XMPTest.php

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<?php
class XMPTest extends MediaWikiTestCase {

        function setUp() {
                if ( !wfDl( 'xml' ) ) {
                        $this->markTestSkipped( '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 function dataXMPParse() {
                $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;
        }

        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 );
        }

        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 );
        }
        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 );
        }

}