tests/phpunit/includes/RevisionIntegrationTest.php

   1 <?php
   2
   3 /**
   4  * @group ContentHandler
   5  * @group Database
   6  *
   7  * @group medium
   8  */
   9 class RevisionIntegrationTest extends MediaWikiTestCase {
  10
  11         /**
  12          * @var WikiPage $testPage
  13          */
  14         private $testPage;
  15
  16         public function __construct( $name = null, array $data = [], $dataName = '' ) {
  17                 parent::__construct( $name, $data, $dataName );
  18
  19                 $this->tablesUsed = array_merge( $this->tablesUsed,
  20                         [
  21                                 'page',
  22                                 'revision',
  23                                 'ip_changes',
  24                                 'text',
  25                                 'archive',
  26
  27                                 'recentchanges',
  28                                 'logging',
  29
  30                                 'page_props',
  31                                 'pagelinks',
  32                                 'categorylinks',
  33                                 'langlinks',
  34                                 'externallinks',
  35                                 'imagelinks',
  36                                 'templatelinks',
  37                                 'iwlinks'
  38                         ]
  39                 );
  40         }
  41
  42         protected function setUp() {
  43                 global $wgContLang;
  44
  45                 parent::setUp();
  46
  47                 $this->mergeMwGlobalArrayValue(
  48                         'wgExtraNamespaces',
  49                         [
  50                                 12312 => 'Dummy',
  51                                 12313 => 'Dummy_talk',
  52                         ]
  53                 );
  54
  55                 $this->mergeMwGlobalArrayValue(
  56                         'wgNamespaceContentModels',
  57                         [
  58                                 12312 => DummyContentForTesting::MODEL_ID,
  59                         ]
  60                 );
  61
  62                 $this->mergeMwGlobalArrayValue(
  63                         'wgContentHandlers',
  64                         [
  65                                 DummyContentForTesting::MODEL_ID => 'DummyContentHandlerForTesting',
  66                                 RevisionTestModifyableContent::MODEL_ID => 'RevisionTestModifyableContentHandler',
  67                         ]
  68                 );
  69
  70                 MWNamespace::clearCaches();
  71                 // Reset namespace cache
  72                 $wgContLang->resetNamespaces();
  73                 if ( !$this->testPage ) {
  74                         $this->testPage = WikiPage::factory( Title::newFromText( 'UTPage' ) );
  75                 }
  76         }
  77
  78         protected function tearDown() {
  79                 global $wgContLang;
  80
  81                 parent::tearDown();
  82
  83                 MWNamespace::clearCaches();
  84                 // Reset namespace cache
  85                 $wgContLang->resetNamespaces();
  86         }
  87
  88         private function makeRevisionWithProps( $props = null ) {
  89                 if ( $props === null ) {
  90                         $props = [];
  91                 }
  92
  93                 if ( !isset( $props['content'] ) && !isset( $props['text'] ) ) {
  94                         $props['text'] = 'Lorem Ipsum';
  95                 }
  96
  97                 if ( !isset( $props['comment'] ) ) {
  98                         $props['comment'] = 'just a test';
  99                 }
 100
 101                 if ( !isset( $props['page'] ) ) {
 102                         $props['page'] = $this->testPage->getId();
 103                 }
 104
 105                 $rev = new Revision( $props );
 106
 107                 $dbw = wfGetDB( DB_MASTER );
 108                 $rev->insertOn( $dbw );
 109
 110                 return $rev;
 111         }
 112
 113         /**
 114          * @param string $titleString
 115          * @param string $text
 116          * @param string|null $model
 117          *
 118          * @return WikiPage
 119          */
 120         private function createPage( $titleString, $text, $model = null ) {
 121                 if ( !preg_match( '/:/', $titleString ) &&
 122                         ( $model === null || $model === CONTENT_MODEL_WIKITEXT )
 123                 ) {
 124                         $ns = $this->getDefaultWikitextNS();
 125                         $titleString = MWNamespace::getCanonicalName( $ns ) . ':' . $titleString;
 126                 }
 127
