public function testDeleteCoupon()
{
$createResponse = $this->createCoupon();
$this->assertInstanceOf(Coupons::COUPON_RESPONSE_CLASS, $createResponse);
$deleteResponse = $this->coupons->deleteCoupon($createResponse->getId());
$this->assertInstanceOf(Coupons::DELETE_RESPONSE_CLASS, $deleteResponse);
$this->assertTrue($deleteResponse->getDeleted());
$this->assertEquals($createResponse->getId(), $deleteResponse->getId());
}