public void EnsuresNonNullArgumentsOrEmpty()
            {
                var githubClient = Substitute.For <IGitHubClient>();
                var client       = new ObservableRepositoryCommentsClient(githubClient);

                Assert.Throws <ArgumentNullException>(() => client.Delete(null, "name", 42));
                Assert.Throws <ArgumentNullException>(() => client.Delete("owner", null, 42));

                Assert.Throws <ArgumentException>(() => client.Delete("", "name", 42));
                Assert.Throws <ArgumentException>(() => client.Delete("owner", "", 42));
            }
            public void DeletesCorrectUrlWithRepositoryId()
            {
                var githubClient = Substitute.For <IGitHubClient>();
                var client       = new ObservableRepositoryCommentsClient(githubClient);

                client.Delete(1, 42);

                githubClient.Repository.Comment.Received().Delete(1, 42);
            }