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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package main
import (
"bytes"
"errors"
"git.zx2c4.com/wireguard-go/tun"
"os"
"testing"
)
/* Helpers for writing unit tests
*/
type DummyTUN struct {
name string
mtu int
packets chan []byte
events chan tun.TUNEvent
}
func (tun *DummyTUN) File() *os.File {
return nil
}
func (tun *DummyTUN) Name() (string, error) {
return tun.name, nil
}
func (tun *DummyTUN) MTU() (int, error) {
return tun.mtu, nil
}
func (tun *DummyTUN) Write(d []byte, offset int) (int, error) {
tun.packets <- d[offset:]
return len(d), nil
}
func (tun *DummyTUN) Close() error {
close(tun.events)
close(tun.packets)
return nil
}
func (tun *DummyTUN) Events() chan tun.TUNEvent {
return tun.events
}
func (tun *DummyTUN) Read(d []byte, offset int) (int, error) {
t, ok := <-tun.packets
if !ok {
return 0, errors.New("device closed")
}
copy(d[offset:], t)
return len(t), nil
}
func CreateDummyTUN(name string) (tun.TUNDevice, error) {
var dummy DummyTUN
dummy.mtu = 0
dummy.packets = make(chan []byte, 100)
dummy.events = make(chan tun.TUNEvent, 10)
return &dummy, nil
}
func assertNil(t *testing.T, err error) {
if err != nil {
t.Fatal(err)
}
}
func assertEqual(t *testing.T, a []byte, b []byte) {
if bytes.Compare(a, b) != 0 {
t.Fatal(a, "!=", b)
}
}
func randDevice(t *testing.T) *Device {
sk, err := newPrivateKey()
if err != nil {
t.Fatal(err)
}
tun, _ := CreateDummyTUN("dummy")
logger := NewLogger(LogLevelError, "")
device := NewDevice(tun, logger)
device.SetPrivateKey(sk)
return device
}
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