us, ok := obj.(runtime.Unstructured)
		if !ok {
			return nil, fmt.Errorf("unexpected error casting a custom resource to unstructured")
		}
		uc := us.UnstructuredContent()

		selectableFieldsSet = fields.Set{}
		for _, sf := range a.selectableFieldSet {
			if sf.err != nil {

		featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, apiextensionsfeatures.CustomResourceFieldSelectors, true)
		t.Run(tc.name, func(t *testing.T) {
			strategy := customResourceStrategy{selectableFieldSet: prepareSelectableFields(tc.selectableFields)}

			_, fields, err := strategy.GetAttrs(tc.obj)
			if err != nil {
				t.Fatal(err)
			}
			if !reflect.DeepEqual(tc.expectFields, fields) {