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wol_test.go
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wol_test.go
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package wol
import (
"bytes"
"io"
"net"
"reflect"
"testing"
)
var (
hwEthernet = net.HardwareAddr{0xee, 0x33, 0xee, 0x33, 0xee, 0x33}
)
func TestMagicPacketMarshalBinary(t *testing.T) {
var tests = []struct {
desc string
p *MagicPacket
b []byte
err error
}{
{
desc: "length 3 target",
p: &MagicPacket{
Target: net.HardwareAddr{0, 1, 2},
},
err: errInvalidTarget,
},
{
desc: "length 7 target",
p: &MagicPacket{
Target: net.HardwareAddr{0, 1, 2, 3, 4, 5, 6},
},
err: errInvalidTarget,
},
{
desc: "length 19 target",
p: &MagicPacket{
Target: make([]byte, 19),
},
err: errInvalidTarget,
},
{
desc: "length 1 password",
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{0},
},
err: errInvalidPassword,
},
{
desc: "length 5 password",
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{0, 1, 2, 3, 4},
},
err: errInvalidPassword,
},
{
desc: "length 7 password",
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{0, 1, 2, 3, 4, 5, 6},
},
err: errInvalidPassword,
},
{
desc: "OK, no password",
p: &MagicPacket{
Target: hwEthernet,
},
b: []byte{
// Sync
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
},
},
{
desc: "OK, length 4 password",
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{1, 2, 3, 4},
},
b: []byte{
// Sync
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
// Password
1, 2, 3, 4,
},
},
{
desc: "OK, length 6 password",
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{1, 2, 3, 4, 5, 6},
},
b: []byte{
// Sync
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
// Password
1, 2, 3, 4, 5, 6,
},
},
}
for i, tt := range tests {
b, err := tt.p.MarshalBinary()
if err != nil || tt.err != nil {
if want, got := tt.err, err; want != got {
t.Fatalf("[%02d] test %q, unexpected error: %v != %v",
i, tt.desc, want, got)
}
continue
}
if want, got := tt.b, b; !bytes.Equal(want, got) {
t.Fatalf("[%02d] test %q, unexpected bytes:\n- want: %v\n- got: %v",
i, tt.desc, want, got)
}
}
}
func TestMagicPacketUnmarshalBinary(t *testing.T) {
var tests = []struct {
desc string
b []byte
p *MagicPacket
err error
}{
{
desc: "length 101 (1 byte too short for ethernet target, no password)",
b: make([]byte, 101),
err: io.ErrUnexpectedEOF,
},
{
desc: "invalid sync stream (all zero)",
b: make([]byte, 102),
err: errInvalidSyncStream,
},
{
desc: "hardware address with error in repeated targets",
b: []byte{
// Sync stream
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
// Mismatch
0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
},
err: errInvalidTarget,
},
{
desc: "length 3 password",
b: []byte{
// Sync stream
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
1, 2, 3,
},
err: errInvalidPassword,
},
{
desc: "length 5 password",
b: []byte{
// Sync stream
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
1, 2, 3, 4, 5,
},
err: errInvalidPassword,
},
{
desc: "OK, no password",
b: []byte{
// Sync
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
},
p: &MagicPacket{
Target: hwEthernet,
// Make tests happy
Password: []byte{},
},
},
{
desc: "OK, length 4 password",
b: []byte{
// Sync
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
// Password
1, 2, 3, 4,
},
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{1, 2, 3, 4},
},
},
{
desc: "OK, length 6 password",
b: []byte{
// Sync
0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
// Target
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
0xee, 0x33, 0xee, 0x33, 0xee, 0x33,
// Password
1, 2, 3, 4, 5, 6,
},
p: &MagicPacket{
Target: hwEthernet,
Password: []byte{1, 2, 3, 4, 5, 6},
},
},
}
for i, tt := range tests {
p := new(MagicPacket)
if err := p.UnmarshalBinary(tt.b); err != nil || tt.err != nil {
if want, got := tt.err, err; want != got {
t.Fatalf("[%02d] test %q, unexpected error: %v != %v",
i, tt.desc, want, got)
}
continue
}
if want, got := tt.p, p; !reflect.DeepEqual(want, got) {
t.Fatalf("[%02d] test %q, unexpected MagicPacket:\n- want: %v\n- got: %v",
i, tt.desc, want, got)
}
}
}
// Benchmarks for MagicPacket.MarshalBinary
func BenchmarkMagicPacketMarshalBinary(b *testing.B) {
p := &MagicPacket{
Target: net.HardwareAddr{0xde, 0xad, 0xbe, 0xef, 0xde, 0xad},
}
benchmarkMagicPacketMarshalBinary(b, p)
}
func BenchmarkMagicPacketMarshalBinaryPassword(b *testing.B) {
p := &MagicPacket{
Target: net.HardwareAddr{0xde, 0xad, 0xbe, 0xef, 0xde, 0xad},
Password: []byte{0, 1, 2, 3, 4, 5},
}
benchmarkMagicPacketMarshalBinary(b, p)
}
func benchmarkMagicPacketMarshalBinary(b *testing.B, p *MagicPacket) {
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
if _, err := p.MarshalBinary(); err != nil {
b.Fatal(err)
}
}
}
// Benchmarks for MagicPacket.UnmarshalBinary
func BenchmarkMagicPacketUnmarshalBinary(b *testing.B) {
p := &MagicPacket{
Target: net.HardwareAddr{0xde, 0xad, 0xbe, 0xef, 0xde, 0xad},
}
benchmarkMagicPacketUnmarshalBinary(b, p)
}
func BenchmarkMagicPacketUnmarshalBinaryPassword(b *testing.B) {
p := &MagicPacket{
Target: net.HardwareAddr{0xde, 0xad, 0xbe, 0xef, 0xde, 0xad},
Password: []byte{0, 1, 2, 3, 4, 5},
}
benchmarkMagicPacketUnmarshalBinary(b, p)
}
func benchmarkMagicPacketUnmarshalBinary(b *testing.B, p *MagicPacket) {
pb, err := p.MarshalBinary()
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
if err := p.UnmarshalBinary(pb); err != nil {
b.Fatal(err)
}
}
}