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我正在尝试针对某些 EF4 对象编写一些 Mspec 测试。然而，他们正在返回误报。我不知道这是我编写测试的方式还是发生了其他事情。测试类如下：

[Subject(typeof (Product))]
public class When_loading_a_known_product 
{
    protected static Product product;
    protected static ProductDbContext dbContext;

    Establish context = () =>
    {
        dbContext = new ProductDbContext(ConnectionStringProvider.GetConnectionString(BusinessDomain.Product));
    };

    Because of = () =>
                     {
                         product = dbContext.Products.First(x => x.Id == 2688);
                     };

    // The next four tests should be false but all pass ( the actual count is 4 for the given record)
    It should_have_a_known_number_of_Classifications = () => product.Classifications.Count().Equals(9999);
    It should_have_a_known_number_of_Classifications2 = () => product.Classifications.Count().Equals(1);
    It should_have_a_known_number_of_Classifications3 = () => product.Classifications.Count().Equals(-99);
    It should_have_a_known_number_of_Classifications4 = () => product.Classifications.Count().Equals(4.5);
    //
}

在 Nunit 中编写的相同测试可以正常工作。

[Test]
public void It_should_have_a_known_number_of_Classifications()
{
    private ProductDbContext dbContext = new ProductDbContext(ConnectionStringProvider.GetConnectionString(BusinessDomain.Product));;
    Product product = dbContext.Products.Find(2688);
    // true
    Assert.That(product.Classifications.Count(), Is.EqualTo(4));

    // All of these will correctly regester as false
    //Assert.That(product.Classifications.Count(), Is.EqualTo(9999));
    //Assert.That(product.Classifications.Count(), Is.EqualTo(1));
    //Assert.That(product.Classifications.Count(), Is.EqualTo(-99));
    //Assert.That(product.Classifications.Count(), Is.EqualTo(4.5));
}

作为 EF4 和 MSpec 的新手，我希望有人能指出我的错误。

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1 回答 1

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您应该使用 MSpec 的断言库：

It should_have_a_known_number_of_Classifications =
  () => product.Classifications.Count().ShouldEqual(9999);

MSpec（和 NUnit）根据框架方法 ( [Test], It) 中的代码是否引发异常来识别测试结果（成功、失败）。您使用 .NET Framework 的object.Equals()方法来断言仅返回 true 或 false。因此，MSpec 认为您的规范是成功的，因为Equals()不会引发不平等。

于 2012-06-26T12:13:38.143 回答