 128                 $title = Title::newFromText( $titleString );
 129                 $wikipage = new WikiPage( $title );
 130
 131                 // Delete the article if it already exists
 132                 if ( $wikipage->exists() ) {
 133                         $wikipage->doDeleteArticle( "done" );
 134                 }
 135
 136                 $content = ContentHandler::makeContent( $text, $title, $model );
 137                 $wikipage->doEditContent( $content, __METHOD__, EDIT_NEW );
 138
 139                 return $wikipage;
 140         }
 141
 142         private function assertRevEquals( Revision $orig, Revision $rev = null ) {
 143                 $this->assertNotNull( $rev, 'missing revision' );
 144
 145                 $this->assertEquals( $orig->getId(), $rev->getId() );
 146                 $this->assertEquals( $orig->getPage(), $rev->getPage() );
 147                 $this->assertEquals( $orig->getTimestamp(), $rev->getTimestamp() );
 148                 $this->assertEquals( $orig->getUser(), $rev->getUser() );
 149                 $this->assertEquals( $orig->getContentModel(), $rev->getContentModel() );
 150                 $this->assertEquals( $orig->getContentFormat(), $rev->getContentFormat() );
 151                 $this->assertEquals( $orig->getSha1(), $rev->getSha1() );
 152         }
 153
 154         /**
 155          * @covers Revision::__construct
 156          */
 157         public function testConstructFromRow() {
 158                 $latestRevisionId = $this->testPage->getLatest();
 159                 $latestRevision = $this->testPage->getRevision();
 160
 161                 $dbr = wfGetDB( DB_REPLICA );
 162                 $res = $dbr->select(
 163                         'revision',
 164                         Revision::selectFields(),
 165                         [ 'rev_id' => $latestRevisionId ]
 166                 );
 167                 $this->assertTrue( is_object( $res ), 'query failed' );
 168
 169                 $row = $res->fetchObject();
 170                 $res->free();
 171
 172                 $this->assertRevEquals( $latestRevision, new Revision( $row ) );
 173         }
 174
 175         /**
 176          * @covers Revision::newFromTitle
 177          */
 178         public function testNewFromTitle_withoutId() {
 179                 $latestRevId = $this->testPage->getLatest();
 180
 181                 $rev = Revision::newFromTitle( $this->testPage->getTitle() );
 182
 183                 $this->assertTrue( $this->testPage->getTitle()->equals( $rev->getTitle() ) );
 184                 $this->assertEquals( $latestRevId, $rev->getId() );
 185         }
 186
 187         /**
 188          * @covers Revision::newFromTitle
 189          */
 190         public function testNewFromTitle_withId() {
 191                 $latestRevId = $this->testPage->getLatest();
 192
 193                 $rev = Revision::newFromTitle( $this->testPage->getTitle(), $latestRevId );
 194
 195                 $this->assertTrue( $this->testPage->getTitle()->equals( $rev->getTitle() ) );
 196                 $this->assertEquals( $latestRevId, $rev->getId() );
 197         }
 198
 199         /**
 200          * @covers Revision::newFromTitle
 201          */
 202         public function testNewFromTitle_withBadId() {
 203                 $latestRevId = $this->testPage->getLatest();
 204
 205                 $rev = Revision::newFromTitle( $this->testPage->getTitle(), $latestRevId + 1 );
 206
 207                 $this->assertNull( $rev );
 208         }
 209
 210         /**
 211          * @covers Revision::newFromRow
 212          */
 213         public function testNewFromRow() {
 214                 $orig = $this->makeRevisionWithProps();
 215
 216                 $dbr = wfGetDB( DB_REPLICA );
 217                 $res = $dbr->select( 'revision', Revision::selectFields(), [ 'rev_id' => $orig->getId() ] );
 218                 $this->assertTrue( is_object( $res ), 'query failed' );
 219
 220                 $row = $res->fetchObject();
 221                 $res->free();
 222
 223                 $rev = Revision::newFromRow( $row );
 224
 225                 $this->assertRevEquals( $orig, $rev );
 226         }
 227
 228         /**
 229          * @covers Revision::newFromArchiveRow
 230          */
 231         public function testNewFromArchiveRow() {
 232                 $page = $this->createPage(
 233                         'RevisionStorageTest_testNewFromArchiveRow',
 234                         'Lorem Ipsum',
 235                         CONTENT_MODEL_WIKITEXT
 236                 );
 237                 $orig = $page->getRevision();
 238                 $page->doDeleteArticle( 'test Revision::newFromArchiveRow' );
 239
 240                 $dbr = wfGetDB( DB_REPLICA );
 241                 $res = $dbr->select(
