C＃-对WebApi控制器进行单元测试

Question

I am used to test Web controllers in Java in which a real request is being sent to the controller even under a unit test.

When it comes to C# the doc I am seeing like here or here it seems to check the call workflow to the controller methods but not an entire http message workflow.

In particular, say i have the following controller:

public class SessionController : ApiController
{
    [HttpDelete]
    [ResponseType(typeof(IHttpActionResult))]
    [Route("api/v1/sessions/{session-id}")]
    [ActionName("stop_session")]
    [ValidateModel]
    public IHttpActionResult StopSession([FromUri(Name = "session-id")] Guid sessionId)
    {
        Console.WriteLine($"Stopping session {sessionId}");

        SessionRepository.Instance.Remove(sessionId);

        return Ok();
    }
}

If i create the following unit test:

    [TestMethod]
    public void TestStopSession()
    {
        SessionController controller = new SessionController()
        {
            Request = new HttpRequestMessage
            {
                Method = HttpMethod.Get,
                RequestUri = new Uri("http://localhost:9000/api/v1/zada")
            }
        };
        controller.Configuration = new HttpConfiguration();

        var res = controller.StopSession(new Guid());

        Assert.IsInstanceOfType(res, typeof(OkResult));
    }

As you can see, in test I am putting a different URL and even a different method and still the unit test passes successfully.

What is the way to unit test the entire HTTP workflow?

Answer 1

I this case your are testing the unit TestStopSession from the SessionController , and not any routing, validation etc. I think that's OK for an unit test, as you need to test one unit at once.

You're calling the method TestStopSession, so there isn't even a routing take place here.

What is the way to unit test the entire HTTP workflow?

You need an integration or system test then. You could spin up a HTTP listener and then do the raw request.

But keep in mind, don't write to many integration / system tests. Be sure to know the test pyramid