tests/phpunit/includes/media/PNGMetadataExtractorTest.php

   1 <?php
   2
   3 /**
   4  * @group Media
   5  * @covers PNGMetadataExtractor
   6  */
   7 class PNGMetadataExtractorTest extends MediaWikiTestCase {
   8
   9         protected function setUp() {
  10                 parent::setUp();
  11                 $this->filePath = __DIR__ . '/../../data/media/';
  12         }
  13
  14         /**
  15          * Tests zTXt tag (compressed textual metadata)
  16          */
  17         public function testPngNativetZtxt() {
  18                 $this->checkPHPExtension( 'zlib' );
  19
  20                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
  21                         'Png-native-test.png' );
  22                 $expected = "foo bar baz foo foo foo foof foo foo foo foo";
  23                 $this->assertArrayHasKey( 'text', $meta );
  24                 $meta = $meta['text'];
  25                 $this->assertArrayHasKey( 'Make', $meta );
  26                 $this->assertArrayHasKey( 'x-default', $meta['Make'] );
  27
  28                 $this->assertEquals( $expected, $meta['Make']['x-default'] );
  29         }
  30
  31         /**
  32          * Test tEXt tag (Uncompressed textual metadata)
  33          */
  34         public function testPngNativeText() {
  35                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
  36                         'Png-native-test.png' );
  37                 $expected = "Some long image desc";
  38                 $this->assertArrayHasKey( 'text', $meta );
  39                 $meta = $meta['text'];
  40                 $this->assertArrayHasKey( 'ImageDescription', $meta );
  41                 $this->assertArrayHasKey( 'x-default', $meta['ImageDescription'] );
  42                 $this->assertArrayHasKey( '_type', $meta['ImageDescription'] );
  43
  44                 $this->assertEquals( $expected, $meta['ImageDescription']['x-default'] );
  45         }
  46
  47         /**
  48          * tEXt tags must be encoded iso-8859-1 (vs iTXt which are utf-8)
  49          * Make sure non-ascii characters get converted properly
  50          */
  51         public function testPngNativeTextNonAscii() {
  52                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
  53                         'Png-native-test.png' );
  54
  55                 // Note the Copyright symbol here is a utf-8 one
  56                 // (aka \xC2\xA9) where in the file its iso-8859-1
  57                 // encoded as just \xA9.
  58                 $expected = "© 2010 Bawolff";
  59
  60                 $this->assertArrayHasKey( 'text', $meta );
  61                 $meta = $meta['text'];
  62                 $this->assertArrayHasKey( 'Copyright', $meta );
  63                 $this->assertArrayHasKey( 'x-default', $meta['Copyright'] );
  64
  65                 $this->assertEquals( $expected, $meta['Copyright']['x-default'] );
  66         }
  67
  68         /**
  69          * Given a normal static PNG, check the animation metadata returned.
  70          */
  71         public function testStaticPngAnimationMetadata() {
  72                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
  73                         'Png-native-test.png' );
  74
  75                 $this->assertEquals( 0, $meta['frameCount'] );
  76                 $this->assertEquals( 1, $meta['loopCount'] );
  77                 $this->assertEquals( 0, $meta['duration'] );
  78         }
  79
  80         /**
  81          * Given an animated APNG image file
  82          * check it gets animated metadata right.
  83          */
  84         public function testApngAnimationMetadata() {
  85                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
  86                         'Animated_PNG_example_bouncing_beach_ball.png' );
  87
  88                 $this->assertEquals( 20, $meta['frameCount'] );
  89                 // Note loop count of 0 = infinity
  90                 $this->assertEquals( 0, $meta['loopCount'] );
  91                 $this->assertEquals( 1.5, $meta['duration'], '', 0.00001 );
  92         }
  93
  94         public function testPngBitDepth8() {
  95                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
  96                         'Png-native-test.png' );
  97
  98                 $this->assertEquals( 8, $meta['bitDepth'] );
  99         }
 100
 101         public function testPngBitDepth1() {
 102                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
 103                         '1bit-png.png' );
 104                 $this->assertEquals( 1, $meta['bitDepth'] );
 105         }
 106
 107         public function testPngIndexColour() {
 108                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
 109                         'Png-native-test.png' );
 110
 111                 $this->assertEquals( 'index-coloured', $meta['colorType'] );
 112         }
 113
 114         public function testPngRgbColour() {
 115                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
 116                         'rgb-png.png' );
 117                 $this->assertEquals( 'truecolour-alpha', $meta['colorType'] );
 118         }
 119
 120         public function testPngRgbNoAlphaColour() {
 121                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
 122                         'rgb-na-png.png' );
 123                 $this->assertEquals( 'truecolour', $meta['colorType'] );
 124         }
 125
 126         public function testPngGreyscaleColour() {
 127                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
 128                         'greyscale-png.png' );
 129                 $this->assertEquals( 'greyscale-alpha', $meta['colorType'] );
 130         }
 131
 132         public function testPngGreyscaleNoAlphaColour() {
 133                 $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
 134                         'greyscale-na-png.png' );
 135                 $this->assertEquals( 'greyscale', $meta['colorType'] );
 136         }
 137 }