tests/phpunit/includes/media/JpegMetadataExtractorTest.php

   1 <?php
   2 /*
   3  * @todo Could use a test of extended XMP segments. Hard to find programs that
   4  * create example files, and creating my own in vim propbably wouldn't
   5  * serve as a very good "test". (Adobe photoshop probably creates such files
   6  * but it costs money). The implementation of it currently in MediaWiki is based
   7  * solely on reading the standard, without any real world test files.
   8  */
   9 class JpegMetadataExtractorTest extends MediaWikiTestCase {
  10
  11         public function setUp() {
  12                 $this->filePath = dirname( __FILE__ ) . '/../../data/media/';
  13         }
  14
  15         public function testUtf8Comment() {
  16                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-utf.jpg' );
  17                 $this->assertEquals( array( 'UTF-8 JPEG Comment — ¼' ), $res['COM'] );
  18         }
  19         /** The file is iso-8859-1, but it should get auto converted */
  20         public function testIso88591Comment() {
  21                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-iso8859-1.jpg' );
  22                 $this->assertEquals( array( 'ISO-8859-1 JPEG Comment - ¼' ), $res['COM'] );
  23         }
  24         /** Comment values that are non-textual (random binary junk) should not be shown.
  25          * The example test file has a comment with a 0x5 byte in it which is a control character
  26          * and considered binary junk for our purposes.
  27          */
  28         public function testBinaryCommentStripped() {
  29                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-binary.jpg' );
  30                 $this->assertEmpty( $res['COM'] );
  31         }
  32         /* Very rarely a file can have multiple comments.
  33          *   Order of comments is based on order inside the file.
  34          */
  35         public function testMultipleComment() {
  36                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-comment-multiple.jpg' );
  37                 $this->assertEquals( array( 'foo', 'bar' ), $res['COM'] );
  38         }
  39         public function testXMPExtraction() {
  40                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-psir.jpg' );
  41                 $expected = file_get_contents( $this->filePath . 'jpeg-xmp-psir.xmp' );
  42                 $this->assertEquals( $expected, $res['XMP'] );
  43         }
  44         public function testPSIRExtraction() {
  45                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-psir.jpg' );
  46                 $expected = '50686f746f73686f7020332e30003842494d04040000000000181c02190004746573741c02190003666f6f1c020000020004';
  47                 $this->assertEquals( $expected, bin2hex( $res['PSIR'] ) );
  48         }
  49         public function testXMPExtractionAltAppId() {
  50                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-alt.jpg' );
  51                 $expected = file_get_contents( $this->filePath . 'jpeg-xmp-psir.xmp' );
  52                 $this->assertEquals( $expected, $res['XMP'] );
  53         }
  54
  55
  56         public function testIPTCHashComparisionNoHash() {
  57                 $segments = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-xmp-psir.jpg' );
  58                 $res = JpegMetadataExtractor::doPSIR( $segments['PSIR'] );
  59
  60                 $this->assertEquals( 'iptc-no-hash', $res );
  61         }
  62         public function testIPTCHashComparisionBadHash() {
  63                 $segments = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-iptc-bad-hash.jpg' );
  64                 $res = JpegMetadataExtractor::doPSIR( $segments['PSIR'] );
  65
  66                 $this->assertEquals( 'iptc-bad-hash', $res );
  67         }
  68         public function testIPTCHashComparisionGoodHash() {
  69                 $segments = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'jpeg-iptc-good-hash.jpg' );
  70                 $res = JpegMetadataExtractor::doPSIR( $segments['PSIR'] );
  71
  72                 $this->assertEquals( 'iptc-good-hash', $res );
  73         }
  74         public function testExifByteOrder() {
  75                 $res = JpegMetadataExtractor::segmentSplitter( $this->filePath . 'exif-user-comment.jpg' );
  76                 $expected = 'BE';
  77                 $this->assertEquals( $expected, $res['byteOrder'] );
  78         }
  79 }