ee46a0b108
Rather than using bytes.NewBuffer, which is a read/write entity (io.ReadWriter), use bytes.NewReader which is only a read entitiy (io.Reader) in all cases where it is possible. Benchmarking shows it's slightly faster and it's also technically more accurate since it ensures the data is read-only. There are a few cases where bytes.NewBuffer must still be used since a buffer with a known length is required for those instances.
335 lines
11 KiB
Go
335 lines
11 KiB
Go
// Copyright (c) 2013-2014 Conformal Systems LLC.
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package btcwire_test
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import (
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"bytes"
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"github.com/conformal/btcwire"
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"io/ioutil"
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"testing"
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)
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// genesisCoinbaseTx is the coinbase transaction for the genesis blocks for
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// the main network, regression test network, and test network (version 3).
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var genesisCoinbaseTx = btcwire.MsgTx{
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Version: 1,
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TxIn: []*btcwire.TxIn{
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{
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PreviousOutpoint: btcwire.OutPoint{
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Hash: btcwire.ShaHash{},
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Index: 0xffffffff,
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},
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SignatureScript: []byte{
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0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, 0x45, /* |.......E| */
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0x54, 0x68, 0x65, 0x20, 0x54, 0x69, 0x6d, 0x65, /* |The Time| */
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0x73, 0x20, 0x30, 0x33, 0x2f, 0x4a, 0x61, 0x6e, /* |s 03/Jan| */
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0x2f, 0x32, 0x30, 0x30, 0x39, 0x20, 0x43, 0x68, /* |/2009 Ch| */
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0x61, 0x6e, 0x63, 0x65, 0x6c, 0x6c, 0x6f, 0x72, /* |ancellor| */
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0x20, 0x6f, 0x6e, 0x20, 0x62, 0x72, 0x69, 0x6e, /* | on brin| */
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0x6b, 0x20, 0x6f, 0x66, 0x20, 0x73, 0x65, 0x63, /* |k of sec|*/
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0x6f, 0x6e, 0x64, 0x20, 0x62, 0x61, 0x69, 0x6c, /* |ond bail| */
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0x6f, 0x75, 0x74, 0x20, 0x66, 0x6f, 0x72, 0x20, /* |out for |*/
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0x62, 0x61, 0x6e, 0x6b, 0x73, /* |banks| */
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},
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Sequence: 0xffffffff,
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},
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},
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TxOut: []*btcwire.TxOut{
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{
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Value: 0x12a05f200,
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PkScript: []byte{
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0x41, 0x04, 0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, /* |A.g....U| */
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0x48, 0x27, 0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, /* |H'.g..q0| */
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0xb7, 0x10, 0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, /* |..\..(.9| */
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0x09, 0xa6, 0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, /* |..yb...a| */
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0xde, 0xb6, 0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, /* |..I..?L.| */
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0x38, 0xc4, 0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, /* |8..U....| */
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0x12, 0xde, 0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, /* |..\8M...| */
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0x8d, 0x57, 0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, /* |.W.Lp+k.| */
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0x1d, 0x5f, 0xac, /* |._.| */
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},
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},
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},
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LockTime: 0,
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}
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// BenchmarkWriteVarInt1 performs a benchmark on how long it takes to write
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// a single byte variable length integer.
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func BenchmarkWriteVarInt1(b *testing.B) {
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteVarInt(ioutil.Discard, 0, 1)
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}
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}
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// BenchmarkWriteVarInt3 performs a benchmark on how long it takes to write
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// a three byte variable length integer.
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func BenchmarkWriteVarInt3(b *testing.B) {
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteVarInt(ioutil.Discard, 0, 65535)
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}
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}
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// BenchmarkWriteVarInt5 performs a benchmark on how long it takes to write
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// a five byte variable length integer.
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func BenchmarkWriteVarInt5(b *testing.B) {
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteVarInt(ioutil.Discard, 0, 4294967295)
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}
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}
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// BenchmarkWriteVarInt9 performs a benchmark on how long it takes to write
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// a nine byte variable length integer.
