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// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package netstack
import (
"reflect"
"testing"
"inet.af/netaddr"
"tailscale.com/tailcfg"
"tailscale.com/types/netmap"
)
func TestDNSMapFromNetworkMap(t *testing.T) {
pfx := netaddr.MustParseIPPrefix
ip := netaddr.MustParseIP
tests := []struct {
name string
nm *netmap.NetworkMap
want DNSMap
}{
{
name: "self",
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100.102.103.104/32"),
pfx("100::123/128"),
},
},
want: DNSMap{
"foo": ip("100.102.103.104"),
"foo.tailnet": ip("100.102.103.104"),
},
},
{
name: "self_and_peers",
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100.102.103.104/32"),
pfx("100::123/128"),
},
Peers: []*tailcfg.Node{
{
Name: "a.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100.0.0.201/32"),
pfx("100::201/128"),
},
},
{
Name: "b.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100::202/128"),
},
},
},
},
want: DNSMap{
"foo": ip("100.102.103.104"),
"foo.tailnet": ip("100.102.103.104"),
"a": ip("100.0.0.201"),
"a.tailnet": ip("100.0.0.201"),
"b": ip("100::202"),
"b.tailnet": ip("100::202"),
},
},
{
name: "self_has_v6_only",
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100::123/128"),
},
Peers: []*tailcfg.Node{
{
Name: "a.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100.0.0.201/32"),
pfx("100::201/128"),
},
},
{
Name: "b.tailnet",
Addresses: []netaddr.IPPrefix{
pfx("100::202/128"),
},
},
},
},
want: DNSMap{
"foo": ip("100::123"),
"foo.tailnet": ip("100::123"),
"a": ip("100::201"),
"a.tailnet": ip("100::201"),
"b": ip("100::202"),
"b.tailnet": ip("100::202"),
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := DNSMapFromNetworkMap(tt.nm)
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("mismatch:\n got %v\nwant %v\n", got, tt.want)
}
})
}
}
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