ExifRotationTest.php

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<?php

class ExifRotationTest extends MediaWikiTestCase {

        private $createdDirs = array();

        function setUp() {
                parent::setUp();
                $this->handler = new BitmapHandler();
                $filePath = dirname( __FILE__ ) . '/../../data/media';

                $tmpDir = wfTempDir() . '/exif-test-' . time() . '-' . mt_rand();
                $this->createdDirs[] = $tmpDir;

                $this->repo = new FSRepo( array(
                        'name'            => 'temp',
                        'url'             => 'http://localhost/thumbtest',
                        'backend'         => new FSFileBackend( array(
                                'name'           => 'localtesting',
                                'lockManager'    => 'nullLockManager',
                                'containerPaths' => array( 'temp-thumb' => $tmpDir, 'data' => $filePath )
                        ) )
                ) );
                if ( !wfDl( 'exif' ) ) {
                        $this->markTestSkipped( "This test needs the exif extension." );
                }
                global $wgShowEXIF;
                $this->show = $wgShowEXIF;
                $wgShowEXIF = true;

                global $wgEnableAutoRotation;
                $this->oldAuto = $wgEnableAutoRotation;
                $wgEnableAutoRotation = true;
        }

        public function tearDown() {
                global $wgShowEXIF, $wgEnableAutoRotation;
                $wgShowEXIF = $this->show;
                $wgEnableAutoRotation = $this->oldAuto;

                $this->tearDownFiles();
        }

        private function tearDownFiles() {
                foreach( $this->createdDirs as $dir ) {
                        wfRecursiveRemoveDir( $dir );
                }
        }

        function __destruct() {
                $this->tearDownFiles();
        }

        function testMetadata( $name, $type, $info ) {
                if ( !BitmapHandler::canRotate() ) {
                        $this->markTestSkipped( "This test needs a rasterizer that can auto-rotate." );
                }
                $file = $this->dataFile( $name, $type );
                $this->assertEquals( $info['width'], $file->getWidth(), "$name: width check" );
                $this->assertEquals( $info['height'], $file->getHeight(), "$name: height check" );
        }

        function testRotationRendering( $name, $type, $info, $thumbs ) {
                if ( !BitmapHandler::canRotate() ) {
                        $this->markTestSkipped( "This test needs a rasterizer that can auto-rotate." );
                }
                foreach( $thumbs as $size => $out ) {
                        if( preg_match('/^(\d+)px$/', $size, $matches ) ) {
                                $params = array(
                                        'width' => $matches[1],
                                );
                        } elseif ( preg_match( '/^(\d+)x(\d+)px$/', $size, $matches ) ) {
                                $params = array(
                                        'width' => $matches[1],
                                        'height' => $matches[2]
                                );
                        } else {
                                throw new MWException('bogus test data format ' . $size);
                        }

                        $file = $this->dataFile( $name, $type );
                        $thumb = $file->transform( $params, File::RENDER_NOW | File::RENDER_FORCE );

                        $this->assertEquals( $out[0], $thumb->getWidth(), "$name: thumb reported width check for $size" );
                        $this->assertEquals( $out[1], $thumb->getHeight(), "$name: thumb reported height check for $size" );

                        $gis = getimagesize( $thumb->getLocalCopyPath() );
                        if ($out[0] > $info['width']) {
                                // Physical image won't be scaled bigger than the original.
                                $this->assertEquals( $info['width'], $gis[0], "$name: thumb actual width check for $size");
                                $this->assertEquals( $info['height'], $gis[1], "$name: thumb actual height check for $size");
                        } else {
                                $this->assertEquals( $out[0], $gis[0], "$name: thumb actual width check for $size");
                                $this->assertEquals( $out[1], $gis[1], "$name: thumb actual height check for $size");
                        }
                }
        }

        private function dataFile( $name, $type ) {
                return new UnregisteredLocalFile( false, $this->repo,
                        "mwstore://localtesting/data/$name", $type );
        }

        function providerFiles() {
                return array(
                        array(
                                'landscape-plain.jpg',
                                'image/jpeg',
                                array(
                                        'width' => 1024,
                                        'height' => 768,
                                ),
                                array(
                                        '800x600px' => array( 800, 600 ),
                                        '9999x800px' => array( 1067, 800 ),
                                        '800px' => array( 800, 600 ),
                                        '600px' => array( 600, 450 ),
                                )
                        ),
                        array(
                                'portrait-rotated.jpg',
                                'image/jpeg',
                                array(
                                        'width' => 768, // as rotated
                                        'height' => 1024, // as rotated
                                ),
                                array(
                                        '800x600px' => array( 450, 600 ),
                                        '9999x800px' => array( 600, 800 ),
                                        '800px' => array( 800, 1067 ),
                                        '600px' => array( 600, 800 ),
                                )
                        )
                );
        }

        function testMetadataNoAutoRotate( $name, $type, $info ) {
                global $wgEnableAutoRotation;
                $wgEnableAutoRotation = false;

