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tailscale/wgengine/wglog/wglog_test.go

102 lines
2.2 KiB
Go

// Copyright (c) 2020 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 wglog_test
import (
"fmt"
"testing"
"go4.org/mem"
"tailscale.com/types/key"
"tailscale.com/types/logger"
"tailscale.com/wgengine/wgcfg"
"tailscale.com/wgengine/wglog"
)
func TestLogger(t *testing.T) {
tests := []struct {
format string
args []any
want string
omit bool
}{
{"hi", nil, "wg: hi", false},
{"Routine: starting", nil, "", true},
{"%v says it misses you", []any{stringer("peer(IMTB…r7lM)")}, "wg: [IMTBr] says it misses you", false},
}
type log struct {
format string
args []any
}
c := make(chan log, 1)
logf := func(format string, args ...any) {
select {
case c <- log{format, args}:
default:
t.Errorf("wrote %q, but shouldn't have", fmt.Sprintf(format, args...))
}
}
x := wglog.NewLogger(logf)
key, err := key.ParseNodePublicUntyped(mem.S("20c4c1ae54e1fd37cab6e9a532ca20646aff496796cc41d4519560e5e82bee53"))
if err != nil {
t.Fatal(err)
}
x.SetPeers([]wgcfg.Peer{{PublicKey: key}})
for _, tt := range tests {
if tt.omit {
// Write a message ourselves into the channel.
// Then if logf also attempts to write into the channel, it'll fail.
c <- log{}
}
x.DeviceLogger.Errorf(tt.format, tt.args...)
gotLog := <-c
if tt.omit {
continue
}
if got := fmt.Sprintf(gotLog.format, gotLog.args...); got != tt.want {
t.Errorf("Printf(%q, %v) = %q want %q", tt.format, tt.args, got, tt.want)
}
}
}
func stringer(s string) stringerString {
return stringerString(s)
}
type stringerString string
func (s stringerString) String() string { return string(s) }
func BenchmarkSetPeers(b *testing.B) {
b.ReportAllocs()
x := wglog.NewLogger(logger.Discard)
peers := [][]wgcfg.Peer{genPeers(0), genPeers(15), genPeers(16), genPeers(15)}
for i := 0; i < b.N; i++ {
for _, p := range peers {
x.SetPeers(p)
}
}
}
func genPeers(n int) []wgcfg.Peer {
if n > 32 {
panic("too many peers")
}
if n == 0 {
return nil
}
peers := make([]wgcfg.Peer, n)
for i := range peers {
var k [32]byte
k[n] = byte(n)
peers[i].PublicKey = key.NodePublicFromRaw32(mem.B(k[:]))
}
return peers
}