WikiPageDbTestBase.php

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<?php
 
use MediaWiki\Edit\PreparedEdit;
use MediaWiki\MediaWikiServices;
use MediaWiki\Revision\SlotRecord;
use MediaWiki\Storage\RevisionSlotsUpdate;
use PHPUnit\Framework\MockObject\MockObject;
use Wikimedia\TestingAccessWrapper;
 
abstract class WikiPageDbTestBase extends MediaWikiLangTestCase {
 
    private $pagesToDelete;
 
    public function __construct( $name = null, array $data = [], $dataName = '' ) {
        parent::__construct( $name, $data, $dataName );
 
        $this->tablesUsed = array_merge(
            $this->tablesUsed,
            [ 'page',
                'revision',
                'redirect',
                'archive',
                'category',
                'ip_changes',
                'text',
 
                'recentchanges',
                'logging',
 
                'page_props',
                'pagelinks',
                'categorylinks',
                'langlinks',
                'externallinks',
                'imagelinks',
                'templatelinks',
                'iwlinks' ] );
    }
 
    protected function addCoreDBData() {
        // Blank out. This would fail with a modified schema, and we don't need it.
    }
 
    abstract protected function getMcrMigrationStage();
 
    abstract protected function getMcrTablesToReset();
 
    protected function setUp() {
        parent::setUp();
 
        $this->tablesUsed += $this->getMcrTablesToReset();
 
        $this->setMwGlobals( 'wgContentHandlerUseDB', $this->getContentHandlerUseDB() );
        $this->setMwGlobals(
            'wgMultiContentRevisionSchemaMigrationStage',
            $this->getMcrMigrationStage()
        );
        $this->pagesToDelete = [];
 
        $this->overrideMwServices();
    }
 
    protected function tearDown() {
        foreach ( $this->pagesToDelete as $p ) {
            /* @var $p WikiPage */
 
            try {
                if ( $p->exists() ) {
                    $p->doDeleteArticle( "testing done." );
                }
            } catch ( MWException $ex ) {
                // fail silently
            }
        }
        parent::tearDown();
    }
 
    abstract protected function getContentHandlerUseDB();
 
    private function newPage( $title, $model = null ) {
        if ( is_string( $title ) ) {
            $ns = $this->getDefaultWikitextNS();
            $title = Title::newFromText( $title, $ns );
        }
 
        $p = new WikiPage( $title );
 
        $this->pagesToDelete[] = $p;
 
        return $p;
    }
 
    protected function createPage( $page, $content, $model = null, $user = null ) {
        if ( is_string( $page ) || $page instanceof Title ) {
            $page = $this->newPage( $page, $model );
        }
 
        if ( !$user ) {
            $user = $this->getTestUser()->getUser();
        }
 
        if ( is_string( $content ) ) {
            $content = ContentHandler::makeContent( $content, $page->getTitle(), $model );
        }
 
        if ( !is_array( $content ) ) {
            $content = [ 'main' => $content ];
        }
 
        $updater = $page->newPageUpdater( $user );
 
        foreach ( $content as $role => $cnt ) {
            $updater->setContent( $role, $cnt );
        }
 
        $updater->saveRevision( CommentStoreComment::newUnsavedComment( "testing" ) );
 
        return $page;
    }
 
    public function testPrepareContentForEdit() {
        $user = $this->getTestUser()->getUser();
        $sysop = $this->getTestUser( [ 'sysop' ] )->getUser();
 
        $page = $this->createPage( __METHOD__, __METHOD__, null, $user );
        $title = $page->getTitle();
 
        $content = ContentHandler::makeContent(
            "[[Lorem ipsum]] dolor sit amet, consetetur sadipscing elitr, sed diam "
            . " nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat.",
            $title,
            CONTENT_MODEL_WIKITEXT
        );
        $content2 = ContentHandler::makeContent(
            "At vero eos et accusam et justo duo [[dolores]] et ea rebum. "
            . "Stet clita kasd [[gubergren]], no sea takimata sanctus est. ~~~~",
            $title,
            CONTENT_MODEL_WIKITEXT
        );
 
        $edit = $page->prepareContentForEdit( $content, null, $user, null, false );
 
        $this->assertInstanceOf(
            ParserOptions::class,
            $edit->popts,
            "pops"
        );
        $this->assertContains( '</a>', $edit->output->getText(), "output" );
        $this->assertContains(
            'consetetur sadipscing elitr',
            $edit->output->getText(),
            "output"
        );
 
        $this->assertTrue( $content->equals( $edit->newContent ), "newContent field" );
        $this->assertTrue( $content->equals( $edit->pstContent ), "pstContent field" );
        $this->assertSame( $edit->output, $edit->output, "output field" );
        $this->assertSame( $edit->popts, $edit->popts, "popts field" );
        $this->assertSame( null, $edit->revid, "revid field" );
 
        // Re-using the prepared info if possible
        $sameEdit = $page->prepareContentForEdit( $content, null, $user, null, false );
        $this->assertPreparedEditEquals( $edit, $sameEdit, 'equivalent PreparedEdit' );
        $this->assertSame( $edit->pstContent, $sameEdit->pstContent, 're-use output' );
        $this->assertSame( $edit->output, $sameEdit->output, 're-use output' );
 
        // Not re-using the same PreparedEdit if not possible
        $rev = $page->getRevision();
        $edit2 = $page->prepareContentForEdit( $content2, null, $user, null, false );
        $this->assertPreparedEditNotEquals( $edit, $edit2 );
        $this->assertContains( 'At vero eos', $edit2->pstContent->serialize(), "content" );
 
        // Check pre-safe transform
        $this->assertContains( '[[gubergren]]', $edit2->pstContent->serialize() );
        $this->assertNotContains( '~~~~', $edit2->pstContent->serialize() );
 
        $edit3 = $page->prepareContentForEdit( $content2, null, $sysop, null, false );
        $this->assertPreparedEditNotEquals( $edit2, $edit3 );
 
        // TODO: test with passing revision, then same without revision.
    }
 
    public function testDoEditUpdates() {
        $user = $this->getTestUser()->getUser();
 
        // NOTE: if site stats get out of whack and drop below 0,
        // that causes a DB error during tear-down. So bump the
        // numbers high enough to not drop below 0.
        $siteStatsUpdate = SiteStatsUpdate::factory(
            [ 'edits' => 1000, 'articles' => 1000, 'pages' => 1000 ]
        );
        $siteStatsUpdate->doUpdate();
 
        $page = $this->createPage( __METHOD__, __METHOD__ );
 
        $revision = new Revision(
            [
                'id' => 9989,
                'page' => $page->getId(),
                'title' => $page->getTitle(),
                'comment' => __METHOD__,
                'minor_edit' => true,
                'text' => __METHOD__ . ' [[|foo]][[bar]]', // PST turns [[|foo]] into [[foo]]
                'user' => $user->getId(),
                'user_text' => $user->getName(),
                'timestamp' => '20170707040404',
                'content_model' => CONTENT_MODEL_WIKITEXT,
                'content_format' => CONTENT_FORMAT_WIKITEXT,
            ]
        );
 
        $page->doEditUpdates( $revision, $user );
 
        // TODO: test various options; needs temporary hooks
 
        $dbr = wfGetDB( DB_REPLICA );
        $res = $dbr->select( 'pagelinks', '*', [ 'pl_from' => $page->getId() ] );
        $n = $res->numRows();
        $res->free();
 
        $this->assertEquals( 1, $n, 'pagelinks should contain only one link if PST was not applied' );
    }
 
    public function testDoEditContent() {
        $this->setMwGlobals( 'wgPageCreationLog', true );
 
        $page = $this->newPage( __METHOD__ );
        $title = $page->getTitle();
 
        $user1 = $this->getTestUser()->getUser();
        // Use the confirmed group for user2 to make sure the user is different
        $user2 = $this->getTestUser( [ 'confirmed' ] )->getUser();
 
        $content = ContentHandler::makeContent(
            "[[Lorem ipsum]] dolor sit amet, consetetur sadipscing elitr, sed diam "
                . " nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat.",
            $title,
            CONTENT_MODEL_WIKITEXT
        );
 
        $preparedEditBefore = $page->prepareContentForEdit( $content, null, $user1 );
 
        $status = $page->doEditContent( $content, "[[testing]] 1", EDIT_NEW, false, $user1 );
 
        $this->assertTrue( $status->isOK(), 'OK' );
        $this->assertTrue( $status->value['new'], 'new' );
        $this->assertNotNull( $status->value['revision'], 'revision' );
        $this->assertSame( $status->value['revision']->getId(), $page->getRevision()->getId() );
        $this->assertSame( $status->value['revision']->getSha1(), $page->getRevision()->getSha1() );
        $this->assertTrue( $status->value['revision']->getContent()->equals( $content ), 'equals' );
 
        $rev = $page->getRevision();
        $preparedEditAfter = $page->prepareContentForEdit( $content, $rev, $user1 );
 
        $this->assertNotNull( $rev->getRecentChange() );
        $this->assertSame( $rev->getId(), (int)$rev->getRecentChange()->getAttribute( 'rc_this_oldid' ) );
 
        // make sure that cached ParserOutput gets re-used throughout
        $this->assertSame( $preparedEditBefore->output, $preparedEditAfter->output );
 
        $id = $page->getId();
 
        // Test page creation logging
        $this->assertSelect(
            'logging',
            [ 'log_type', 'log_action' ],
            [ 'log_page' => $id ],
            [ [ 'create', 'create' ] ]
        );
 
        $this->assertTrue( $title->getArticleID() > 0, "Title object should have new page id" );
        $this->assertTrue( $id > 0, "WikiPage should have new page id" );
        $this->assertTrue( $title->exists(), "Title object should indicate that the page now exists" );
        $this->assertTrue( $page->exists(), "WikiPage object should indicate that the page now exists" );
 
        # ------------------------
        $dbr = wfGetDB( DB_REPLICA );
        $res = $dbr->select( 'pagelinks', '*', [ 'pl_from' => $id ] );
        $n = $res->numRows();
        $res->free();
 
        $this->assertEquals( 1, $n, 'pagelinks should contain one link from the page' );
 
        # ------------------------
        $page = new WikiPage( $title );
 
        $retrieved = $page->getContent();
        $this->assertTrue( $content->equals( $retrieved ), 'retrieved content doesn\'t equal original' );
 
        # ------------------------
        $page = new WikiPage( $title );
 
        // try null edit, with a different user
        $status = $page->doEditContent( $content, 'This changes nothing', EDIT_UPDATE, false, $user2 );
        $this->assertTrue( $status->isOK(), 'OK' );
        $this->assertFalse( $status->value['new'], 'new' );
        $this->assertNull( $status->value['revision'], 'revision' );
        $this->assertNotNull( $page->getRevision() );
        $this->assertTrue( $page->getRevision()->getContent()->equals( $content ), 'equals' );
 
        # ------------------------
        $content = ContentHandler::makeContent(
            "At vero eos et accusam et justo duo [[dolores]] et ea rebum. "
                . "Stet clita kasd [[gubergren]], no sea takimata sanctus est. ~~~~",
            $title,
            CONTENT_MODEL_WIKITEXT
        );
 
        $status = $page->doEditContent( $content, "testing 2", EDIT_UPDATE );
        $this->assertTrue( $status->isOK(), 'OK' );
        $this->assertFalse( $status->value['new'], 'new' );
        $this->assertNotNull( $status->value['revision'], 'revision' );
        $this->assertSame( $status->value['revision']->getId(), $page->getRevision()->getId() );
        $this->assertSame( $status->value['revision']->getSha1(), $page->getRevision()->getSha1() );
        $this->assertFalse(
            $status->value['revision']->getContent()->equals( $content ),
            'not equals (PST must substitute signature)'
        );
 
        $rev = $page->getRevision();
        $this->assertNotNull( $rev->getRecentChange() );
        $this->assertSame( $rev->getId(), (int)$rev->getRecentChange()->getAttribute( 'rc_this_oldid' ) );
 
        # ------------------------
        $page = new WikiPage( $title );
 
        $retrieved = $page->getContent();
        $newText = $retrieved->serialize();
        $this->assertContains( '[[gubergren]]', $newText, 'New text must replace old text.' );
        $this->assertNotContains( '~~~~', $newText, 'PST must substitute signature.' );
 
        # ------------------------
        $dbr = wfGetDB( DB_REPLICA );
        $res = $dbr->select( 'pagelinks', '*', [ 'pl_from' => $id ] );
        $n = $res->numRows();
        $res->free();
 
        $this->assertEquals( 2, $n, 'pagelinks should contain two links from the page' );
    }
 
    public function testDoEditContent_twice() {
        $title = Title::newFromText( __METHOD__ );
        $page = WikiPage::factory( $title );
        $content = ContentHandler::makeContent( '$1 van $2', $title );
 
        // Make sure we can do the exact same save twice.
        // This tests checks that internal caches are reset as appropriate.
        $status1 = $page->doEditContent( $content, __METHOD__ );
        $status2 = $page->doEditContent( $content, __METHOD__ );
 
        $this->assertTrue( $status1->isOK(), 'OK' );
        $this->assertTrue( $status2->isOK(), 'OK' );
 
        $this->assertTrue( isset( $status1->value['revision'] ), 'OK' );
        $this->assertFalse( isset( $status2->value['revision'] ), 'OK' );
    }
 
    public function testDoDeleteArticle() {
        $page = $this->createPage(
            __METHOD__,
            "[[original text]] foo",
            CONTENT_MODEL_WIKITEXT
        );
        $id = $page->getId();
 
        $page->doDeleteArticle( "testing deletion" );
 
        $this->assertFalse(
            $page->getTitle()->getArticleID() > 0,
            "Title object should now have page id 0"
        );
        $this->assertFalse( $page->getId() > 0, "WikiPage should now have page id 0" );
        $this->assertFalse(
            $page->exists(),
            "WikiPage::exists should return false after page was deleted"
        );
        $this->assertNull(
            $page->getContent(),
            "WikiPage::getContent should return null after page was deleted"
        );
 
        $t = Title::newFromText( $page->getTitle()->getPrefixedText() );
        $this->assertFalse(
            $t->exists(),
            "Title::exists should return false after page was deleted"
        );
 
        // Run the job queue
        JobQueueGroup::destroySingletons();
        $jobs = new RunJobs;
        $jobs->loadParamsAndArgs( null, [ 'quiet' => true ], null );
        $jobs->execute();
 
        # ------------------------
        $dbr = wfGetDB( DB_REPLICA );
        $res = $dbr->select( 'pagelinks', '*', [ 'pl_from' => $id ] );
        $n = $res->numRows();
        $res->free();
 
        $this->assertEquals( 0, $n, 'pagelinks should contain no more links from the page' );
    }
 
    public function testDoDeleteArticleReal_user0() {
        $page = $this->createPage(
            __METHOD__,
            "[[original text]] foo",
            CONTENT_MODEL_WIKITEXT
        );
        $id = $page->getId();
 
        $errorStack = '';
        $status = $page->doDeleteArticleReal(
            /* reason */ "testing user 0 deletion",
            /* suppress */ false,
            /* unused 1 */ null,
            /* unused 2 */ null,
            /* errorStack */ $errorStack,
            null
        );
        $logId = $status->getValue();
        $actorQuery = ActorMigration::newMigration()->getJoin( 'log_user' );
        $this->assertSelect(
            [ 'logging' ] + $actorQuery['tables'], /* table */
            [
                'log_type',
                'log_action',
                'log_comment',
                'log_user' => $actorQuery['fields']['log_user'],
                'log_user_text' => $actorQuery['fields']['log_user_text'],
                'log_namespace',
                'log_title',
            ],
            [ 'log_id' => $logId ],
            [ [
                'delete',
                'delete',
                'testing user 0 deletion',
                '0',
                '127.0.0.1',
                (string)$page->getTitle()->getNamespace(),
                $page->getTitle()->getDBkey(),
            ] ],
            [],
            $actorQuery['joins']
        );
    }
 
    public function testDoDeleteArticleReal_userSysop() {
        $page = $this->createPage(
            __METHOD__,
            "[[original text]] foo",
            CONTENT_MODEL_WIKITEXT
        );
        $id = $page->getId();
 
        $user = $this->getTestSysop()->getUser();
        $errorStack = '';
        $status = $page->doDeleteArticleReal(
            /* reason */ "testing sysop deletion",
            /* suppress */ false,
            /* unused 1 */ null,
            /* unused 2 */ null,
            /* errorStack */ $errorStack,
            $user
        );
        $logId = $status->getValue();
        $actorQuery = ActorMigration::newMigration()->getJoin( 'log_user' );
        $this->assertSelect(
            [ 'logging' ] + $actorQuery['tables'], /* table */
            [
                'log_type',
                'log_action',
                'log_comment',
                'log_user' => $actorQuery['fields']['log_user'],
                'log_user_text' => $actorQuery['fields']['log_user_text'],
                'log_namespace',
                'log_title',
            ],
            [ 'log_id' => $logId ],
            [ [
                'delete',
                'delete',
                'testing sysop deletion',
                (string)$user->getId(),
                $user->getName(),
                (string)$page->getTitle()->getNamespace(),
                $page->getTitle()->getDBkey(),
            ] ],
            [],
            $actorQuery['joins']
        );
    }
 
    public function testDoDeleteArticleReal_suppress() {
        $page = $this->createPage(
            __METHOD__,
            "[[original text]] foo",
            CONTENT_MODEL_WIKITEXT
        );
        $id = $page->getId();
 
        $user = $this->getTestSysop()->getUser();
        $errorStack = '';
        $status = $page->doDeleteArticleReal(
            /* reason */ "testing deletion",
            /* suppress */ true,
            /* unused 1 */ null,
            /* unused 2 */ null,
            /* errorStack */ $errorStack,
            $user
        );
        $logId = $status->getValue();
        $actorQuery = ActorMigration::newMigration()->getJoin( 'log_user' );
        $this->assertSelect(
            [ 'logging' ] + $actorQuery['tables'], /* table */
            [
                'log_type',
                'log_action',
                'log_comment',
                'log_user' => $actorQuery['fields']['log_user'],
                'log_user_text' => $actorQuery['fields']['log_user_text'],
                'log_namespace',
                'log_title',
            ],
            [ 'log_id' => $logId ],
            [ [
                'suppress',
                'delete',
                'testing deletion',
                (string)$user->getId(),
                $user->getName(),
                (string)$page->getTitle()->getNamespace(),
                $page->getTitle()->getDBkey(),
            ] ],
            [],
            $actorQuery['joins']
        );
 
        $this->assertNull(
            $page->getContent( Revision::FOR_PUBLIC ),
            "WikiPage::getContent should return null after the page was suppressed for general users"
        );
 
        $this->assertNull(
            $page->getContent( Revision::FOR_THIS_USER, null ),
            "WikiPage::getContent should return null after the page was suppressed for user zero"
        );
 
        $this->assertNull(
            $page->getContent( Revision::FOR_THIS_USER, $user ),
            "WikiPage::getContent should return null after the page was suppressed even for a sysop"
        );
    }
 
    public function testDoDeleteUpdates() {
        $user = $this->getTestUser()->getUser();
        $page = $this->createPage(
            __METHOD__,
            "[[original text]] foo",
            CONTENT_MODEL_WIKITEXT
        );
        $id = $page->getId();
        $page->loadPageData(); // make sure the current revision is cached.
 
