Pop\Graph\Graph::setBarWidth PHP Method

    public function setBarWidth($width)
    {
        $this->barWidth = (int) $width;
        return $this;
    }

 public function testSetBarWidth()
 {
     $g = new Graph($this->imageOptions);
     $g->setBarWidth(5);
     $this->assertEquals(5, $g->getBarWidth());
 }