PNGMetadataExtractorTest.php

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<?php
class PNGMetadataExtractorTest extends MediaWikiTestCase {

        function setUp() {
                $this->filePath = dirname( __FILE__ ) . '/../../data/media/';   
        }
        function testPngNativetZtxt() {
                $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
                        'Png-native-test.png' );
                $expected = "foo bar baz foo foo foo foof foo foo foo foo";
                $this->assertArrayHasKey( 'text', $meta );
                $meta = $meta['text'];
                $this->assertArrayHasKey( 'Make', $meta );
                $this->assertArrayHasKey( 'x-default', $meta['Make'] );

                $this->assertEquals( $expected, $meta['Make']['x-default'] );
        }

        function testPngNativeText() {
                $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
                        'Png-native-test.png' );
                $expected = "Some long image desc";
                $this->assertArrayHasKey( 'text', $meta );
                $meta = $meta['text'];
                $this->assertArrayHasKey( 'ImageDescription', $meta );
                $this->assertArrayHasKey( 'x-default', $meta['ImageDescription'] );
                $this->assertArrayHasKey( '_type', $meta['ImageDescription'] );

                $this->assertEquals( $expected, $meta['ImageDescription']['x-default'] );
        }

        function testPngNativeTextNonAscii() {
                $meta = PNGMetadataExtractor::getMetadata( $this->filePath .
                        'Png-native-test.png' );

                // Note the Copyright symbol here is a utf-8 one
                // (aka \xC2\xA9) where in the file its iso-8859-1
                // encoded as just \xA9.
                $expected = "© 2010 Bawolff";


                $this->assertArrayHasKey( 'text', $meta );
                $meta = $meta['text'];
                $this->assertArrayHasKey( 'Copyright', $meta );
                $this->assertArrayHasKey( 'x-default', $meta['Copyright'] );

                $this->assertEquals( $expected, $meta['Copyright']['x-default'] );
        }