{"TrimPrefix", []byte{}, "", []byte{}},
	{"TrimPrefix", []byte{'a'}, "a", []byte{}},
	{"TrimPrefix", []byte("☺"), "☺", []byte{}},
	{"TrimSuffix", nil, "", nil},
	{"TrimSuffix", []byte{}, "", []byte{}},
	{"TrimSuffix", []byte{'a'}, "a", []byte{}},
	{"TrimSuffix", []byte("☺"), "☺", []byte{}},
}

func TestTrim(t *testing.T) {
	toFn := func(name string) (func([]byte, string) []byte, func([]byte, []byte) []byte) {

		policyMapFile := strings.TrimPrefix(event.keyPath, iamConfigPolicyDBUsersPrefix)
		user := strings.TrimSuffix(policyMapFile, ".json")
		err = sys.store.PolicyMappingNotificationHandler(ctx, user, false, regUser)
	case policyDBSTSUsersPrefix:
		policyMapFile := strings.TrimPrefix(event.keyPath, iamConfigPolicyDBSTSUsersPrefix)
		user := strings.TrimSuffix(policyMapFile, ".json")
		err = sys.store.PolicyMappingNotificationHandler(ctx, user, false, stsUser)

				}
				groupSet.Add(group)
			}
		}

		groupPolicyMappingsList := listedConfigItems[policyDBGroupsListKey]
		for _, item := range groupPolicyMappingsList {
			group := strings.TrimSuffix(item, ".json")
			if err = iamOS.loadMappedPolicy(ctx, group, regUser, true, cache.iamGroupPolicyMap); err != nil && !errors.Is(err, errNoSuchPolicy) {