DotNet Core控制台应用程序:AutoMapper

问题描述 投票:0回答:2

您好我在DotNet Core Console应用程序中使用AutoMapper

启动文件:

public class StartUp
{
    public  void ConfigureServices(IServiceCollection services) {  
    services.AddAutoMapper();  
}  
}

映射文件:

public class MappingProfile: Profile {  
    public MappingProfile() {  
         CreateMap < Employee, EmployeeModel > ().ForMember(dest => dest.Address, opts => opts.MapFrom(src => new Address {  
            City = src.City, State = src.State   }));  
    }  
}  

UnitTest类:

 public class UnitTest1
    {
         private readonly IMapper _mapper;  
        public UnitTest1(IMapper mapper)
        {
             _mapper = mapper;  
        }

        [Fact]
        public void Test1()
        {  

            Employee  emp = new Employee ();  
            emp.Id=1;
            emp.Name="Test";
           var empmodel = _mapper.Map < Employee, EmployeeModel > (emp);  
           Assert.Equal(empmodel.Name,"Test");
            Assert.Equal(empmodel.Id,1);

        }
    }

参考链接:https://www.c-sharpcorner.com/article/how-to-implement-automapper-in-asp-net-core-mvc-application/

我在运行测试文件时遇到以下错误:错误消息:

以下构造函数参数没有匹配的fixture数据:IMapper mapper

谢谢

c# unit-testing .net-core automapper
2个回答
1
投票

我不太清楚你要做什么,但是如果你在测试项目中使用了者,那么它可能会很有用:

[Fact]
    public void Test1()
    {

        var employee = new Employee
        {
            AddressEmployee = new Address
            {
                City = "SomeCity"
            }
        };

        //initialize automapper and register mapping profile
        var mockMapper = new MapperConfiguration(cfg => cfg.AddProfile(new EmployeeProfile()));

        //create new mapper
        var mapper = mockMapper.CreateMapper();

        //map
        var employeeModel = mapper.Map<EmployeeModel>(employee);

        // do assert or another stuff
    }

顺便说一句,如果类中字段的名称相同,则无需指定从哪里到哪个地图。指定类就足够了。

CreateMap<Employee, EmployeeModel>();

0
投票

因为您的单元测试没有像往常那样启动,所以不会设置或使用依赖注入。因此,当您的单元测试运行时,您会得到一个空引用异常,因为没有人在Imapper中传递。

如果你想使用构造函数我是你想要做的单元测试

public test() {
    _mapper = new Mapping profile();
}

然后你将有一个你想要测试的对象的实例。在单元测试中,我试图避免调用我试图测试的类的抽象,因为我正在测试接口后面的类的实际工作情况

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