如何模拟单元测试服务中存储库的方法

Question

我试图对我的服务进行单元测试，我模拟了所需的一切，我如何模拟服务调用的存储库方法，使其具有价值，代码不会中断，

这是我的单元测试：

public async Task Updateuser_ReturnsResponse()
{
// Arrange
var request = new UpdateUserRequest()
{
Guid = new Guid("92296ac1-f8e1-489a-a312-6ea9d31d60f8"),
FirstName = "TestFirst",
LastName = "TestLast",
PhoneWork = "9495467845",
EmailWork = "[e-mail]",
};
var respose = new UpdateUserResponse()
{
Success = true
};
var getGuidRequest = new GetGuidRequest()
{
Guid = request.Guid
};
var getGuidResponse = new GetGuidResponse()
{
Guid = request.Guid
};
var mockUserRepository = new Mock<IUserRepository>();
var mockAwsProxy = new Mock<IAwsProxy>();
mockUserRepository.Setup(s => s.UpdateUserAsync(request)).ReturnsAsync(respose);
mockUserRepository.Setup(i => i.GetGuidAsync(getGuidRequest)).ReturnsAsync(getGuidResponse);
var sut = new FromService.UserService(....);
// Act
var response = await sut.UpdateUserAsync(request);
// Assert
Assert.NotNull(response);
Assert.True(response.Success);
}

我的问题是调用-var-response=wait-sut时。UpdateUserAsync(请求(；它进入服务，这个GuidResponse是空的，所以它在之后中断，如GuidResponseNull:所示

public async Task<UpdateUserResponse> UpdateUserAsync(UpdateUserRequest request)
{
if (request.EmailWork.HasValue() || request.Role.HasValue())
{
var GuidResponse = await userRepository.GetGuidAsync(new GetGuidRequest
{
Guid = request.Guid
});
// it breaks here because GuidResponse is Null.
if (GuidResponse.Guid != null && request.EmailWork.HasValue())
{
.......

Answer 1

它失败了，因为在执行测试时，设置与实际提供给mock的内容不匹配。

使用It.Is<T>()匹配传递的参数

//...omitted for brevity
mockUserRepository
.Setup(_ => _.GetGuidAsync(It.Is<GetGuidRequest>(x => x.Guid == request.Guid)))
.ReturnsAsync(getGuidResponse);
//...omitted for brevity

假设模拟存储库就是注入SUT 的存储库

参考Moq Quickstart：匹配参数