res[f.GetName()] = cfg.GetValue()
					}
				}
			}
			if diff := cmp.Diff(res, tt.want); diff != "" {
				t.Errorf("got diff: %v", diff)
			}
		})
	}
}

func TestGetInterval(t *testing.T) {
	cases := []struct {
		name              string
		input, defaultVal time.Duration
		expected          *durationpb.Duration
	}{
		{
			name:       "return nil",
			input:      0,