System.Net.Http.WinHttpHandlerUnitTests.WinHttpHandlerTest.SendAsync_SlowGetRequestWithTimedCancellation_ExpectTaskCanceledException C# (CSharp) Method

        public async Task SendAsync_SlowGetRequestWithTimedCancellation_ExpectTaskCanceledException()
        {
            var handler = new WinHttpHandler();
            TestControl.WinHttpReceiveResponse.Delay = 5000;
            CancellationTokenSource cts = new CancellationTokenSource(50);
            using (var client = new HttpClient(handler))
            {
                var request = new HttpRequestMessage(HttpMethod.Get, TestServer.FakeServerEndpoint);

                await Assert.ThrowsAsync<TaskCanceledException>(() =>
                    client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cts.Token));
            }
        }