type UnixSecondSerializer struct{}

// Scan implements serializer interface
func (UnixSecondSerializer) Scan(ctx context.Context, field *Field, dst reflect.Value, dbValue interface{}) (err error) {
	t := sql.NullTime{}
	if err = t.Scan(dbValue); err == nil && t.Valid {
		err = field.Set(ctx, dst, t.Time.Unix())
	}

	return
}

// Value implements serializer interface

			if out := Contains(test.elems, test.elem); test.out != out {
				t.Errorf("Contains(%v, %s) want: %t, got: %t", test.elems, test.elem, test.out, out)
			}
		})
	}
}

type ModifyAt sql.NullTime

// Value return a Unix time.
func (n ModifyAt) Value() (driver.Value, error) {
	if !n.Valid {
		return nil, nil
	}
	return n.Time.Unix(), nil
}

func TestAssertEqual(t *testing.T) {

		t.Errorf("got error when pluck time: %v", err)
	}

	for idx, tv := range ptrtimes {
		AssertEqual(t, tv, users[idx].CreatedAt)
	}

	var nulltimes []sql.NullTime
	if err := DB.Model(User{}).Where("name like ?", "pluck-user%").Pluck("created_at", &nulltimes).Error; err != nil {
		t.Errorf("got error when pluck time: %v", err)
	}

	for idx, tv := range nulltimes {