public function test034OfflineCreditReturn() { $directMarketData = new HpsDirectMarketData('123456'); $response = $this->service->refund(15.15)->withCard(TestCreditCard::validMastercardCreditCard())->withDirectMarketData($directMarketData)->execute(); $this->assertEquals(true, $response != null); $this->assertEquals('00', $response->responseCode); }