RevisionRendererTest.php

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<?php
 
namespace MediaWiki\Tests\Revision;
 
use CommentStoreComment;
use Content;
use Language;
use LogicException;
use MediaWiki\Revision\MutableRevisionRecord;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Revision\RevisionRenderer;
use MediaWiki\Revision\SlotRecord;
use MediaWikiTestCase;
use MediaWiki\User\UserIdentityValue;
use ParserOptions;
use ParserOutput;
use PHPUnit\Framework\MockObject\MockObject;
use Title;
use User;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\ILoadBalancer;
use WikitextContent;
 
class RevisionRendererTest extends MediaWikiTestCase {
 
    private function getMockTitle( $articleId, $revisionId ) {
        $mock = $this->getMockBuilder( Title::class )
            ->disableOriginalConstructor()
            ->getMock();
        $mock->expects( $this->any() )
            ->method( 'getNamespace' )
            ->will( $this->returnValue( NS_MAIN ) );
        $mock->expects( $this->any() )
            ->method( 'getText' )
            ->will( $this->returnValue( __CLASS__ ) );
        $mock->expects( $this->any() )
            ->method( 'getPrefixedText' )
            ->will( $this->returnValue( __CLASS__ ) );
        $mock->expects( $this->any() )
            ->method( 'getDBkey' )
            ->will( $this->returnValue( __CLASS__ ) );
        $mock->expects( $this->any() )
            ->method( 'getArticleID' )
            ->will( $this->returnValue( $articleId ) );
        $mock->expects( $this->any() )
            ->method( 'getLatestRevId' )
            ->will( $this->returnValue( $revisionId ) );
        $mock->expects( $this->any() )
            ->method( 'getContentModel' )
            ->will( $this->returnValue( CONTENT_MODEL_WIKITEXT ) );
        $mock->expects( $this->any() )
            ->method( 'getPageLanguage' )
            ->will( $this->returnValue( Language::factory( 'en' ) ) );
        $mock->expects( $this->any() )
            ->method( 'isContentPage' )
            ->will( $this->returnValue( true ) );
        $mock->expects( $this->any() )
            ->method( 'equals' )
            ->willReturnCallback(
                function ( Title $other ) use ( $mock ) {
                    return $mock->getArticleID() === $other->getArticleID();
                }
            );
        $mock->expects( $this->any() )
            ->method( 'userCan' )
            ->willReturnCallback(
                function ( $perm, User $user ) use ( $mock ) {
                    return $user->isAllowed( $perm );
                }
            );
 
        return $mock;
    }
 
    private function getMockDatabaseConnection( $maxRev = 100, $linkCount = 0 ) {
        $db = $this->getMock( IDatabase::class );
        $db->method( 'selectField' )
            ->willReturnCallback(
                function ( $table, $fields, $cond ) use ( $maxRev, $linkCount ) {
                    return $this->selectFieldCallback(
                        $table,
                        $fields,
                        $cond,
                        $maxRev,
                        $linkCount
                    );
                }
            );
 
        return $db;
    }
 
    private function newRevisionRenderer( $maxRev = 100, $useMaster = false ) {
        $dbIndex = $useMaster ? DB_MASTER : DB_REPLICA;
 
        $db = $this->getMockDatabaseConnection( $maxRev );
 
        $lb = $this->getMock( ILoadBalancer::class );
        $lb->method( 'getConnection' )
            ->with( $dbIndex )
            ->willReturn( $db );
        $lb->method( 'getConnectionRef' )
            ->with( $dbIndex )
            ->willReturn( $db );
        $lb->method( 'getLazyConnectionRef' )
            ->with( $dbIndex )
            ->willReturn( $db );
 
        return new RevisionRenderer( $lb );
    }
 
    private function selectFieldCallback( $table, $fields, $cond, $maxRev ) {
        if ( [ $table, $fields, $cond ] === [ 'revision', 'MAX(rev_id)', [] ] ) {
            return $maxRev;
        }
 
        $this->fail( 'Unexpected call to selectField' );
        throw new LogicException( 'Ooops' ); // Can't happen, make analyzer happy
    }
 
    public function testGetRenderedRevision_new() {
        $renderer = $this->newRevisionRenderer( 100 );
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
        $text .= "* [[Link It]]\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $rr = $renderer->getRenderedRevision( $rev, $options );
 
        $this->assertFalse( $rr->isContentDeleted(), 'isContentDeleted' );
 
        $this->assertSame( $rev, $rr->getRevision() );
        $this->assertSame( $options, $rr->getOptions() );
 
        $html = $rr->getRevisionParserOutput()->getText();
 
        $this->assertContains( 'page:' . __CLASS__, $html );
        $this->assertContains( 'rev:101', $html ); // from speculativeRevIdCallback
        $this->assertContains( 'user:Frank', $html );
        $this->assertContains( 'time:20180101000003', $html );
 
