class LogLevel {
    List<String> args
    List<String> infoMessages
    List<String> errorMessages
    List<String> allMessages
    Closure validator = {OutputOccurrence occurrence ->
        occurrence.assertIsAtEndOfLine()
        occurrence.assertIsAtStartOfLine()
    }

    def getForbiddenMessages() {
        allMessages - (infoMessages + errorMessages)
    }

    void checkOuts(ExecutionResult result) {