public function testUseCount()
 {
     //check that order with payment started counts as a use
     $discount = $this->objFromFixture("OrderDiscount", "paymentused");
     $payment = $this->objFromFixture("Payment", "paymentstarted_recent");
     //set timeout to 60 minutes
     Discount::config()->unpaid_use_timeout = 60;
     //set payment to be created 20 min ago
     $payment->Created = date('Y-m-d H:i:s', strtotime("-20 minutes"));
     $payment->write();
     $this->assertEquals(1, $discount->getUseCount());
     //set payment ot be created 2 days ago
     $payment->Created = date('Y-m-d H:i:s', strtotime("-2 days"));
     $payment->write();
     $this->assertEquals(0, $discount->getUseCount());
     //failed payments should be ignored
     $payment->Created = date('Y-m-d H:i:s', strtotime("-20 minutes"));
     $payment->Status = 'Void';
     $payment->write();
     $this->assertEquals(0, $discount->getUseCount());
 }