added := lister.Add(addition).Value()
			if !reflect.DeepEqual(added, tc.expectAdded) {
				t.Errorf("Expected Add to return %v but got %v", tc.expectAdded, added)
			}
		})
	}
}

func TestMapper(t *testing.T) {
	cases := []struct {
		name           string
		unstructured   map[string]interface{}
		schema         *schema.Structural
		propertySchema func(key string) (*schema.Structural, bool)