XMPTest.php

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<?php

class XMPTest extends MediaWikiTestCase {

    protected function setUp() {
        parent::setUp();
        $this->checkPHPExtension( 'exif' ); # Requires libxml to do XMP parsing
    }

    public function testXMPParse( $xmp, $expected, $info ) {
        if ( !is_string( $xmp ) || !is_array( $expected ) ) {
            throw new Exception( "Invalid data provided to " . __METHOD__ );
        }
        $reader = new XMPReader;
        $reader->parse( $xmp );
        $this->assertEquals( $expected, $reader->getResults(), $info, 0.0000000001 );
    }

    public static function provideXMPParse() {
        $xmpPath = __DIR__ . '/../../data/xmp/';
        $data = array();

        // $xmpFiles format: array of arrays with first arg file base name,
        // with the actual file having .xmp on the end for the xmp
        // and .result.php on the end for a php file containing the result
        // array. Second argument is some info on what's being tested.
        $xmpFiles = array(
            array( '1', 'parseType=Resource test' ),
            array( '2', 'Structure with mixed attribute and element props' ),
            array( '3', 'Extra qualifiers (that should be ignored)' ),
            array( '3-invalid', 'Test ignoring qualifiers that look like normal props' ),
            array( '4', 'Flash as qualifier' ),
            array( '5', 'Flash as qualifier 2' ),
            array( '6', 'Multiple rdf:Description' ),
            array( '7', 'Generic test of several property types' ),
            array( 'flash', 'Test of Flash property' ),
            array( 'invalid-child-not-struct', 'Test child props not in struct or ignored' ),
            array( 'no-recognized-props', 'Test namespace and no recognized props' ),
            array( 'no-namespace', 'Test non-namespaced attributes are ignored' ),
            array( 'bag-for-seq', "Allow bag's instead of seq's. (bug 27105)" ),
            array( 'utf16BE', 'UTF-16BE encoding' ),
            array( 'utf16LE', 'UTF-16LE encoding' ),
            array( 'utf32BE', 'UTF-32BE encoding' ),
            array( 'utf32LE', 'UTF-32LE encoding' ),
            array( 'xmpExt', 'Extended XMP missing second part' ),
            array( 'gps', 'Handling of exif GPS parameters in XMP' ),
        );

        foreach ( $xmpFiles as $file ) {
            $xmp = file_get_contents( $xmpPath . $file[0] . '.xmp' );
            // I'm not sure if this is the best way to handle getting the
            // result array, but it seems kind of big to put directly in the test
            // file.
            $result = null;
            include $xmpPath . $file[0] . '.result.php';
            $data[] = array( $xmp, $result, '[' . $file[0] . '.xmp] ' . $file[1] );
        }

        return $data;
    }

    public function testExtendedXMP() {
        $xmpPath = __DIR__ . '/../../data/xmp/';
        $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
        $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );

        $md5sum = '28C74E0AC2D796886759006FBE2E57B7'; // of xmpExt2.xmp
        $length = pack( 'N', strlen( $extendedXMP ) );
        $offset = pack( 'N', 0 );
        $extendedPacket = $md5sum . $length . $offset . $extendedXMP;

        $reader = new XMPReader();
        $reader->parse( $standardXMP );
        $reader->parseExtended( $extendedPacket );
        $actual = $reader->getResults();

        $expected = array(
            'xmp-exif' => array(
                'DigitalZoomRatio' => '0/10',
                'Flash' => 9,
                'FNumber' => '2/10',
            )
        );

        $this->assertEquals( $expected, $actual );
    }

    public function testExtendedXMPWithWrongGUID() {
        $xmpPath = __DIR__ . '/../../data/xmp/';
        $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
        $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );

        $md5sum = '28C74E0AC2D796886759006FBE2E57B9'; // Note last digit.
        $length = pack( 'N', strlen( $extendedXMP ) );
        $offset = pack( 'N', 0 );
        $extendedPacket = $md5sum . $length . $offset . $extendedXMP;

        $reader = new XMPReader();
        $reader->parse( $standardXMP );
        $reader->parseExtended( $extendedPacket );
        $actual = $reader->getResults();

        $expected = array(
            'xmp-exif' => array(
                'DigitalZoomRatio' => '0/10',
                'Flash' => 9,
            )
        );

        $this->assertEquals( $expected, $actual );
    }

    public function testExtendedXMPMissingPacket() {
        $xmpPath = __DIR__ . '/../../data/xmp/';
        $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
        $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );

        $md5sum = '28C74E0AC2D796886759006FBE2E57B7'; // of xmpExt2.xmp
        $length = pack( 'N', strlen( $extendedXMP ) );
        $offset = pack( 'N', 2048 );
        $extendedPacket = $md5sum . $length . $offset . $extendedXMP;

        $reader = new XMPReader();
        $reader->parse( $standardXMP );
        $reader->parseExtended( $extendedPacket );
        $actual = $reader->getResults();

        $expected = array(
            'xmp-exif' => array(
                'DigitalZoomRatio' => '0/10',
                'Flash' => 9,
            )
        );

        $this->assertEquals( $expected, $actual );
    }
}