tests/phpunit/includes/content/ContentHandlerTest.php

   1 <?php
   2 use MediaWiki\MediaWikiServices;
   3 use Wikimedia\TestingAccessWrapper;
   4
   5 /**
   6  * @group ContentHandler
   7  * @group Database
   8  */
   9 class ContentHandlerTest extends MediaWikiTestCase {
  10
  11         protected function setUp() {
  12                 parent::setUp();
  13
  14                 $this->setMwGlobals( [
  15                         'wgExtraNamespaces' => [
  16                                 12312 => 'Dummy',
  17                                 12313 => 'Dummy_talk',
  18                         ],
  19                         // The below tests assume that namespaces not mentioned here (Help, User, MediaWiki, ..)
  20                         // default to CONTENT_MODEL_WIKITEXT.
  21                         'wgNamespaceContentModels' => [
  22                                 12312 => 'testing',
  23                         ],
  24                         'wgContentHandlers' => [
  25                                 CONTENT_MODEL_WIKITEXT => WikitextContentHandler::class,
  26                                 CONTENT_MODEL_JAVASCRIPT => JavaScriptContentHandler::class,
  27                                 CONTENT_MODEL_JSON => JsonContentHandler::class,
  28                                 CONTENT_MODEL_CSS => CssContentHandler::class,
  29                                 CONTENT_MODEL_TEXT => TextContentHandler::class,
  30                                 'testing' => DummyContentHandlerForTesting::class,
  31                                 'testing-callbacks' => function ( $modelId ) {
  32                                         return new DummyContentHandlerForTesting( $modelId );
  33                                 }
  34                         ],
  35                 ] );
  36
  37                 // Reset LinkCache
  38                 MediaWikiServices::getInstance()->resetServiceForTesting( 'LinkCache' );
  39         }
  40
  41         protected function tearDown() {
  42                 // Reset LinkCache
  43                 MediaWikiServices::getInstance()->resetServiceForTesting( 'LinkCache' );
  44
  45                 parent::tearDown();
  46         }
  47
  48         public function addDBDataOnce() {
  49                 $this->insertPage( 'Not_Main_Page', 'This is not a main page' );
  50                 $this->insertPage( 'Smithee', 'A smithee is one who smiths. See also [[Alan Smithee]]' );
  51         }
  52
  53         public static function dataGetDefaultModelFor() {
  54                 return [
  55                         [ 'Help:Foo', CONTENT_MODEL_WIKITEXT ],
  56                         [ 'Help:Foo.js', CONTENT_MODEL_WIKITEXT ],
  57                         [ 'Help:Foo.css', CONTENT_MODEL_WIKITEXT ],
  58                         [ 'Help:Foo.json', CONTENT_MODEL_WIKITEXT ],
  59                         [ 'Help:Foo/bar.js', CONTENT_MODEL_WIKITEXT ],
  60                         [ 'User:Foo', CONTENT_MODEL_WIKITEXT ],
  61                         [ 'User:Foo.js', CONTENT_MODEL_WIKITEXT ],
  62                         [ 'User:Foo.css', CONTENT_MODEL_WIKITEXT ],
  63                         [ 'User:Foo.json', CONTENT_MODEL_WIKITEXT ],
  64                         [ 'User:Foo/bar.js', CONTENT_MODEL_JAVASCRIPT ],
  65                         [ 'User:Foo/bar.css', CONTENT_MODEL_CSS ],
  66                         [ 'User:Foo/bar.json', CONTENT_MODEL_JSON ],
  67                         [ 'User:Foo/bar.json.nope', CONTENT_MODEL_WIKITEXT ],
  68                         [ 'User talk:Foo/bar.css', CONTENT_MODEL_WIKITEXT ],
  69                         [ 'User:Foo/bar.js.xxx', CONTENT_MODEL_WIKITEXT ],
  70                         [ 'User:Foo/bar.xxx', CONTENT_MODEL_WIKITEXT ],
  71                         [ 'MediaWiki:Foo.js', CONTENT_MODEL_JAVASCRIPT ],
  72                         [ 'MediaWiki:Foo.JS', CONTENT_MODEL_WIKITEXT ],
  73                         [ 'MediaWiki:Foo.css', CONTENT_MODEL_CSS ],
  74                         [ 'MediaWiki:Foo.css.xxx', CONTENT_MODEL_WIKITEXT ],
  75                         [ 'MediaWiki:Foo.CSS', CONTENT_MODEL_WIKITEXT ],
  76                         [ 'MediaWiki:Foo.json', CONTENT_MODEL_JSON ],
  77                         [ 'MediaWiki:Foo.JSON', CONTENT_MODEL_WIKITEXT ],
  78                 ];
  79         }
  80
  81         /**
  82          * @dataProvider dataGetDefaultModelFor