        // Similar to MovePage logic
        wfGetDB( DB_MASTER )->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
        $page->doDeleteUpdates( $page->getId(), $page->getContent(), $page->getRevision(), $user );
 
        // Run the job queue
        JobQueueGroup::destroySingletons();
        $jobs = new RunJobs;
        $jobs->loadParamsAndArgs( null, [ 'quiet' => true ], null );
        $jobs->execute();
 
        # ------------------------
        $dbr = wfGetDB( DB_REPLICA );
        $res = $dbr->select( 'pagelinks', '*', [ 'pl_from' => $id ] );
        $n = $res->numRows();
        $res->free();
 
        $this->assertEquals( 0, $n, 'pagelinks should contain no more links from the page' );
    }
 
    protected function defineMockContentModelForUpdateTesting( $name ) {
        $handler = $this->getMockBuilder( TextContentHandler::class )
            ->setConstructorArgs( [ $name ] )
            ->setMethods(
                [ 'getSecondaryDataUpdates', 'getDeletionUpdates', 'unserializeContent' ]
            )
            ->getMock();
 
        $dataUpdate = new MWCallableUpdate( 'time' );
        $dataUpdate->_name = "$name data update";
 
        $deletionUpdate = new MWCallableUpdate( 'time' );
        $deletionUpdate->_name = "$name deletion update";
 
        $handler->method( 'getSecondaryDataUpdates' )->willReturn( [ $dataUpdate ] );
        $handler->method( 'getDeletionUpdates' )->willReturn( [ $deletionUpdate ] );
        $handler->method( 'unserializeContent' )->willReturnCallback(
            function ( $text ) use ( $handler ) {
                return $this->createMockContent( $handler, $text );
            }
        );
 
        $this->mergeMwGlobalArrayValue(
            'wgContentHandlers', [
                $name => function () use ( $handler ){
                    return $handler;
                }
            ]
        );
 
        return $handler;
    }
 
    protected function createMockContent( ContentHandler $handler, $text ) {
        $content = $this->getMockBuilder( TextContent::class )
            ->setConstructorArgs( [ $text ] )
            ->setMethods( [ 'getModel', 'getContentHandler' ] )
            ->getMock();
 
        $content->method( 'getModel' )->willReturn( $handler->getModelID() );
        $content->method( 'getContentHandler' )->willReturn( $handler );
 
        return $content;
    }
 
    public function testGetDeletionUpdates() {
        $m1 = $this->defineMockContentModelForUpdateTesting( 'M1' );
 
        $mainContent1 = $this->createMockContent( $m1, 'main 1' );
 
        $page = new WikiPage( Title::newFromText( __METHOD__ ) );
        $page = $this->createPage(
            $page,
            [ 'main' => $mainContent1 ]
        );
 
        $dataUpdates = $page->getDeletionUpdates( $page->getRevisionRecord() );
        $this->assertNotEmpty( $dataUpdates );
 
        $updateNames = array_map( function ( $du ) {
            return isset( $du->_name ) ? $du->_name : get_class( $du );
        }, $dataUpdates );
 
        $this->assertContains( LinksDeletionUpdate::class, $updateNames );
        $this->assertContains( 'M1 deletion update', $updateNames );
    }
 
    public function testGetRevision() {
        $page = $this->newPage( __METHOD__ );
 
        $rev = $page->getRevision();
        $this->assertNull( $rev );
 
        # -----------------
        $this->createPage( $page, "some text", CONTENT_MODEL_WIKITEXT );
 
        $rev = $page->getRevision();
 
        $this->assertEquals( $page->getLatest(), $rev->getId() );
        $this->assertEquals( "some text", $rev->getContent()->getNativeData() );
    }
 
    public function testGetContent() {
        $page = $this->newPage( __METHOD__ );
 
        $content = $page->getContent();
        $this->assertNull( $content );
 
        # -----------------
        $this->createPage( $page, "some text", CONTENT_MODEL_WIKITEXT );
 
        $content = $page->getContent();
        $this->assertEquals( "some text", $content->getNativeData() );
    }
 
    public function testExists() {
        $page = $this->newPage( __METHOD__ );
        $this->assertFalse( $page->exists() );
 
        # -----------------
        $this->createPage( $page, "some text", CONTENT_MODEL_WIKITEXT );
        $this->assertTrue( $page->exists() );
 
        $page = new WikiPage( $page->getTitle() );
        $this->assertTrue( $page->exists() );
 
        # -----------------
        $page->doDeleteArticle( "done testing" );
        $this->assertFalse( $page->exists() );
 
        $page = new WikiPage( $page->getTitle() );
        $this->assertFalse( $page->exists() );
    }
 
    public function provideHasViewableContent() {
        return [
            [ 'WikiPageTest_testHasViewableContent', false, true ],
            [ 'Special:WikiPageTest_testHasViewableContent', false ],
            [ 'MediaWiki:WikiPageTest_testHasViewableContent', false ],
            [ 'Special:Userlogin', true ],
            [ 'MediaWiki:help', true ],
        ];
    }
 
    public function testHasViewableContent( $title, $viewable, $create = false ) {
        $page = $this->newPage( $title );
        $this->assertEquals( $viewable, $page->hasViewableContent() );
 
        if ( $create ) {
            $this->createPage( $page, "some text", CONTENT_MODEL_WIKITEXT );
            $this->assertTrue( $page->hasViewableContent() );
 
            $page = new WikiPage( $page->getTitle() );
            $this->assertTrue( $page->hasViewableContent() );
        }
    }
 
    public function provideGetRedirectTarget() {
        return [
            [ 'WikiPageTest_testGetRedirectTarget_1', CONTENT_MODEL_WIKITEXT, "hello world", null ],
            [
                'WikiPageTest_testGetRedirectTarget_2',
                CONTENT_MODEL_WIKITEXT,
                "#REDIRECT [[hello world]]",
                "Hello world"
            ],
            // The below added to protect against Media namespace
            // redirects which throw a fatal: (T203942)
            [
                'WikiPageTest_testGetRedirectTarget_3',
                CONTENT_MODEL_WIKITEXT,
                "#REDIRECT [[Media:hello_world]]",
                "File:Hello world"
            ],
        ];
    }
 
    public function testGetRedirectTarget( $title, $model, $text, $target ) {
        $this->setMwGlobals( [
            'wgCapitalLinks' => true,
        ] );
 
        $page = $this->createPage( $title, $text, $model );
 
        # sanity check, because this test seems to fail for no reason for some people.
        $c = $page->getContent();
        $this->assertEquals( WikitextContent::class, get_class( $c ) );
 
        # now, test the actual redirect
        $t = $page->getRedirectTarget();
        $this->assertEquals( $target, is_null( $t ) ? null : $t->getPrefixedText() );
    }
 
    public function testIsRedirect( $title, $model, $text, $target ) {
        $page = $this->createPage( $title, $text, $model );
        $this->assertEquals( !is_null( $target ), $page->isRedirect() );
    }
 
    public function provideIsCountable() {
        return [
 
            // any
            [ 'WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                '',
                'any',
                true
            ],
            [ 'WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                'Foo',
                'any',
                true
            ],
 
            // link
            [ 'WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                'Foo',
                'link',
                false
            ],
            [ 'WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                'Foo [[bar]]',
                'link',
                true
            ],
 
            // redirects
            [ 'WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                '#REDIRECT [[bar]]',
                'any',
                false
            ],
            [ 'WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                '#REDIRECT [[bar]]',
                'link',
                false
            ],
 
            // not a content namespace
            [ 'Talk:WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                'Foo',
                'any',
                false
            ],
            [ 'Talk:WikiPageTest_testIsCountable',
                CONTENT_MODEL_WIKITEXT,
                'Foo [[bar]]',
                'link',
                false
            ],
 
            // not a content namespace, different model
            [ 'MediaWiki:WikiPageTest_testIsCountable.js',
                null,
                'Foo',
                'any',
                false
            ],
            [ 'MediaWiki:WikiPageTest_testIsCountable.js',
                null,
                'Foo [[bar]]',
                'link',
                false
            ],
        ];
    }
 
    public function testIsCountable( $title, $model, $text, $mode, $expected ) {
        global $wgContentHandlerUseDB;
 
        $this->setMwGlobals( 'wgArticleCountMethod', $mode );
 
        $title = Title::newFromText( $title );
 
        if ( !$wgContentHandlerUseDB
            && $model
            && ContentHandler::getDefaultModelFor( $title ) != $model
        ) {
            $this->markTestSkipped( "Can not use non-default content model $model for "
                . $title->getPrefixedDBkey() . " with \$wgContentHandlerUseDB disabled." );
        }
 
        $page = $this->createPage( $title, $text, $model );
 
        $editInfo = $page->prepareContentForEdit( $page->getContent() );
 
        $v = $page->isCountable();
        $w = $page->isCountable( $editInfo );
 
        $this->assertEquals(
            $expected,
            $v,
            "isCountable( null ) returned unexpected value " . var_export( $v, true )
                . " instead of " . var_export( $expected, true )
            . " in mode `$mode` for text \"$text\""
        );
 
        $this->assertEquals(
            $expected,
            $w,
            "isCountable( \$editInfo ) returned unexpected value " . var_export( $v, true )
                . " instead of " . var_export( $expected, true )
            . " in mode `$mode` for text \"$text\""
        );
    }
 
    public function provideGetParserOutput() {
        return [
            [
                CONTENT_MODEL_WIKITEXT,
                "hello ''world''\n",
                "<div class=\"mw-parser-output\"><p>hello <i>world</i></p></div>"
            ],
            // @todo more...?
        ];
    }
 
    public function testGetParserOutput( $model, $text, $expectedHtml ) {
        $page = $this->createPage( __METHOD__, $text, $model );
 
        $opt = $page->makeParserOptions( 'canonical' );
        $po = $page->getParserOutput( $opt );
        $text = $po->getText();
 
        $text = trim( preg_replace( '/<!--.*?-->/sm', '', $text ) ); # strip injected comments
        $text = preg_replace( '!\s*(</p>|</div>)!sm', '\1', $text ); # don't let tidy confuse us
 
        $this->assertEquals( $expectedHtml, $text );
 
        return $po;
    }
 
    public function testGetParserOutput_nonexisting() {
        $page = new WikiPage( Title::newFromText( __METHOD__ ) );
 
        $opt = new ParserOptions();
        $po = $page->getParserOutput( $opt );
 
        $this->assertFalse( $po, "getParserOutput() shall return false for non-existing pages." );
    }
 
    public function testGetParserOutput_badrev() {
        $page = $this->createPage( __METHOD__, 'dummy', CONTENT_MODEL_WIKITEXT );
 
        $opt = new ParserOptions();
        $po = $page->getParserOutput( $opt, $page->getLatest() + 1234 );
 
        // @todo would be neat to also test deleted revision
 
        $this->assertFalse( $po, "getParserOutput() shall return false for non-existing revisions." );
    }
 
    public static $sections =
 
        "Intro
 
== stuff ==
hello world
 
== test ==
just a test
 
== foo ==
more stuff
";
 
    public function dataReplaceSection() {
        // NOTE: assume the Help namespace to contain wikitext
        return [
            [ 'Help:WikiPageTest_testReplaceSection',
                CONTENT_MODEL_WIKITEXT,
                self::$sections,
                "0",
                "No more",
                null,
                trim( preg_replace( '/^Intro/sm', 'No more', self::$sections ) )
            ],
            [ 'Help:WikiPageTest_testReplaceSection',
                CONTENT_MODEL_WIKITEXT,
                self::$sections,
                "",
                "No more",
                null,
                "No more"
            ],
            [ 'Help:WikiPageTest_testReplaceSection',
                CONTENT_MODEL_WIKITEXT,
                self::$sections,
                "2",
                "== TEST ==\nmore fun",
                null,
                trim( preg_replace( '/^== test ==.*== foo ==/sm',
                    "== TEST ==\nmore fun\n\n== foo ==",
                    self::$sections ) )
            ],
            [ 'Help:WikiPageTest_testReplaceSection',
                CONTENT_MODEL_WIKITEXT,
                self::$sections,
                "8",
                "No more",
                null,
                trim( self::$sections )
            ],
            [ 'Help:WikiPageTest_testReplaceSection',
                CONTENT_MODEL_WIKITEXT,
                self::$sections,
                "new",
                "No more",
                "New",
                trim( self::$sections ) . "\n\n== New ==\n\nNo more"
            ],
        ];
    }
 
    public function testReplaceSectionContent( $title, $model, $text, $section,
        $with, $sectionTitle, $expected
    ) {
        $page = $this->createPage( $title, $text, $model );
 
        $content = ContentHandler::makeContent( $with, $page->getTitle(), $page->getContentModel() );
        $c = $page->replaceSectionContent( $section, $content, $sectionTitle );
 
        $this->assertEquals( $expected, is_null( $c ) ? null : trim( $c->getNativeData() ) );
    }
 
    public function testReplaceSectionAtRev( $title, $model, $text, $section,
        $with, $sectionTitle, $expected
    ) {
        $page = $this->createPage( $title, $text, $model );
        $baseRevId = $page->getLatest();
 
        $content = ContentHandler::makeContent( $with, $page->getTitle(), $page->getContentModel() );
        $c = $page->replaceSectionAtRev( $section, $content, $sectionTitle, $baseRevId );
 
        $this->assertEquals( $expected, is_null( $c ) ? null : trim( $c->getNativeData() ) );
    }
 
    public function testGetOldestRevision() {
        $page = $this->newPage( __METHOD__ );
        $page->doEditContent(
            new WikitextContent( 'one' ),
            "first edit",
            EDIT_NEW
        );
        $rev1 = $page->getRevision();
 
        $page = new WikiPage( $page->getTitle() );
        $page->doEditContent(
            new WikitextContent( 'two' ),
            "second edit",
            EDIT_UPDATE
        );
 
        $page = new WikiPage( $page->getTitle() );
        $page->doEditContent(
            new WikitextContent( 'three' ),
            "third edit",
            EDIT_UPDATE
        );
 
        // sanity check
        $this->assertNotEquals(
            $rev1->getId(),
            $page->getRevision()->getId(),
            '$page->getRevision()->getId()'
        );
 
        // actual test
        $this->assertEquals(
            $rev1->getId(),
            $page->getOldestRevision()->getId(),
            '$page->getOldestRevision()->getId()'
        );
    }
 
    public function testDoRollback() {
        // FIXME: fails under postgres
        $this->markTestSkippedIfDbType( 'postgres' );
 
        $admin = $this->getTestSysop()->getUser();
        $user1 = $this->getTestUser()->getUser();
        // Use the confirmed group for user2 to make sure the user is different
        $user2 = $this->getTestUser( [ 'confirmed' ] )->getUser();
 
        // make sure we can test autopatrolling
        $this->setMwGlobals( 'wgUseRCPatrol', true );
 
        // TODO: MCR: test rollback of multiple slots!
        $page = $this->newPage( __METHOD__ );
 
        // Make some edits
        $text = "one";
        $status1 = $page->doEditContent( ContentHandler::makeContent( $text, $page->getTitle() ),
            "section one", EDIT_NEW, false, $admin );
 
        $text .= "\n\ntwo";
        $status2 = $page->doEditContent( ContentHandler::makeContent( $text, $page->getTitle() ),
            "adding section two", 0, false, $user1 );
 
        $text .= "\n\nthree";
        $status3 = $page->doEditContent( ContentHandler::makeContent( $text, $page->getTitle() ),
            "adding section three", 0, false, $user2 );
 
        $rev1 = $status1->getValue()['revision'];
        $rev2 = $status2->getValue()['revision'];
        $rev3 = $status3->getValue()['revision'];
 
        $this->assertEquals( 3, Revision::countByPageId( wfGetDB( DB_REPLICA ), $page->getId() ) );
        $this->assertEquals( $admin->getName(), $rev1->getUserText() );
        $this->assertEquals( $user1->getName(), $rev2->getUserText() );
        $this->assertEquals( $user2->getName(), $rev3->getUserText() );
 
        // Now, try the actual rollback
        $token = $admin->getEditToken( 'rollback' );
        $rollbackErrors = $page->doRollback(
            $user2->getName(),
            "testing rollback",
            $token,
            false,
            $resultDetails,
            $admin
        );
 
        if ( $rollbackErrors ) {
            $this->fail(
                "Rollback failed:\n" .
                print_r( $rollbackErrors, true ) . ";\n" .
                print_r( $resultDetails, true )
            );
        }
 
        $page = new WikiPage( $page->getTitle() );
        $this->assertEquals( $rev2->getSha1(), $page->getRevision()->getSha1(),
            "rollback did not revert to the correct revision" );
        $this->assertEquals( "one\n\ntwo", $page->getContent()->getNativeData() );
 
        $rc = MediaWikiServices::getInstance()->getRevisionStore()->getRecentChange(
            $page->getRevision()->getRevisionRecord()
        );
 
        $this->assertNotNull( $rc, 'RecentChanges entry' );
        $this->assertEquals(
            RecentChange::PRC_AUTOPATROLLED,
            $rc->getAttribute( 'rc_patrolled' ),
            'rc_patrolled'
        );
 
        // TODO: MCR: assert origin once we write slot data
        // $mainSlot = $page->getRevision()->getRevisionRecord()->getSlot( SlotRecord::MAIN );
        // $this->assertTrue( $mainSlot->isInherited(), 'isInherited' );
        // $this->assertSame( $rev2->getId(), $mainSlot->getOrigin(), 'getOrigin' );
    }
 
    public function testDoRollbackFailureSameContent() {
        $admin = $this->getTestSysop()->getUser();
 
        $text = "one";
        $page = $this->newPage( __METHOD__ );
        $page->doEditContent(
            ContentHandler::makeContent( $text, $page->getTitle(), CONTENT_MODEL_WIKITEXT ),
            "section one",
            EDIT_NEW,
            false,
            $admin
        );
        $rev1 = $page->getRevision();
 
        $user1 = $this->getTestUser( [ 'sysop' ] )->getUser();
        $text .= "\n\ntwo";
        $page = new WikiPage( $page->getTitle() );
        $page->doEditContent(
            ContentHandler::makeContent( $text, $page->getTitle(), CONTENT_MODEL_WIKITEXT ),
            "adding section two",
            0,
            false,
            $user1
        );
 
        # now, do a the rollback from the same user was doing the edit before
        $resultDetails = [];
        $token = $user1->getEditToken( 'rollback' );
        $errors = $page->doRollback(
            $user1->getName(),
            "testing revert same user",
            $token,
            false,
            $resultDetails,
            $admin
        );
 
        $this->assertEquals( [], $errors, "Rollback failed same user" );
 
        # now, try the rollback
        $resultDetails = [];
        $token = $admin->getEditToken( 'rollback' );
        $errors = $page->doRollback(
            $user1->getName(),
            "testing revert",
            $token,
            false,
            $resultDetails,
            $admin
        );
 
        $this->assertEquals(
            [
                [
                    'alreadyrolled',
                    __METHOD__,
                    $user1->getName(),
                    $admin->getName(),
                ],
            ],
            $errors,
            "Rollback not failed"
        );
 
