使用Moq进行单元测试的工作单元和通用存储库模式框架 [英] Unit Testing Unit of Work and Generic Repository Pattern framework using Moq

问题描述

我正在对使用Moq的工作单元和通用存储库的服务进行单元测试.问题是在服务类中，当我在调试模式下运行测试时，_subsiteRepository始终为空.

I am unit testing a Service which is using the a Unit of Work and Generic Repository using Moq. The problem is that in the service class the _subsiteRepository is always null when I run the test in debug mode.

我正在嘲笑的服务类的设置

The setup of the Service Class I am mocking

private readonly IRepository<Subsite> _subsiteRepository;

public PlatformService(IUnitOfWork<PlatformContext> unitOfWork)
{
    _subsiteRepository = unitOfWork.GetRepository<Subsite>();
}

以及正在测试的此类中的方法.问题在于_subsiteRepository始终为null.该方法的作用还不止于此，但这是相关的部分.

and the method in this class that am testing. The problem is that _subsiteRepository is always null. The method does more than this but this is the relevant part.

public async Task<IEnumerable<Subsite>> GetSubsites()
{
    // Get Subsites
    var subsites = await _subsiteRepository
        .GetAll()
        .ToListAsync();
}

最后这是我正在运行的测试:

Finally this is the test I am running:

private readonly Mock<IRepository<Subsite>> _subsiteRepository;
private readonly Mock<IUnitOfWork<PlatformContext>> _unitOfWork;
private readonly PlatformService _platformService;

_subsiteRepository = new Mock<IRepository<Subsite>>();
_unitOfWork = new Mock<IUnitOfWork<PlatformContext>>();
_platformService = new PlatformService(_unitOfWork.Object);

// Arrange
var fakeSubsites = new List<Subsite>
{
    new Subsite {IDSubsite = new Guid(), Title = "Subsite One"}
}.AsQueryable();

_unitOfWork.Setup(x => x.GetRepository<Subsite>()).Returns(_subsiteRepository.Object);
_unitOfWork.Setup(x => x.GetRepository<Subsite>().GetAll()).Returns(fakeSubsites);

// Act
var subsites = await _platformService.GetSubsites(null, null);

// Assert
Assert.NotNull(subsites);

推荐答案

在排列"步骤之后移动_platformService的创建.因为您在设置unitOfWork模拟之前调用了PlatformService构造函数.

Move creation of the _platformService after Arrange step. Because you call the PlatformService constructor before unitOfWork mock is setup.

_subsiteRepository = new Mock<IRepository<Subsite>>();
_unitOfWork = new Mock<IUnitOfWork<PlatformContext>>();

// Arrange
var fakeSubsites = new List<Subsite>
{
    new Subsite {IDSubsite = new Guid(), Title = "Subsite One"}
}.AsQueryable();

_unitOfWork.Setup(x => x.GetRepository<Subsite>()).Returns(_subsiteRepository.Object);
_unitOfWork.Setup(x => x.GetRepository<Subsite>().GetAll()).Returns(fakeSubsites);

// Act
_platformService = new PlatformService(_unitOfWork.Object);
var subsites = await _platformService.GetSubsites(null, null);

// Assert
Assert.NotNull(subsites);

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