        $this->assertSame( $html, $rr->getSlotParserOutput( SlotRecord::MAIN )->getText() );
    }
 
    public function testGetRenderedRevision_current() {
        $renderer = $this->newRevisionRenderer( 100 );
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setId( 21 ); // current!
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $rr = $renderer->getRenderedRevision( $rev, $options );
 
        $this->assertFalse( $rr->isContentDeleted(), 'isContentDeleted' );
 
        $this->assertSame( $rev, $rr->getRevision() );
        $this->assertSame( $options, $rr->getOptions() );
 
        $html = $rr->getRevisionParserOutput()->getText();
 
        $this->assertContains( 'page:' . __CLASS__, $html );
        $this->assertContains( 'rev:21', $html );
        $this->assertContains( 'user:Frank', $html );
        $this->assertContains( 'time:20180101000003', $html );
 
        $this->assertSame( $html, $rr->getSlotParserOutput( SlotRecord::MAIN )->getText() );
    }
 
    public function testGetRenderedRevision_master() {
        $renderer = $this->newRevisionRenderer( 100, true ); // use master
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setId( 21 ); // current!
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $rr = $renderer->getRenderedRevision( $rev, $options, null, [ 'use-master' => true ] );
 
        $this->assertFalse( $rr->isContentDeleted(), 'isContentDeleted' );
 
        $html = $rr->getRevisionParserOutput()->getText();
 
        $this->assertContains( 'rev:21', $html );
 
        $this->assertSame( $html, $rr->getSlotParserOutput( SlotRecord::MAIN )->getText() );
    }
 
    public function testGetRenderedRevision_old() {
        $renderer = $this->newRevisionRenderer( 100 );
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setId( 11 ); // old!
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $rr = $renderer->getRenderedRevision( $rev, $options );
 
        $this->assertFalse( $rr->isContentDeleted(), 'isContentDeleted' );
 
        $this->assertSame( $rev, $rr->getRevision() );
        $this->assertSame( $options, $rr->getOptions() );
 
        $html = $rr->getRevisionParserOutput()->getText();
 
        $this->assertContains( 'page:' . __CLASS__, $html );
        $this->assertContains( 'rev:11', $html );
        $this->assertContains( 'user:Frank', $html );
        $this->assertContains( 'time:20180101000003', $html );
 
        $this->assertSame( $html, $rr->getSlotParserOutput( 'main' )->getText() );
    }
 
    public function testGetRenderedRevision_suppressed() {
        $renderer = $this->newRevisionRenderer( 100 );
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setId( 11 ); // old!
        $rev->setVisibility( RevisionRecord::DELETED_TEXT ); // suppressed!
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $rr = $renderer->getRenderedRevision( $rev, $options );
 
        $this->assertNull( $rr, 'getRenderedRevision' );
    }
 
    public function testGetRenderedRevision_privileged() {
        $renderer = $this->newRevisionRenderer( 100 );
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setId( 11 ); // old!
        $rev->setVisibility( RevisionRecord::DELETED_TEXT ); // suppressed!
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $sysop = $this->getTestUser( [ 'sysop' ] )->getUser(); // privileged!
        $rr = $renderer->getRenderedRevision( $rev, $options, $sysop );
 
        $this->assertTrue( $rr->isContentDeleted(), 'isContentDeleted' );
 
        $this->assertSame( $rev, $rr->getRevision() );
        $this->assertSame( $options, $rr->getOptions() );
 
        $html = $rr->getRevisionParserOutput()->getText();
 
        // Suppressed content should be visible for sysops
        $this->assertContains( 'page:' . __CLASS__, $html );
        $this->assertContains( 'rev:11', $html );
        $this->assertContains( 'user:Frank', $html );
        $this->assertContains( 'time:20180101000003', $html );
 
        $this->assertSame( $html, $rr->getSlotParserOutput( 'main' )->getText() );
    }
 
    public function testGetRenderedRevision_raw() {
        $renderer = $this->newRevisionRenderer( 100 );
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setId( 11 ); // old!
        $rev->setVisibility( RevisionRecord::DELETED_TEXT ); // suppressed!
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $text = "";
        $text .= "* page:{{PAGENAME}}\n";
        $text .= "* rev:{{REVISIONID}}\n";
        $text .= "* user:{{REVISIONUSER}}\n";
        $text .= "* time:{{REVISIONTIMESTAMP}}\n";
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( $text ) );
 
        $options = ParserOptions::newCanonical( 'canonical' );
        $rr = $renderer->getRenderedRevision(
            $rev,
            $options,
            null,
            [ 'audience' => RevisionRecord::RAW ]
        );
 
