elmah.ir-post120-code10.cs

using System;
using System.Linq;
using NUnit.Framework;
using TddStore.Core;
using TddStore.Core.Exceptions;
using Telerik.JustMock;

namespace TddStore.UnitTests
{
  [TestFixture]
  class OrderServiceTests
  {
    private OrderService _orderService;
    private IOrderDataService _orderDataService;
    private ICustomerService _customerService;

    [TestFixtureSetUp]
    public void SetupTestFixture()
    {
      _orderDataService = Mock.Create<IOrderDataService>();
      _customerService = Mock.Create<ICustomerService>();
      _orderService = new OrderService(_orderDataService, _customerService);
    }


    [Test]
    public void WhenUserPlacesACorrectOrderThenAnOrderNumberShouldBeReturned()
    {
      //Arrange
      var shoppingCart = new ShoppingCart();
      shoppingCart.Items.Add(new ShoppingCartItem { ItemId = Guid.NewGuid(), Quantity = 0 });
      var customerId = Guid.NewGuid();
      var expectedOrderId = Guid.NewGuid();


      Mock.Arrange(() => _orderDataService.Save(Arg.IsAny<Order>()))
        .Returns(expectedOrderId)
        .OccursOnce();

      //Act
      var result = _orderService.PlaceOrder(customerId, shoppingCart);


      //Assert
      Assert.AreEqual(expectedOrderId, result);
      Mock.Assert(_orderDataService);
    }


    [Test]
    public void WhenAUserAttemptsToOrderAnItemWithAQuantityOfZeroThrowInvalidOrderException()
    {
      //Arrange
      var shoppingCart = new ShoppingCart();
      shoppingCart.Items.Add(new ShoppingCartItem { ItemId = Guid.NewGuid(), Quantity = 0 });
      var customerId = Guid.NewGuid();
      var expectedOrderId = Guid.NewGuid();

      Mock.Arrange(() => _orderDataService.Save(Arg.IsAny<Order>()))
        .Returns(expectedOrderId)
        .OccursNever();


      //Act
      try
      {
        _orderService.PlaceOrder(customerId, shoppingCart);
      }
      catch(InvalidOrderException ex)
      {
        //Assert
        Mock.Assert(_orderDataService);
        Assert.Pass();
      }



      //Assert
      Assert.Fail();
    }
  }
}