public void MockAuthentication_ShouldUseMock()
        {
            string expected = "Hello from mock";

            _client.Setup(c => c.Execute(It.IsAny <IRestRequest>()))
            .Returns(new RestResponse()
            {
                ResponseStatus = ResponseStatus.Completed,
                StatusCode     = System.Net.HttpStatusCode.OK,
                Content        = expected,
            });

            var client = new SharpBucketV2();

            client.MockAuthentication(_client.Object);
            var output = client.Get(null);

            output.ShouldBe(expected);
        }