TestServer CreateClient和HttpClientHandler - howto？

Question

我正在使用AspNetCore TestServer並嘗試連接到為NTLM身份驗證配置的API服務。 我要連接的服務需要訪問System.Security.Claims.ClaimsPrincipal.Identity。

從我的控制台應用程序，我可以如下初始化他的HTTPClient，它的工作原理

HttpClientHandler handler = new HttpClientHandler()
{
    UseDefaultCredentials = true,
    PreAuthenticate = true
};

HttpClient client = new HttpClient(handler);

但是，TestServer CreateClient方法不接受HttpClientHandler。 那么如何配置使用UseDefaultCredentials？

Answer 1

一個選項是在HttpClientHandler上創建一個重載的構造函數並包裝TestServer的HttpClientHandler。 在那里，從SendAsync方法你只需要調用他的TestServer的HttpClientHandler的方法SendAsync，就像這樣

if (_wrappedMessageHandler != null)
{
    var method = typeof(HttpMessageHandler).GetMethod("SendAsync", BindingFlags.Instance | BindingFlags.NonPublic);
    var result = method.Invoke(_wrappedMessageHandler, new object[] { request, cancellationToken });
    return await (Task<HttpResponseMessage>)result;
}
else
{
    var response = await base.SendAsync(request, cancellationToken);
    return response;

}

Answer 2

您無法使用測試服務器執行Windows身份驗證。 為即將發布的版本添加了相關功能。 https://github.com/aspnet/Hosting/pull/1248 。 通過中間件查看鏈接的問題和PR以獲取變通方法。

Answer 3

為了解決這個問題，我在測試中注入了一個中間件用戶：

public class FakeIdentity : IIdentity
{
    public string AuthenticationType => "fake";

    public bool IsAuthenticated => true;

    public string Name => "fake";
}

public class TestUtils
{
    public static TestServer CreateTestServer()
    {
        Startup startup = null;
        var webHostBuilder = new WebHostBuilder()
            .ConfigureServices((context, services) =>
            {
                startup = new Startup(context.Configuration);
                startup.ConfigureServices(services);
            })
            .Configure(builder =>
            {
            var services = builder.ApplicationServices;
            using (var scope = services.CreateScope())
            {
                builder.Use(async (context, next) =>
                {
                    context.User = new ClaimsPrincipal(new ClaimsIdentity(new FakeIdentity(), new List<Claim>
                    {
                                // a list of claims the application need
                            }));
                    await next();
                });
                startup.Configure(builder, services.GetRequiredService<IHostingEnvironment>());
            });

        var testServer = new TestServer(webHostBuilder);

        return testServer;
    }
}