  83          * @covers ContentHandler::getDefaultModelFor
  84          */
  85         public function testGetDefaultModelFor( $title, $expectedModelId ) {
  86                 $title = Title::newFromText( $title );
  87                 $this->assertEquals( $expectedModelId, ContentHandler::getDefaultModelFor( $title ) );
  88         }
  89
  90         /**
  91          * @dataProvider dataGetDefaultModelFor
  92          * @covers ContentHandler::getForTitle
  93          */
  94         public function testGetForTitle( $title, $expectedContentModel ) {
  95                 $title = Title::newFromText( $title );
  96                 MediaWikiServices::getInstance()->getLinkCache()->addBadLinkObj( $title );
  97                 $handler = ContentHandler::getForTitle( $title );
  98                 $this->assertEquals( $expectedContentModel, $handler->getModelID() );
  99         }
 100
 101         public static function dataGetLocalizedName() {
 102                 return [
 103                         [ null, null ],
 104                         [ "xyzzy", null ],
 105
 106                         // XXX: depends on content language
 107                         [ CONTENT_MODEL_JAVASCRIPT, '/javascript/i' ],
 108                 ];
 109         }
 110
 111         /**
 112          * @dataProvider dataGetLocalizedName
 113          * @covers ContentHandler::getLocalizedName
 114          */
 115         public function testGetLocalizedName( $id, $expected ) {
 116                 $name = ContentHandler::getLocalizedName( $id );
 117
 118                 if ( $expected ) {
 119                         $this->assertNotNull( $name, "no name found for content model $id" );
 120                         $this->assertTrue( preg_match( $expected, $name ) > 0,
 121                                 "content model name for #$id did not match pattern $expected"
 122                         );
 123                 } else {
 124                         $this->assertEquals( $id, $name, "localization of unknown model $id should have "
 125                                 . "fallen back to use the model id directly."
 126                         );
 127                 }
 128         }
 129
 130         public static function dataGetPageLanguage() {
 131                 global $wgLanguageCode;
 132
 133                 return [
 134                         [ "Main", $wgLanguageCode ],
 135                         [ "Dummy:Foo", $wgLanguageCode ],
 136                         [ "MediaWiki:common.js", 'en' ],
 137                         [ "User:Foo/common.js", 'en' ],
 138                         [ "MediaWiki:common.css", 'en' ],
 139                         [ "User:Foo/common.css", 'en' ],
 140                         [ "User:Foo", $wgLanguageCode ],
 141
 142                         [ CONTENT_MODEL_JAVASCRIPT, 'javascript' ],
 143                 ];
 144         }
 145
 146         /**
 147          * @dataProvider dataGetPageLanguage
 148          * @covers ContentHandler::getPageLanguage
 149          */
 150         public function testGetPageLanguage( $title, $expected ) {
 151                 if ( is_string( $title ) ) {
 152                         $title = Title::newFromText( $title );
 153                         MediaWikiServices::getInstance()->getLinkCache()->addBadLinkObj( $title );
 154                 }
 155
 156                 $expected = wfGetLangObj( $expected );
 157
 158                 $handler = ContentHandler::getForTitle( $title );
 159                 $lang = $handler->getPageLanguage( $title );
 160
 161                 $this->assertEquals( $expected->getCode(), $lang->getCode() );
 162         }
 163
 164         public static function dataGetContentText_Null() {
 165                 return [
 166                         [ 'fail' ],
 167                         [ 'serialize' ],
 168                         [ 'ignore' ],
 169                 ];
 170         }
 171
 172         /**
 173          * @dataProvider dataGetContentText_Null
 174          * @covers ContentHandler::getContentText
 175          */
 176         public function testGetContentText_Null( $contentHandlerTextFallback ) {
 177                 $this->setMwGlobals( 'wgContentHandlerTextFallback', $contentHandlerTextFallback );
 178
 179                 $content = null;
 180
 181                 $text = ContentHandler::getContentText( $content );
 182                 $this->assertEquals( '', $text );
