if got := tt.r.DependentConfigs(); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("DependentConfigs got %v, want %v", got, tt.want)
			}
		})
	}
}

func TestExtractNamespaceForKubernetesService(t *testing.T) {
	tests := []struct {
		hostname string
		want     string
	}{
		{
			"foo.ns.svc.cluster.local",
			"ns",
		},
		{
			"foo.svc.cluster.local",
			"",