public void EnsuresNonNullArguments()
            {
                var gitHubClient = Substitute.For<IGitHubClient>();
                var client = new ObservableIssueReactionsClient(gitHubClient);

                Assert.Throws<ArgumentNullException>(() => client.GetAll(null, "name", 1));
                Assert.Throws<ArgumentNullException>(() => client.GetAll("owner", null, 1));

                Assert.Throws<ArgumentException>(() => client.GetAll("", "name", 1));
                Assert.Throws<ArgumentException>(() => client.GetAll("owner", "", 1));
            }
            public void RequestsCorrectUrlWithRepositoryId()
            {
                var gitHubClient = Substitute.For<IGitHubClient>();
                var client = new ObservableIssueReactionsClient(gitHubClient);

                client.GetAll(1, 42);
                gitHubClient.Received().Reaction.Issue.GetAll(1, 42);
            }
            public void RequestsCorrectUrl()
            {
                var gitHubClient = Substitute.For<IGitHubClient>();
                var client = new ObservableIssueReactionsClient(gitHubClient);

                client.GetAll("fake", "repo", 42);
                gitHubClient.Received().Reaction.Issue.GetAll("fake", "repo", 42);
            }