用.NET6测试AutoMapper最小API

Question

我有一个带有最小API的.NET6项目。这是密码

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddDbContext<ClientContext>(opt => 
  opt.UseInMemoryDatabase("Clients"));
builder.Services
  .AddTransient<IClientRepository,
                ClientRepository>();
builder.Services
  .AddAutoMapper(Assembly.GetEntryAssembly());

var app = builder.Build();

// Get the Automapper, we can share this too
var mapper = app.Services.GetService<IMapper>();
if (mapper == null)
{
    throw new InvalidOperationException(
      "Mapper not found");
}

app.MapPost("/clients",
  async (ClientModel model,
         IClientRepository repo) =>
  {
      try
      {
          var newClient = mapper.Map<Client>(model);
          repo.Add(newClient);
          if (await repo.SaveAll())
          {
              return Results.Created(
                $"/clients/{newClient.Id}",
                mapper.Map<ClientModel>(newClient));
          }
      }
      catch (Exception ex)
      {
          logger.LogError(
            "Failed while creating client: {ex}",
            ex);
      }
      return Results.BadRequest(
        "Failed to create client");
  });

这个代码起作用了。我有一个简单的Profile用于AutoMapper

public class ClientMappingProfile : Profile
{
    public ClientMappingProfile()
    {
        CreateMap<Client, ClientModel>()
          .ForMember(c => c.Address1, o => o.MapFrom(m => m.Address.Address1))
          .ForMember(c => c.Address2, o => o.MapFrom(m => m.Address.Address2))
          .ForMember(c => c.Address3, o => o.MapFrom(m => m.Address.Address3))
          .ForMember(c => c.CityTown, o => o.MapFrom(m => m.Address.CityTown))
          .ForMember(c => c.PostalCode, o => o.MapFrom(m => m.Address.PostalCode))
          .ForMember(c => c.Country, o => o.MapFrom(m => m.Address.Country))
          .ReverseMap();
    }
}

我编写了一个NUnit测试和一个xUnit测试。在这两种情况下，当我调用API时都会收到错误。

程序:错误:在创建客户端时失败: AutoMapper.AutoMapperMappingException:缺少类型映射配置或不支持的映射。 映射类型: ClientModel -> Client MinimalApis.Models.ClientModel -> MinimalApis.Data.Entities.Client at lambda_method92(闭包、对象、客户端、ResolutionContext )

如何在主项目中使用概要文件？完整的源代码在GitHub上。

Answer 1

可以使用以下代码使用特定的配置文件类实例化AutoMapper：

var configuration = new MapperConfiguration(cfg => cfg.AddProfile(ClientMappingProfile));
var mapper = new Mapper(configuration);

若要使用依赖项注入完成此操作，请执行以下操作：

services.AddAutoMapper(config =>
{
    config.AddProfile(ClientMappingProfile);
});