public function testFont()
{
$object = new Axis();
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Axis', $object->setFont());
$this->assertNull($object->getFont());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Axis', $object->setFont(new Font()));
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Style\\Font', $object->getFont());
}