        $page = new WikiPage( $page->getTitle() );
        $this->assertEquals( $rev1->getSha1(), $page->getRevision()->getSha1(),
            "rollback did not revert to the correct revision" );
        $this->assertEquals( "one", $page->getContent()->getNativeData() );
    }
 
    public function testDoRollbackTagging() {
        if ( !in_array( 'mw-rollback', ChangeTags::getSoftwareTags() ) ) {
            $this->markTestSkipped( 'Rollback tag deactivated, skipped the test.' );
        }
 
        $admin = new User();
        $admin->setName( 'Administrator' );
        $admin->addToDatabase();
 
        $text = 'First line';
        $page = $this->newPage( 'WikiPageTest_testDoRollbackTagging' );
        $page->doEditContent(
            ContentHandler::makeContent( $text, $page->getTitle(), CONTENT_MODEL_WIKITEXT ),
            'Added first line',
            EDIT_NEW,
            false,
            $admin
        );
 
        $secondUser = new User();
        $secondUser->setName( '92.65.217.32' );
        $text .= '\n\nSecond line';
        $page = new WikiPage( $page->getTitle() );
        $page->doEditContent(
            ContentHandler::makeContent( $text, $page->getTitle(), CONTENT_MODEL_WIKITEXT ),
            'Adding second line',
            0,
            false,
            $secondUser
        );
 
        // Now, try the rollback
        $admin->addGroup( 'sysop' ); // Make the test user a sysop
        $token = $admin->getEditToken( 'rollback' );
        $errors = $page->doRollback(
            $secondUser->getName(),
            'testing rollback',
            $token,
            false,
            $resultDetails,
            $admin
        );
 
        // If doRollback completed without errors
        if ( $errors === [] ) {
            $tags = $resultDetails[ 'tags' ];
            $this->assertContains( 'mw-rollback', $tags );
        }
    }
 
    public function provideGetAutoDeleteReason() {
        return [
            [
                [],
                false,
                false
            ],
 
            [
                [
                    [ "first edit", null ],
                ],
                "/first edit.*only contributor/",
                false
            ],
 
            [
                [
                    [ "first edit", null ],
                    [ "second edit", null ],
                ],
                "/second edit.*only contributor/",
                true
            ],
 
            [
                [
                    [ "first edit", "127.0.2.22" ],
                    [ "second edit", "127.0.3.33" ],
                ],
                "/second edit/",
                true
            ],
 
            [
                [
                    [
                        "first edit: "
                            . "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam "
                            . " nonumy eirmod tempor invidunt ut labore et dolore magna "
                            . "aliquyam erat, sed diam voluptua. At vero eos et accusam "
                            . "et justo duo dolores et ea rebum. Stet clita kasd gubergren, "
                            . "no sea  takimata sanctus est Lorem ipsum dolor sit amet.'",
                        null
                    ],
                ],
                '/first edit:.*\.\.\."/',
                false
            ],
 
            [
                [
                    [ "first edit", "127.0.2.22" ],
                    [ "", "127.0.3.33" ],
                ],
                "/before blanking.*first edit/",
                true
            ],
 
        ];
    }
 
    public function testGetAutoDeleteReason( $edits, $expectedResult, $expectedHistory ) {
        global $wgUser;
 
        // NOTE: assume Help namespace to contain wikitext
        $page = $this->newPage( "Help:WikiPageTest_testGetAutoDeleteReason" );
 
        $c = 1;
 
        foreach ( $edits as $edit ) {
            $user = new User();
 
            if ( !empty( $edit[1] ) ) {
                $user->setName( $edit[1] );
            } else {
                $user = $wgUser;
            }
 
            $content = ContentHandler::makeContent( $edit[0], $page->getTitle(), $page->getContentModel() );
 
            $page->doEditContent( $content, "test edit $c", $c < 2 ? EDIT_NEW : 0, false, $user );
 
            $c += 1;
        }
 
        $reason = $page->getAutoDeleteReason( $hasHistory );
 
        if ( is_bool( $expectedResult ) || is_null( $expectedResult ) ) {
            $this->assertEquals( $expectedResult, $reason );
        } else {
            $this->assertTrue( (bool)preg_match( $expectedResult, $reason ),
                "Autosummary didn't match expected pattern $expectedResult: $reason" );
        }
 
        $this->assertEquals( $expectedHistory, $hasHistory,
            "expected \$hasHistory to be " . var_export( $expectedHistory, true ) );
 
        $page->doDeleteArticle( "done" );
    }
 
    public function providePreSaveTransform() {
        return [
            [ 'hello this is ~~~',
                "hello this is [[Special:Contributions/127.0.0.1|127.0.0.1]]",
            ],
            [ 'hello \'\'this\'\' is <nowiki>~~~</nowiki>',
                'hello \'\'this\'\' is <nowiki>~~~</nowiki>',
            ],
        ];
    }
 
    public function testWikiPageFactory() {
        $title = Title::makeTitle( NS_FILE, 'Someimage.png' );
        $page = WikiPage::factory( $title );
        $this->assertEquals( WikiFilePage::class, get_class( $page ) );
 
        $title = Title::makeTitle( NS_CATEGORY, 'SomeCategory' );
        $page = WikiPage::factory( $title );
        $this->assertEquals( WikiCategoryPage::class, get_class( $page ) );
 
        $title = Title::makeTitle( NS_MAIN, 'SomePage' );
        $page = WikiPage::factory( $title );
        $this->assertEquals( WikiPage::class, get_class( $page ) );
    }
 
    public function testLoadPageData() {
        $title = Title::makeTitle( NS_MAIN, 'SomePage' );
        $page = WikiPage::factory( $title );
 
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_NORMAL ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_LATEST ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_LOCKING ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_EXCLUSIVE ) );
 
        $page->loadPageData( IDBAccessObject::READ_NORMAL );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_NORMAL ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_LATEST ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_LOCKING ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_EXCLUSIVE ) );
 
        $page->loadPageData( IDBAccessObject::READ_LATEST );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_NORMAL ) );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_LATEST ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_LOCKING ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_EXCLUSIVE ) );
 
        $page->loadPageData( IDBAccessObject::READ_LOCKING );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_NORMAL ) );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_LATEST ) );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_LOCKING ) );
        $this->assertFalse( $page->wasLoadedFrom( IDBAccessObject::READ_EXCLUSIVE ) );
 
        $page->loadPageData( IDBAccessObject::READ_EXCLUSIVE );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_NORMAL ) );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_LATEST ) );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_LOCKING ) );
        $this->assertTrue( $page->wasLoadedFrom( IDBAccessObject::READ_EXCLUSIVE ) );
    }
 
    public function testCommentMigrationOnDeletion( $writeStage, $readStage ) {
        $this->setMwGlobals( 'wgCommentTableSchemaMigrationStage', $writeStage );
        $this->overrideMwServices();
 
        $dbr = wfGetDB( DB_REPLICA );
 
        $page = $this->createPage(
            __METHOD__,
            "foo",
            CONTENT_MODEL_WIKITEXT
        );
        $revid = $page->getLatest();
        if ( $writeStage > MIGRATION_OLD ) {
            $comment_id = $dbr->selectField(
                'revision_comment_temp',
                'revcomment_comment_id',
                [ 'revcomment_rev' => $revid ],
                __METHOD__
            );
        }
 
        $this->setMwGlobals( 'wgCommentTableSchemaMigrationStage', $readStage );
        $this->overrideMwServices();
 
        $page->doDeleteArticle( "testing deletion" );
 
        if ( $readStage > MIGRATION_OLD ) {
            // Didn't leave behind any 'revision_comment_temp' rows
            $n = $dbr->selectField(
                'revision_comment_temp', 'COUNT(*)', [ 'revcomment_rev' => $revid ], __METHOD__
            );
            $this->assertEquals( 0, $n, 'no entry in revision_comment_temp after deletion' );
 
            // Copied or upgraded the comment_id, as applicable
            $ar_comment_id = $dbr->selectField(
                'archive',
                'ar_comment_id',
                [ 'ar_rev_id' => $revid ],
                __METHOD__
            );
            if ( $writeStage > MIGRATION_OLD ) {
                $this->assertSame( $comment_id, $ar_comment_id );
            } else {
                $this->assertNotEquals( 0, $ar_comment_id );
            }
        }
 
        // Copied rev_comment, if applicable
        if ( $readStage <= MIGRATION_WRITE_BOTH && $writeStage <= MIGRATION_WRITE_BOTH ) {
            $ar_comment = $dbr->selectField(
                'archive',
                'ar_comment',
                [ 'ar_rev_id' => $revid ],
                __METHOD__
            );
            $this->assertSame( 'testing', $ar_comment );
        }
    }
 
    public function provideCommentMigrationOnDeletion() {
        return [
            [ MIGRATION_OLD, MIGRATION_OLD ],
            [ MIGRATION_OLD, MIGRATION_WRITE_BOTH ],
            [ MIGRATION_OLD, MIGRATION_WRITE_NEW ],
            [ MIGRATION_WRITE_BOTH, MIGRATION_OLD ],
            [ MIGRATION_WRITE_BOTH, MIGRATION_WRITE_BOTH ],
            [ MIGRATION_WRITE_BOTH, MIGRATION_WRITE_NEW ],
            [ MIGRATION_WRITE_BOTH, MIGRATION_NEW ],
            [ MIGRATION_WRITE_NEW, MIGRATION_WRITE_BOTH ],
            [ MIGRATION_WRITE_NEW, MIGRATION_WRITE_NEW ],
            [ MIGRATION_WRITE_NEW, MIGRATION_NEW ],
            [ MIGRATION_NEW, MIGRATION_WRITE_BOTH ],
            [ MIGRATION_NEW, MIGRATION_WRITE_NEW ],
            [ MIGRATION_NEW, MIGRATION_NEW ],
        ];
    }
 
    public function testUpdateCategoryCounts() {
        $page = new WikiPage( Title::newFromText( __METHOD__ ) );
 
        // Add an initial category
        $page->updateCategoryCounts( [ 'A' ], [], 0 );
 
        $this->assertEquals( 1, Category::newFromName( 'A' )->getPageCount() );
        $this->assertEquals( 0, Category::newFromName( 'B' )->getPageCount() );
        $this->assertEquals( 0, Category::newFromName( 'C' )->getPageCount() );
 
        // Add a new category
        $page->updateCategoryCounts( [ 'B' ], [], 0 );
 
        $this->assertEquals( 1, Category::newFromName( 'A' )->getPageCount() );
        $this->assertEquals( 1, Category::newFromName( 'B' )->getPageCount() );
        $this->assertEquals( 0, Category::newFromName( 'C' )->getPageCount() );
 
        // Add and remove a category
        $page->updateCategoryCounts( [ 'C' ], [ 'A' ], 0 );
 
        $this->assertEquals( 0, Category::newFromName( 'A' )->getPageCount() );
        $this->assertEquals( 1, Category::newFromName( 'B' )->getPageCount() );
        $this->assertEquals( 1, Category::newFromName( 'C' )->getPageCount() );
    }
 
    public function provideUpdateRedirectOn() {
        yield [ '#REDIRECT [[Foo]]', true, null, true, true, 0 ];
        yield [ '#REDIRECT [[Foo]]', true, 'Foo', true, false, 1 ];
        yield [ 'SomeText', false, null, false, true, 0 ];
        yield [ 'SomeText', false, 'Foo', false, false, 1 ];
    }
 
    public function testUpdateRedirectOn(
        $initialText,
        $initialRedirectState,
        $redirectTitle,
        $lastRevIsRedirect,
        $expectedSuccess,
        $expectedRowCount
    ) {
        // FIXME: fails under sqlite and postgres
        $this->markTestSkippedIfDbType( 'sqlite' );
        $this->markTestSkippedIfDbType( 'postgres' );
        static $pageCounter = 0;
        $pageCounter++;
 
        $page = $this->createPage( Title::newFromText( __METHOD__ . $pageCounter ), $initialText );
        $this->assertSame( $initialRedirectState, $page->isRedirect() );
 
        $redirectTitle = is_string( $redirectTitle )
            ? Title::newFromText( $redirectTitle )
            : $redirectTitle;
 
        $success = $page->updateRedirectOn( $this->db, $redirectTitle, $lastRevIsRedirect );
        $this->assertSame( $expectedSuccess, $success, 'Success assertion' );
        $this->assertRedirectTableCountForPageId( $page->getId(), $expectedRowCount );
    }
 
    private function assertRedirectTableCountForPageId( $pageId, $expected ) {
        $this->assertSelect(
            'redirect',
            'COUNT(*)',
            [ 'rd_from' => $pageId ],
            [ [ strval( $expected ) ] ]
        );
    }
 
    public function testInsertRedirectEntry_insertsRedirectEntry() {
        $page = $this->createPage( Title::newFromText( __METHOD__ ), 'A' );
        $this->assertRedirectTableCountForPageId( $page->getId(), 0 );
 
        $targetTitle = Title::newFromText( 'SomeTarget#Frag' );
        $targetTitle->mInterwiki = 'eninter';
        $page->insertRedirectEntry( $targetTitle, null );
 
        $this->assertSelect(
            'redirect',
            [ 'rd_from', 'rd_namespace', 'rd_title', 'rd_fragment', 'rd_interwiki' ],
            [ 'rd_from' => $page->getId() ],
            [ [
                strval( $page->getId() ),
                strval( $targetTitle->getNamespace() ),
                strval( $targetTitle->getDBkey() ),
                strval( $targetTitle->getFragment() ),
                strval( $targetTitle->getInterwiki() ),
            ] ]
        );
    }
 
    public function testInsertRedirectEntry_insertsRedirectEntryWithPageLatest() {
        $page = $this->createPage( Title::newFromText( __METHOD__ ), 'A' );
        $this->assertRedirectTableCountForPageId( $page->getId(), 0 );
 
        $targetTitle = Title::newFromText( 'SomeTarget#Frag' );
        $targetTitle->mInterwiki = 'eninter';
        $page->insertRedirectEntry( $targetTitle, $page->getLatest() );
 
        $this->assertSelect(
            'redirect',
            [ 'rd_from', 'rd_namespace', 'rd_title', 'rd_fragment', 'rd_interwiki' ],
            [ 'rd_from' => $page->getId() ],
            [ [
                strval( $page->getId() ),
                strval( $targetTitle->getNamespace() ),
                strval( $targetTitle->getDBkey() ),
                strval( $targetTitle->getFragment() ),
                strval( $targetTitle->getInterwiki() ),
            ] ]
        );
    }
 
    public function testInsertRedirectEntry_doesNotInsertIfPageLatestIncorrect() {
        $page = $this->createPage( Title::newFromText( __METHOD__ ), 'A' );
        $this->assertRedirectTableCountForPageId( $page->getId(), 0 );
 
        $targetTitle = Title::newFromText( 'SomeTarget#Frag' );
        $targetTitle->mInterwiki = 'eninter';
        $page->insertRedirectEntry( $targetTitle, 215251 );
 
        $this->assertRedirectTableCountForPageId( $page->getId(), 0 );
    }
 
    private function getRow( array $overrides = [] ) {
        $row = [
            'page_id' => '44',
            'page_len' => '76',
            'page_is_redirect' => '1',
            'page_latest' => '99',
            'page_namespace' => '3',
            'page_title' => 'JaJaTitle',
            'page_restrictions' => 'edit=autoconfirmed,sysop:move=sysop',
            'page_touched' => '20120101020202',
            'page_links_updated' => '20140101020202',
        ];
        foreach ( $overrides as $key => $value ) {
            $row[$key] = $value;
        }
        return (object)$row;
    }
 
    public function provideNewFromRowSuccess() {
        yield 'basic row' => [
            $this->getRow(),
            function ( WikiPage $wikiPage, self $test ) {
                $test->assertSame( 44, $wikiPage->getId() );
                $test->assertSame( 76, $wikiPage->getTitle()->getLength() );
                $test->assertTrue( $wikiPage->isRedirect() );
                $test->assertSame( 99, $wikiPage->getLatest() );
                $test->assertSame( 3, $wikiPage->getTitle()->getNamespace() );
                $test->assertSame( 'JaJaTitle', $wikiPage->getTitle()->getDBkey() );
                $test->assertSame(
                    [
                        'edit' => [ 'autoconfirmed', 'sysop' ],
                        'move' => [ 'sysop' ],
                    ],
                    $wikiPage->getTitle()->getAllRestrictions()
                );
                $test->assertSame( '20120101020202', $wikiPage->getTouched() );
                $test->assertSame( '20140101020202', $wikiPage->getLinksTimestamp() );
            }
        ];
        yield 'different timestamp formats' => [
            $this->getRow( [
                'page_touched' => '2012-01-01 02:02:02',
                'page_links_updated' => '2014-01-01 02:02:02',
            ] ),
            function ( WikiPage $wikiPage, self $test ) {
                $test->assertSame( '20120101020202', $wikiPage->getTouched() );
                $test->assertSame( '20140101020202', $wikiPage->getLinksTimestamp() );
            }
        ];
        yield 'no restrictions' => [
            $this->getRow( [
                'page_restrictions' => '',
            ] ),
            function ( WikiPage $wikiPage, self $test ) {
            $test->assertSame(
                [
                    'edit' => [],
                    'move' => [],
                ],
                $wikiPage->getTitle()->getAllRestrictions()
            );
            }
        ];
        yield 'not redirect' => [
            $this->getRow( [
                'page_is_redirect' => '0',
            ] ),
            function ( WikiPage $wikiPage, self $test ) {
                $test->assertFalse( $wikiPage->isRedirect() );
            }
        ];
    }
 
    public function testNewFromRow( $row, $assertions ) {
        $page = WikiPage::newFromRow( $row, 'fromdb' );
        $assertions( $page, $this );
    }
 
    public function provideTestNewFromId_returnsNullOnBadPageId() {
        yield[ 0 ];
        yield[ -11 ];
    }
 
    public function testNewFromId_returnsNullOnBadPageId( $pageId ) {
        $this->assertNull( WikiPage::newFromID( $pageId ) );
    }
 
    public function testNewFromId_appearsToFetchCorrectRow() {
        $createdPage = $this->createPage( __METHOD__, 'Xsfaij09' );
        $fetchedPage = WikiPage::newFromID( $createdPage->getId() );
        $this->assertSame( $createdPage->getId(), $fetchedPage->getId() );
        $this->assertEquals(
            $createdPage->getContent()->getNativeData(),
            $fetchedPage->getContent()->getNativeData()
        );
    }
 
    public function testNewFromId_returnsNullOnNonExistingId() {
        $this->assertNull( WikiPage::newFromID( 2147483647 ) );
    }
 
    public function provideTestInsertProtectNullRevision() {
        // phpcs:disable Generic.Files.LineLength
        yield [
            'goat-message-key',
            [ 'edit' => 'sysop' ],
            [ 'edit' => '20200101040404' ],
            false,
            'Goat Reason',
            true,
            '(goat-message-key: WikiPageDbTestBase::testInsertProtectNullRevision, UTSysop)(colon-separator)Goat Reason(word-separator)(parentheses: (protect-summary-desc: (restriction-edit), (protect-level-sysop), (protect-expiring: 04:04, 1 (january) 2020, 1 (january) 2020, 04:04)))'
        ];
        yield [
            'goat-key',
            [ 'edit' => 'sysop', 'move' => 'something' ],
            [ 'edit' => '20200101040404', 'move' => '20210101050505' ],
            false,
            'Goat Goat',
            true,
            '(goat-key: WikiPageDbTestBase::testInsertProtectNullRevision, UTSysop)(colon-separator)Goat Goat(word-separator)(parentheses: (protect-summary-desc: (restriction-edit), (protect-level-sysop), (protect-expiring: 04:04, 1 (january) 2020, 1 (january) 2020, 04:04))(word-separator)(protect-summary-desc: (restriction-move), (protect-level-something), (protect-expiring: 05:05, 1 (january) 2021, 1 (january) 2021, 05:05)))'
        ];
        // phpcs:enable
    }
 
    public function testInsertProtectNullRevision(
        $revCommentMsg,
        array $limit,
        array $expiry,
        $cascade,
        $reason,
        $user,
        $expectedComment
    ) {
        $this->setContentLang( 'qqx' );
 