 242                         'archive', Revision::selectArchiveFields(), [ 'ar_rev_id' => $orig->getId() ]
 243                 );
 244                 $this->assertTrue( is_object( $res ), 'query failed' );
 245
 246                 $row = $res->fetchObject();
 247                 $res->free();
 248
 249                 $rev = Revision::newFromArchiveRow( $row );
 250
 251                 $this->assertRevEquals( $orig, $rev );
 252         }
 253
 254         /**
 255          * @covers Revision::newFromId
 256          */
 257         public function testNewFromId() {
 258                 $orig = $this->testPage->getRevision();
 259                 $rev = Revision::newFromId( $orig->getId() );
 260                 $this->assertRevEquals( $orig, $rev );
 261         }
 262
 263         /**
 264          * @covers Revision::fetchRevision
 265          */
 266         public function testFetchRevision() {
 267                 // Hidden process cache assertion below
 268                 $this->testPage->getRevision()->getId();
 269
 270                 $this->testPage->doEditContent( new WikitextContent( __METHOD__ ), __METHOD__ );
 271                 $id = $this->testPage->getRevision()->getId();
 272
 273                 $res = Revision::fetchRevision( $this->testPage->getTitle() );
 274
 275                 # note: order is unspecified
 276                 $rows = [];
 277                 while ( ( $row = $res->fetchObject() ) ) {
 278                         $rows[$row->rev_id] = $row;
 279                 }
 280
 281                 $this->assertEquals( 1, count( $rows ), 'expected exactly one revision' );
 282                 $this->assertArrayHasKey( $id, $rows, 'missing revision with id ' . $id );
 283         }
 284
 285         /**
 286          * @covers Revision::selectFields
 287          */
 288         public function testSelectFields() {
 289                 global $wgContentHandlerUseDB;
 290
 291                 $fields = Revision::selectFields();
 292
 293                 $this->assertTrue( in_array( 'rev_id', $fields ), 'missing rev_id in list of fields' );
 294                 $this->assertTrue( in_array( 'rev_page', $fields ), 'missing rev_page in list of fields' );
 295                 $this->assertTrue(
 296                         in_array( 'rev_timestamp', $fields ),
 297                         'missing rev_timestamp in list of fields'
 298                 );
 299                 $this->assertTrue( in_array( 'rev_user', $fields ), 'missing rev_user in list of fields' );
 300
 301                 if ( $wgContentHandlerUseDB ) {
 302                         $this->assertTrue( in_array( 'rev_content_model', $fields ),
 303                                 'missing rev_content_model in list of fields' );
 304                         $this->assertTrue( in_array( 'rev_content_format', $fields ),
 305                                 'missing rev_content_format in list of fields' );
 306                 }
 307         }
 308
 309         /**
 310          * @covers Revision::getPage
 311          */
 312         public function testGetPage() {
 313                 $page = $this->testPage;
 314
 315                 $orig = $this->makeRevisionWithProps( [ 'page' => $page->getId() ] );
 316                 $rev = Revision::newFromId( $orig->getId() );
 317
 318                 $this->assertEquals( $page->getId(), $rev->getPage() );
 319         }
 320
 321         /**
 322          * @covers Revision::isCurrent
 323          */
 324         public function testIsCurrent() {
 325                 $rev1 = $this->testPage->getRevision();
 326
 327                 # @todo find out if this should be true
 328                 # $this->assertTrue( $rev1->isCurrent() );
 329
 330                 $rev1x = Revision::newFromId( $rev1->getId() );
 331                 $this->assertTrue( $rev1x->isCurrent() );
 332
 333                 $this->testPage->doEditContent( new WikitextContent( __METHOD__ ), __METHOD__ );
 334                 $rev2 = $this->testPage->getRevision();
 335
 336                 # @todo find out if this should be true
 337                 # $this->assertTrue( $rev2->isCurrent() );
 338
 339                 $rev1x = Revision::newFromId( $rev1->getId() );
 340                 $this->assertFalse( $rev1x->isCurrent() );
 341
 342                 $rev2x = Revision::newFromId( $rev2->getId() );
 343                 $this->assertTrue( $rev2x->isCurrent() );
 344         }
 345
 346         /**
 347          * @covers Revision::getPrevious
 348          */
 349         public function testGetPrevious() {
 350                 $oldestRevision = $this->testPage->getOldestRevision();
 351                 $latestRevision = $this->testPage->getLatest();
 352
