public void PostsToCorrectUrlWithRepositoryId()
            {
                var newComment = new NewCommitComment("body");

                var githubClient = Substitute.For<IGitHubClient>();
                var client = new ObservableRepositoryCommentsClient(githubClient);

                client.Create(1, "sha", newComment);

                githubClient.Repository.Comment.Received().Create(1, "sha", newComment);
            }