        $page = $this->createPage( __METHOD__, 'Goat' );
 
        $user = $user === null ? $user : $this->getTestSysop()->getUser();
 
        $result = $page->insertProtectNullRevision(
            $revCommentMsg,
            $limit,
            $expiry,
            $cascade,
            $reason,
            $user
        );
 
        $this->assertTrue( $result instanceof Revision );
        $this->assertSame( $expectedComment, $result->getComment( Revision::RAW ) );
    }
 
    public function testUpdateRevisionOn_existingPage() {
        $user = $this->getTestSysop()->getUser();
        $page = $this->createPage( __METHOD__, 'StartText' );
 
        $revision = new Revision(
            [
                'id' => 9989,
                'page' => $page->getId(),
                'title' => $page->getTitle(),
                'comment' => __METHOD__,
                'minor_edit' => true,
                'text' => __METHOD__ . '-text',
                'len' => strlen( __METHOD__ . '-text' ),
                'user' => $user->getId(),
                'user_text' => $user->getName(),
                'timestamp' => '20170707040404',
                'content_model' => CONTENT_MODEL_WIKITEXT,
                'content_format' => CONTENT_FORMAT_WIKITEXT,
            ]
        );
 
        $result = $page->updateRevisionOn( $this->db, $revision );
        $this->assertTrue( $result );
        $this->assertSame( 9989, $page->getLatest() );
        $this->assertEquals( $revision, $page->getRevision() );
    }
 
    public function testUpdateRevisionOn_NonExistingPage() {
        $user = $this->getTestSysop()->getUser();
        $page = $this->createPage( __METHOD__, 'StartText' );
        $page->doDeleteArticle( 'reason' );
 
        $revision = new Revision(
            [
                'id' => 9989,
                'page' => $page->getId(),
                'title' => $page->getTitle(),
                'comment' => __METHOD__,
                'minor_edit' => true,
                'text' => __METHOD__ . '-text',
                'len' => strlen( __METHOD__ . '-text' ),
                'user' => $user->getId(),
                'user_text' => $user->getName(),
                'timestamp' => '20170707040404',
                'content_model' => CONTENT_MODEL_WIKITEXT,
                'content_format' => CONTENT_FORMAT_WIKITEXT,
            ]
        );
 
        $result = $page->updateRevisionOn( $this->db, $revision );
        $this->assertFalse( $result );
    }
 
    public function testUpdateIfNewerOn_olderRevision() {
        $user = $this->getTestSysop()->getUser();
        $page = $this->createPage( __METHOD__, 'StartText' );
        $initialRevision = $page->getRevision();
 
        $olderTimeStamp = wfTimestamp(
            TS_MW,
            wfTimestamp( TS_UNIX, $initialRevision->getTimestamp() ) - 1
        );
 
        $olderRevison = new Revision(
            [
                'id' => 9989,
                'page' => $page->getId(),
                'title' => $page->getTitle(),
                'comment' => __METHOD__,
                'minor_edit' => true,
                'text' => __METHOD__ . '-text',
                'len' => strlen( __METHOD__ . '-text' ),
                'user' => $user->getId(),
                'user_text' => $user->getName(),
                'timestamp' => $olderTimeStamp,
                'content_model' => CONTENT_MODEL_WIKITEXT,
                'content_format' => CONTENT_FORMAT_WIKITEXT,
            ]
        );
 
        $result = $page->updateIfNewerOn( $this->db, $olderRevison );
        $this->assertFalse( $result );
    }
 
    public function testUpdateIfNewerOn_newerRevision() {
        $user = $this->getTestSysop()->getUser();
        $page = $this->createPage( __METHOD__, 'StartText' );
        $initialRevision = $page->getRevision();
 
        $newerTimeStamp = wfTimestamp(
            TS_MW,
            wfTimestamp( TS_UNIX, $initialRevision->getTimestamp() ) + 1
        );
 
        $newerRevision = new Revision(
            [
                'id' => 9989,
                'page' => $page->getId(),
                'title' => $page->getTitle(),
                'comment' => __METHOD__,
                'minor_edit' => true,
                'text' => __METHOD__ . '-text',
                'len' => strlen( __METHOD__ . '-text' ),
                'user' => $user->getId(),
                'user_text' => $user->getName(),
                'timestamp' => $newerTimeStamp,
                'content_model' => CONTENT_MODEL_WIKITEXT,
                'content_format' => CONTENT_FORMAT_WIKITEXT,
            ]
        );
        $result = $page->updateIfNewerOn( $this->db, $newerRevision );
        $this->assertTrue( $result );
    }
 
    public function testInsertOn() {
        $title = Title::newFromText( __METHOD__ );
        $page = new WikiPage( $title );
 
        $startTimeStamp = wfTimestampNow();
        $result = $page->insertOn( $this->db );
        $endTimeStamp = wfTimestampNow();
 
        $this->assertInternalType( 'int', $result );
        $this->assertTrue( $result > 0 );
 
        $condition = [ 'page_id' => $result ];
 
        // Check the default fields have been filled
        $this->assertSelect(
            'page',
            [
                'page_namespace',
                'page_title',
                'page_restrictions',
                'page_is_redirect',
                'page_is_new',
                'page_latest',
                'page_len',
            ],
            $condition,
            [ [
                '0',
                __METHOD__,
                '',
                '0',
                '1',
                '0',
                '0',
            ] ]
        );
 
        // Check the page_random field has been filled
        $pageRandom = $this->db->selectField( 'page', 'page_random', $condition );
        $this->assertTrue( (float)$pageRandom < 1 && (float)$pageRandom > 0 );
 
        // Assert the touched timestamp in the DB is roughly when we inserted the page
        $pageTouched = $this->db->selectField( 'page', 'page_touched', $condition );
        $this->assertTrue(
            wfTimestamp( TS_UNIX, $startTimeStamp )
            <= wfTimestamp( TS_UNIX, $pageTouched )
        );
        $this->assertTrue(
            wfTimestamp( TS_UNIX, $endTimeStamp )
            >= wfTimestamp( TS_UNIX, $pageTouched )
        );
 
        // Try inserting the same page again and checking the result is false (no change)
        $result = $page->insertOn( $this->db );
        $this->assertFalse( $result );
    }
 
    public function testInsertOn_idSpecified() {
        $title = Title::newFromText( __METHOD__ );
        $page = new WikiPage( $title );
        $id = 1478952189;
 
        $result = $page->insertOn( $this->db, $id );
 
        $this->assertSame( $id, $result );
 
        $condition = [ 'page_id' => $result ];
 
        // Check there is actually a row in the db
        $this->assertSelect(
            'page',
            [ 'page_title' ],
            $condition,
            [ [ __METHOD__ ] ]
        );
    }
 
    public function provideTestDoUpdateRestrictions_setBasicRestrictions() {
        // Note: Once the current dates passes the date in these tests they will fail.
        yield 'move something' => [
            true,
            [ 'move' => 'something' ],
            [],
            [ 'edit' => [], 'move' => [ 'something' ] ],
            [],
        ];
        yield 'move something, edit blank' => [
            true,
            [ 'move' => 'something', 'edit' => '' ],
            [],
            [ 'edit' => [], 'move' => [ 'something' ] ],
            [],
        ];
        yield 'edit sysop, with expiry' => [
            true,
            [ 'edit' => 'sysop' ],
            [ 'edit' => '21330101020202' ],
            [ 'edit' => [ 'sysop' ], 'move' => [] ],
            [ 'edit' => '21330101020202' ],
        ];
        yield 'move and edit, move with expiry' => [
            true,
            [ 'move' => 'something', 'edit' => 'another' ],
            [ 'move' => '22220202010101' ],
            [ 'edit' => [ 'another' ], 'move' => [ 'something' ] ],
            [ 'move' => '22220202010101' ],
        ];
        yield 'move and edit, edit with infinity expiry' => [
            true,
            [ 'move' => 'something', 'edit' => 'another' ],
            [ 'edit' => 'infinity' ],
            [ 'edit' => [ 'another' ], 'move' => [ 'something' ] ],
            [ 'edit' => 'infinity' ],
        ];
        yield 'non existing, create something' => [
            false,
            [ 'create' => 'something' ],
            [],
            [ 'create' => [ 'something' ] ],
            [],
        ];
        yield 'non existing, create something with expiry' => [
            false,
            [ 'create' => 'something' ],
            [ 'create' => '23451212112233' ],
            [ 'create' => [ 'something' ] ],
            [ 'create' => '23451212112233' ],
        ];
    }
 
    public function testDoUpdateRestrictions_setBasicRestrictions(
        $pageExists,
        array $limit,
        array $expiry,
        array $expectedRestrictions,
        array $expectedRestrictionExpiries
    ) {
        if ( $pageExists ) {
            $page = $this->createPage( __METHOD__, 'ABC' );
        } else {
            $page = new WikiPage( Title::newFromText( __METHOD__ . '-nonexist' ) );
        }
        $user = $this->getTestSysop()->getUser();
        $cascade = false;
 
