tests/phpunit/includes/media/XMPTest.php

   1 <?php
   2 class XMPTest extends MediaWikiTestCase {
   3
   4         protected function setUp() {
   5                 parent::setUp();
   6                 if ( !wfDl( 'xml' ) ) {
   7                         $this->markTestSkipped( 'Requires libxml to do XMP parsing' );
   8                 }
   9         }
  10
  11         /**
  12          * Put XMP in, compare what comes out...
  13          *
  14          * @param $xmp String the actual xml data.
  15          * @param $expected Array expected result of parsing the xmp.
  16          * @param $info String Short sentence on what's being tested.
  17          *
  18          * @dataProvider provideXMPParse
  19          */
  20         public function testXMPParse( $xmp, $expected, $info ) {
  21                 if ( !is_string( $xmp ) || !is_array( $expected ) ) {
  22                         throw new Exception( "Invalid data provided to " . __METHOD__ );
  23                 }
  24                 $reader = new XMPReader;
  25                 $reader->parse( $xmp );
  26                 $this->assertEquals( $expected, $reader->getResults(), $info, 0.0000000001 );
  27         }
  28
  29         public static function provideXMPParse() {
  30                 $xmpPath = __DIR__ . '/../../data/xmp/';
  31                 $data = array();
  32
  33                 // $xmpFiles format: array of arrays with first arg file base name,
  34                 // with the actual file having .xmp on the end for the xmp
  35                 // and .result.php on the end for a php file containing the result
  36                 // array. Second argument is some info on what's being tested.
  37                 $xmpFiles = array(
  38                         array( '1', 'parseType=Resource test' ),
  39                         array( '2', 'Structure with mixed attribute and element props' ),
  40                         array( '3', 'Extra qualifiers (that should be ignored)' ),
  41                         array( '3-invalid', 'Test ignoring qualifiers that look like normal props' ),
  42                         array( '4', 'Flash as qualifier' ),
  43                         array( '5', 'Flash as qualifier 2' ),
  44                         array( '6', 'Multiple rdf:Description' ),
  45                         array( '7', 'Generic test of several property types' ),
  46                         array( 'flash', 'Test of Flash property' ),
  47                         array( 'invalid-child-not-struct', 'Test child props not in struct or ignored' ),
  48                         array( 'no-recognized-props', 'Test namespace and no recognized props' ),
  49                         array( 'no-namespace', 'Test non-namespaced attributes are ignored' ),
  50                         array( 'bag-for-seq', "Allow bag's instead of seq's. (bug 27105)" ),
  51                         array( 'utf16BE', 'UTF-16BE encoding' ),
  52                         array( 'utf16LE', 'UTF-16LE encoding' ),
  53                         array( 'utf32BE', 'UTF-32BE encoding' ),
  54                         array( 'utf32LE', 'UTF-32LE encoding' ),
  55                         array( 'xmpExt', 'Extended XMP missing second part' ),
  56                         array( 'gps', 'Handling of exif GPS parameters in XMP' ),
  57                 );
  58
  59                 foreach ( $xmpFiles as $file ) {
  60                         $xmp = file_get_contents( $xmpPath . $file[0] . '.xmp' );
  61                         // I'm not sure if this is the best way to handle getting the
  62                         // result array, but it seems kind of big to put directly in the test
  63                         // file.
  64                         $result = null;
  65                         include( $xmpPath . $file[0] . '.result.php' );
  66                         $data[] = array( $xmp, $result, '[' . $file[0] . '.xmp] ' . $file[1] );
  67                 }
  68
  69                 return $data;
  70         }
  71
  72         /** Test ExtendedXMP block support. (Used when the XMP has to be split
  73          * over multiple jpeg segments, due to 64k size limit on jpeg segments.
  74          *
  75          * @todo This is based on what the standard says. Need to find a real
  76          * world example file to double check the support for this is right.
  77          */
  78         function testExtendedXMP() {
  79                 $xmpPath = __DIR__ . '/../../data/xmp/';
  80                 $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
  81                 $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );
  82
  83                 $md5sum = '28C74E0AC2D796886759006FBE2E57B7'; // of xmpExt2.xmp
  84                 $length = pack( 'N', strlen( $extendedXMP ) );
  85                 $offset = pack( 'N', 0 );
  86                 $extendedPacket = $md5sum . $length . $offset . $extendedXMP;
  87
  88                 $reader = new XMPReader();
  89                 $reader->parse( $standardXMP );
  90                 $reader->parseExtended( $extendedPacket );
  91                 $actual = $reader->getResults();
  92
  93                 $expected = array(
  94                         'xmp-exif' => array(
  95                                 'DigitalZoomRatio' => '0/10',
  96                                 'Flash' => 9,
  97                                 'FNumber' => '2/10',
  98                         )
  99                 );
 100
 101                 $this->assertEquals( $expected, $actual );
 102         }
 103
 104         /**
 105          * This test has an extended XMP block with a wrong guid (md5sum)
 106          * and thus should only return the StandardXMP, not the ExtendedXMP.
 107          */
 108         function testExtendedXMPWithWrongGUID() {
 109                 $xmpPath = __DIR__ . '/../../data/xmp/';
 110                 $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
 111                 $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );
 112
 113                 $md5sum = '28C74E0AC2D796886759006FBE2E57B9'; // Note last digit.
 114                 $length = pack( 'N', strlen( $extendedXMP ) );
 115                 $offset = pack( 'N', 0 );
 116                 $extendedPacket = $md5sum . $length . $offset . $extendedXMP;
 117
 118                 $reader = new XMPReader();
 119                 $reader->parse( $standardXMP );
 120                 $reader->parseExtended( $extendedPacket );
 121                 $actual = $reader->getResults();
 122
 123                 $expected = array(
 124                         'xmp-exif' => array(
 125                                 'DigitalZoomRatio' => '0/10',
 126                                 'Flash' => 9,
 127                         )
 128                 );
 129
 130                 $this->assertEquals( $expected, $actual );
 131         }
 132
 133         /**
 134          * Have a high offset to simulate a missing packet,
 135          * which should cause it to ignore the ExtendedXMP packet.
 136          */
 137         function testExtendedXMPMissingPacket() {
 138                 $xmpPath = __DIR__ . '/../../data/xmp/';
 139                 $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
 140                 $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );
 141
 142                 $md5sum = '28C74E0AC2D796886759006FBE2E57B7'; // of xmpExt2.xmp
 143                 $length = pack( 'N', strlen( $extendedXMP ) );
 144                 $offset = pack( 'N', 2048 );
 145                 $extendedPacket = $md5sum . $length . $offset . $extendedXMP;
 146
 147                 $reader = new XMPReader();
 148                 $reader->parse( $standardXMP );
 149                 $reader->parseExtended( $extendedPacket );
 150                 $actual = $reader->getResults();
 151
 152                 $expected = array(
 153                         'xmp-exif' => array(
 154                                 'DigitalZoomRatio' => '0/10',
 155                                 'Flash' => 9,
 156                         )
 157                 );
 158
 159                 $this->assertEquals( $expected, $actual );
 160         }
 161 }