package main

import (
	"os"
	"path/filepath"
	"testing"
	"time"
)

func TestNewestKernel(t *testing.T) {
	output := "proxmox-kernel-6.8 6.8.12-5\nproxmox-kernel-6.14 6.14.8-2"
	if got := newestKernel(output); got != "6.14.8-2" {
		t.Fatalf("unexpected newest kernel: %s", got)
	}
}

func TestNextZFSScrubCron(t *testing.T) {
	path := filepath.Join(t.TempDir(), "zfs")
	if err := os.WriteFile(path, []byte("24 0 8-14 * * root /usr/lib/zfs-linux/scrub\n"), 0600); err != nil {
		t.Fatal(err)
	}
	now := time.Date(2026, 8, 1, 12, 0, 0, 0, time.UTC)
	if got := nextZFSScrubCron(path, now); got != "Sun 2026-08-09 00:24 UTC" {
		t.Fatalf("unexpected cron scrub: %s", got)
	}
}

func TestNextScrubTimer(t *testing.T) {
	line := "Sun 2026-08-02 00:24:00 MSK 1 day left zfs-scrub-weekly@tank.timer"
	if got := nextScrubTimer(line); got != "Sun 2026-08-02 00:24:00 MSK" {
		t.Fatalf("unexpected scrub: %s", got)
	}
}