        $status = $page->doUpdateRestrictions( $limit, $expiry, $cascade, 'aReason', $user, [] );
 
        $logId = $status->getValue();
        $allRestrictions = $page->getTitle()->getAllRestrictions();
 
        $this->assertTrue( $status->isGood() );
        $this->assertInternalType( 'int', $logId );
        $this->assertSame( $expectedRestrictions, $allRestrictions );
        foreach ( $expectedRestrictionExpiries as $key => $value ) {
            $this->assertSame( $value, $page->getTitle()->getRestrictionExpiry( $key ) );
        }
 
        // Make sure the log entry looks good
        // log_params is not checked here
        $actorQuery = ActorMigration::newMigration()->getJoin( 'log_user' );
        $this->assertSelect(
            [ 'logging' ] + $actorQuery['tables'],
            [
                'log_comment',
                'log_user' => $actorQuery['fields']['log_user'],
                'log_user_text' => $actorQuery['fields']['log_user_text'],
                'log_namespace',
                'log_title',
            ],
            [ 'log_id' => $logId ],
            [ [
                'aReason',
                (string)$user->getId(),
                $user->getName(),
                (string)$page->getTitle()->getNamespace(),
                $page->getTitle()->getDBkey(),
            ] ],
            [],
            $actorQuery['joins']
        );
    }
 
    public function testDoUpdateRestrictions_failsOnReadOnly() {
        $page = $this->createPage( __METHOD__, 'ABC' );
        $user = $this->getTestSysop()->getUser();
        $cascade = false;
 
        // Set read only
        $readOnly = $this->getMockBuilder( ReadOnlyMode::class )
            ->disableOriginalConstructor()
            ->setMethods( [ 'isReadOnly', 'getReason' ] )
            ->getMock();
        $readOnly->expects( $this->once() )
            ->method( 'isReadOnly' )
            ->will( $this->returnValue( true ) );
        $readOnly->expects( $this->once() )
            ->method( 'getReason' )
            ->will( $this->returnValue( 'Some Read Only Reason' ) );
        $this->setService( 'ReadOnlyMode', $readOnly );
 
        $status = $page->doUpdateRestrictions( [], [], $cascade, 'aReason', $user, [] );
        $this->assertFalse( $status->isOK() );
        $this->assertSame( 'readonlytext', $status->getMessage()->getKey() );
    }
 
    public function testDoUpdateRestrictions_returnsGoodIfNothingChanged() {
        $page = $this->createPage( __METHOD__, 'ABC' );
        $user = $this->getTestSysop()->getUser();
        $cascade = false;
        $limit = [ 'edit' => 'sysop' ];
 
        $status = $page->doUpdateRestrictions(
            $limit,
            [],
            $cascade,
            'aReason',
            $user,
            []
        );
 
        // The first entry should have a logId as it did something
        $this->assertTrue( $status->isGood() );
        $this->assertInternalType( 'int', $status->getValue() );
 
        $status = $page->doUpdateRestrictions(
            $limit,
            [],
            $cascade,
            'aReason',
            $user,
            []
        );
 
        // The second entry should not have a logId as nothing changed
        $this->assertTrue( $status->isGood() );
        $this->assertNull( $status->getValue() );
    }
 
    public function testDoUpdateRestrictions_logEntryTypeAndAction() {
        $page = $this->createPage( __METHOD__, 'ABC' );
        $user = $this->getTestSysop()->getUser();
        $cascade = false;
 
        // Protect the page
        $status = $page->doUpdateRestrictions(
            [ 'edit' => 'sysop' ],
            [],
            $cascade,
            'aReason',
            $user,
            []
        );
        $this->assertTrue( $status->isGood() );
        $this->assertInternalType( 'int', $status->getValue() );
        $this->assertSelect(
            'logging',
            [ 'log_type', 'log_action' ],
            [ 'log_id' => $status->getValue() ],
            [ [ 'protect', 'protect' ] ]
        );
 
        // Modify the protection
        $status = $page->doUpdateRestrictions(
            [ 'edit' => 'somethingElse' ],
            [],
            $cascade,
            'aReason',
            $user,
            []
        );
        $this->assertTrue( $status->isGood() );
        $this->assertInternalType( 'int', $status->getValue() );
        $this->assertSelect(
            'logging',
            [ 'log_type', 'log_action' ],
            [ 'log_id' => $status->getValue() ],
            [ [ 'protect', 'modify' ] ]
        );
 
        // Remove the protection
        $status = $page->doUpdateRestrictions(
            [],
            [],
            $cascade,
            'aReason',
            $user,
            []
        );
        $this->assertTrue( $status->isGood() );
        $this->assertInternalType( 'int', $status->getValue() );
        $this->assertSelect(
            'logging',
            [ 'log_type', 'log_action' ],
            [ 'log_id' => $status->getValue() ],
            [ [ 'protect', 'unprotect' ] ]
        );
    }
 
    public function testNewPageUpdater() {
        $user = $this->getTestUser()->getUser();
        $page = $this->newPage( __METHOD__, __METHOD__ );
 
        $content = $this->getMockBuilder( WikitextContent::class )
            ->setConstructorArgs( [ 'Hello World' ] )
            ->setMethods( [ 'getParserOutput' ] )
            ->getMock();
        $content->expects( $this->once() )
            ->method( 'getParserOutput' )
            ->willReturn( new ParserOutput( 'HTML' ) );
 
        $preparedEditBefore = $page->prepareContentForEdit( $content, null, $user );
 
        // provide context, so the cache can be kept in place
        $slotsUpdate = new revisionSlotsUpdate();
        $slotsUpdate->modifyContent( SlotRecord::MAIN, $content );
 
        $updater = $page->newPageUpdater( $user, $slotsUpdate );
        $updater->setContent( SlotRecord::MAIN, $content );
        $revision = $updater->saveRevision(
            CommentStoreComment::newUnsavedComment( 'test' ),
            EDIT_NEW
        );
 
        $preparedEditAfter = $page->prepareContentForEdit( $content, $revision, $user );
 
        $this->assertSame( $revision->getId(), $page->getLatest() );
 
        // Parsed output must remain cached throughout.
        $this->assertSame( $preparedEditBefore->output, $preparedEditAfter->output );
    }
 
    public function testGetDerivedDataUpdater() {
        $admin = $this->getTestSysop()->getUser();
 
        $page = $this->createPage( __METHOD__, __METHOD__ );
        $page = TestingAccessWrapper::newFromObject( $page );
 
        $revision = $page->getRevision()->getRevisionRecord();
        $user = $revision->getUser();
 
        $slotsUpdate = new RevisionSlotsUpdate();
        $slotsUpdate->modifyContent( SlotRecord::MAIN, new WikitextContent( 'Hello World' ) );
 
        // get a virgin updater
        $updater1 = $page->getDerivedDataUpdater( $user );
        $this->assertFalse( $updater1->isUpdatePrepared() );
 
        $updater1->prepareUpdate( $revision );
 
        // Re-use updater with same revision or content, even if base changed
        $this->assertSame( $updater1, $page->getDerivedDataUpdater( $user, $revision ) );
 
        $slotsUpdate = RevisionSlotsUpdate::newFromContent(
            [ SlotRecord::MAIN => $revision->getContent( SlotRecord::MAIN ) ]
        );
        $this->assertSame( $updater1, $page->getDerivedDataUpdater( $user, null, $slotsUpdate ) );
 
        // Don't re-use for edit if base revision ID changed
        $this->assertNotSame(
            $updater1,
            $page->getDerivedDataUpdater( $user, null, $slotsUpdate, true )
        );
 
        // Don't re-use with different user
        $updater2a = $page->getDerivedDataUpdater( $admin, null, $slotsUpdate );
        $updater2a->prepareContent( $admin, $slotsUpdate, false );
 
        $updater2b = $page->getDerivedDataUpdater( $user, null, $slotsUpdate );
        $updater2b->prepareContent( $user, $slotsUpdate, false );
        $this->assertNotSame( $updater2a, $updater2b );
 
        // Don't re-use with different content
        $updater3 = $page->getDerivedDataUpdater( $admin, null, $slotsUpdate );
        $updater3->prepareUpdate( $revision );
        $this->assertNotSame( $updater2b, $updater3 );
 
        // Don't re-use if no context given
        $updater4 = $page->getDerivedDataUpdater( $admin );
        $updater4->prepareUpdate( $revision );
        $this->assertNotSame( $updater3, $updater4 );
 
        // Don't re-use if AGAIN no context given
        $updater5 = $page->getDerivedDataUpdater( $admin );
        $this->assertNotSame( $updater4, $updater5 );
 
        // Don't re-use cached "virgin" unprepared updater
        $updater6 = $page->getDerivedDataUpdater( $admin, $revision );
        $this->assertNotSame( $updater5, $updater6 );
    }
 
    protected function assertPreparedEditEquals(
        PreparedEdit $edit, PreparedEdit $edit2, $message = ''
    ) {
        // suppress differences caused by a clock tick between generating the two PreparedEdits
        if ( abs( $edit->timestamp - $edit2->timestamp ) < 3 ) {
            $edit2 = clone $edit2;
            $edit2->timestamp = $edit->timestamp;
        }
        $this->assertEquals( $edit, $edit2, $message );
    }
 
    protected function assertPreparedEditNotEquals(
        PreparedEdit $edit, PreparedEdit $edit2, $message = ''
    ) {
        if ( abs( $edit->timestamp - $edit2->timestamp ) < 3 ) {
            $edit2 = clone $edit2;
            $edit2->timestamp = $edit->timestamp;
        }
        $this->assertNotEquals( $edit, $edit2, $message );
    }
 
}