 183         }
 184
 185         public static function dataGetContentText_TextContent() {
 186                 return [
 187                         [ 'fail' ],
 188                         [ 'serialize' ],
 189                         [ 'ignore' ],
 190                 ];
 191         }
 192
 193         /**
 194          * @dataProvider dataGetContentText_TextContent
 195          * @covers ContentHandler::getContentText
 196          */
 197         public function testGetContentText_TextContent( $contentHandlerTextFallback ) {
 198                 $this->setMwGlobals( 'wgContentHandlerTextFallback', $contentHandlerTextFallback );
 199
 200                 $content = new WikitextContent( "hello world" );
 201
 202                 $text = ContentHandler::getContentText( $content );
 203                 $this->assertEquals( $content->getText(), $text );
 204         }
 205
 206         /**
 207          * ContentHandler::getContentText should have thrown an exception for non-text Content object
 208          * @expectedException MWException
 209          * @covers ContentHandler::getContentText
 210          */
 211         public function testGetContentText_NonTextContent_fail() {
 212                 $this->setMwGlobals( 'wgContentHandlerTextFallback', 'fail' );
 213
 214                 $content = new DummyContentForTesting( "hello world" );
 215
 216                 ContentHandler::getContentText( $content );
 217         }
 218
 219         /**
 220          * @covers ContentHandler::getContentText
 221          */
 222         public function testGetContentText_NonTextContent_serialize() {
 223                 $this->setMwGlobals( 'wgContentHandlerTextFallback', 'serialize' );
 224
 225                 $content = new DummyContentForTesting( "hello world" );
 226
 227                 $text = ContentHandler::getContentText( $content );
 228                 $this->assertEquals( $content->serialize(), $text );
 229         }
 230
 231         /**
 232          * @covers ContentHandler::getContentText
 233          */
 234         public function testGetContentText_NonTextContent_ignore() {
 235                 $this->setMwGlobals( 'wgContentHandlerTextFallback', 'ignore' );
 236
 237                 $content = new DummyContentForTesting( "hello world" );
 238
 239                 $text = ContentHandler::getContentText( $content );
 240                 $this->assertNull( $text );
 241         }
 242
 243         public static function dataMakeContent() {
 244                 return [
 245                         [ 'hallo', 'Help:Test', null, null, CONTENT_MODEL_WIKITEXT, false ],
 246                         [ 'hallo', 'MediaWiki:Test.js', null, null, CONTENT_MODEL_JAVASCRIPT, false ],
 247                         [ serialize( 'hallo' ), 'Dummy:Test', null, null, "testing", false ],
 248
 249                         [
 250                                 'hallo',
 251                                 'Help:Test',
 252                                 null,
 253                                 CONTENT_FORMAT_WIKITEXT,
 254                                 CONTENT_MODEL_WIKITEXT,
 255                                 false
 256                         ],
 257                         [
 258                                 'hallo',
 259                                 'MediaWiki:Test.js',
 260                                 null,
 261                                 CONTENT_FORMAT_JAVASCRIPT,
 262                                 CONTENT_MODEL_JAVASCRIPT,
 263                                 false
 264                         ],
 265                         [ serialize( 'hallo' ), 'Dummy:Test', null, "testing", "testing", false ],
 266
 267                         [ 'hallo', 'Help:Test', CONTENT_MODEL_CSS, null, CONTENT_MODEL_CSS, false ],
 268                         [
 269                                 'hallo',
 270                                 'MediaWiki:Test.js',
 271                                 CONTENT_MODEL_CSS,
 272                                 null,
 273                                 CONTENT_MODEL_CSS,
 274                                 false
 275                         ],
 276                         [
 277                                 serialize( 'hallo' ),
 278                                 'Dummy:Test',
 279                                 CONTENT_MODEL_CSS,
 280                                 null,
