Question

我正在尝试嘲笑UnitOfWork但是我需要一些帮助，因为我无法正确地实现我的结果

所以我有以下BooksController： -

attempt to call a nil value (global 'loadstring')

以下BooksRepository： -

public class BooksController : BaseController
{
    private IUnitOfWork UnitOfWork;

    public BooksController()
    {
        UnitOfWork = new UnitOfWork();
    }

    public BooksController(IUnitOfWork unitOfWork)
    {
        UnitOfWork = unitOfWork;
    }

    // GET: api/Books
    public IQueryable<BookDTO> GetBooks()
    {
        return UnitOfWork.BookRepository.GetBooks("").ProjectTo<BookDTO>();
    }
    ...................

UnitOfWork： -

public class BooksRepository : IBooksRepository
{
    internal BookContext Context = new BookContext();
    internal DbSet<Book> dbSet;

    public BooksRepository(BookContext context)
    {
        Context = context;
        dbSet = context.Set<Book>();
    }

    public virtual IQueryable<Book> GetBooks(string includeProperties = "")
    {

        IQueryable<Book> query = dbSet;

        foreach (var includeProperty in includeProperties.Split
            (new[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
        {
            query = query.Include(includeProperty);
        }

        return query;
    }
    ...........................

Global.asax中的

我有： -

public class UnitOfWork : IDisposable, IUnitOfWork
{
    private readonly BookContext _context = new BookContext();
    private IBooksRepository _booksRepository;

    public IBooksRepository BookRepository
    {
        get
        {
            if (_booksRepository == null)
            {
                _booksRepository = new BooksRepository(_context);
            }
            return _booksRepository;
        }

    }
    .........................

AutoMapperConfig如下： -

AutoMapperConfig.RegisterMappings();

和BookMappings： -

public static class AutoMapperConfig
{
    public static void RegisterMappings()
    {
        Mapper.Initialize(x =>
        {
            x.AddProfile<BookMappings>();
        });
    }
}

最后我希望运行的测试： -

public class BookMappings : Profile
{
    public override string ProfileName => "BookMappings";

    protected override void Configure()
    {
        CreateMap<Book, BookDTO>();
        CreateMap<Book, BookDTO>()
            .ForMember(dest => dest.BookTitle,
                opts => opts.MapFrom(src => src.Title));
        CreateMap<Book, BookDTO>()
            .ForMember(dest => dest.AuthorName,
                opts => opts.MapFrom(src => src.Author.Name));

        CreateMap<Book, BookDetailDTO>();
        CreateMap<Book, BookDetailDTO>()
            .ForMember(dest => dest.BookTitle,
                opts => opts.MapFrom(src => src.Title));
        CreateMap<Book, BookDetailDTO>()
            .ForMember(dest => dest.AuthorName,
                opts => opts.MapFrom(src => src.Author.Name));
        CreateMap<Book, BookDetailDTO>()
            .ForMember(dest => dest.GenreType,
                opts => opts.MapFrom(src => src.Genre.Type));
    }
}

我希望将我在测试中创建的模拟列表传递给BooksController，并验证我得到了3个结果，但是我没有设法做到这一点。

目前，Get_Post_Should_Get_All_Books（）的行为失败了它似乎找不到Automapper并给出以下错误： -

System.NullReferenceException：未将对象引用设置为对象的实例。

在lambda_method（Closure，Book） at System.Linq.Enumerable.WhereSelectListIterator [TestFixture] public class BooksControllerTests { private Mock<IUnitOfWork> _unitOfWorkMock; private Mock<IBooksRepository> _booksRepositoryMock; BooksController objController; List<Book> books = new List<Book>(); [SetUp] public void Setup() { _unitOfWorkMock = new Mock<IUnitOfWork>(); _booksRepositoryMock = new Mock<IBooksRepository>(); _unitOfWorkMock.Setup(x => x.BookRepository) .Returns(_booksRepositoryMock.Object); objController = new BooksController(_unitOfWorkMock.Object); AutoMapperConfig.RegisterMappings(); books = new List<Book>() { new Book {Id = 1, Title = "Hamlet", ISBN = 1853260096, AuthorId = 1, GenreId = 1, IsAvailable = true, Summary = "Hamlet is not only one of Shakespeare's greatest plays, but also the most fascinatingly problematical tragedy. "}, new Book {Id = 2, Title = "Macbeth", ISBN = 1853260355, AuthorId = 1, GenreId = 1, IsAvailable = true, Summary = "Shakespeare’s Macbeth is one of the greatest tragic dramas the world has known. "}, new Book {Id = 3, Title = "Romeo And Juliet", ISBN = 1840224339, AuthorId = 1, GenreId = 2, IsAvailable = true, Summary = "Romeo and Juliet is the world's most famous drama of tragic young love. "} }; } [Test] public void Get_Post_Should_Get_All_Books() { // Arrange _booksRepositoryMock.Setup(x => x.GetBooks("")) .Returns(books.AsQueryable()); // Act var result = objController.GetBooks().ToList(); // Assert Assert.AreEqual(result.Count, 3); } } 1..ctor（IEnumerable 2.MoveNext() at System.Collections.Generic.List 1 source）

非常感谢任何帮助。谢谢！

Answer 1

您忘记配置虚假UoW（_unitOfWorkMock）以返回存储库。

将以下行添加到您的排列或设置方法中：

 _unitOfWorkMock.Setup(x => x.BookRepository)
                .Returns(_booksRepositoryMock.Object);

Answer 2

在阅读了一些不建议自动映射特别是TDD的帖子之后，我决定完全删除Automapper。

AutoMapper Mocking UnitOfWork失败

2 个答案: