MediaHandlerTest.php

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<?php

class MediaHandlerTest extends MediaWikiTestCase {

    public function testFitBoxWidth( $width, $height, $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$y, got: {z$result}x$y2" );
    }

    public static function provideTestFitBoxWidth() {
        return array_merge(
            static::generateTestFitBoxWidthData( 50, 50, [
                    50 => 50,
                    17 => 17,
                    18 => 18 ]
            ),
            static::generateTestFitBoxWidthData( 366, 300, [
                    50 => 61,
                    17 => 21,
                    18 => 22 ]
            ),
            static::generateTestFitBoxWidthData( 300, 366, [
                    50 => 41,
                    17 => 14,
                    18 => 15 ]
            ),
            static::generateTestFitBoxWidthData( 100, 400, [
                    50 => 12,
                    17 => 4,
                    18 => 4 ]
            )
        );
    }

    private static function generateTestFitBoxWidthData( $width, $height, $tests ) {
        $result = [];
        foreach ( $tests as $max => $expected ) {
            $result[] = [ $width, $height, $max, $expected ];
        }
        return $result;
    }
}