[英]Automapper in xUnit testing and .NET Core 2.0
I have .NET Core 2.0 Project which contains Repository pattern and xUnit testing. 我有.NET Core 2.0项目,其中包含存储库模式和xUnit测试。
Now, here is some of it's code. 现在,这里有一些代码。
Controller: 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);
}
}
My Test Class: 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);
}
}
}
Issue I Am facing. 我面临的问题。
My Issue is that when I run this code with database context and execute Get()
method, it works fine, it gives me all results. 我的问题是,当我使用数据库上下文运行此代码并执行
Get()
方法时,它工作正常,它给了我所有结果。
But when I tries to run test case, it's not returning any data of Dto object. 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。 When I debugged I found that
当我调试时,我发现了
I am getting my test object in controller using mockRepo
. 我使用
mockRepo
在控制器中获取我的测试对象。
But it looks like Auto mapper is not initialized correctly, because while mapping it's not returning anything in 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);
What I tried So Far? 我到底尝试了什么?
I followed all this answers but still it's not working. 我遵循了所有这些答案,但仍然无法正常工作。
Mocking Mapper.Map() in Unit Testing 在单元测试中模拟Mapper.Map()
How to Mock a list transformation using AutoMapper 如何使用AutoMapper模拟列表转换
So, I need help from someone who is good in xUnit and automapper, and need guidance on how to initialize mock Mapper correctly. 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。
Finally it worked for me, I followed this way How to Write xUnit Test for .net core 2.0 Service that uses AutoMapper and Dependency Injection? 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?
Here I am posting my answer and Test Class so if needed other SO's can use. 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);
}
}
}
I needed to inject IMapper
, use ProjectTo
to get a mapped IQueryable
, then implement some more logic on the queryable after the map. 我需要注入
IMapper
,使用ProjectTo
获取映射的IQueryable
,然后在map之后在queryable上实现更多逻辑。 So here's what I did to mock it: 所以这就是我做的嘲笑:
var models = new object[]
{
⋮
}.AsQueryable();
var mapper = new Mock<IMapper>();
mapper.Setup(x => x.ProjectTo(
It.IsAny<IQueryable>(),
It.IsAny<object>(),
It.IsAny<Expression<Func<object, object>>[]>()))
.Returns(models);
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