// Copyright (c) 2022 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 resolvconffile import ( "net/netip" "reflect" "strings" "testing" "tailscale.com/util/dnsname" ) func TestParse(t *testing.T) { tests := []struct { in string want *Config wantErr bool }{ {in: `nameserver 192.168.0.100`, want: &Config{ Nameservers: []netip.Addr{ netip.MustParseAddr("192.168.0.100"), }, }, }, {in: `nameserver 192.168.0.100 # comment`, want: &Config{ Nameservers: []netip.Addr{ netip.MustParseAddr("192.168.0.100"), }, }, }, {in: `nameserver 192.168.0.100#`, want: &Config{ Nameservers: []netip.Addr{ netip.MustParseAddr("192.168.0.100"), }, }, }, {in: `nameserver #192.168.0.100`, wantErr: true}, {in: `nameserver`, wantErr: true}, {in: `# nameserver 192.168.0.100`, want: &Config{}}, {in: `nameserver192.168.0.100`, wantErr: true}, {in: `search tailsacle.com`, want: &Config{ SearchDomains: []dnsname.FQDN{"tailsacle.com."}, }, }, {in: `search tailsacle.com # typo`, want: &Config{ SearchDomains: []dnsname.FQDN{"tailsacle.com."}, }, }, {in: `searchtailsacle.com`, wantErr: true}, {in: `search`, wantErr: true}, } for _, tt := range tests { cfg, err := Parse(strings.NewReader(tt.in)) if tt.wantErr { if err != nil { continue } t.Errorf("missing error for %q", tt.in) continue } if err != nil { t.Errorf("unexpected error for %q: %v", tt.in, err) continue } if !reflect.DeepEqual(cfg, tt.want) { t.Errorf("got: %v\nwant: %v\n", cfg, tt.want) } } }