如何在需要 DI 的 DNX 中测试自定义中间件？

Question

我正在编写一些自定义中间件以在 ASP.NET 应用程序中使用。我的中间件依赖于一些服务，我可以使用 AddServices.

方法将这些服务注入到 Microsoft DI 容器中

但是，当使用 xUnit 并创建 TestServer 时，我没有地方调用 Microsoft DI 容器来注入我的中间件所依赖的服务。

有关我如何创建 TestServer 并在其上添加我的中间件的信息，请参见下面的示例：

/// <summary>
///     Create a server with the ASP.NET Core Logging Middleware registered without any configuration.
///     The server will throw an exception of type <typeparamref name="T"/> on every request.
/// </summary>
/// <typeparam name="T">The type of exception to throw.</typeparam>
/// <returns>A <see cref="TestServer"/> that can be used to unit test the middleware.</returns>
private TestServer CreateServerWithAspNetCoreLogging<T>()
    where T : Exception, new()
{
    return TestServer.Create(app =>
    {
        app.UseAspNetCoreLogging();

        SetupTestServerToThrowOnEveryRequest<T>(app);
    });
}

应该在哪里以及如何将我的服务注入 Microsoft DI 容器？

Answer 1

好像比较容易搞定：

/// <summary>
///     Create a server with the ASP.NET Core Logging Middleware registered without any configuration.
///     The server will throw an exception of type <typeparamref name="T"/> on every request.
/// </summary>
/// <typeparam name="T">The type of exception to throw.</typeparam>
/// <returns>A <see cref="TestServer"/> that can be used to unit test the middleware.</returns>
private TestServer CreateServerWithAspNetCoreLogging<T>()
    where T : Exception, new()
{
    return TestServer.Create(null, app =>
    {
        app.UseAspNetCoreLogging<string>();

        SetupTestServerToThrowOnEveryRequest<T>(app);
    }, services =>
    {
        services.AddAspNetCoreLogging();
    });
}

如何在需要 DI 的 DNX 中测试自定义中间件？

How to test custom middleware in DNX that required DI?

asp.net

dependency-injection

dnx