 281                                 CONTENT_MODEL_CSS,
 282                                 false
 283                         ],
 284
 285                         [ 'hallo', 'Help:Test', CONTENT_MODEL_WIKITEXT, "testing", null, true ],
 286                         [ 'hallo', 'MediaWiki:Test.js', CONTENT_MODEL_CSS, "testing", null, true ],
 287                         [ 'hallo', 'Dummy:Test', CONTENT_MODEL_JAVASCRIPT, "testing", null, true ],
 288                 ];
 289         }
 290
 291         /**
 292          * @dataProvider dataMakeContent
 293          * @covers ContentHandler::makeContent
 294          */
 295         public function testMakeContent( $data, $title, $modelId, $format,
 296                 $expectedModelId, $shouldFail
 297         ) {
 298                 $title = Title::newFromText( $title );
 299                 MediaWikiServices::getInstance()->getLinkCache()->addBadLinkObj( $title );
 300                 try {
 301                         $content = ContentHandler::makeContent( $data, $title, $modelId, $format );
 302
 303                         if ( $shouldFail ) {
 304                                 $this->fail( "ContentHandler::makeContent should have failed!" );
 305                         }
 306
 307                         $this->assertEquals( $expectedModelId, $content->getModel(), 'bad model id' );
 308                         $this->assertEquals( $data, $content->serialize(), 'bad serialized data' );
 309                 } catch ( MWException $ex ) {
 310                         if ( !$shouldFail ) {
 311                                 $this->fail( "ContentHandler::makeContent failed unexpectedly: " . $ex->getMessage() );
 312                         } else {
 313                                 // dummy, so we don't get the "test did not perform any assertions" message.
 314                                 $this->assertTrue( true );
 315                         }
 316                 }
 317         }
 318
 319         /**
 320          * @covers ContentHandler::getAutosummary
 321          *
 322          * Test if we become a "Created blank page" summary from getAutoSummary if no Content added to
 323          * page.
 324          */
 325         public function testGetAutosummary() {
 326                 $this->setContentLang( 'en' );
 327
 328                 $content = new DummyContentHandlerForTesting( CONTENT_MODEL_WIKITEXT );
 329                 $title = Title::newFromText( 'Help:Test' );
 330                 // Create a new content object with no content
 331                 $newContent = ContentHandler::makeContent( '', $title, CONTENT_MODEL_WIKITEXT, null );
 332                 // first check, if we become a blank page created summary with the right bitmask
 333                 $autoSummary = $content->getAutosummary( null, $newContent, 97 );
 334                 $this->assertEquals( $autoSummary,
 335                         wfMessage( 'autosumm-newblank' )->inContentLanguage()->text() );
 336                 // now check, what we become with another bitmask
 337                 $autoSummary = $content->getAutosummary( null, $newContent, 92 );
 338                 $this->assertEquals( $autoSummary, '' );
 339         }
 340
 341         /**
 342          * Test software tag that is added when content model of the page changes
 343          * @covers ContentHandler::getChangeTag
 344          */
 345         public function testGetChangeTag() {
 346                 $this->setMwGlobals( 'wgSoftwareTags', [ 'mw-contentmodelchange' => true ] );
 347                 $wikitextContentHandler = new DummyContentHandlerForTesting( CONTENT_MODEL_WIKITEXT );
 348                 // Create old content object with javascript content model
 349                 $oldContent = ContentHandler::makeContent( '', null, CONTENT_MODEL_JAVASCRIPT, null );
 350                 // Create new content object with wikitext content model
 351                 $newContent = ContentHandler::makeContent( '', null, CONTENT_MODEL_WIKITEXT, null );
 352                 // Get the tag for this edit
 353                 $tag = $wikitextContentHandler->getChangeTag( $oldContent, $newContent, EDIT_UPDATE );
 354                 $this->assertSame( $tag, 'mw-contentmodelchange' );
 355         }
 356
 357         /**
 358          * @covers ContentHandler::supportsCategories
 359          */
 360         public function testSupportsCategories() {
