JBZoo\Image\Image::isGif PHP Method

    public function isGif()
    {
        return Helper::isGif($this->_mime);
    }

 public function testGetInfoGif()
 {
     $original = Helper::getOrig('butterfly.gif');
     $img = new Image($original);
     $info = $img->getInfo();
     is(478, $info['width']);
     is(640, $info['height']);
     is('image/gif', $info['mime']);
     is('portrait', $info['orient']);
     isEmpty($info['exif']);
     isTrue($img->isGif());
 }