' );
 632                 $services->resetServiceForTesting( '_MediaWikiTitleCodec' );
 633                 $services->resetServiceForTesting( 'LinkRenderer' );
 634                 $services->resetServiceForTesting( 'LinkRendererFactory' );
 635         }
 636
 637         /**
 638          * Remove last character if it is a newline
 639          * @param string $s
 640          * @return string
 641          */
 642         public static function chomp( $s ) {
 643                 if ( substr( $s, -1 ) === "\n" ) {
 644                         return substr( $s, 0, -1 );
 645                 } else {
 646                         return $s;
 647                 }
 648         }
 649
 650         /**
 651          * Run a series of tests listed in the given text files.
 652          * Each test consists of a brief description, wikitext input,
 653          * and the expected HTML output.
 654          *
 655          * Prints status updates on stdout and counts up the total
 656          * number and percentage of passed tests.
 657          *
 658          * Handles all setup and teardown.
 659          *
 660          * @param array $filenames Array of strings
 661          * @return bool True if passed all tests, false if any tests failed.
 662          */
 663         public function runTestsFromFiles( $filenames ) {
 664                 $ok = false;
 665
 666                 $teardownGuard = $this->staticSetup();
 667                 $teardownGuard = $this->setupDatabase( $teardownGuard );
 668                 $teardownGuard = $this->setupUploads( $teardownGuard );
 669
 670                 $this->recorder->start();
 671                 try {
 672                         $ok = true;
 673
 674                         foreach ( $filenames as $filename ) {
 675                                 $testFileInfo = TestFileReader::read( $filename, [
 676                                         'runDisabled' => $this->runDisabled,
 677                                         'runParsoid' => $this->runParsoid,
 678                                         'regex' => $this->regex ] );
 679
 680                                 // Don't start the suite if there are no enabled tests in the file
 681                                 if ( !$testFileInfo['tests'] ) {
 682                                         continue;
 683                                 }
 684
 685                                 $this->recorder->startSuite( $filename );
 686                                 $ok = $this->runTests( $testFileInfo ) && $ok;
 687                                 $this->recorder->endSuite( $filename );
 688                         }
 689
 690                         $this->recorder->report();
 691                 } catch ( DBError $e ) {
 692                         $this->recorder->warning( $e->getMessage() );
 693                 }
 694                 $this->recorder->end();
 695
 696                 ScopedCallback::consume( $teardownGuard );
 697
 698                 return $ok;
 699         }
 700
 701         /**
 702          * Determine whether the current parser has the hooks registered in it
 703          * that are required by a file read by TestFileReader.
 704          * @param array $requirements
 705          * @return bool
 706          */
 707         public function meetsRequirements( $requirements ) {
 708                 foreach ( $requirements as $requirement ) {
 709                         switch ( $requirement['type'] ) {
 710                                 case 'hook':
 711                                         $ok = $this->requireHook( $requirement['name'] );
 712                                         break;
 713                                 case 'functionHook':
 714                                         $ok = $this->requireFunctionHook( $requirement['name'] );
 715                                         break;
 716                                 case 'transparentHook':
 717                                         $ok = $this->requireTransparentHook( $requirement['name'] );
 718                                         break;
 719                         }
 720                         if ( !$ok ) {
 721                                 return false;
 722                         }
 723                 }
 724                 return true;
 725         }
 726
 727         /**
 728          * Run the tests from a single file. staticSetup() and setupDatabase()
 729          * must have been called already.
 730          *
 731          * @param array $testFileInfo Parsed file info returned by TestFileReader
 732          * @return bool True if passed all tests, false if any tests failed.
 733          */
 734         public function runTests( $testFileInfo ) {
 735                 $ok = true;
 736
 737                 $this->checkSetupDone( 'staticSetup' );
 738
 739                 // Don't add articles from the file if there are no enabled tests from the file
 740                 if ( !$testFileInfo['tests'] ) {
 741                         return true;
 742                 }
 743
 744                 // If any requirements are not met, mark all tests from the file as skipped
 745                 if ( !$this->meetsRequirements( $testFileInfo['requirements'] ) ) {
 746                         foreach ( $testFileInfo['tests'] as $test ) {
 747                                 $this->recorder->startTest( $test );
 748                                 $this->recorder->skipped( $test, 'required extension not enabled' );
 749                         }
 750                         return true;
 751                 }
 752
 753                 // Add articles
 754                 $this->addArticles( $testFileInfo['articles'] );
 755
 756                 // Run tests
 757                 foreach ( $testFileInfo['tests'] as $test ) {
 758                         $this->recorder->startTest( $test );
 759                         $result =
 760                                 $this->runTest( $test );
 761                         if ( $result !== false ) {
 762                                 $ok = $ok && $result->isSuccess();
 763                                 $this->recorder->record( $test, $result );
 764                         }
 765                 }
 766
 767                 return $ok;
 768         }
 769
 770         /**
 771          * Get a Parser object
 772          *
 773          * @param string $preprocessor
 774          * @return Parser
 775          */
 776         function getParser( $preprocessor = null ) {
 777                 global $wgParserConf;
 778
 779                 $class = $wgParserConf['class'];
 780                 $parser = new $class( [ 'preprocessorClass' => $preprocessor ] + $wgParserConf );
 781                 ParserTestParserHook::setup( $parser );
 782
 783                 return $parser;
 784         }
 785
 786         /**
 787          * Run a given wikitext input through a freshly-constructed wiki parser,
 788          * and compare the output against the expected results.
 789          * Prints status and explanatory messages to stdout.
 790          *
 791          * staticSetup() and setupWikiData() must be called before this function
 792          * is entered.
 793          *
 794          * @param array $test The test parameters:
 795          *  - test: The test name
 796          *  - desc: The subtest description
 797          *  - input: Wikitext to try rendering
 798          *  - options: Array of test options
 799          *  - config: Overrides for global variables, one per line
 800          *
 801          * @return ParserTestResult or false if skipped
 802          */
 803         public function runTest( $test ) {
 804                 wfDebug( __METHOD__.": running {$test['desc']}" );
 805                 $opts = $this->parseOptions( $test['options'] );
 806                 $teardownGuard = $this->perTestSetup( $test );
 807
 808                 $context = RequestContext::getMain();
 809                 $user = $context->getUser();
 810                 $options = ParserOptions::newFromContext( $context );
 811                 $options->setTimestamp( $this->getFakeTimestamp() );
 812
 813                 if ( isset( $opts['tidy'] ) ) {
 814                         if ( !$this->tidySupport->isEnabled() ) {
 815                                 $this->recorder->skipped( $test, 'tidy extension is not installed' );
 816                                 return false;
 817                         } else {
 818                                 $options->setTidy( true );
 819                         }
 820                 }
 821
 822                 if ( isset( $opts['title'] ) ) {
 823                         $titleText = $opts['title'];
 824                 } else {
 825                         $titleText = 'Parser test';
 826                 }
 827
 828                 $local = isset( $opts['local'] );
 829                 $preprocessor = isset( $opts['preprocessor'] ) ? $opts['preprocessor'] : null;
 830                 $parser = $this->getParser( $preprocessor );
 831                 $title = Title::newFromText( $titleText );
 832
 833                 if ( isset( $opts['styletag'] ) ) {
 834                         // For testing the behavior of <style> (including those deduplicated
 835                         // into <link> tags), add tag hooks to allow them to be generated.
 836                         $parser->setHook( 'style', function ( $content, $attributes, $parser ) {
 837                                 $marker = Parser::MARKER_PREFIX . '-style-' . md5( $content ) . Parser::MARKER_SUFFIX;
 838                                 $parser->mStripState->addNoWiki( $marker, $content );
 839                                 return Html::inlineStyle( $marker, 'all', $attributes );
 840                         } );
 841                         $parser->setHook( 'link', function ( $content, $attributes, $parser ) {
 842                                 return Html::element( 'link', $attributes );
 843                         } );
 844                 }
 845
 846                 if ( isset( $opts['pst'] ) ) {
 847                         $out = $parser->preSaveTransform( $test['input'], $title, $user, $options );
 848                         $output = $parser->getOutput();
 849                 } elseif ( isset( $opts['msg'] ) ) {
 850                         $out = $parser->transformMsg( $test['input'], $options, $title );
 851                 } elseif ( isset( $opts['section'] ) ) {
 852                         $section = $opts['section'];
 853                         $out = $parser->getSection( $test['input'], $section );
 854                 } elseif ( isset( $opts['replace'] ) ) {
 855                         $section = $opts['replace'][0];
 856                         $replace = $opts['replace'][1];
 857                         $out = $parser->replaceSection( $test['input'], $section, $replace );
 858                 } elseif ( isset( $opts['comment'] ) ) {
 859                         $out = Linker::formatComment( $test['input'], $title, $local );
 860                 } elseif ( isset( $opts['preload'] ) ) {
 861                         $out = $parser->getPreloadText( $test['input'], $title, $options );
 862                 } else {
 863                         $output = $parser->parse( $test['input'], $title, $options, true, true, 1337 );
 864                         $out = $output->getText( [
 865                                 'allowTOC' => !isset( $opts['notoc'] ),
 866                                 'unwrap' => !isset( $opts['wrap'] ),
 867                         ] );
 868                         if ( isset( $opts['tidy'] ) ) {
 869                                 $out = preg_replace( '/\s+$/', '', $out );
 870                         }
 871
 872                         if ( isset( $opts['showtitle'] ) ) {
 873                                 if ( $output->getTitleText() ) {
 874                                         $title = $output->getTitleText();
 875                                 }
 876
 877                                 $out = "$title\n$out";
 878                         }
 879
 880                         if ( isset( $opts['showindicators'] ) ) {
 881                                 $indicators = '';
 882                                 foreach ( $output->getIndicators() as $id => $content ) {
 883                                         $indicators .= "$id=$content\n";
 884                                 }
 885                                 $out = $indicators . $out;
 886                         }
 887
 888                         if ( isset( $opts['ill'] ) ) {
 889                                 $out = implode( ' ', $output->getLanguageLinks() );
 890                         } elseif ( isset( $opts['cat'] ) ) {
 891                                 $out = '';
 892                                 foreach ( $output->getCategories() as $name => $sortkey ) {
 893                                         if ( $out !== '' ) {
 894                                                 $out .= "\n";
 895                                         }
 896                                         $out .= "cat=$name sort=$sortkey";
 897                                 }
 898                         }
 899                 }
 900
 901                 if ( isset( $output ) && isset( $opts['showflags'] ) ) {
 902                         $actualFlags = array_keys( TestingAccessWrapper::newFromObject( $output )->mFlags );
 903                         sort( $actualFlags );
 904                         $out .= "\nflags=" . implode( ', ', $actualFlags );
 905                 }
 906
 907                 ScopedCallback::consume( $teardownGuard );
 908
 909                 $expected = $test['result'];
 910                 if ( count( $this->normalizationFunctions ) ) {
 911                         $expected = ParserTestResultNormalizer::normalize(
 912                                 $test['expected'], $this->normalizationFunctions );
 913                         $out = ParserTestResultNormalizer::normalize( $out, $this->normalizationFunctions );
 914                 }
 915
 916                 $testResult = new ParserTestResult( $test, $expected, $out );
 917                 return $testResult;
 918         }
 919
 920         /**
 921          * Use a regex to find out the value of an option
 922          * @param string $key Name of option val to retrieve
 923          * @param array $opts Options array to look in
 924          * @param mixed $default Default value returned if not found
 925          * @return mixed
 926          */
 927         private static function getOptionValue( $key, $opts, $default ) {
 928                 $key = strtolower( $key );
 929
 930                 if ( isset( $opts[$key] ) ) {
 931                         return $opts[$key];
 932                 } else {
 933                         return $default;
 934                 }
 935         }
 936
 937         /**
 938          * Given the options string, return an associative array of options.
 939          * @todo Move this to TestFileReader
 940          *
 941          * @param string $instring
 942          * @return array
 943          */
 944         private function parseOptions( $instring ) {
 945                 $opts = [];
 946                 // foo
 947                 // foo=bar
 948                 // foo="bar baz"
 949                 // foo=[[bar baz]]
 950                 // foo=bar,"baz quux"
 951                 // foo={...json...}
 952                 $defs = '(?(DEFINE)
 953                         (?<qstr>                                        # Quoted string
 954                                 "
 955                                 (?:[^\\\\"] | \\\\.)*
 956                                 "
 957                         )
 958                         (?<json>
 959                                 \{              # Open bracket
 960                                 (?:
 961                                         [^"{}] |                                # Not a quoted string or object, or
 962                                         (?&qstr) |                              # A quoted string, or
 963                                         (?&json)                                # A json object (recursively)
 964                                 )*
 965                                 \}              # Close bracket
 966                         )
 967                         (?<value>
 968                                 (?:
 969                                         (?&qstr)                        # Quoted val
 970                                 |
 971                                         \[\[
 972                                                 [^]]*                   # Link target
 973                                         \]\]
 974                                 |
 975                                         [\w-]+                          # Plain word
 976                                 |
 977                                         (?&json)                        # JSON object
 978                                 )
 979                         )
 980                 )';
 981                 $regex = '/' . $defs . '\b
 982                         (?<k>[\w-]+)                            # Key
 983                         \b
 984                         (?:\s*
 985                                 =                                               # First sub-value
 986                                 \s*
 987                                 (?<v>
 988                                         (?&value)
 989                                         (?:\s*
 990                                                 ,                               # Sub-vals 1..N
 991                                                 \s*
 992                                                 (?&value)
 993                                         )*
 994                                 )
 995                         )?
 996                         /x';
 997                 $valueregex = '/' . $defs . '(?&value)/x';
 998
 999                 if ( preg_match_all( $regex, $instring, $matches, PREG_SET_ORDER ) ) {
1000                         foreach ( $matches as $bits ) {
1001                                 $key = strtolower( $bits['k'] );
1002                                 if ( !isset( $bits['v'] ) ) {
1003                                         $opts[$key] = true;
1004                                 } else {
1005                                         preg_match_all( $valueregex, $bits['v'], $vmatches );
1006                                         $opts[$key] = array_map( [ $this, 'cleanupOption' ], $vmatches[0] );
1007                                         if ( count( $opts[$key] ) == 1 ) {
1008                                                 $opts[$key] = $opts[$key][0];
1009                                         }
1010                                 }
1011                         }
1012                 }
1013                 return $opts;
1014         }
1015
1016         private function cleanupOption( $opt ) {
1017                 if ( substr( $opt, 0, 1 ) == '"' ) {
1018                         return stripcslashes( substr( $opt, 1, -1 ) );
1019                 }
1020
1021                 if ( substr( $opt, 0, 2 ) == '[[' ) {
1022                         return substr( $opt, 2, -2 );
1023                 }
1024
1025                 if ( substr( $opt, 0, 1 ) == '{' ) {
1026                         return FormatJson::decode( $opt, true );
1027                 }
1028                 return $opt;
1029         }
1030
1031         /**
1032          * Do any required setup which is dependent on test options.
1033          *
1034          * @see staticSetup() for more information about setup/teardown
1035          *
1036          * @param array $test Test info supplied by TestFileReader
1037          * @param callable|null $nextTeardown
1038          * @return ScopedCallback
1039          */
1040         public function perTestSetup( $test, $nextTeardown = null ) {
1041                 $teardown = [];
1042
1043                 $this->checkSetupDone( 'setupDatabase', 'setDatabase' );
1044                 $teardown[] = $this->markSetupDone( 'perTestSetup' );
1045
1046                 $opts = $this->parseOptions( $test['options'] );
1047                 $config = $test['config'];
1048
1049                 // Find out values for some special options.
1050                 $langCode =
1051                         self::getOptionValue( 'language', $opts, 'en' );
1052                 $variant =
1053                         self::getOptionValue( 'variant', $opts, false );
1054                 $maxtoclevel =
1055                         self::getOptionValue( 'wgMaxTocLevel', $opts, 999 );
1056                 $linkHolderBatchSize =
1057                         self::getOptionValue( 'wgLinkHolderBatchSize', $opts, 1000 );
1058
1059                 // Default to fallback skin, but allow it to be overridden
1060                 $skin = self::getOptionValue( 'skin', $opts, 'fallback' );
1061
1062                 $setup = [
1063                         'wgEnableUploads' => self::getOptionValue( 'wgEnableUploads', $opts, true ),
1064                         'wgLanguageCode' => $langCode,
1065                         'wgRawHtml' => self::getOptionValue( 'wgRawHtml', $opts, false ),
1066                         'wgNamespacesWithSubpages' => array_fill_keys(
1067                                 MWNamespace::getValidNamespaces(), isset( $opts['subpage'] )
1068                         ),
1069                         'wgMaxTocLevel' => $maxtoclevel,
1070                         'wgAllowExternalImages' => self::getOptionValue( 'wgAllowExternalImages', $opts, true ),
1071                         'wgThumbLimits' => [ self::getOptionValue( 'thumbsize', $opts, 180 ) ],
1072                         'wgDefaultLanguageVariant' => $variant,
1073                         'wgLinkHolderBatchSize' => $linkHolderBatchSize,
1074                         // Set as a JSON object like:
1075                         // wgEnableMagicLinks={"ISBN":false, "PMID":false, "RFC":false}
1076                         'wgEnableMagicLinks' => self::getOptionValue( 'wgEnableMagicLinks', $opts, [] )
1077                                 + [ 'ISBN' => true, 'PMID' => true, 'RFC' => true ],
1078                         // Test with legacy encoding by default until HTML5 is very stable and default
1079                         'wgFragmentMode' => [ 'legacy' ],
1080                 ];
1081
1082                 if ( $config ) {
1083                         $configLines = explode( "\n", $config );
1084
1085                         foreach ( $configLines as $line ) {
1086                                 list( $var, $value )  = explode( '=', $line, 2 );
1087                                 $setup[$var] = eval( "return $value;" );
1088                         }
1089                 }
1090
1091                 /** @since 1.20 */
1092                 Hooks::run( 'ParserTestGlobals', [ &$setup ] );
1093
1094                 // Create tidy driver
1095                 if ( isset( $opts['tidy'] ) ) {
1096                         // Cache a driver instance
1097                         if ( $this->tidyDriver === null ) {
1098                                 $this->tidyDriver = MWTidy::factory( $this->tidySupport->getConfig() );
1099                         }
1100                         $tidy = $this->tidyDriver;
1101                 } else {
1102                         $tidy = false;
1103                 }
1104                 MWTidy::setInstance( $tidy );
1105                 $teardown[] = function () {
1106                         MWTidy::destroySingleton();
1107                 };
1108
1109                 // Set content language. This invalidates the magic word cache and title services
1110                 $lang = Language::factory( $langCode );
1111                 $lang->resetNamespaces();
1112                 $setup['wgContLang'] = $lang;
1113                 $reset = function () {
1114                         MagicWord::clearCache();
1115                         $this->resetTitleServices();
1116                 };
1117                 $setup[] = $reset;
1118                 $teardown[] = $reset;
1119
1120                 // Make a user object with the same language
1121                 $user = new User;
1122                 $user->setOption( 'language', $langCode );
1123                 $setup['wgLang'] = $lang;
1124
1125                 // We (re)set $wgThumbLimits to a single-element array above.
1126                 $user->setOption( 'thumbsize', 0 );
1127
1128                 $setup['wgUser'] = $user;
1129
1130                 // And put both user and language into the context
1131                 $context = RequestContext::getMain();
1132                 $context->setUser( $user );
1133                 $context->setLanguage( $lang );
1134                 // And the skin!
1135                 $oldSkin = $context->getSkin();
1136                 $skinFactory = MediaWikiServices::getInstance()->getSkinFactory();
1137                 $context->setSkin( $skinFactory->makeSkin( $skin ) );
1138                 $context->setOutput( new OutputPage( $context ) );
1139                 $setup['wgOut'] = $context->getOutput();
1140                 $teardown[] = function () use ( $context, $oldSkin ) {
1141                         // Clear language conversion tables
1142                         $wrapper = TestingAccessWrapper::newFromObject(
1143                                 $context->getLanguage()->getConverter()
1144                         );
1145                         $wrapper->reloadTables();
1146                         // Reset context to the restored globals
1147                         $context->setUser( $GLOBALS['wgUser'] );
1148                         $context->setLanguage( $GLOBALS['wgContLang'] );
1149                         $context->setSkin( $oldSkin );
1150                         $context->setOutput( $GLOBALS['wgOut'] );
1151                 };
1152
1153                 $teardown[] = $this->executeSetupSnippets( $setup );
1154
1155                 return $this->createTeardownObject( $teardown, $nextTeardown );
1156         }
1157
1158         /**
1159          * List of temporary tables to create, without prefix.
1160          * Some of these probably aren't necessary.
1161          * @return array
1162          */
1163         private function listTables() {
1164                 global $wgCommentTableSchemaMigrationStage, $wgActorTableSchemaMigrationStage;
1165
1166                 $tables = [ 'user', 'user_properties', 'user_former_groups', 'page', 'page_restrictions',
1167                         'protected_titles', 'revision', 'ip_changes', 'text', 'pagelinks', 'imagelinks',
1168                         'categorylinks', 'templatelinks', 'externallinks', 'langlinks', 'iwlinks',
1169                         'site_stats', 'ipblocks', 'image', 'oldimage',
1170                         'recentchanges', 'watchlist', 'interwiki', 'logging', 'log_search',
1171                         'querycache', 'objectcache', 'job', 'l10n_cache', 'redirect', 'querycachetwo',
1172                         'archive', 'user_groups', 'page_props', 'category'
1173                 ];
1174
1175                 if ( $wgCommentTableSchemaMigrationStage >= MIGRATION_WRITE_BOTH ) {
1176                         // The new tables for comments are in use
1177                         $tables[] = 'comment';
1178                         $tables[] = 'revision_comment_temp';
1179                         $tables[] = 'image_comment_temp';
1180                 }
1181
1182                 if ( $wgActorTableSchemaMigrationStage >= MIGRATION_WRITE_BOTH ) {
1183                         // The new tables for actors are in use
1184                         $tables[] = 'actor';
1185                         $tables[] = 'revision_actor_temp';
1186                 }
1187
1188                 if ( in_array( $this->db->getType(), [ 'mysql', 'sqlite', 'oracle' ] ) ) {
1189                         array_push( $tables, 'searchindex' );
1190                 }
1191
1192                 // Allow extensions to add to the list of tables to duplicate;
1193                 // may be necessary if they hook into page save or other code
1194                 // which will require them while running tests.
1195                 Hooks::run( 'ParserTestTables', [ &$tables ] );
1196
1197                 return $tables;
1198         }
1199
1200         public function setDatabase( IDatabase $db ) {
1201                 $this->db = $db;
1202                 $this->setupDone['setDatabase'] = true;
1203         }
1204
1205         /**
1206          * Set up temporary DB tables.
1207          *
1208          * For best performance, call this once only for all tests. However, it can
1209          * be called at the start of each test if more isolation is desired.
1210          *
1211          * @todo: This is basically an unrefactored copy of
1212          * MediaWikiTestCase::setupAllTestDBs. They should be factored out somehow.
1213          *
1214          * Do not call this function from a MediaWikiTestCase subclass, since
1215          * MediaWikiTestCase does its own DB setup. Instead use setDatabase().
1216          *
1217          * @see staticSetup() for more information about setup/teardown
1218          *
1219          * @param ScopedCallback|null $nextTeardown The next teardown object
1220          * @return ScopedCallback The teardown object
1221          */
1222         public function setupDatabase( $nextTeardown = null ) {
1223                 global $wgDBprefix;
1224
1225                 $this->db = wfGetDB( DB_MASTER );
1226                 $dbType = $this->db->getType();
1227
1228                 if ( $dbType == 'oracle' ) {
1229                         $suspiciousPrefixes = [ 'pt_', MediaWikiTestCase::ORA_DB_PREFIX ];
1230                 } else {
1231                         $suspiciousPrefixes = [ 'parsertest_', MediaWikiTestCase::DB_PREFIX ];
1232                 }
1233                 if ( in_array( $wgDBprefix, $suspiciousPrefixes ) ) {
1234                         throw new MWException( "\$wgDBprefix=$wgDBprefix suggests DB setup is already done" );
1235                 }
1236
1237                 $teardown = [];
1238
1239                 $teardown[] = $this->markSetupDone( 'setupDatabase' );
1240
1241                 # CREATE TEMPORARY TABLE breaks if there is more than one server
1242                 if ( wfGetLB()->getServerCount() != 1 ) {
1243                         $this->useTemporaryTables = false;
1244                 }
1245
1246                 $temporary = $this->useTemporaryTables || $dbType == 'postgres';
1247                 $prefix = $dbType != 'oracle' ? 'parsertest_' : 'pt_';
1248
1249                 $this->dbClone = new CloneDatabase( $this->db, $this->listTables(), $prefix );
1250                 $this->dbClone->useTemporaryTables( $temporary );
1251                 $this->dbClone->cloneTableStructure();
1252
1253                 if ( $dbType == 'oracle' ) {
1254                         $this->db->query( 'BEGIN FILL_WIKI_INFO; END;' );
1255                         # Insert 0 user to prevent FK violations
1256
1257                         # Anonymous user
1258                         $this->db->insert( 'user', [
1259                                 'user_id' => 0,
1260                                 'user_name' => 'Anonymous' ] );
1261                 }
1262
1263                 $teardown[] = function () {
1264                         $this->teardownDatabase();
1265                 };
1266
1267                 // Wipe some DB query result caches on setup and teardown
1268                 $reset = function () {
1269                         LinkCache::singleton()->clear();
1270
1271                         // Clear the message cache
1272                         MessageCache::singleton()->clear();
1273                 };
1274                 $reset();
1275                 $teardown[] = $reset;
1276                 return $this->createTeardownObject( $teardown, $nextTeardown );
1277         }
1278
1279         /**
1280          * Add data about uploads to the new test DB, and set up the upload
1281          * directory. This should be called after either setDatabase() or
1282          * setupDatabase().
1283          *
1284          * @param ScopedCallback|null $nextTeardown The next teardown object
1285          * @return ScopedCallback The teardown object
1286          */
1287         public function setupUploads( $nextTeardown = null ) {
1288                 $teardown = [];
1289
1290                 $this->checkSetupDone( 'setupDatabase', 'setDatabase' );
1291                 $teardown[] = $this->markSetupDone( 'setupUploads' );
1292
1293                 // Create the files in the upload directory (or pretend to create them
1294                 // in a MockFileBackend). Append teardown callback.
1295                 $teardown[] = $this->setupUploadBackend();
1296
1297                 // Create a user
1298                 $user = User::createNew( 'WikiSysop' );
1299
1300                 // Register the uploads in the database
1301
1302                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.jpg' ) );
1303                 # note that the size/width/height/bits/etc of the file
1304                 # are actually set by inspecting the file itself; the arguments
1305                 # to recordUpload2 have no effect.  That said, we try to make things
1306                 # match up so it is less confusing to readers of the code & tests.
1307                 $image->recordUpload2( '', 'Upload of some lame file', 'Some lame file', [
1308                         'size' => 7881,
1309                         'width' => 1941,
1310                         'height' => 220,
1311                         'bits' => 8,
1312                         'media_type' => MEDIATYPE_BITMAP,
1313                         'mime' => 'image/jpeg',
1314                         'metadata' => serialize( [] ),
1315                         'sha1' => Wikimedia\base_convert( '1', 16, 36, 31 ),
1316                         'fileExists' => true
1317                 ], $this->db->timestamp( '20010115123500' ), $user );
1318
1319                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Thumb.png' ) );
1320                 # again, note that size/width/height below are ignored; see above.