 361                 $handler = new DummyContentHandlerForTesting( CONTENT_MODEL_WIKITEXT );
 362                 $this->assertTrue( $handler->supportsCategories(), 'content model supports categories' );
 363         }
 364
 365         /**
 366          * @covers ContentHandler::supportsDirectEditing
 367          */
 368         public function testSupportsDirectEditing() {
 369                 $handler = new DummyContentHandlerForTesting( CONTENT_MODEL_JSON );
 370                 $this->assertFalse( $handler->supportsDirectEditing(), 'direct editing is not supported' );
 371         }
 372
 373         public static function dummyHookHandler( $foo, &$text, $bar ) {
 374                 if ( $text === null || $text === false ) {
 375                         return false;
 376                 }
 377
 378                 $text = strtoupper( $text );
 379
 380                 return true;
 381         }
 382
 383         public function provideGetModelForID() {
 384                 return [
 385                         [ CONTENT_MODEL_WIKITEXT, WikitextContentHandler::class ],
 386                         [ CONTENT_MODEL_JAVASCRIPT, JavaScriptContentHandler::class ],
 387                         [ CONTENT_MODEL_JSON, JsonContentHandler::class ],
 388                         [ CONTENT_MODEL_CSS, CssContentHandler::class ],
 389                         [ CONTENT_MODEL_TEXT, TextContentHandler::class ],
 390                         [ 'testing', DummyContentHandlerForTesting::class ],
 391                         [ 'testing-callbacks', DummyContentHandlerForTesting::class ],
 392                 ];
 393         }
 394
 395         /**
 396          * @covers ContentHandler::getForModelID
 397          * @dataProvider provideGetModelForID
 398          */
 399         public function testGetModelForID( $modelId, $handlerClass ) {
 400                 $handler = ContentHandler::getForModelID( $modelId );
 401
 402                 $this->assertInstanceOf( $handlerClass, $handler );
 403         }
 404
 405         /**
 406          * @covers ContentHandler::getFieldsForSearchIndex
 407          */
 408         public function testGetFieldsForSearchIndex() {
 409                 $searchEngine = $this->newSearchEngine();
 410
 411                 $handler = ContentHandler::getForModelID( CONTENT_MODEL_WIKITEXT );
 412
 413                 $fields = $handler->getFieldsForSearchIndex( $searchEngine );
 414
 415                 $this->assertArrayHasKey( 'category', $fields );
 416                 $this->assertArrayHasKey( 'external_link', $fields );
 417                 $this->assertArrayHasKey( 'outgoing_link', $fields );
 418                 $this->assertArrayHasKey( 'template', $fields );
 419                 $this->assertArrayHasKey( 'content_model', $fields );
 420         }
 421
 422         private function newSearchEngine() {
 423                 $searchEngine = $this->getMockBuilder( SearchEngine::class )
 424                         ->getMock();
 425
 426                 $searchEngine->expects( $this->any() )
 427                         ->method( 'makeSearchFieldMapping' )
 428                         ->will( $this->returnCallback( function ( $name, $type ) {
 429                                         return new DummySearchIndexFieldDefinition( $name, $type );
 430                         } ) );
 431
 432                 return $searchEngine;
 433         }
 434
 435         /**
 436          * @covers ContentHandler::getDataForSearchIndex
 437          */
 438         public function testDataIndexFields() {
 439                 $mockEngine = $this->createMock( SearchEngine::class );
 440                 $title = Title::newFromText( 'Not_Main_Page', NS_MAIN );
 441                 $page = new WikiPage( $title );
 442
 443                 $this->setTemporaryHook( 'SearchDataForIndex',
 444                         function (
 445                                 &$fields,
 446                                 ContentHandler $handler,
 447                                 WikiPage $page,
 448                                 ParserOutput $output,
 449                                 SearchEngine $engine
 450                         ) {
 451                                 $fields['testDataField'] = 'test content';
 452                         } );
 453
 454                 $output = $page->getContent()->getParserOutput( $title );
 455                 $data = $page->getContentHandler()->getDataForSearchIndex( $page, $output, $mockEngine );
