Pop\Image\Gd::resource PHP Метод

    public function resource()
    {
        return $this->resource;
    }

 public function testGetImageResource()
 {
     $i = new Gd(__DIR__ . '/../tmp/test.jpg');
     $i->setStrokeColor(new Rgb(0, 0, 0))->drawRectangle(10, 10, 100, 100);
     $this->assertNotNull($i->resource());
 }