def testCancelAllOpenOrders(self):
security=Stock(symbol='symbol', description='a stock', ISIN='US123456789', exchange=self.exchange)
order1=BuyOrder(account=self.account, security=security, price=13.2, share=10)
order2=BuyOrder(account=self.account, security=security, price=13.25, share=10)
self.session.add(order1)
self.session.add(order2)
self.session.commit()
tc=TradingCenter(self.session)
tc.cancel_all_open_orders()
self.assertEquals([], tc.open_orders)
