使用Moq進行單元測試的工作單元和通用存儲庫模式框架

Question

我正在對使用Moq的工作單元和通用存儲庫的服務進行單元測試。 問題是，當我在調試模式下運行測試時，在服務類中，_subsiteRepository始終為null。

我正在嘲笑的服務類的設置

private readonly IRepository<Subsite> _subsiteRepository;

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

以及正在測試的此類中的方法。 問題在於_subsiteRepository始終為null。 該方法的作用還不止於此，但這是相關的部分。

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

最后，這是我正在運行的測試：

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);

Answer 1

在“排列”步驟之后移動_platformService創建。 因為您在設置unitOfWork模擬之前調用了PlatformService構造函數。

_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);