package monitor_test

import (
	"testing"
	"time"

	"git.eeqj.de/sneak/rtnetmon/internal/monitor"
)

// TestClockStrings checks that the header shows UTC first and the host's
// local time second, so the two differ whenever the host is not on UTC.
func TestClockStrings(t *testing.T) {
	t.Parallel()

	berlin := time.FixedZone("CET", 3600)
	now := time.Date(2026, time.November, 6, 20, 30, 0, 0, berlin)

	utc, local := monitor.ClockStrings(now)

	if want := "Fri, 06 Nov 2026 19:30:00 +0000"; utc != want {
		t.Errorf("utc = %q, want %q", utc, want)
	}

	if want := "Fri, 06 Nov 2026 20:30:00 +0100"; local != want {
		t.Errorf("local = %q, want %q", local, want)
	}
}