HttpClient 默认 headers 不适用于 Microsoft.Owin.Testing.TestServer

Question

我正在使用 Microsoft.Owin.Testing 库来集成测试我的 API in-memory。我已经在 OWIN JWT 中间件中添加了我的身份验证需求，现在正尝试将生成的令牌传递给需要授权的控制器以测试请求。我可以向您保证 JWT 中间件设置正确，因为它在正常使用时工作正常。但是，我观察到 TestServer.HttpClient object 有一些奇怪的行为。当我在 HttpClient 上设置默认授权 header 以传递令牌时，我的测试从未通过，因为无法识别令牌。但是，当我使用 TestServer.CreateRequest(...) 时，测试正确通过并且令牌被识别。我更愿意使用 HttpClient 方法，因为它们通过提供的所有扩展方法（例如 PostAsJsonAsync 等）使事情变得容易得多。我开始认为 [=15] 中存在错误=] 或者我完全遗漏了一些东西。

这是我的测试 class（使用 NUnit3）：

public class DefinitionsControllerTests
{
    private TestServer _server;
    private string _accessToken;

    [SetUp]
    public void Setup()
    {
        _server = TestServer.Create<Startup>();

        var credentials = new FormUrlEncodedContent(new[] {
            new KeyValuePair<string, string>("grant_type", "password"),
            new KeyValuePair<string, string>("username", "john.doe@mail.com"),
            new KeyValuePair<string, string>("password", "testing123")
        });

        // get token from OWIN JWT middleware
        dynamic resultBody = JObject.Parse(
            _server.HttpClient.PostAsync("/oauth/token", credentials).Result.Content.ReadAsStringAsync().Result);

        _accessToken = (string)resultBody.access_token;

        // this does not appear to ever work
        _server.HttpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", _accessToken);
    }

    [TearDown]
    public void TearDown()
    {
        _server.Dispose();
    }

    [Test]
    public void GetById_WithExistingId()
    {
        // 401 Unauthorized response everytime and test fails
        var response = _server.HttpClient.GetAsync($"/api/definitions/{expected.Id}").Result;
        var actual = response.Content.ReadAsAsync<Definition>().Result;

        // 200 Ok every time and test passes
        // - these variables aren't part of the test but rather to show alternate request creation method that works
        var response2 = _server.CreateRequest($"/api/definitions/{expected.Id}")
            .AddHeader("Authorization", "Bearer " + _accessToken)
            .GetAsync()
            .Result;
        var actual2 = response.Content.ReadAsAsync<Definition>().Result;

        response.StatusCode.ShouldBe(HttpStatusCode.OK);
        actual.ShouldNotBeNull();
    }

    //...other test methods
}

还有我的控制器：

[Authorize]
public class DefinitionsController : ApiController
{
    private readonly IDefinitionRepository _repo;

    public DefinitionsController(IDefinitionRepository repo)
    {
        _repo = repo;
    }

    public IHttpActionResult Get(Guid id)
    {
        var definition = _repo.Get(id);

        if (definition == null)
            return NotFound();

        return Ok(definition);
    }
}

有人知道为什么只有 CreateRequest() 有效吗？这有点令人气愤。

Answer 1

问题是 HttpClient 属性 returns 每次都是一个新实例。如果您保存该实例并重新使用它，它将起作用。 https://github.com/aspnet/AspNetKatana/blob/b850cd8b4de61e65bbd7127ce02b5df7c4cb6db5/src/Microsoft.Owin.Testing/TestServer.cs#L48

HttpClient 默认 headers 不适用于 Microsoft.Owin.Testing.TestServer

HttpClient default headers not working with Microsoft.Owin.Testing.TestServer

integration-testing

owin

katana

asp.net-web-api2