 353                 $this->assertNull( $oldestRevision->getPrevious() );
 354
 355                 $this->testPage->doEditContent( new WikitextContent( __METHOD__ ), __METHOD__ );
 356                 $newRevision = $this->testPage->getRevision();
 357
 358                 $this->assertNotNull( $newRevision->getPrevious() );
 359                 $this->assertEquals( $latestRevision, $newRevision->getPrevious()->getId() );
 360         }
 361
 362         /**
 363          * @covers Revision::getNext
 364          */
 365         public function testGetNext() {
 366                 $rev1 = $this->testPage->getRevision();
 367
 368                 $this->assertNull( $rev1->getNext() );
 369
 370                 $this->testPage->doEditContent( new WikitextContent( __METHOD__ ), __METHOD__ );
 371                 $rev2 = $this->testPage->getRevision();
 372
 373                 $this->assertNotNull( $rev1->getNext() );
 374                 $this->assertEquals( $rev2->getId(), $rev1->getNext()->getId() );
 375         }
 376
 377         /**
 378          * @covers Revision::newNullRevision
 379          */
 380         public function testNewNullRevision() {
 381                 $this->testPage->doEditContent( new WikitextContent( __METHOD__ ), __METHOD__ );
 382                 $orig = $this->testPage->getRevision();
 383
 384                 $dbw = wfGetDB( DB_MASTER );
 385                 $rev = Revision::newNullRevision( $dbw, $this->testPage->getId(), 'a null revision', false );
 386
 387                 $this->assertNotEquals( $orig->getId(), $rev->getId(),
 388                         'new null revision should have a different id from the original revision' );
 389                 $this->assertEquals( $orig->getTextId(), $rev->getTextId(),
 390                         'new null revision should have the same text id as the original revision' );
 391                 $this->assertEquals( __METHOD__, $rev->getContent()->getNativeData() );
 392         }
 393
 394         /**
 395          * @covers Revision::insertOn
 396          */
 397         public function testInsertOn() {
 398                 $ip = '2600:387:ed7:947e:8c16:a1ad:dd34:1dd7';
 399
 400                 $orig = $this->makeRevisionWithProps( [
 401                         'user_text' => $ip
 402                 ] );
 403
 404                 // Make sure the revision was copied to ip_changes
 405                 $dbr = wfGetDB( DB_REPLICA );
 406                 $res = $dbr->select( 'ip_changes', '*', [ 'ipc_rev_id' => $orig->getId() ] );
 407                 $row = $res->fetchObject();
 408
 409                 $this->assertEquals( IP::toHex( $ip ), $row->ipc_hex );
 410                 $this->assertEquals( $orig->getTimestamp(), $row->ipc_rev_timestamp );
 411         }
 412
 413         public static function provideUserWasLastToEdit() {
 414                 yield 'actually the last edit' => [ 3, true ];
 415                 yield 'not the current edit, but still by this user' => [ 2, true ];
 416                 yield 'edit by another user' => [ 1, false ];
 417                 yield 'first edit, by this user, but another user edited in the mean time' => [ 0, false ];
 418         }
 419
 420         /**
 421          * @dataProvider provideUserWasLastToEdit
 422          */
 423         public function testUserWasLastToEdit( $sinceIdx, $expectedLast ) {
 424                 $userA = User::newFromName( "RevisionStorageTest_userA" );
 425                 $userB = User::newFromName( "RevisionStorageTest_userB" );
 426
 427                 if ( $userA->getId() === 0 ) {
 428                         $userA = User::createNew( $userA->getName() );
 429                 }
 430
 431                 if ( $userB->getId() === 0 ) {
 432                         $userB = User::createNew( $userB->getName() );
 433                 }
 434
 435                 $ns = $this->getDefaultWikitextNS();
 436
 437                 $dbw = wfGetDB( DB_MASTER );
 438                 $revisions = [];
 439
 440                 // create revisions -----------------------------
 441                 $page = WikiPage::factory( Title::newFromText(
 442                         'RevisionStorageTest_testUserWasLastToEdit', $ns ) );
 443                 $page->insertOn( $dbw );
 444
 445                 $revisions[0] = new Revision( [
 446                         'page' => $page->getId(),
 447                         // we need the title to determine the page's default content model
 448                         'title' => $page->getTitle(),
 449                         'timestamp' => '20120101000000',
 450                         'user' => $userA->getId(),
 451                         'text' => 'zero',
 452                         'content_model' => CONTENT_MODEL_WIKITEXT,
 453                         'summary' => 'edit zero'
