Assert.AreEqual失败

Question

我写了服务层代码如下：

public GetAllCategoriesResponse GetAllCategories()
{
     GetAllCategoriesResponse response = new GetAllCategoriesResponse();
     IEnumerable<Category> categories = _categoryRepository.GetAll();
     response.Categories = categories.ConvertToCategoryViews();

     return response;
}

然后我按如下方式编写了我的Test类：

[TestClass]
public class ProductCatalogServiceTest
{
   Mock<ICategoryRepository> _categoryRepository;
   ProductCatalogService _catalogService;

    [TestInitialize]
    public void Setup()
    {
        _categoryRepository = new Mock<ICategoryRepository>();
        _catagoryService = new ProductCatagoryService( _categoryRepository.Object);
    }

    [TestMethod]
    public void Test_All_Catagories()
    {
        AutoMapperBootStrapper.ConfigureAutoMapper();
        var catagories = new List<Category>();
        catagories.Add(new Category() {Id=1, Name = "Half Shirt" });
        catagories.Add(new Category() {Id=2, Name = "Full Shirt" });
        catagories.Add(new Category() {Id=4, Name = "Pant" });

        _categoryRepository.Setup(m => m.GetAll()).Returns(catagories.AsEnumerable());

        var result = _catagoryService.GetAllCategories();

        var response = new GetAllCategoriesResponse();
        response.Categories = catagories.ConvertToCategoryViews();

        Assert.AreEqual(response, result);
    }
}

Category和CategoryView之间的映射如下：

public class AutoMapperBootStrapper
{

    public static void ConfigureAutoMapper()
    {
        // Category
        Mapper.CreateMap<Category, CategoryView>();
     }
}

当我运行我的测试时，会显示以下消息： Assert.AreEqual失败。预期：Shoppingcart.Services.Messages.GetAllCategoriesResponse＆gt;。实际：Shoppingcart.Services.Messages.GetAllCategoriesResponse＆GT;