BitmapScalingTest.php

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<?php

class BitmapScalingTest extends MediaWikiTestCase {

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

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

    public 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 );
    }

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

            /* Very tall images */
            [
                [ 1000, 100 ],
                [
                    'width' => 5, 'height' => 1,
                    'physicalWidth' => 5, 'physicalHeight' => 1,
                    'page' => 1, 'interlace' => false,
                ],
                [ 'width' => 5 ],
                'Very wide image',
            ],

            [
                [ 100, 1000 ],
                [
                    'width' => 1, 'height' => 10,
                    'physicalWidth' => 1, 'physicalHeight' => 10,
                    'page' => 1, 'interlace' => false,
                ],
                [ 'width' => 1 ],
                'Very high image',
            ],
            [
                [ 100, 1000 ],
                [
                    'width' => 1, 'height' => 5,
                    'physicalWidth' => 1, 'physicalHeight' => 10,
                    'page' => 1, 'interlace' => false,
                ],
                [ 'width' => 10, 'height' => 5 ],
                'Very high image with height set',
            ],
            /* Max image area */
            [
                [ 4000, 4000 ],
                [
                    'width' => 5000, 'height' => 5000,
                    'physicalWidth' => 4000, 'physicalHeight' => 4000,
                    'page' => 1, 'interlace' => false,
                ],
                [ 'width' => 5000 ],
                'Bigger than max image size but doesn\'t need scaling',
            ],
            /* Max interlace image area */
            [
                [ 4000, 4000 ],
                [
                    'width' => 5000, 'height' => 5000,
                    'physicalWidth' => 4000, 'physicalHeight' => 4000,
                    'page' => 1, 'interlace' => false,
                ],
                [ 'width' => 5000, 'interlace' => true ],
                'Interlace bigger than max interlace area',
            ],
        ];
    }

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

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

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