compiler/testData/cli/jvm/whenGuards.kt

enum class Problem {
    CONNECTION, AUTHENTICATION, UNKNOWN
}

sealed interface Status {
    data object Loading: Status
    data class Error(val problem: Problem, val isCritical: Boolean): Status
    data class Ok(val info: List<String>): Status
}

fun render(status: Status): String = when (status) {
    Status.Loading -> "loading"
    is Status.Ok if status.info.isEmpty() -> "no data"
    is Status.Ok -> status.info.joinToString()
    is Status.Error if status.problem == Problem.CONNECTION -> "problems with connection"
    is Status.Error if status.problem == Problem.AUTHENTICATION -> "could not be authenticated"
    else -> "unknown problem"
}