public function testFill() { $object = new Series(); $this->assertInstanceOf('PhpOffice\\PhpPowerpoint\\Shape\\Chart\\Series', $object->setFill()); $this->assertNull($object->getFill()); $this->assertInstanceOf('PhpOffice\\PhpPowerpoint\\Shape\\Chart\\Series', $object->setFill(new Fill())); $this->assertInstanceOf('PhpOffice\\PhpPowerpoint\\Style\\Fill', $object->getFill()); }