Contao\CoreBundle\Test\Contao\GdImageTest::testSaveToFile PHP Méthode

    public function testSaveToFile($type)
    {
        $file = self::$rootDir . '/test.' . $type;
        $image = GdImage::fromDimensions(100, 100);
        $image->saveToFile($file);
        $this->assertFileExists($file);
        $finfo = new \finfo(FILEINFO_MIME_TYPE);
        $this->assertEquals('image/' . $type, $finfo->file($file));
    }