 454                 ] );
 455                 $revisions[0]->insertOn( $dbw );
 456
 457                 $revisions[1] = new Revision( [
 458                         'page' => $page->getId(),
 459                         // still need the title, because $page->getId() is 0 (there's no entry in the page table)
 460                         'title' => $page->getTitle(),
 461                         'timestamp' => '20120101000100',
 462                         'user' => $userA->getId(),
 463                         'text' => 'one',
 464                         'content_model' => CONTENT_MODEL_WIKITEXT,
 465                         'summary' => 'edit one'
 466                 ] );
 467                 $revisions[1]->insertOn( $dbw );
 468
 469                 $revisions[2] = new Revision( [
 470                         'page' => $page->getId(),
 471                         'title' => $page->getTitle(),
 472                         'timestamp' => '20120101000200',
 473                         'user' => $userB->getId(),
 474                         'text' => 'two',
 475                         'content_model' => CONTENT_MODEL_WIKITEXT,
 476                         'summary' => 'edit two'
 477                 ] );
 478                 $revisions[2]->insertOn( $dbw );
 479
 480                 $revisions[3] = new Revision( [
 481                         'page' => $page->getId(),
 482                         'title' => $page->getTitle(),
 483                         'timestamp' => '20120101000300',
 484                         'user' => $userA->getId(),
 485                         'text' => 'three',
 486                         'content_model' => CONTENT_MODEL_WIKITEXT,
 487                         'summary' => 'edit three'
 488                 ] );
 489                 $revisions[3]->insertOn( $dbw );
 490
 491                 $revisions[4] = new Revision( [
 492                         'page' => $page->getId(),
 493                         'title' => $page->getTitle(),
 494                         'timestamp' => '20120101000200',
 495                         'user' => $userA->getId(),
 496                         'text' => 'zero',
 497                         'content_model' => CONTENT_MODEL_WIKITEXT,
 498                         'summary' => 'edit four'
 499                 ] );
 500                 $revisions[4]->insertOn( $dbw );
 501
 502                 // test it ---------------------------------
 503                 $since = $revisions[$sinceIdx]->getTimestamp();
 504
 505                 $wasLast = Revision::userWasLastToEdit( $dbw, $page->getId(), $userA->getId(), $since );
 506
 507                 $this->assertEquals( $expectedLast, $wasLast );
 508         }
 509
 510         /**
 511          * @param string $text
 512          * @param string $title
 513          * @param string $model
 514          * @param string $format
 515          *
 516          * @return Revision
 517          */
 518         private function newTestRevision( $text, $title = "Test",
 519                 $model = CONTENT_MODEL_WIKITEXT, $format = null
 520         ) {
 521                 if ( is_string( $title ) ) {
 522                         $title = Title::newFromText( $title );
 523                 }
 524
 525                 $content = ContentHandler::makeContent( $text, $title, $model, $format );
 526
 527                 $rev = new Revision(
 528                         [
 529                                 'id' => 42,
 530                                 'page' => 23,
 531                                 'title' => $title,
 532
 533                                 'content' => $content,
 534                                 'length' => $content->getSize(),
 535                                 'comment' => "testing",
 536                                 'minor_edit' => false,
 537
 538                                 'content_format' => $format,
 539                         ]
 540                 );
 541
 542                 return $rev;
 543         }
 544
 545         public function provideGetContentModel() {
 546                 // NOTE: we expect the help namespace to always contain wikitext
 547                 return [
 548                         [ 'hello world', 'Help:Hello', null, null, CONTENT_MODEL_WIKITEXT ],
 549                         [ 'hello world', 'User:hello/there.css', null, null, CONTENT_MODEL_CSS ],
 550                         [ serialize( 'hello world' ), 'Dummy:Hello', null, null, DummyContentForTesting::MODEL_ID ],
 551                 ];
 552         }
 553
 554         /**
 555          * @dataProvider provideGetContentModel
 556          * @covers Revision::getContentModel
 557          */
 558         public function testGetContentModel( $text, $title, $model, $format, $expectedModel ) {
