public async Task ApprovePullRequest_ShouldReturnValidParticipant()
        {
            var responseJson = Utilities.LoadFile(Paths.GetStandardDataPath("ApprovePullRequestResponse.json"));
            var responseData = new NewtonsoftJsonSerializer().Deserialize <Participant>(responseJson);

            var response = MockRepository.GenerateMock <IRestResponse <Participant> >();

            response.Stub(x => x.Data).Return(responseData);

            var result = _restClient
                         .Capture()
                         .Args <IRestRequest, IRestResponse <Participant> >((s, req) => s.ExecuteTaskAsync <Participant>(req), response);

            var participant = await _sut.ApprovePullRequest("repoName", "owner", 1);

            Assert.AreEqual(1, result.CallCount);

            var args = result.Args[0];

            Assert.Multiple(() =>
            {
                Assert.AreEqual("repositories/owner/repoName/pullrequests/1/approve", args.Resource);
                Assert.AreEqual(Method.POST, args.Method);

                Assert.AreEqual(true, participant.Approved);
                Assert.AreEqual("PARTICIPANT", participant.Role);
                Assert.AreEqual("mistyku", participant.User.UserName);
                Assert.AreEqual("Zibi", participant.User.DisplayName);
            });
        }