package backupgood

import (
	"encoding/json"
	"testing"
	"time"
)

// Restic's last good night per item, keyed as a disk-load reading is.
func TestALastGoodNightIsReadBackAndAnotherVersionRefused(t *testing.T) {
	at := time.Date(2026, 10, 29, 12, 0, 0, 0, time.UTC)
	goodRow, _ := json.Marshal(GoodRow{V: GoodVersion, Node: "ace", Module: "pg", Item: "data", CoveredBy: "/srv/pg", LastGood: at})
	if g, err := DecodeGoodRow(goodRow); err != nil || !g.LastGood.Equal(at) || GoodKey("ace", "pg", "data") != "ace.pg.data" ||
		GoodBucket != "restic_good" || GoodRead != "restic.good" {
		t.Fatalf("a last good night read back as %+v: %v", g, err)
	}
	if _, err := DecodeGoodRow([]byte(`{"v":2}`)); err == nil {
		t.Fatal("a last good night of another version was read")
	}
}