xUnit测试和.NET Core 2.0中的自动映射

Question

我有.NET Core 2.0项目,其中包含存储库模式和xUnit测试.

现在,这里有一些代码.

控制器:

public class SchedulesController : Controller
{
    private readonly IScheduleRepository repository;
    private readonly IMapper mapper;

    public SchedulesController(IScheduleRepository repository, IMapper mapper)
    {
        this.repository = repository;
        this.mapper = mapper;
    }

    [HttpGet]
    public IActionResult Get()
    {
        var result = mapper.Map<IEnumerable<Schedule>, IEnumerable<ScheduleDto>>(source: repository.items);
        return new OkObjectResult(result);
    }
}

我的测试班:

public class SchedulesControllerTests
{
    [Fact]
    public void CanGet()
    {
        try
        {
            //Arrange
            Mock<IScheduleRepository> mockRepo = new Mock<IScheduleRepository>();
            mockRepo.Setup(m => m.items).Returns(new Schedule[]
            {
                new Schedule() { Id=1, Title = "Schedule1" },
                new Schedule() { Id=2, Title = "Schedule2" },
                new Schedule() { Id=3, Title = "Schedule3" }
            });

            var mockMapper = new Mock<IMapper>();
            mockMapper.Setup(x => x.Map<Schedule>(It.IsAny<ScheduleDto>()))
                .Returns((ScheduleDto source) => new Schedule() { Title = source.Title });

            SchedulesController controller = new SchedulesController(repository: mockRepo.Object, mapper: mockMapper.Object);

            //Act
            var result = controller.Get();

            //Assert
            var okResult = result as OkObjectResult;
            Assert.NotNull(okResult);

            var model = okResult.Value as IEnumerable<ScheduleDto>;
            Assert.NotNull(model);

        }
        catch (Exception ex)
        {
            //Assert
            Assert.False(false, ex.Message);
        }
    }
}

我面临的问题.

我的问题是,当我使用数据库上下文和执行Get()方法运行此代码时,它工作正常,它给了我所有结果.

但是当我尝试运行测试用例时,它没有返回任何Dto对象的数据.当我调试时,我发现了

1. 我正在控制器中使用我的测试对象mockRepo.

2. 但看起来Auto mapper没有正确初始化,因为虽然映射它没有返回任何内容

   var result = mapper.Map<IEnumerable<Schedule>, IEnumerable<ScheduleDto>>(source: repository.items);

我到底尝试了什么？

我遵循了所有这些答案,但仍然无法正常工作.

在单元测试中模拟Mapper.Map()

如何使用AutoMapper模拟列表转换

所以,我需要一些擅长xUnit和automapper的人的帮助,并且需要有关如何正确初始化mock Mapper的指导.

Answer 1

最后它对我有用,我按照这种方式如何编写xUnit Test for .net core 2.0 Service使用AutoMapper和依赖注入？

在这里,我发布我的答案和测试类,所以如果需要其他SO可以使用.

public class SchedulesControllerTests
{
    [Fact]
    public void CanGet()
    {
        try
        {
            //Arrange
            //Repository
            Mock<IScheduleRepository> mockRepo = new Mock<IScheduleRepository>();
            var schedules = new List<Schedule>(){
                new Schedule() { Id=1, Title = "Schedule1" },
                new Schedule() { Id=2, Title = "Schedule2" },
                new Schedule() { Id=3, Title = "Schedule3" }
            };

            mockRepo.Setup(m => m.items).Returns(value: schedules);

            //auto mapper configuration
            var mockMapper = new MapperConfiguration(cfg =>
            {
                cfg.AddProfile(new AutoMapperProfile());
            });
            var mapper = mockMapper.CreateMapper();

            SchedulesController controller = new SchedulesController(repository: mockRepo.Object, mapper: mapper);

            //Act
            var result = controller.Get();

            //Assert
            var okResult = result as OkObjectResult;
            if (okResult != null)
                Assert.NotNull(okResult);

            var model = okResult.Value as IEnumerable<ScheduleDto>;
            if (model.Count() > 0)
            {
                Assert.NotNull(model);

                var expected = model?.FirstOrDefault().Title;
                var actual = schedules?.FirstOrDefault().Title;

                Assert.Equal(expected: expected, actual: actual);
            }
        }
        catch (Exception ex)
        {
            //Assert
            Assert.False(false, ex.Message);
        }
    }
}