1321                 $image->recordUpload2( '', 'Upload of some lame thumbnail', 'Some lame thumbnail', [
1322                         'size' => 22589,
1323                         'width' => 135,
1324                         'height' => 135,
1325                         'bits' => 8,
1326                         'media_type' => MEDIATYPE_BITMAP,
1327                         'mime' => 'image/png',
1328                         'metadata' => serialize( [] ),
1329                         'sha1' => Wikimedia\base_convert( '2', 16, 36, 31 ),
1330                         'fileExists' => true
1331                 ], $this->db->timestamp( '20130225203040' ), $user );
1332
1333                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Foobar.svg' ) );
1334                 $image->recordUpload2( '', 'Upload of some lame SVG', 'Some lame SVG', [
1335                                 'size'        => 12345,
1336                                 'width'       => 240,
1337                                 'height'      => 180,
1338                                 'bits'        => 0,
1339                                 'media_type'  => MEDIATYPE_DRAWING,
1340                                 'mime'        => 'image/svg+xml',
1341                                 'metadata'    => serialize( [] ),
1342                                 'sha1'        => Wikimedia\base_convert( '', 16, 36, 31 ),
1343                                 'fileExists'  => true
1344                 ], $this->db->timestamp( '20010115123500' ), $user );
1345
1346                 # This image will be blacklisted in [[MediaWiki:Bad image list]]
1347                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Bad.jpg' ) );
1348                 $image->recordUpload2( '', 'zomgnotcensored', 'Borderline image', [
1349                         'size' => 12345,
1350                         'width' => 320,
1351                         'height' => 240,
1352                         'bits' => 24,
1353                         'media_type' => MEDIATYPE_BITMAP,
1354                         'mime' => 'image/jpeg',
1355                         'metadata' => serialize( [] ),
1356                         'sha1' => Wikimedia\base_convert( '3', 16, 36, 31 ),
1357                         'fileExists' => true
1358                 ], $this->db->timestamp( '20010115123500' ), $user );
1359
1360                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Video.ogv' ) );
1361                 $image->recordUpload2( '', 'A pretty movie', 'Will it play', [
1362                         'size' => 12345,
1363                         'width' => 320,
1364                         'height' => 240,
1365                         'bits' => 0,
1366                         'media_type' => MEDIATYPE_VIDEO,
1367                         'mime' => 'application/ogg',
1368                         'metadata' => serialize( [] ),
1369                         'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
1370                         'fileExists' => true
1371                 ], $this->db->timestamp( '20010115123500' ), $user );
1372
1373                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'Audio.oga' ) );
1374                 $image->recordUpload2( '', 'An awesome hitsong', 'Will it play', [
1375                         'size' => 12345,
1376                         'width' => 0,
1377                         'height' => 0,
1378                         'bits' => 0,
1379                         'media_type' => MEDIATYPE_AUDIO,
1380                         'mime' => 'application/ogg',
1381                         'metadata' => serialize( [] ),
1382                         'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
1383                         'fileExists' => true
1384                 ], $this->db->timestamp( '20010115123500' ), $user );
1385
1386                 # A DjVu file
1387                 $image = wfLocalFile( Title::makeTitle( NS_FILE, 'LoremIpsum.djvu' ) );
1388                 $image->recordUpload2( '', 'Upload a DjVu', 'A DjVu', [
1389                         'size' => 3249,
1390                         'width' => 2480,
1391                         'height' => 3508,
1392                         'bits' => 0,
1393                         'media_type' => MEDIATYPE_BITMAP,
1394                         'mime' => 'image/vnd.djvu',
1395                         'metadata' => '<?xml version="1.0" ?>
1396 <!DOCTYPE DjVuXML PUBLIC "-//W3C//DTD DjVuXML 1.1//EN" "pubtext/DjVuXML-s.dtd">
1397 <DjVuXML>
1398 <HEAD></HEAD>
1399 <BODY><OBJECT height="3508" width="2480">
1400 <PARAM name="DPI" value="300" />
1401 <PARAM name="GAMMA" value="2.2" />
1402 </OBJECT>
1403 <OBJECT height="3508" width="2480">
1404 <PARAM name="DPI" value="300" />
1405 <PARAM name="GAMMA" value="2.2" />
1406 </OBJECT>
1407 <OBJECT height="3508" width="2480">
1408 <PARAM name="DPI" value="300" />
1409 <PARAM name="GAMMA" value="2.2" />
1410 </OBJECT>
1411 <OBJECT height="3508" width="2480">
1412 <PARAM name="DPI" value="300" />
1413 <PARAM name="GAMMA" value="2.2" />
1414 </OBJECT>
1415 <OBJECT height="3508" width="2480">
1416 <PARAM name="DPI" value="300" />
1417 <PARAM name="GAMMA" value="2.2" />
1418 </OBJECT>
1419 </BODY>
1420 </DjVuXML>',
1421                         'sha1' => Wikimedia\base_convert( '', 16, 36, 31 ),
1422                         'fileExists' => true
1423                 ], $this->db->timestamp( '20010115123600' ), $user );
1424
1425                 return $this->createTeardownObject( $teardown, $nextTeardown );
1426         }
1427
1428         /**
1429          * Helper for database teardown, called from the teardown closure. Destroy
1430          * the database clone and fix up some things that CloneDatabase doesn't fix.
