mediawiki-extensions-Math/tests/MathRendererTest.php

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<?php
/**
* Test the database access and core functionality of MathRenderer.
*
* @group Math
*/
class MathRendererTest extends MediaWikiTestCase {
const SOME_TEX = "a+b";
const TEXVCCHECK_INPUT = '\forall \epsilon \exist \delta';
const TEXVCCHECK_OUTPUT = '\forall \epsilon \exists \delta '; // be aware of the s at exists
protected static $hasRestbase;
public static function setUpBeforeClass() {
$rbi = new MathRestbaseInterface();
self::$hasRestbase = $rbi->checkBackend( true );
}
/**
* Sets up the fixture, for example, opens a network connection.
* This method is called before a test is executed.
*/
protected function setUp() {
parent::setUp();
if ( !self::$hasRestbase ) {
$this->markTestSkipped( "Can not connect to Restbase Math interface." );
}
}
/**
* Checks the tex and hash functions
* @covers MathRenderer::getTex()
* @covers MathRenderer::__construct()
*/
public function testBasics() {
$renderer = $this->getMockForAbstractClass( 'MathRenderer', array( self::SOME_TEX ) );
// check if the TeX input was corretly passed to the class
$this->assertEquals( self::SOME_TEX, $renderer->getTex(), "test getTex" );
$this->assertEquals( $renderer->isChanged(), false, "test if changed is initially false" );
}
/**
* Test behavior of writeCache() when nothing was changed
* @covers MathRenderer::writeCache()
*/
public function testWriteCacheSkip() {
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'writeToDatabase',
'render',
'getMathTableName',
'getHtmlOutput'
) )->disableOriginalConstructor()->getMock();
$renderer->expects( $this->never() )->method( 'writeToDatabase' );
$renderer->writeCache();
}
/**
* Test behavior of writeCache() when values were changed.
* @covers MathRenderer::writeCache()
*/
public function testWriteCache() {
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'writeToDatabase',
'render',
'getMathTableName',
'getHtmlOutput'
) )->disableOriginalConstructor()->getMock();
$renderer->expects( $this->never() )->method( 'writeToDatabase' );
$renderer->writeCache();
}
public function testSetPurge() {
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'render',
'getMathTableName',
'getHtmlOutput'
) )->disableOriginalConstructor()->getMock();
$renderer->setPurge();
$this->assertEquals( $renderer->isPurge(), true, "Test purge." );
}
public function testDisableCheckingAlways() {
$this->setMwGlobals( "wgMathDisableTexFilter", 'never' );
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'render',
'getMathTableName',
'getHtmlOutput',
'readFromDatabase',
'setTex'
) )->setConstructorArgs( array( self::TEXVCCHECK_INPUT ) )->getMock();
$renderer->expects( $this->never() )->method( 'readFromDatabase' );
$renderer->expects( $this->once() )->method( 'setTex' )->with( self::TEXVCCHECK_OUTPUT );
$this->assertEquals( $renderer->checkTex(), true );
// now setTex sould not be called again
$this->assertEquals( $renderer->checkTex(), true );
}
public function testDisableCheckingNever() {
$this->setMwGlobals( "wgMathDisableTexFilter", 'always' );
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'render',
'getMathTableName',
'getHtmlOutput',
'readFromDatabase',
'setTex'
) )->setConstructorArgs( array( self::TEXVCCHECK_INPUT ) )->getMock();
$renderer->expects( $this->never() )->method( 'readFromDatabase' );
$renderer->expects( $this->never() )->method( 'setTex' );
$this->assertEquals( $renderer->checkTex(), true );
}
public function testCheckingNewUnknown() {
$this->setMwGlobals( "wgMathDisableTexFilter", 'new' );
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'render',
'getMathTableName',
'getHtmlOutput',
'readFromDatabase',
'setTex'
) )->setConstructorArgs( array( self::TEXVCCHECK_INPUT ) )->getMock();
$renderer->expects( $this->once() )->method( 'readFromDatabase' )
->will( $this->returnValue( false ) );
$renderer->expects( $this->once() )->method( 'setTex' )->with( self::TEXVCCHECK_OUTPUT );
$this->assertEquals( $renderer->checkTex(), true );
// now setTex sould not be called again
$this->assertEquals( $renderer->checkTex(), true );
}
public function testCheckingNewKnown() {
$this->setMwGlobals( "wgMathDisableTexFilter", 'new' );
$renderer =
$this->getMockBuilder( 'MathRenderer' )->setMethods( array(
'render',
'getMathTableName',
'getHtmlOutput',
'readFromDatabase',
'setTex'
) )->setConstructorArgs( array( self::TEXVCCHECK_INPUT ) )->getMock();
$renderer->expects( $this->exactly( 2 ) )->method( 'readFromDatabase' )
->will( $this->returnValue( true ) );
$renderer->expects( $this->never() )->method( 'setTex' );
$this->assertEquals( $renderer->checkTex(), true );
// we don't mark a object as checked even though we rely on the database cache
// so readFromDatabase will be called again
$this->assertEquals( $renderer->checkTex(), true );
}
}