/**
  * @return CouponResponse
  */
 protected function createCoupon()
 {
     $duration = 'once';
     $percentOff = 50;
     $request = $this->coupons->createCouponRequest($duration)->setPercentOff($percentOff);
     return $this->coupons->createCoupon($request);
 }
 protected function setUp()
 {
     parent::setUp();
     $this->discounts = new Discounts($this->client);
     $this->customers = new Customers($this->client);
     $this->subscriptions = new Subscriptions($this->client);
     $this->coupons = new Coupons($this->client);
     $this->plans = new Plans($this->client);
     $this->couponId = $this->coupons->createCoupon($this->coupons->createCouponRequest('forever')->setPercentOff(50))->getId();
     $customerRequest = $this->customers->createCustomerRequest()->setCard(new CreateCardRequest(self::VISA_1, 1, 2020, 123));
     $this->customerId = $this->customers->createCustomer($customerRequest)->getId();
     $planRequest = $this->plans->createPlanRequest("discounts_test_plan" . rand(0, 999999), 350, 'usd', 'month', 'test plan');
     $this->planId = $this->plans->createPlan($planRequest)->getId();
 }