MediaHandlerTest.php

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<?php

class MediaHandlerTest extends MediaWikiTestCase {
        function testFitBoxWidth() {
                $vals = array(
                        array(
                                'width' => 50,
                                'height' => 50,
                                'tests' => array(
                                        50 => 50,
                                        17 => 17,
                                        18 => 18 ) ),
                        array(
                                'width' => 366,
                                'height' => 300,
                                'tests' => array(
                                        50 => 61,
                                        17 => 21,
                                        18 => 22 ) ),
                        array(
                                'width' => 300,
                                'height' => 366,
                                'tests' => array(
                                        50 => 41,
                                        17 => 14,
                                        18 => 15 ) ),
                        array(
                                'width' => 100,
                                'height' => 400,
                                'tests' => array(
                                        50 => 12,
                                        17 => 4,
                                        18 => 4 ) ) );
                foreach ( $vals as $row ) {
                        $tests = $row['tests'];
                        $height = $row['height'];
                        $width = $row['width'];
                        foreach ( $tests as $max => $expected ) {
                                $y = round( $expected * $height / $width );
                                $result = MediaHandler::fitBoxWidth( $width, $height, $max );
                                $y2 = round( $result * $height / $width );
                                $this->assertEquals( $expected,
                                        $result,
                                        "($width, $height, $max) wanted: {$expected}x$y, got: {$result}x$y2" );
                        }
                }
        }
}