public function testRefundFailure()
{
$this->gateway->setPassword('111');
$response = $this->gateway->refund($this->options)->send();
$this->assertInstanceOf('\\Omnipay\\Paytrace\\Message\\Check\\Response', $response);
$this->assertFalse($response->isSuccessful());
$this->assertSame('998', $response->getCode());
$this->assertSame('Log in failed.', $response->getMessage());
}
