# enum errors on invalid value
$ fecho tpl {{ enum .LEVEL "info" "warn" }}
$ pda set level@tple < tpl
$ pda get level@tple LEVEL=debug --> FAIL
FAIL  cannot get 'level@tple': template: cmd:1:3: executing "cmd" at <enum .LEVEL "info" "warn">: error calling enum: invalid value 'debug', allowed: [info warn]