 559                 $rev = $this->newTestRevision( $text, $title, $model, $format );
 560
 561                 $this->assertEquals( $expectedModel, $rev->getContentModel() );
 562         }
 563
 564         public function provideGetContentFormat() {
 565                 // NOTE: we expect the help namespace to always contain wikitext
 566                 return [
 567                         [ 'hello world', 'Help:Hello', null, null, CONTENT_FORMAT_WIKITEXT ],
 568                         [ 'hello world', 'Help:Hello', CONTENT_MODEL_CSS, null, CONTENT_FORMAT_CSS ],
 569                         [ 'hello world', 'User:hello/there.css', null, null, CONTENT_FORMAT_CSS ],
 570                         [ serialize( 'hello world' ), 'Dummy:Hello', null, null, DummyContentForTesting::MODEL_ID ],
 571                 ];
 572         }
 573
 574         /**
 575          * @dataProvider provideGetContentFormat
 576          * @covers Revision::getContentFormat
 577          */
 578         public function testGetContentFormat( $text, $title, $model, $format, $expectedFormat ) {
 579                 $rev = $this->newTestRevision( $text, $title, $model, $format );
 580
 581                 $this->assertEquals( $expectedFormat, $rev->getContentFormat() );
 582         }
 583
 584         public function provideGetContentHandler() {
 585                 // NOTE: we expect the help namespace to always contain wikitext
 586                 return [
 587                         [ 'hello world', 'Help:Hello', null, null, 'WikitextContentHandler' ],
 588                         [ 'hello world', 'User:hello/there.css', null, null, 'CssContentHandler' ],
 589                         [ serialize( 'hello world' ), 'Dummy:Hello', null, null, 'DummyContentHandlerForTesting' ],
 590                 ];
 591         }
 592
 593         /**
 594          * @dataProvider provideGetContentHandler
 595          * @covers Revision::getContentHandler
 596          */
 597         public function testGetContentHandler( $text, $title, $model, $format, $expectedClass ) {
 598                 $rev = $this->newTestRevision( $text, $title, $model, $format );
 599
 600                 $this->assertEquals( $expectedClass, get_class( $rev->getContentHandler() ) );
 601         }
 602
 603         public function provideGetContent() {
 604                 // NOTE: we expect the help namespace to always contain wikitext
 605                 return [
 606                         [ 'hello world', 'Help:Hello', null, null, Revision::FOR_PUBLIC, 'hello world' ],
 607                         [
 608                                 serialize( 'hello world' ),
 609                                 'Hello',
 610                                 DummyContentForTesting::MODEL_ID,
 611                                 null,
 612                                 Revision::FOR_PUBLIC,
 613                                 serialize( 'hello world' )
 614                         ],
 615                         [
 616                                 serialize( 'hello world' ),
 617                                 'Dummy:Hello',
 618                                 null,
 619                                 null,
 620                                 Revision::FOR_PUBLIC,
 621                                 serialize( 'hello world' )
 622                         ],
 623                 ];
 624         }
 625
 626         /**
 627          * @dataProvider provideGetContent
 628          * @covers Revision::getContent
 629          */
 630         public function testGetContent( $text, $title, $model, $format,
 631                 $audience, $expectedSerialization
 632         ) {
 633                 $rev = $this->newTestRevision( $text, $title, $model, $format );
 634                 $content = $rev->getContent( $audience );
 635
 636                 $this->assertEquals(
 637                         $expectedSerialization,
 638                         is_null( $content ) ? null : $content->serialize( $format )
 639                 );
 640         }
 641
 642         /**
 643          * @covers Revision::getContent
 644          */
 645         public function testGetContent_failure() {
 646                 $rev = new Revision( [
 647                         'page' => $this->testPage->getId(),
 648                         'content_model' => $this->testPage->getContentModel(),
 649                         'text_id' => 123456789, // not in the test DB
 650                 ] );
 651
 652                 $this->assertNull( $rev->getContent(),
 653                         "getContent() should return null if the revision's text blob could not be loaded." );
 654
 655                 // NOTE: check this twice, once for lazy initialization, and once with the cached value.
