private async Task PostNotificationHelper(InboxController controller, Stream inputStream = null, int lifetimeInMinutes = 10) { SetupNextRequest(controller, "POST", inputStream); var result = await controller.PostNotificationAsync(this.inboxId, lifetimeInMinutes); Assert.IsType(typeof(HttpStatusCodeResult), result); var actualStatus = (HttpStatusCode)((HttpStatusCodeResult)result).StatusCode; Assert.Equal(HttpStatusCode.Created, actualStatus); }