Pop\Graph\Graph::setStrokeColor PHP 메소드

    public function setStrokeColor(ColorInterface $color)
    {
        $this->strokeColor = $color;
        return $this;
    }

 public function testSetStrokeColor()
 {
     $g = new Graph($this->imageOptions);
     $g->setStrokeColor(new Rgb(128, 128, 128));
     $this->assertEquals(new Rgb(128, 128, 128), $g->getStrokeColor());
 }