        $this->assertTrue( $rr->isContentDeleted(), 'isContentDeleted' );
 
        $this->assertSame( $rev, $rr->getRevision() );
        $this->assertSame( $options, $rr->getOptions() );
 
        $html = $rr->getRevisionParserOutput()->getText();
 
        // Suppressed content should be visible in raw mode
        $this->assertContains( 'page:' . __CLASS__, $html );
        $this->assertContains( 'rev:11', $html );
        $this->assertContains( 'user:Frank', $html );
        $this->assertContains( 'time:20180101000003', $html );
 
        $this->assertSame( $html, $rr->getSlotParserOutput( 'main' )->getText() );
    }
 
    public function testGetRenderedRevision_multi() {
        $renderer = $this->newRevisionRenderer();
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setUser( new UserIdentityValue( 9, 'Frank', 0 ) );
        $rev->setTimestamp( '20180101000003' );
        $rev->setComment( CommentStoreComment::newUnsavedComment( '' ) );
 
        $rev->setContent( SlotRecord::MAIN, new WikitextContent( '[[Kittens]]' ) );
        $rev->setContent( 'aux', new WikitextContent( '[[Goats]]' ) );
 
        $rr = $renderer->getRenderedRevision( $rev );
 
        $combinedOutput = $rr->getRevisionParserOutput();
        $mainOutput = $rr->getSlotParserOutput( SlotRecord::MAIN );
        $auxOutput = $rr->getSlotParserOutput( 'aux' );
 
        $combinedHtml = $combinedOutput->getText();
        $mainHtml = $mainOutput->getText();
        $auxHtml = $auxOutput->getText();
 
        $this->assertContains( 'Kittens', $mainHtml );
        $this->assertContains( 'Goats', $auxHtml );
        $this->assertNotContains( 'Goats', $mainHtml );
        $this->assertNotContains( 'Kittens', $auxHtml );
        $this->assertContains( 'Kittens', $combinedHtml );
        $this->assertContains( 'Goats', $combinedHtml );
        $this->assertContains( '>aux<', $combinedHtml, 'slot header' );
        $this->assertNotContains( '<mw:slotheader', $combinedHtml, 'slot header placeholder' );
 
        // make sure output wrapping works right
        $this->assertContains( 'class="mw-parser-output"', $mainHtml );
        $this->assertContains( 'class="mw-parser-output"', $auxHtml );
        $this->assertContains( 'class="mw-parser-output"', $combinedHtml );
 
        // there should be only one wrapper div
        $this->assertSame( 1, preg_match_all( '#class="mw-parser-output"#', $combinedHtml ) );
        $this->assertNotContains( 'class="mw-parser-output"', $combinedOutput->getRawText() );
 
        $combinedLinks = $combinedOutput->getLinks();
        $mainLinks = $mainOutput->getLinks();
        $auxLinks = $auxOutput->getLinks();
        $this->assertTrue( isset( $combinedLinks[NS_MAIN]['Kittens'] ), 'links from main slot' );
        $this->assertTrue( isset( $combinedLinks[NS_MAIN]['Goats'] ), 'links from aux slot' );
        $this->assertFalse( isset( $mainLinks[NS_MAIN]['Goats'] ), 'no aux links in main' );
        $this->assertFalse( isset( $auxLinks[NS_MAIN]['Kittens'] ), 'no main links in aux' );
    }
 
    public function testGetRenderedRevision_noHtml() {
        $mockContent = $this->getMockBuilder( WikitextContent::class )
            ->setMethods( [ 'getParserOutput' ] )
            ->setConstructorArgs( [ 'Whatever' ] )
            ->getMock();
        $mockContent->method( 'getParserOutput' )
            ->willReturnCallback( function ( Title $title, $revId = null,
                ParserOptions $options = null, $generateHtml = true
            ) {
                if ( !$generateHtml ) {
                    return new ParserOutput( null );
                } else {
                    $this->fail( 'Should not be called with $generateHtml == true' );
                    return null; // never happens, make analyzer happy
                }
            } );
 
        $renderer = $this->newRevisionRenderer();
        $title = $this->getMockTitle( 7, 21 );
 
        $rev = new MutableRevisionRecord( $title );
        $rev->setContent( SlotRecord::MAIN, $mockContent );
        $rev->setContent( 'aux', $mockContent );
 
        // NOTE: we are testing the private combineSlotOutput() callback here.
        $rr = $renderer->getRenderedRevision( $rev );
 
        $output = $rr->getSlotParserOutput( SlotRecord::MAIN, [ 'generate-html' => false ] );
        $this->assertFalse( $output->hasText(), 'hasText' );
 
        $output = $rr->getRevisionParserOutput( [ 'generate-html' => false ] );
        $this->assertFalse( $output->hasText(), 'hasText' );
    }
 
}