MediaHandlerTest.php

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<?php

class MediaHandlerTest extends MediaWikiTestCase {

    public 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" );
            }
        }
    }
}