1431          *
1432          * @todo Move most things here to CloneDatabase
1433          */
1434         private function teardownDatabase() {
1435                 $this->checkSetupDone( 'setupDatabase' );
1436
1437                 $this->dbClone->destroy();
1438                 $this->databaseSetupDone = false;
1439
1440                 if ( $this->useTemporaryTables ) {
1441                         if ( $this->db->getType() == 'sqlite' ) {
1442                                 # Under SQLite the searchindex table is virtual and need
1443                                 # to be explicitly destroyed. See T31912
1444                                 # See also MediaWikiTestCase::destroyDB()
1445                                 wfDebug( __METHOD__ . " explicitly destroying sqlite virtual table parsertest_searchindex\n" );
1446                                 $this->db->query( "DROP TABLE `parsertest_searchindex`" );
1447                         }
1448                         # Don't need to do anything
1449                         return;
1450                 }
1451
1452                 $tables = $this->listTables();
1453
1454                 foreach ( $tables as $table ) {
1455                         if ( $this->db->getType() == 'oracle' ) {
1456                                 $this->db->query( "DROP TABLE pt_$table DROP CONSTRAINTS" );
1457                         } else {
1458                                 $this->db->query( "DROP TABLE `parsertest_$table`" );
1459                         }
1460                 }
1461
1462                 if ( $this->db->getType() == 'oracle' ) {
1463                         $this->db->query( 'BEGIN FILL_WIKI_INFO; END;' );
1464                 }
1465         }
1466
1467         /**
1468          * Upload test files to the backend created by createRepoGroup().
1469          *
1470          * @return callable The teardown callback
1471          */
1472         private function setupUploadBackend() {
1473                 global $IP;
1474
1475                 $repo = RepoGroup::singleton()->getLocalRepo();
1476                 $base = $repo->getZonePath( 'public' );
1477                 $backend = $repo->getBackend();
1478                 $backend->prepare( [ 'dir' => "$base/3/3a" ] );
1479                 $backend->store( [
1480                         'src' => "$IP/tests/phpunit/data/parser/headbg.jpg",
1481                         'dst' => "$base/3/3a/Foobar.jpg"
1482                 ] );
1483                 $backend->prepare( [ 'dir' => "$base/e/ea" ] );
1484                 $backend->store( [
1485                         'src' => "$IP/tests/phpunit/data/parser/wiki.png",
1486                         'dst' => "$base/e/ea/Thumb.png"
1487                 ] );
1488                 $backend->prepare( [ 'dir' => "$base/0/09" ] );
1489                 $backend->store( [
1490                         'src' => "$IP/tests/phpunit/data/parser/headbg.jpg",
1491                         'dst' => "$base/0/09/Bad.jpg"
1492                 ] );
1493                 $backend->prepare( [ 'dir' => "$base/5/5f" ] );
1494                 $backend->store( [
1495                         'src' => "$IP/tests/phpunit/data/parser/LoremIpsum.djvu",
1496                         'dst' => "$base/5/5f/LoremIpsum.djvu"
1497                 ] );
1498
1499                 // No helpful SVG file to copy, so make one ourselves
1500                 $data = '<?xml version="1.0" encoding="utf-8"?>' .
1501                         '<svg xmlns="http://www.w3.org/2000/svg"' .
1502                         ' version="1.1" width="240" height="180"/>';
1503
1504                 $backend->prepare( [ 'dir' => "$base/f/ff" ] );
1505                 $backend->quickCreate( [
1506                         'content' => $data, 'dst' => "$base/f/ff/Foobar.svg"
1507                 ] );
1508
1509                 return function () use ( $backend ) {
1510                         if ( $backend instanceof MockFileBackend ) {
1511                                 // In memory backend, so dont bother cleaning them up.
1512                                 return;
1513                         }
1514                         $this->teardownUploadBackend();
1515                 };
1516         }
1517
1518         /**
1519          * Remove the dummy uploads directory
1520          */
1521         private function teardownUploadBackend() {
1522                 if ( $this->keepUploads ) {
1523                         return;
1524                 }
1525
1526                 $repo = RepoGroup::singleton()->getLocalRepo();
1527                 $public = $repo->getZonePath( 'public' );
1528
1529                 $this->deleteFiles(
1530                         [
1531                                 "$public/3/3a/Foobar.jpg",
1532                                 "$public/e/ea/Thumb.png",
1533                                 "$public/0/09/Bad.jpg",
1534                                 "$public/5/5f/LoremIpsum.djvu",
1535                                 "$public/f/ff/Foobar.svg",
1536                                 "$public/0/00/Video.ogv",
1537                                 "$public/4/41/Audio.oga",
1538                         ]
1539                 );
1540         }
1541
1542         /**
1543          * Delete the specified files and their parent directories
1544          * @param array $files File backend URIs mwstore://...
1545          */
1546         private function deleteFiles( $files ) {
1547                 // Delete the files
1548                 $backend = RepoGroup::singleton()->getLocalRepo()->getBackend();
1549                 foreach ( $files as $file ) {
1550                         $backend->delete( [ 'src' => $file ], [ 'force' => 1 ] );
1551                 }
1552
1553                 // Delete the parent directories
1554                 foreach ( $files as $file ) {
1555                         $tmp = FileBackend::parentStoragePath( $file );
1556                         while ( $tmp ) {
1557                                 if ( !$backend->clean( [ 'dir' => $tmp ] )->isOK() ) {
1558                                         break;
1559                                 }
1560                                 $tmp = FileBackend::parentStoragePath( $tmp );
1561                         }
1562                 }
1563         }
1564
1565         /**
1566          * Add articles to the test DB.
