221 lines
6.6 KiB
Go
221 lines
6.6 KiB
Go
package packets
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import (
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"bytes"
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"math"
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"testing"
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"github.com/stretchr/testify/require"
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)
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type fixedHeaderTable struct {
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rawBytes []byte
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header FixedHeader
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packetError bool
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flagError bool
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}
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var fixedHeaderExpected = []fixedHeaderTable{
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{
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rawBytes: []byte{Connect << 4, 0x00},
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header: FixedHeader{Type: Connect, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Connack << 4, 0x00},
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header: FixedHeader{Type: Connack, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish << 4, 0x00},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 1<<1, 0x00},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 1, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 1<<1 | 1, 0x00},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 1, Retain: true, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 2<<1, 0x00},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 2, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 2<<1 | 1, 0x00},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 2, Retain: true, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 1<<3, 0x00},
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header: FixedHeader{Type: Publish, Dup: true, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 1<<3 | 1, 0x00},
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header: FixedHeader{Type: Publish, Dup: true, Qos: 0, Retain: true, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 1<<3 | 1<<1 | 1, 0x00},
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header: FixedHeader{Type: Publish, Dup: true, Qos: 1, Retain: true, Remaining: 0},
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},
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{
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rawBytes: []byte{Publish<<4 | 1<<3 | 2<<1 | 1, 0x00},
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header: FixedHeader{Type: Publish, Dup: true, Qos: 2, Retain: true, Remaining: 0},
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},
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{
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rawBytes: []byte{Puback << 4, 0x00},
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header: FixedHeader{Type: Puback, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Pubrec << 4, 0x00},
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header: FixedHeader{Type: Pubrec, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Pubrel<<4 | 1<<1, 0x00},
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header: FixedHeader{Type: Pubrel, Dup: false, Qos: 1, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Pubcomp << 4, 0x00},
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header: FixedHeader{Type: Pubcomp, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Subscribe<<4 | 1<<1, 0x00},
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header: FixedHeader{Type: Subscribe, Dup: false, Qos: 1, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Suback << 4, 0x00},
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header: FixedHeader{Type: Suback, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Unsubscribe<<4 | 1<<1, 0x00},
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header: FixedHeader{Type: Unsubscribe, Dup: false, Qos: 1, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Unsuback << 4, 0x00},
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header: FixedHeader{Type: Unsuback, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Pingreq << 4, 0x00},
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header: FixedHeader{Type: Pingreq, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Pingresp << 4, 0x00},
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header: FixedHeader{Type: Pingresp, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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{
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rawBytes: []byte{Disconnect << 4, 0x00},
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header: FixedHeader{Type: Disconnect, Dup: false, Qos: 0, Retain: false, Remaining: 0},
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},
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// remaining length
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{
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rawBytes: []byte{Publish << 4, 0x0a},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 0, Retain: false, Remaining: 10},
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},
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{
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rawBytes: []byte{Publish << 4, 0x80, 0x04},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 0, Retain: false, Remaining: 512},
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},
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{
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rawBytes: []byte{Publish << 4, 0xd2, 0x07},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 0, Retain: false, Remaining: 978},
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},
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{
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rawBytes: []byte{Publish << 4, 0x86, 0x9d, 0x01},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 0, Retain: false, Remaining: 20102},
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},
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{
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rawBytes: []byte{Publish << 4, 0xd5, 0x86, 0xf9, 0x9e, 0x01},
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header: FixedHeader{Type: Publish, Dup: false, Qos: 0, Retain: false, Remaining: 333333333},
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packetError: true,
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},
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// Invalid flags for packet
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{
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rawBytes: []byte{Connect<<4 | 1<<3, 0x00},
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header: FixedHeader{Type: Connect, Dup: true, Qos: 0, Retain: false, Remaining: 0},
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flagError: true,
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},
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{
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rawBytes: []byte{Connect<<4 | 1<<1, 0x00},
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header: FixedHeader{Type: Connect, Dup: false, Qos: 1, Retain: false, Remaining: 0},
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flagError: true,
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},
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{
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rawBytes: []byte{Connect<<4 | 1, 0x00},
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header: FixedHeader{Type: Connect, Dup: false, Qos: 0, Retain: true, Remaining: 0},
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flagError: true,
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},
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}
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func TestFixedHeaderEncode(t *testing.T) {
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for i, wanted := range fixedHeaderExpected {
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buf := new(bytes.Buffer)
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wanted.header.Encode(buf)
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if wanted.flagError == false {
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require.Equal(t, len(wanted.rawBytes), len(buf.Bytes()), "Mismatched fixedheader length [i:%d] %v", i, wanted.rawBytes)
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require.EqualValues(t, wanted.rawBytes, buf.Bytes(), "Mismatched byte values [i:%d] %v", i, wanted.rawBytes)
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}
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}
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}
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func BenchmarkFixedHeaderEncode(b *testing.B) {
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buf := new(bytes.Buffer)
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for n := 0; n < b.N; n++ {
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fixedHeaderExpected[0].header.Encode(buf)
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}
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}
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func TestFixedHeaderDecode(t *testing.T) {
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for i, wanted := range fixedHeaderExpected {
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fh := new(FixedHeader)
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err := fh.Decode(wanted.rawBytes[0])
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if wanted.flagError {
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require.Error(t, err, "Expected error reading fixedheader [i:%d] %v", i, wanted.rawBytes)
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} else {
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require.NoError(t, err, "Error reading fixedheader [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Type, fh.Type, "Mismatched fixedheader type [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Dup, fh.Dup, "Mismatched fixedheader dup [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Qos, fh.Qos, "Mismatched fixedheader qos [i:%d] %v", i, wanted.rawBytes)
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require.Equal(t, wanted.header.Retain, fh.Retain, "Mismatched fixedheader retain [i:%d] %v", i, wanted.rawBytes)
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}
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}
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}
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func BenchmarkFixedHeaderDecode(b *testing.B) {
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fh := new(FixedHeader)
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for n := 0; n < b.N; n++ {
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err := fh.Decode(fixedHeaderExpected[0].rawBytes[0])
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if err != nil {
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panic(err)
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}
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}
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}
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func TestEncodeLength(t *testing.T) {
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tt := []struct {
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have int64
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want []byte
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}{
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{
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120,
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[]byte{0x78},
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},
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{
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math.MaxInt64,
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[]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f},
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},
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}
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for i, wanted := range tt {
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buf := new(bytes.Buffer)
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encodeLength(buf, wanted.have)
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require.Equal(t, wanted.want, buf.Bytes(), "Returned bytes should match length [i:%d] %s", i, wanted.have)
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}
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}
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func BenchmarkEncodeLength(b *testing.B) {
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buf := new(bytes.Buffer)
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for n := 0; n < b.N; n++ {
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encodeLength(buf, 120)
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}
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}
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