                $file = $this->dataFile( $name, $type );
                $this->assertEquals( $info['width'], $file->getWidth(), "$name: width check" );
                $this->assertEquals( $info['height'], $file->getHeight(), "$name: height check" );

                $wgEnableAutoRotation = true;
        }

        function testRotationRenderingNoAutoRotate( $name, $type, $info, $thumbs ) {
                global $wgEnableAutoRotation;
                $wgEnableAutoRotation = false;

                foreach( $thumbs as $size => $out ) {
                        if( preg_match('/^(\d+)px$/', $size, $matches ) ) {
                                $params = array(
                                        'width' => $matches[1],
                                );
                        } elseif ( preg_match( '/^(\d+)x(\d+)px$/', $size, $matches ) ) {
                                $params = array(
                                        'width' => $matches[1],
                                        'height' => $matches[2]
                                );
                        } else {
                                throw new MWException('bogus test data format ' . $size);
                        }

                        $file = $this->dataFile( $name, $type );
                        $thumb = $file->transform( $params, File::RENDER_NOW | File::RENDER_FORCE );

                        $this->assertEquals( $out[0], $thumb->getWidth(), "$name: thumb reported width check for $size" );
                        $this->assertEquals( $out[1], $thumb->getHeight(), "$name: thumb reported height check for $size" );

                        $gis = getimagesize( $thumb->getLocalCopyPath() );
                        if ($out[0] > $info['width']) {
                                // Physical image won't be scaled bigger than the original.
                                $this->assertEquals( $info['width'], $gis[0], "$name: thumb actual width check for $size");
                                $this->assertEquals( $info['height'], $gis[1], "$name: thumb actual height check for $size");
                        } else {
                                $this->assertEquals( $out[0], $gis[0], "$name: thumb actual width check for $size");
                                $this->assertEquals( $out[1], $gis[1], "$name: thumb actual height check for $size");
                        }
                }
                $wgEnableAutoRotation = true;
        }

        function providerFilesNoAutoRotate() {
                return array(
                        array(
                                'landscape-plain.jpg',
                                'image/jpeg',
                                array(
                                        'width' => 1024,
                                        'height' => 768,
                                ),
                                array(
                                        '800x600px' => array( 800, 600 ),
                                        '9999x800px' => array( 1067, 800 ),
                                        '800px' => array( 800, 600 ),
                                        '600px' => array( 600, 450 ),
                                )
                        ),
                        array(
                                'portrait-rotated.jpg',
                                'image/jpeg',
                                array(
                                        'width' => 1024, // since not rotated
                                        'height' => 768, // since not rotated
                                ),
                                array(
                                        '800x600px' => array( 800, 600 ),
                                        '9999x800px' => array( 1067, 800 ),
                                        '800px' => array( 800, 600 ),
                                        '600px' => array( 600, 450 ),
                                )
                        )
                );
        }
        
        
        const TEST_WIDTH = 100;
        const TEST_HEIGHT = 200;
        
        function testBitmapExtractPreRotationDimensions( $rotation, $expected ) {
                $result = $this->handler->extractPreRotationDimensions( array(
                                'physicalWidth' => self::TEST_WIDTH, 
                                'physicalHeight' => self::TEST_HEIGHT,
                        ), $rotation );
                $this->assertEquals( $expected, $result );
        }
        
        function provideBitmapExtractPreRotationDimensions() {
                return array(
                        array(
                                0,
                                array( self::TEST_WIDTH, self::TEST_HEIGHT ) 
                        ),
                        array(
                                90,
                                array( self::TEST_HEIGHT, self::TEST_WIDTH ) 
                        ),
                        array(
                                180,
                                array( self::TEST_WIDTH, self::TEST_HEIGHT ) 
                        ),
                        array(
                                270,
                                array( self::TEST_HEIGHT, self::TEST_WIDTH ) 
                        ),
                );
        }
}