public void TestExternalSystemError()
{
Order order = new Order(123456, "Big Smoke", "Grove Street");
order.AddOrderItem(item1);
supplyService.BreakExternal();
try
{
supplyService.CreateDelivery(order);
Assert.Fail();
}
catch (MarketException e)
{
Assert.AreEqual((int)SupplyStatus.SupplySystemError, e.Status);
}
}