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POWebAPI in memory testing - getting error serialize IQueryable
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copied!<p>I have WebAPI implementation with method like this:</p> <pre><code> public IEnumerable<Device> GetAllDevices() public Device GetDeviceById(int id) </code></pre> <p>Looks ok, it works when running in IIS or selfhosted. Returns JSON objects correctly.</p> <p>However first method fails in my unit test where I attempt to use inmemory server.</p> <pre><code> System.InvalidOperationException : Cannot create and populate list type System.Linq.IQueryable`1[Test.Device]. </code></pre> <p>This goes down to Newtonsoft.Json.Serialization assembly. An example of the test follow:</p> <pre><code> [Test] public void GET_AskingForListOfDevices_GettingOk200WithListOfDevicesInJSON() { var client = new HttpClient(InMemoryServer); HttpRequestMessage request = CreateRequest("api/devices", "application/json", HttpMethod.Get); using (HttpResponseMessage response = client.SendAsync(request).Result) { Assert.That(response.StatusCode, Is.EqualTo(HttpStatusCode.OK)); Assert.NotNull(response.Content); Assert.AreEqual("application/json", response.Content.Headers.ContentType.MediaType); // next line throws exc var content = response.Content.ReadAsAsync<IQueryable<Device>>().Result; Assert.AreEqual(3, content.Count()); } request.Dispose(); } </code></pre> <p>Any idea where to look?</p> <p>UPDATE<br> The example below throws that error, however I found the solution to avoid it. Just by using IList<> instead of IQueryable<>. Still It does not answer me the question why it's working in Fiddler. Does it use the same trick?</p>

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