PhpOffice\PhpPresentation\Shape\RichText::setVertical PHP Method

    public function setVertical($value = false)
    {
        $this->vertical = $value;
        return $this;
    }

 public function testGetSetVertical()
 {
     $object = new RichText();
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\RichText', $object->setVertical());
     $this->assertFalse($object->isVertical());
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\RichText', $object->setVertical(true));
     $this->assertTrue($object->isVertical());
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\RichText', $object->setVertical(false));
     $this->assertFalse($object->isVertical());
 }