Net Core：从WebApplicationFactory查找服务

Question

如何从 CustomWebApplicationFactory 获取所有服务？Startup类对IDepartmentRepository和IDepartmentAppService进行了依赖注入。想要获取新的 DI 存储库或服务。

我们正在创建指向原始应用程序启动的集成测试。

namespace Integrationtest

{

    public class CustomWebApplicationFactory<TStartup> : WebApplicationFactory<TStartup> where TStartup : class

    {

        protected override void ConfigureWebHost(IWebHostBuilder builder)

        {

            builder.ConfigureAppConfiguration((hostingContext, configurationBuilder) =>

            {

                var type = typeof(TStartup);

                var path = @"C:\\OriginalApplicationWebAPI";

                configurationBuilder.AddJsonFile($"{path}\\appsettings.json", optional: true, reloadOnChange: true);

                configurationBuilder.AddEnvironmentVariables();

            });

        }

    }

}

public class DepartmentAppServiceTest : IClassFixture<CustomWebApplicationFactory<OriginalApplication.Startup>>

{

    public testDbContext context;

    private readonly HttpClient _client;

    public DepartmentAppServiceTest(CustomWebApplicationFactory<OriginalApplication.Startup> factory)

    {

        _client = factory.CreateClient();

        factory.  // trying to find services here for IDepartmentRepository 

    }

https://fullstackmark.com/post/20/painless-integration-testing-with-aspnet-core-web-api

Answer 1

是factory.Host.Services。不要忘记，您需要创建一个范围来访问范围服务，例如您的上下文：using (var scope = _factory.Host.Services.CreateScope()){&nbsp; &nbsp; var foo = scope.ServiceProvider.GetRequiredService<Foo>();&nbsp; &nbsp; // do something}

Answer 2

收到错误：“CustomWebApplicationFactory”不包含“Host”的定义，并且找不到接受“CustomWebApplicationFactory”类型的第一个参数的可访问扩展方法“Host”（您是否缺少 using 指令或程序集引用？）因此，我必须在添加服务器的情况下使用它，如下所示：using&nbsp;(var&nbsp;scope&nbsp;=&nbsp;_factory.Server.Host.Services.CreateScope()) { &nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;do&nbsp;something &nbsp;&nbsp;&nbsp;&nbsp;}