public async void PostAsync_CalledWithRequest_ReturnsRequestReponse()
        {
            // Given
            var response = new RequestResponse {
                Item = new Request {
                    Subject = "blah blah"
                }
            };
            var request = new RequestRequest {
                Item = new Request {
                    Subject = "blah blah"
                }
            };

            _client.Setup(b => b.PostAsync <RequestResponse>(
                              It.IsAny <Uri>(),
                              request,
                              "application/json",
                              It.IsAny <string>(),
                              It.IsAny <string>()))
            .Returns(TaskHelper.CreateTaskFromResult(response));

            var requestResource = new RequestResource(_client.Object);

            // When
            var result = await requestResource.PostAsync(request);

            // Then
            Assert.That(result, Is.EqualTo(response));
        }
        public async void PostAsync_Called_BuildsUri()
        {
            // Given
            var request = new RequestRequest {
                Item = new Request {
                    Subject = "blah blah"
                }
            };
            var requestResource = new RequestResource(_client.Object);

            // When
            await requestResource.PostAsync(request);

            // Then
            _client.Setup(b => b.BuildUri(It.IsAny <string>(), ""));
        }