public function testCompletePurchase()
{
$options = array('request_params' => array('appid' => '123456', 'mch_id' => '789456', 'result_code' => 'SUCCESS'));
/**
* @var CompletePurchaseResponse $response
*/
$response = $this->gateway->completePurchase($options)->send();
$this->assertFalse($response->isSuccessful());
}