package identity

import (
	"strings"
	"testing"
)

// novox/hq ADR 0105: the found tunnel's private key becomes the node's overlay key, stored as a
// generated one is, and the public half the mesh records is derived from it — so the peers that
// know the tunnel by that key keep reaching it.
func TestAnOverlayKeyTakenFromAFoundTunnelIsTheSameKey(t *testing.T) {
	generated, err := GenerateOverlayKey()
	if err != nil {
		t.Fatal(err)
	}
	taken, err := OverlayKeyFrom(generated.Private)
	if err != nil {
		t.Fatal(err)
	}
	if taken.Public != generated.Public || taken.Private != generated.Private {
		t.Fatalf("a key taken from a private half is not that key: %+v vs %+v", taken, generated)
	}
	for _, bad := range []string{"", "not base64!", "c2hvcnQ="} {
		if _, err := OverlayKeyFrom(bad); err == nil || !strings.Contains(err.Error(), "found tunnel") {
			t.Errorf("%q was taken as a key: %v", bad, err)
		}
	}
}