PNGTest.php

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<?php
class PNGHandlerTest extends MediaWikiTestCase {

    protected $handler;
    protected $repo;
    protected $backend;
    protected $filePath;

    protected function setUp() {
        parent::setUp();

        $this->filePath = __DIR__ . '/../../data/media';
        $this->backend = new FSFileBackend( array(
            'name' => 'localtesting',
            'lockManager' => 'nullLockManager',
            'containerPaths' => array( 'data' => $this->filePath )
        ) );
        $this->repo = new FSRepo( array(
            'name' => 'temp',
            'url' => 'http://localhost/thumbtest',
            'backend' => $this->backend
        ) );
        $this->handler = new PNGHandler();
    }

    public function testInvalidFile() {
        $res = $this->handler->getMetadata( null, $this->filePath . '/README' );
        $this->assertEquals( PNGHandler::BROKEN_FILE, $res );
    }

    public function testIsAnimanted( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->isAnimatedImage( $file );
        $this->assertEquals( $expected, $actual );
    }

    public static function provideIsAnimated() {
        return array(
            array( 'Animated_PNG_example_bouncing_beach_ball.png', true ),
            array( '1bit-png.png', false ),
        );
    }

    public function testGetImageArea( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->getImageArea( $file, $file->getWidth(), $file->getHeight() );
        $this->assertEquals( $expected, $actual );
    }

    public static function provideGetImageArea() {
        return array(
            array( '1bit-png.png', 2500 ),
            array( 'greyscale-png.png', 2500 ),
            array( 'Png-native-test.png', 126000 ),
            array( 'Animated_PNG_example_bouncing_beach_ball.png', 10000 ),
        );
    }

    public function testIsMetadataValid( $metadata, $expected ) {
        $actual = $this->handler->isMetadataValid( null, $metadata );
        $this->assertEquals( $expected, $actual );
    }

    public static function provideIsMetadataValid() {
        return array(
            array( PNGHandler::BROKEN_FILE, PNGHandler::METADATA_GOOD ),
            array( '', PNGHandler::METADATA_BAD ),
            array( null, PNGHandler::METADATA_BAD ),
            array( 'Something invalid!', PNGHandler::METADATA_BAD ),
            array( 'a:6:{s:10:"frameCount";i:0;s:9:"loopCount";i:1;s:8:"duration";d:0;s:8:"bitDepth";i:8;s:9:"colorType";s:10:"truecolour";s:8:"metadata";a:1:{s:15:"_MW_PNG_VERSION";i:1;}}', PNGHandler::METADATA_GOOD ),
        );
    }

    public function testGetMetadata( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->getMetadata( $file, "$this->filePath/$filename" );
//      $this->assertEquals( unserialize( $expected ), unserialize( $actual ) );
        $this->assertEquals( ( $expected ), ( $actual ) );
    }

    public static function provideGetMetadata() {
        return array(
            array( 'rgb-na-png.png', 'a:6:{s:10:"frameCount";i:0;s:9:"loopCount";i:1;s:8:"duration";d:0;s:8:"bitDepth";i:8;s:9:"colorType";s:10:"truecolour";s:8:"metadata";a:1:{s:15:"_MW_PNG_VERSION";i:1;}}' ),
            array( 'xmp.png', 'a:6:{s:10:"frameCount";i:0;s:9:"loopCount";i:1;s:8:"duration";d:0;s:8:"bitDepth";i:1;s:9:"colorType";s:14:"index-coloured";s:8:"metadata";a:2:{s:12:"SerialNumber";s:9:"123456789";s:15:"_MW_PNG_VERSION";i:1;}}' ),
        );
    }

    private function dataFile( $name, $type ) {
        return new UnregisteredLocalFile( false, $this->repo,
            "mwstore://localtesting/data/$name", $type );
    }
}