93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package disco
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"inet.af/netaddr"
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)
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func TestMarshalAndParse(t *testing.T) {
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tests := []struct {
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name string
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want string
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m Message
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}{
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{
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name: "ping",
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m: &Ping{
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TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
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},
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want: "01 00 01 02 03 04 05 06 07 08 09 0a 0b 0c",
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},
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{
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name: "pong",
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m: &Pong{
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TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
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Src: mustIPPort("2.3.4.5:1234"),
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},
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want: "02 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 00 00 00 00 00 00 00 00 00 00 ff ff 02 03 04 05 04 d2",
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},
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{
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name: "pongv6",
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m: &Pong{
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TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
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Src: mustIPPort("[fed0::12]:6666"),
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},
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want: "02 00 01 02 03 04 05 06 07 08 09 0a 0b 0c fe d0 00 00 00 00 00 00 00 00 00 00 00 00 00 12 1a 0a",
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},
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{
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name: "call_me_maybe",
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m: &CallMeMaybe{},
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want: "03 00",
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},
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{
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name: "call_me_maybe_endpoints",
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m: &CallMeMaybe{
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MyNumber: []netaddr.IPPort{
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netaddr.MustParseIPPort("1.2.3.4:567"),
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netaddr.MustParseIPPort("[2001::3456]:789"),
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},
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},
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want: "03 00 00 00 00 00 00 00 00 00 00 00 ff ff 01 02 03 04 02 37 20 01 00 00 00 00 00 00 00 00 00 00 00 00 34 56 03 15",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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foo := []byte("foo")
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got := string(tt.m.AppendMarshal(foo))
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if !strings.HasPrefix(got, "foo") {
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t.Fatalf("didn't start with foo: got %q", got)
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}
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got = strings.TrimPrefix(got, "foo")
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gotHex := fmt.Sprintf("% x", got)
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if gotHex != tt.want {
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t.Fatalf("wrong marshal\n got: %s\nwant: %s\n", gotHex, tt.want)
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}
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back, err := Parse([]byte(got))
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if err != nil {
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t.Fatalf("parse back: %v", err)
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}
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if !reflect.DeepEqual(back, tt.m) {
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t.Errorf("message in %+v doesn't match Parse back result %+v", tt.m, back)
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}
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})
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}
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}
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func mustIPPort(s string) netaddr.IPPort {
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ipp, err := netaddr.ParseIPPort(s)
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if err != nil {
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panic(err)
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}
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return ipp
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}
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