BitmapScalingTest.php

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<?php

class BitmapScalingTest extends MediaWikiTestCase {

        protected function setUp() {
                parent::setUp();

                $this->setMwGlobals( array(
                        'wgMaxImageArea' => 1.25e7, // 3500x3500
                        'wgCustomConvertCommand' => 'dummy', // Set so that we don't get client side rendering
                ) );
        }

        function testNormaliseParams( $fileDimensions, $expectedParams, $params, $msg ) {
                $file = new FakeDimensionFile( $fileDimensions );
                $handler = new BitmapHandler;
                $valid = $handler->normaliseParams( $file, $params );
                $this->assertTrue( $valid );
                $this->assertEquals( $expectedParams, $params, $msg );
        }

        function provideNormaliseParams() {
                return array(
                        /* Regular resize operations */
                        array(
                                array( 1024, 768 ),
                                array(
                                        'width' => 512, 'height' => 384,
                                        'physicalWidth' => 512, 'physicalHeight' => 384,
                                        'page' => 1,
                                ),
                                array( 'width' => 512 ),
                                'Resizing with width set',
                        ),
                        array(
                                array( 1024, 768 ),
                                array(
                                        'width' => 512, 'height' => 384,
                                        'physicalWidth' => 512, 'physicalHeight' => 384,
                                        'page' => 1,
                                ),
                                array( 'width' => 512, 'height' => 768 ),
                                'Resizing with height set too high',
                        ),
                        array(
                                array( 1024, 768 ),
                                array(
                                        'width' => 512, 'height' => 384,
                                        'physicalWidth' => 512, 'physicalHeight' => 384,
                                        'page' => 1,
                                ),
                                array( 'width' => 1024, 'height' => 384 ),
                                'Resizing with height set',
                        ),

                        /* Very tall images */
                        array(
                                array( 1000, 100 ),
                                array(
                                        'width' => 5, 'height' => 1,
                                        'physicalWidth' => 5, 'physicalHeight' => 1,
                                        'page' => 1,
                                ),
                                array( 'width' => 5 ),
                                'Very wide image',
                        ),

                        array(
                                array( 100, 1000 ),
                                array(
                                        'width' => 1, 'height' => 10,
                                        'physicalWidth' => 1, 'physicalHeight' => 10,
                                        'page' => 1,
                                ),
                                array( 'width' => 1 ),
                                'Very high image',
                        ),
                        array(
                                array( 100, 1000 ),
                                array(
                                        'width' => 1, 'height' => 5,
                                        'physicalWidth' => 1, 'physicalHeight' => 10,
                                        'page' => 1,
                                ),
                                array( 'width' => 10, 'height' => 5 ),
                                'Very high image with height set',
                        ),
                        /* Max image area */
                        array(
                                array( 4000, 4000 ),
                                array(
                                        'width' => 5000, 'height' => 5000,
                                        'physicalWidth' => 4000, 'physicalHeight' => 4000,
                                        'page' => 1,
                                ),
                                array( 'width' => 5000 ),
                                'Bigger than max image size but doesn\'t need scaling',
                        ),
                );
        }

        function testTooBigImage() {
                $file = new FakeDimensionFile( array( 4000, 4000 ) );
                $handler = new BitmapHandler;
                $params = array( 'width' => '3700' ); // Still bigger than max size.
                $this->assertEquals( 'TransformParameterError',
                        get_class( $handler->doTransform( $file, 'dummy path', '', $params ) ) );
        }

        function testTooBigMustRenderImage() {
                $file = new FakeDimensionFile( array( 4000, 4000 ) );
                $file->mustRender = true;
                $handler = new BitmapHandler;
                $params = array( 'width' => '5000' ); // Still bigger than max size.
                $this->assertEquals( 'TransformParameterError',
                        get_class( $handler->doTransform( $file, 'dummy path', '', $params ) ) );
        }

        function testImageArea() {
                $file = new FakeDimensionFile( array( 7, 9 ) );
                $handler = new BitmapHandler;
                $this->assertEquals( 63, $handler->getImageArea( $file ) );
        }
}

class FakeDimensionFile extends File {
        public $mustRender = false;

        public function __construct( $dimensions ) {
                parent::__construct( Title::makeTitle( NS_FILE, 'Test' ),
                        new NullRepo( null ) );

                $this->dimensions = $dimensions;
        }

        public function getWidth( $page = 1 ) {
                return $this->dimensions[0];
        }

        public function getHeight( $page = 1 ) {
                return $this->dimensions[1];
        }

        public function mustRender() {
                return $this->mustRender;
        }

        public function getPath() {
                return '';
        }
}