Question

这是我的问题：InvalidOperationException: Unable to resolve service for type 'WebApi.Test.Repository.TestRepository' while attempting to activate 'WebApi.Test.Services.TestService'.

当然，问题是，当服务需要时，我似乎无法构造TestRepository。

这是回购：

public class TestRepository : GenericRepository<TestEntity>
{
    public TestRepository(TestContext dbContext
        , ILoggerFactory loggerFactory) : base(dbContext, loggerFactory)
    {
    }
}

该服务的构造函数中基本上有一个 TestRepository 作为参数（但问题似乎在此之前）。

这是我的自定义 WebApplicationFactory

public class ApiWebApplicationFactory : WebApplicationFactory<Startup>
    {
        public IConfiguration Configuration { get; private set; }

        protected override void ConfigureWebHost(IWebHostBuilder builder)
        {
            builder.ConfigureAppConfiguration(config =>
            {
                Configuration = new ConfigurationBuilder()
                    .AddJsonFile("appsettings.json")
                    .Build();

                config.AddConfiguration(Configuration);
            });


            //Add Services
            builder.ConfigureTestServices(services =>
            {
                // Add framework services.
                services.AddMvc();

                //Add ApplicationDbContext using an in-memory database for testing.
                services.AddDbContext<TestContext>(options =>
                    options.UseInMemoryDatabase("InMemoryDbForTesting"));

                services.AddAutoMapper(typeof(Startup));

                // Build the service provider.
                var serviceProvider = services.BuildServiceProvider();

                // Create a scope to obtain a reference to the database
                // context (ApplicationDbContext).
                using var scope = serviceProvider.CreateScope();

                var db = scope.ServiceProvider.GetRequiredService<TestContext>();

                // Ensure the database is created.
                db.Database.EnsureCreated();

                // Seed the database with test data.
                InitializeTestDatabase(db);

                
                services.AddScoped<GenericRepository<TestEntity>, TestRepository>();
                services.AddScoped<GenericService<TestEntity, TestRequest, TestResponse>, TestService>();
                services.AddScoped<GenericController<TestEntity, TestRequest, TestResponse>, TestController>();
            });
        }

        private void InitializeTestDatabase(TestContext textContext)
        {
            textContext.TestEntities.Add(new TestEntity { Id = 1 });
        }
    }

所有的泛型类都是抽象类。这是GenericRepository：

public abstract class GenericRepository<T> : IGenericRepository<T>
        where T : BaseEntity
    {
        protected DbContext _context;
        private DbSet<T> _table;
        private ILogger _logger;

        public GenericRepository(DbContext context
            , ILoggerFactory loggerFactory)
        {
            _context = context;
            _table = context.Set<T>();
            _logger = loggerFactory.CreateLogger<GenericRepository<T>>();
        } 

         //CRUD Methods
    }

我在想是不是因为我没有在我的自定义 WebAppFactory 上创建 ILoggerFactory，如果是这样，有人怎么能创建 ILoggerFactory？。

我尝试过的：我尝试添加以下行：

services.AddScoped<DbContext, TestContext>();

但我一直收到同样的错误。

这是服务：

public abstract class GenericService<T, Request, Response>
    where T : BaseEntity
    where Response : class, IResponseDto
    where Request : class, IRequestDto
{
    protected readonly GenericRepository<T> _genericRepository;
    protected readonly IMapper _mapper;
    protected readonly ILogger _logger;
    public GenericService(GenericRepository<T> genericRepository
        , IMapper mapper
        , ILoggerFactory loggerFactory)
    {
        _genericRepository = genericRepository;
        _mapper = mapper;
        _logger = loggerFactory.CreateLogger<GenericService<T, Request, Response>>();
    }

    //Methods
}

无法使用 WebApplicationFactory 解析集成测试中的类型

0 个答案: