Contao\CoreBundle\Test\Contao\GdImageTest::testFromFile PHP Method

    public function testFromFile($type)
    {
        $image = imagecreatetruecolor(100, 100);
        imagefill($image, 0, 0, imagecolorallocatealpha($image, 0, 0, 0, 0));
        $method = 'image' . $type;
        $method($image, self::$rootDir . '/test.' . $type);
        imagedestroy($image);
        $image = GdImage::fromFile(new \File('test.' . $type));
        $this->assertInternalType('resource', $image->getResource());
        $this->assertEquals(100, imagesx($image->getResource()));
        $this->assertEquals(100, imagesy($image->getResource()));
    }