public void RequestsCorrectUrlWithTimestampsParametrizedWithApiOptions()
            {
                var endpoint = new Uri("user/starred", UriKind.Relative);
                var connection = Substitute.For<IConnection>();
                var gitHubClient = Substitute.For<IGitHubClient>();
                gitHubClient.Connection.Returns(connection);
                var client = new ObservableStarredClient(gitHubClient);

                var options = new ApiOptions
                {
                    PageCount = 1,
                    StartPage = 1,
                    PageSize = 1
                };

                var request = new StarredRequest { SortDirection = SortDirection.Ascending };

                client.GetAllForCurrentWithTimestamps(request, options);

                connection.Received().Get<List<RepositoryStar>>(endpoint, 
                    Arg.Is<IDictionary<string, string>>(d => d.Count == 4 && d["direction"] == "asc" && d["per_page"] == "1" && d["page"] == "1"),
                    "application/vnd.github.v3.star+json");
            }
            public void EnsuresNonNullArguments()
            {
                var client = new ObservableStarredClient(Substitute.For<IGitHubClient>());

                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrent((ApiOptions)null));
                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrent((StarredRequest)null));
                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrentWithTimestamps((ApiOptions)null));
                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrentWithTimestamps((StarredRequest)null));

                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrent(null, new ApiOptions()));
                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrent(new StarredRequest(), null));
                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrentWithTimestamps(null, new ApiOptions()));
                Assert.Throws<ArgumentNullException>(() => client.GetAllForCurrentWithTimestamps(new StarredRequest(), null));
            }
            public void RequestsCorrectUrlWithTimestamps()
            {
                var endpoint = new Uri("user/starred", UriKind.Relative);
                var connection = Substitute.For<IConnection>();
                var gitHubClient = Substitute.For<IGitHubClient>();
                gitHubClient.Connection.Returns(connection);
                var client = new ObservableStarredClient(gitHubClient);

                client.GetAllForCurrentWithTimestamps();

                connection.Received().Get<List<RepositoryStar>>(endpoint, Args.EmptyDictionary, "application/vnd.github.v3.star+json");
            }