public void AddOrderSuccessfully()
{
Customer customer = new CustomerBuilder().GetCustomer();
Order order = new OrderBuilder().GetOrder(customer);
var listOrders = new List <Order>();
listOrders.Add(order);
_mockOrderRepository.Setup(x => x.Insert(order)).Verifiable();
_mockOrderRepository.Setup(x => x.GetByCustomerId(customer.Id)).Returns(listOrders.AsQueryable());
_service.Insert(order);
var ordersFromRepo = _service.GetByCustomerId(customer.Id);
_mockOrderRepository.Verify(x => x.Insert(order), Times.Once);
Assert.True(ordersFromRepo.Count == 1);
}