public async void Test()
{
var numerOfRequests = 1;
var server = new TestServer(numerOfRequests);
server.Start();
var webRequest = new WebRequest();
var headers = new KeyValuePair <string, string>[] { new KeyValuePair <string, string>("Test-Header", "wow!") };
var rawPayload = System.Text.Encoding.UTF8.GetBytes($"{{ \"count\": {numerOfRequests} }}");
var response = await Task.Factory.FromAsync((callback, state) => webRequest.BeginSend(server.Endpoint, null, headers, rawPayload, callback, state), webRequest.EndSend, null);
Assert.Equal(HttpStatusCode.OK, response.HttpStatusCode);
var requests = await server.Requests();
Assert.Equal(numerOfRequests, requests.Count());
}