JpegMetadataExtractorTest.php

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<?php
class JpegMetadataExtractorTest extends MediaWikiTestCase {

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

                $this->filePath = __DIR__ . '/../../data/media/';
        }

        public function testUtf8Comment( $file ) {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . $file );
                $this->assertEquals( array( 'UTF-8 JPEG Comment — ¼' ), $res['COM'] );
        }

        public static function provideUtf8Comment() {
                return array(
                        array( 'jpeg-comment-utf.jpg' ),
                        array( 'jpeg-padding-even.jpg' ),
                        array( 'jpeg-padding-odd.jpg' ),
                );
        }

        public function testIso88591Comment() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-iso8859-1.jpg' );
                $this->assertEquals( array( 'ISO-8859-1 JPEG Comment - ¼' ), $res['COM'] );
        }

        public function testBinaryCommentStripped() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-binary.jpg' );
                $this->assertEmpty( $res['COM'] );
        }

        /* Very rarely a file can have multiple comments.
         *   Order of comments is based on order inside the file.
         */
        public function testMultipleComment() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-multiple.jpg' );
                $this->assertEquals( array( 'foo', 'bar' ), $res['COM'] );
        }

        public function testXMPExtraction() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-psir.jpg' );
                $expected = file_get_contents( $this->filePath . 'jpeg-xmp-psir.xmp' );
                $this->assertEquals( $expected, $res['XMP'] );
        }

        public function testPSIRExtraction() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-psir.jpg' );
                $expected = '50686f746f73686f7020332e30003842494d04040000000000181c02190004746573741c02190003666f6f1c020000020004';
                $this->assertEquals( $expected, bin2hex( $res['PSIR'][0] ) );
        }

        public function testXMPExtractionAltAppId() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-alt.jpg' );
                $expected = file_get_contents( $this->filePath . 'jpeg-xmp-psir.xmp' );
                $this->assertEquals( $expected, $res['XMP'] );
        }


        public function testIPTCHashComparisionNoHash() {
                $segments = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-psir.jpg' );
                $res = JpegMetadataExtractor::doPSIR( $segments['PSIR'][0] );

                $this->assertEquals( 'iptc-no-hash', $res );
        }

        public function testIPTCHashComparisionBadHash() {
                $segments = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-iptc-bad-hash.jpg' );
                $res = JpegMetadataExtractor::doPSIR( $segments['PSIR'][0] );

                $this->assertEquals( 'iptc-bad-hash', $res );
        }

        public function testIPTCHashComparisionGoodHash() {
                $segments = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-iptc-good-hash.jpg' );
                $res = JpegMetadataExtractor::doPSIR( $segments['PSIR'][0] );

                $this->assertEquals( 'iptc-good-hash', $res );
        }

        public function testExifByteOrder() {
                $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'exif-user-comment.jpg' );
                $expected = 'BE';
                $this->assertEquals( $expected, $res['byteOrder'] );
        }
}