1567          *
1568          * @param array $articles Article info array from TestFileReader
1569          */
1570         public function addArticles( $articles ) {
1571                 global $wgContLang;
1572                 $setup = [];
1573                 $teardown = [];
1574
1575                 // Be sure ParserTestRunner::addArticle has correct language set,
1576                 // so that system messages get into the right language cache
1577                 if ( $wgContLang->getCode() !== 'en' ) {
1578                         $setup['wgLanguageCode'] = 'en';
1579                         $setup['wgContLang'] = Language::factory( 'en' );
1580                 }
1581
1582                 // Add special namespaces, in case that hasn't been done by staticSetup() yet
1583                 $this->appendNamespaceSetup( $setup, $teardown );
1584
1585                 // wgCapitalLinks obviously needs initialisation
1586                 $setup['wgCapitalLinks'] = true;
1587
1588                 $teardown[] = $this->executeSetupSnippets( $setup );
1589
1590                 foreach ( $articles as $info ) {
1591                         $this->addArticle( $info['name'], $info['text'], $info['file'], $info['line'] );
1592                 }
1593
1594                 // Wipe WANObjectCache process cache, which is invalidated by article insertion
1595                 // due to T144706
1596                 ObjectCache::getMainWANInstance()->clearProcessCache();
1597
1598                 $this->executeSetupSnippets( $teardown );
1599         }
1600
1601         /**
1602          * Insert a temporary test article
1603          * @param string $name The title, including any prefix
1604          * @param string $text The article text
1605          * @param string $file The input file name
1606          * @param int|string $line The input line number, for reporting errors
1607          * @throws Exception
1608          * @throws MWException
1609          */
1610         private function addArticle( $name, $text, $file, $line ) {
1611                 $text = self::chomp( $text );
1612                 $name = self::chomp( $name );
1613
1614                 $title = Title::newFromText( $name );
1615                 wfDebug( __METHOD__ . ": adding $name" );
1616
1617                 if ( is_null( $title ) ) {
1618                         throw new MWException( "invalid title '$name' at $file:$line\n" );
1619                 }
1620
1621                 $newContent = ContentHandler::makeContent( $text, $title );
1622
1623                 $page = WikiPage::factory( $title );
1624                 $page->loadPageData( 'fromdbmaster' );
1625
1626                 if ( $page->exists() ) {
1627                         $content = $page->getContent( Revision::RAW );
1628                         // Only reject the title, if the content/content model is different.
1629                         // This makes it easier to create Template:(( or Template:)) in different extensions
1630                         if ( $newContent->equals( $content ) ) {
1631                                 return;
1632                         }
1633                         throw new MWException(
1634                                 "duplicate article '$name' with different content at $file:$line\n"
1635                         );
1636                 }
1637
1638                 // Use mock parser, to make debugging of actual parser tests simpler.
1639                 // But initialise the MessageCache clone first, don't let MessageCache
1640                 // get a reference to the mock object.
1641                 MessageCache::singleton()->getParser();
1642                 $restore = $this->executeSetupSnippets( [ 'wgParser' => new ParserTestMockParser ] );
1643                 try {
1644                         $status = $page->doEditContent(
1645                                 $newContent,
1646                                 '',
1647                                 EDIT_NEW | EDIT_INTERNAL
1648                         );
1649                 } finally {
1650                         $restore();
1651                 }
1652
1653                 if ( !$status->isOK() ) {
1654                         throw new MWException( $status->getWikiText( false, false, 'en' ) );
1655                 }
1656
1657                 // The RepoGroup cache is invalidated by the creation of file redirects
1658                 if ( $title->inNamespace( NS_FILE ) ) {
1659                         RepoGroup::singleton()->clearCache( $title );
1660                 }
1661         }
1662
1663         /**
1664          * Check if a hook is installed
1665          *
1666          * @param string $name
1667          * @return bool True if tag hook is present
1668          */
1669         public function requireHook( $name ) {
1670                 global $wgParser;
1671
1672                 $wgParser->firstCallInit(); // make sure hooks are loaded.
1673                 if ( isset( $wgParser->mTagHooks[$name] ) ) {
1674                         return true;
1675                 } else {
1676                         $this->recorder->warning( "   This test suite requires the '$name' hook " .
1677                                 "extension, skipping." );
1678                         return false;
1679                 }
1680         }
1681
1682         /**
1683          * Check if a function hook is installed
1684          *
1685          * @param string $name
1686          * @return bool True if function hook is present
1687          */
1688         public function requireFunctionHook( $name ) {
1689                 global $wgParser;
1690
1691                 $wgParser->firstCallInit(); // make sure hooks are loaded.
1692
1693                 if ( isset( $wgParser->mFunctionHooks[$name] ) ) {
1694                         return true;
1695                 } else {
1696                         $this->recorder->warning( "   This test suite requires the '$name' function " .
1697                                 "hook extension, skipping." );
1698                         return false;
1699                 }
1700         }
1701
1702         /**
1703          * Check if a transparent tag hook is installed
1704          *
1705          * @param string $name
1706          * @return bool True if function hook is present
1707          */
1708         public function requireTransparentHook( $name ) {
1709                 global $wgParser;
1710
1711                 $wgParser->firstCallInit(); // make sure hooks are loaded.
1712
1713                 if ( isset( $wgParser->mTransparentTagHooks[$name] ) ) {
1714                         return true;
1715                 } else {
1716                         $this->recorder->warning( "   This test suite requires the '$name' transparent " .
1717                                 "hook extension, skipping.\n" );
1718                         return false;
1719                 }
1720         }
1721
1722         /**
1723          * Fake constant timestamp to make sure time-related parser
1724          * functions give a persistent value.
1725          *
1726          * - Parser::getVariableValue (via ParserGetVariableValueTs hook)
1727          * - Parser::preSaveTransform (via ParserOptions)
1728          */
1729         private function getFakeTimestamp() {
1730                 // parsed as '1970-01-01T00:02:03Z'
1731                 return 123;
1732         }
1733 }