 456                 $this->assertArrayHasKey( 'text', $data );
 457                 $this->assertArrayHasKey( 'text_bytes', $data );
 458                 $this->assertArrayHasKey( 'language', $data );
 459                 $this->assertArrayHasKey( 'testDataField', $data );
 460                 $this->assertEquals( 'test content', $data['testDataField'] );
 461                 $this->assertEquals( 'wikitext', $data['content_model'] );
 462         }
 463
 464         /**
 465          * @covers ContentHandler::getParserOutputForIndexing
 466          */
 467         public function testParserOutputForIndexing() {
 468                 $title = Title::newFromText( 'Smithee', NS_MAIN );
 469                 $page = new WikiPage( $title );
 470
 471                 $out = $page->getContentHandler()->getParserOutputForIndexing( $page );
 472                 $this->assertInstanceOf( ParserOutput::class, $out );
 473                 $this->assertContains( 'one who smiths', $out->getRawText() );
 474         }
 475
 476         /**
 477          * @covers ContentHandler::getContentModels
 478          */
 479         public function testGetContentModelsHook() {
 480                 $this->setTemporaryHook( 'GetContentModels', function ( &$models ) {
 481                         $models[] = 'Ferrari';
 482                 } );
 483                 $this->assertContains( 'Ferrari', ContentHandler::getContentModels() );
 484         }
 485
 486         /**
 487          * @covers ContentHandler::getSlotDiffRenderer
 488          */
 489         public function testGetSlotDiffRenderer_default() {
 490                 $this->mergeMwGlobalArrayValue( 'wgHooks', [
 491                         'GetSlotDiffRenderer' => [],
 492                 ] );
 493
 494                 // test default renderer
 495                 $contentHandler = new WikitextContentHandler( CONTENT_MODEL_WIKITEXT );
 496                 $slotDiffRenderer = $contentHandler->getSlotDiffRenderer( RequestContext::getMain() );
 497                 $this->assertInstanceOf( TextSlotDiffRenderer::class, $slotDiffRenderer );
 498         }
 499
 500         /**
 501          * @covers ContentHandler::getSlotDiffRenderer
 502          */
 503         public function testGetSlotDiffRenderer_bc() {
 504                 $this->mergeMwGlobalArrayValue( 'wgHooks', [
 505                         'GetSlotDiffRenderer' => [],
 506                 ] );
 507
 508                 // test B/C renderer
 509                 $customDifferenceEngine = $this->getMockBuilder( DifferenceEngine::class )
 510                         ->disableOriginalConstructor()
 511                         ->getMock();
 512                 // hack to track object identity across cloning
 513                 $customDifferenceEngine->objectId = 12345;
 514                 $customContentHandler = $this->getMockBuilder( ContentHandler::class )
 515                         ->setConstructorArgs( [ 'foo', [] ] )
 516                         ->setMethods( [ 'createDifferenceEngine' ] )
 517                         ->getMockForAbstractClass();
 518                 $customContentHandler->expects( $this->any() )
 519                         ->method( 'createDifferenceEngine' )
 520                         ->willReturn( $customDifferenceEngine );
 521                 /** @var $customContentHandler ContentHandler */
 522                 $slotDiffRenderer = $customContentHandler->getSlotDiffRenderer( RequestContext::getMain() );
 523                 $this->assertInstanceOf( DifferenceEngineSlotDiffRenderer::class, $slotDiffRenderer );
 524                 $this->assertSame(
 525                         $customDifferenceEngine->objectId,
 526                         TestingAccessWrapper::newFromObject( $slotDiffRenderer )->differenceEngine->objectId
 527                 );
 528         }
 529
 530         /**
 531          * @covers ContentHandler::getSlotDiffRenderer
 532          */
 533         public function testGetSlotDiffRenderer_nobc() {
 534                 $this->mergeMwGlobalArrayValue( 'wgHooks', [
 535                         'GetSlotDiffRenderer' => [],
 536                 ] );
 537
 538                 // test that B/C renderer does not get used when getSlotDiffRendererInternal is overridden
 539                 $customDifferenceEngine = $this->getMockBuilder( DifferenceEngine::class )
