Question

我创建了一个存储库类来访问我的数据库，然后使用FakeItEasy库进行了单元测试。使用真实存储库我得到了预期的结果，而使用假存储库则返回null。

[TestClass]
public class clientRepositoryTest
{
    [TestMethod]
    public void GetclientById()
    {
        var fakeRepository = A.Fake<IclientRepository>();
        const int expectedclient = 1;

        IclientRepository realRepository = new clientRepository();
        var realResult = realRepository.GetclientById(expectedclient); // returns expected object

        try
        {
            A.CallTo(() => fakeRepository.GetclientById(expectedclient)).MustHaveHappened();
            var fakeResult = fakeRepository.GetSupplierById(expectedSupplier); // returns null
            A.CallTo(() => fakeRepository.GetSupplierById(expectedSupplier).IdSupplier).Equals(expectedSupplier); 
        }
        catch (Exception ex)
        {
            //The current proxy generator can not intercept the specified method for the following reason:
            // - Non virtual methods can not be intercepted.
        }
    }

Answer 1

在拨打任何实际功能呼叫之前，您需要确保拨打所有内部虚假呼叫，如下所示

 A.CallTo(() => fakeRepository.GetclientById(expectedclient)).WithAnyArguments().Returns(Fakeobject/harcoded object);

然后去单元测试电话

 var fakeResult = fakeRepository.GetSupplierById(expectedSupplier);

之后去找MustHaveHappened / MustNotHaveHappened / Equals

A.CallTo(() => fakeRepository.GetclientById(expectedclient)).MustHaveHappened();
A.CallTo(() => fakeRepository.GetSupplierById(expectedSupplier).IdSupplier).Equals(expectedSupplier);

实施应该是这样的

[TestClass]
    public class clientRepositoryTest
    {
        [TestMethod]
        public void GetclientById()
        {
            var fakeRepository = A.Fake<IclientRepository>();
            const int expectedclient = 1;

            IclientRepository realRepository = new clientRepository();
            var realResult = realRepository.GetclientById(expectedclient); // returns expected object

            try
            {
                A.CallTo(() => fakeRepository.GetclientById(expectedclient)).WithAnyArguments().Returns(Fakeobject/harcoded object);
                var fakeResult = fakeRepository.GetSupplierById(expectedSupplier); // returns null
        A.CallTo(() => fakeRepository.GetclientById(expectedclient)).MustHaveHappened();
                A.CallTo(() => fakeRepository.GetSupplierById(expectedSupplier).IdSupplier).Equals(expectedSupplier); 
            }
            catch (Exception ex)
            {
                //The current proxy generator can not intercept the specified method for the following reason:
                // - Non virtual methods can not be intercepted.
            }
        }

FakeitEasy返回null对象

1 个答案: