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