 540                         ->disableOriginalConstructor()
 541                         ->getMock();
 542                 $customSlotDiffRenderer = $this->getMockBuilder( SlotDiffRenderer::class )
 543                         ->disableOriginalConstructor()
 544                         ->getMockForAbstractClass();
 545                 $customContentHandler2 = $this->getMockBuilder( ContentHandler::class )
 546                         ->setConstructorArgs( [ 'bar', [] ] )
 547                         ->setMethods( [ 'createDifferenceEngine', 'getSlotDiffRendererInternal' ] )
 548                         ->getMockForAbstractClass();
 549                 $customContentHandler2->expects( $this->any() )
 550                         ->method( 'createDifferenceEngine' )
 551                         ->willReturn( $customDifferenceEngine );
 552                 $customContentHandler2->expects( $this->any() )
 553                         ->method( 'getSlotDiffRendererInternal' )
 554                         ->willReturn( $customSlotDiffRenderer );
 555                 /** @var $customContentHandler2 ContentHandler */
 556                 $slotDiffRenderer = $customContentHandler2->getSlotDiffRenderer( RequestContext::getMain() );
 557                 $this->assertSame( $customSlotDiffRenderer, $slotDiffRenderer );
 558         }
 559
 560         /**
 561          * @covers ContentHandler::getSlotDiffRenderer
 562          */
 563         public function testGetSlotDiffRenderer_hook() {
 564                 $this->mergeMwGlobalArrayValue( 'wgHooks', [
 565                         'GetSlotDiffRenderer' => [],
 566                 ] );
 567
 568                 // test that the hook handler takes precedence
 569                 $customDifferenceEngine = $this->getMockBuilder( DifferenceEngine::class )
 570                         ->disableOriginalConstructor()
 571                         ->getMock();
 572                 $customContentHandler = $this->getMockBuilder( ContentHandler::class )
 573                         ->setConstructorArgs( [ 'foo', [] ] )
 574                         ->setMethods( [ 'createDifferenceEngine' ] )
 575                         ->getMockForAbstractClass();
 576                 $customContentHandler->expects( $this->any() )
 577                         ->method( 'createDifferenceEngine' )
 578                         ->willReturn( $customDifferenceEngine );
 579                 /** @var $customContentHandler ContentHandler */
 580
 581                 $customSlotDiffRenderer = $this->getMockBuilder( SlotDiffRenderer::class )
 582                         ->disableOriginalConstructor()
 583                         ->getMockForAbstractClass();
 584                 $customContentHandler2 = $this->getMockBuilder( ContentHandler::class )
 585                         ->setConstructorArgs( [ 'bar', [] ] )
 586                         ->setMethods( [ 'createDifferenceEngine', 'getSlotDiffRendererInternal' ] )
 587                         ->getMockForAbstractClass();
 588                 $customContentHandler2->expects( $this->any() )
 589                         ->method( 'createDifferenceEngine' )
 590                         ->willReturn( $customDifferenceEngine );
 591                 $customContentHandler2->expects( $this->any() )
 592                         ->method( 'getSlotDiffRendererInternal' )
 593                         ->willReturn( $customSlotDiffRenderer );
 594                 /** @var $customContentHandler2 ContentHandler */
 595
 596                 $customSlotDiffRenderer2 = $this->getMockBuilder( SlotDiffRenderer::class )
 597                         ->disableOriginalConstructor()
 598                         ->getMockForAbstractClass();
 599                 $this->setTemporaryHook( 'GetSlotDiffRenderer',
 600                         function ( $handler, &$slotDiffRenderer ) use ( $customSlotDiffRenderer2 ) {
 601                                 $slotDiffRenderer = $customSlotDiffRenderer2;
 602                         } );
 603
 604                 $slotDiffRenderer = $customContentHandler->getSlotDiffRenderer( RequestContext::getMain() );
 605                 $this->assertSame( $customSlotDiffRenderer2, $slotDiffRenderer );
 606                 $slotDiffRenderer = $customContentHandler2->getSlotDiffRenderer( RequestContext::getMain() );
 607                 $this->assertSame( $customSlotDiffRenderer2, $slotDiffRenderer );
 608         }
 609
 610 }