Expand guest metrics and add Proxmox maintenance overview

maintenance_test.go

@@ -0,0 +1,33 @@
+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)
+	}
+}