var configMapKeyRegexp = regexp.MustCompile("^" + configMapKeyFmt + "$")

// IsConfigMapKey tests for a string that is a valid key for a ConfigMap or Secret
func IsConfigMapKey(value string) []string {
	var errs []string
	if len(value) > DNS1123SubdomainMaxLength {
		errs = append(errs, MaxLenError(DNS1123SubdomainMaxLength))
	}

		"so_is_this_17",
	}

	for i := range successCases {
		if errs := IsConfigMapKey(successCases[i]); len(errs) != 0 {
			t.Errorf("[%d] expected success: %v", i, errs)
		}
	}

	failureCases := []string{
		".",
		"..",
		"..bad",
		"b*d",
		"bad!&bad",
	}

	for i := range failureCases {
		if errs := IsConfigMapKey(failureCases[i]); len(errs) == 0 {
			t.Errorf("[%d] expected failure", i)
		}

	}
	if len(s.Key) == 0 {
		allErrs = append(allErrs, field.Required(fldPath.Child("key"), ""))
	} else {
		for _, msg := range validation.IsConfigMapKey(s.Key) {
			allErrs = append(allErrs, field.Invalid(fldPath.Child("key"), s.Key, msg))
		}
	}

	return allErrs
}