public void EnsuresNonNullOrEmptyArguments()
            {
                var connection = Substitute.For <IApiConnection>();
                var client     = new TeamsClient(connection);

                Assert.ThrowsAsync <ArgumentException>(() => client.AddRepository(1, "org name", null));

                // Check owner arguments.
                Assert.ThrowsAsync <ArgumentNullException>(() => client.IsRepositoryManagedByTeam(1, null, "repoName"));
                Assert.ThrowsAsync <ArgumentException>(() => client.IsRepositoryManagedByTeam(1, "", "repoName"));

                // Check repo arguments.
                Assert.ThrowsAsync <ArgumentNullException>(() => client.IsRepositoryManagedByTeam(1, "ownerName", null));
                Assert.ThrowsAsync <ArgumentException>(() => client.IsRepositoryManagedByTeam(1, "ownerName", ""));
            }
            public void EnsuresNonNullOrEmptyArguments()
            {
                var connection = Substitute.For<IApiConnection>();
                var client = new TeamsClient(connection);

                Assert.ThrowsAsync<ArgumentException>(() => client.AddRepository(1, "org name", null));

                // Check owner arguments.
                Assert.ThrowsAsync<ArgumentNullException>(() => client.IsRepositoryManagedByTeam(1, null, "repoName"));
                Assert.ThrowsAsync<ArgumentException>(() => client.IsRepositoryManagedByTeam(1, "", "repoName"));

                // Check repo arguments.
                Assert.ThrowsAsync<ArgumentNullException>(() => client.IsRepositoryManagedByTeam(1, "ownerName", null));
                Assert.ThrowsAsync<ArgumentException>(() => client.IsRepositoryManagedByTeam(1, "ownerName", ""));
            }