 656                 $this->assertNull( $rev->getContent(),
 657                         "getContent() should return null if the revision's text blob could not be loaded." );
 658         }
 659
 660         public function provideGetSize() {
 661                 return [
 662                         [ "hello world.", CONTENT_MODEL_WIKITEXT, 12 ],
 663                         [ serialize( "hello world." ), DummyContentForTesting::MODEL_ID, 12 ],
 664                 ];
 665         }
 666
 667         /**
 668          * @covers Revision::getSize
 669          * @dataProvider provideGetSize
 670          */
 671         public function testGetSize( $text, $model, $expected_size ) {
 672                 $rev = $this->newTestRevision( $text, 'RevisionTest_testGetSize', $model );
 673                 $this->assertEquals( $expected_size, $rev->getSize() );
 674         }
 675
 676         public function provideGetSha1() {
 677                 return [
 678                         [ "hello world.", CONTENT_MODEL_WIKITEXT, Revision::base36Sha1( "hello world." ) ],
 679                         [
 680                                 serialize( "hello world." ),
 681                                 DummyContentForTesting::MODEL_ID,
 682                                 Revision::base36Sha1( serialize( "hello world." ) )
 683                         ],
 684                 ];
 685         }
 686
 687         /**
 688          * @covers Revision::getSha1
 689          * @dataProvider provideGetSha1
 690          */
 691         public function testGetSha1( $text, $model, $expected_hash ) {
 692                 $rev = $this->newTestRevision( $text, 'RevisionTest_testGetSha1', $model );
 693                 $this->assertEquals( $expected_hash, $rev->getSha1() );
 694         }
 695
 696         /**
 697          * Tests whether $rev->getContent() returns a clone when needed.
 698          *
 699          * @covers Revision::getContent
 700          */
 701         public function testGetContentClone() {
 702                 $content = new RevisionTestModifyableContent( "foo" );
 703
 704                 $rev = new Revision(
 705                         [
 706                                 'id' => 42,
 707                                 'page' => 23,
 708                                 'title' => Title::newFromText( "testGetContentClone_dummy" ),
 709
 710                                 'content' => $content,
 711                                 'length' => $content->getSize(),
 712                                 'comment' => "testing",
 713                                 'minor_edit' => false,
 714                         ]
 715                 );
 716
 717                 /** @var RevisionTestModifyableContent $content */
 718                 $content = $rev->getContent( Revision::RAW );
 719                 $content->setText( "bar" );
 720
 721                 /** @var RevisionTestModifyableContent $content2 */
 722                 $content2 = $rev->getContent( Revision::RAW );
 723                 // content is mutable, expect clone
 724                 $this->assertNotSame( $content, $content2, "expected a clone" );
 725                 // clone should contain the original text
 726                 $this->assertEquals( "foo", $content2->getText() );
 727
 728                 $content2->setText( "bla bla" );
 729                 // clones should be independent
 730                 $this->assertEquals( "bar", $content->getText() );
 731         }
 732
 733         /**
 734          * Tests whether $rev->getContent() returns the same object repeatedly if appropriate.
 735          * @covers Revision::getContent
 736          */
 737         public function testGetContentUncloned() {
 738                 $rev = $this->newTestRevision( "hello", "testGetContentUncloned_dummy", CONTENT_MODEL_WIKITEXT );
 739                 $content = $rev->getContent( Revision::RAW );
 740                 $content2 = $rev->getContent( Revision::RAW );
 741
 742                 // for immutable content like wikitext, this should be the same object
 743                 $this->assertSame( $content, $content2 );
 744         }
 745
 746 }