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func BenchmarkWriteVarInt9(b *testing.B) {
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteVarInt(ioutil.Discard, 0, 18446744073709551615)
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}
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}
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// BenchmarkReadVarInt1 performs a benchmark on how long it takes to read
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// a single byte variable length integer.
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func BenchmarkReadVarInt1(b *testing.B) {
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buf := []byte{0x01}
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for i := 0; i < b.N; i++ {
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btcwire.TstReadVarInt(bytes.NewReader(buf), 0)
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}
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}
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// BenchmarkReadVarInt3 performs a benchmark on how long it takes to read
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// a three byte variable length integer.
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func BenchmarkReadVarInt3(b *testing.B) {
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buf := []byte{0x0fd, 0xff, 0xff}
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for i := 0; i < b.N; i++ {
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btcwire.TstReadVarInt(bytes.NewReader(buf), 0)
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}
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}
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// BenchmarkReadVarInt5 performs a benchmark on how long it takes to read
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// a five byte variable length integer.
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func BenchmarkReadVarInt5(b *testing.B) {
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buf := []byte{0xfe, 0xff, 0xff, 0xff, 0xff}
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for i := 0; i < b.N; i++ {
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btcwire.TstReadVarInt(bytes.NewReader(buf), 0)
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}
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}
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// BenchmarkReadVarInt9 performs a benchmark on how long it takes to read
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// a nine byte variable length integer.
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func BenchmarkReadVarInt9(b *testing.B) {
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buf := []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
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for i := 0; i < b.N; i++ {
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btcwire.TstReadVarInt(bytes.NewReader(buf), 0)
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}
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}
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// BenchmarkReadVarStr4 performs a benchmark on how long it takes to read a
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// four byte variable length string.
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func BenchmarkReadVarStr4(b *testing.B) {
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buf := []byte{0x04, 't', 'e', 's', 't'}
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for i := 0; i < b.N; i++ {
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btcwire.TstReadVarString(bytes.NewReader(buf), 0)
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}
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}
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// BenchmarkReadVarStr10 performs a benchmark on how long it takes to read a
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// ten byte variable length string.
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func BenchmarkReadVarStr10(b *testing.B) {
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buf := []byte{0x0a, 't', 'e', 's', 't', '0', '1', '2', '3', '4', '5'}
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for i := 0; i < b.N; i++ {
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btcwire.TstReadVarString(bytes.NewReader(buf), 0)
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}
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}
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// BenchmarkWriteVarStr4 performs a benchmark on how long it takes to write a
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// four byte variable length string.
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func BenchmarkWriteVarStr4(b *testing.B) {
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteVarString(ioutil.Discard, 0, "test")
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}
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}
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// BenchmarkWriteVarStr10 performs a benchmark on how long it takes to write a
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// ten byte variable length string.
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func BenchmarkWriteVarStr10(b *testing.B) {
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteVarString(ioutil.Discard, 0, "test012345")
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}
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}
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// BenchmarkReadOutPoint performs a benchmark on how long it takes to read a
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// transaction output point.
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func BenchmarkReadOutPoint(b *testing.B) {
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buf := []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Previous output hash
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0xff, 0xff, 0xff, 0xff, // Previous output index
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}
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var op btcwire.OutPoint
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for i := 0; i < b.N; i++ {
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btcwire.TstReadOutPoint(bytes.NewReader(buf), 0, 0, &op)
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}
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}
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// BenchmarkWriteOutPoint performs a benchmark on how long it takes to write a
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// transaction output point.
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func BenchmarkWriteOutPoint(b *testing.B) {
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op := &btcwire.OutPoint{
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Hash: btcwire.ShaHash{},
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Index: 0,
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}
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteOutPoint(ioutil.Discard, 0, 0, op)
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}
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}
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// BenchmarkReadTxOut performs a benchmark on how long it takes to read a
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// transaction output.
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func BenchmarkReadTxOut(b *testing.B) {
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buf := []byte{
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0x00, 0xf2, 0x05, 0x2a, 0x01, 0x00, 0x00, 0x00, // Transaction amount
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0x43, // Varint for length of pk script
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0x41, // OP_DATA_65
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0x04, 0x96, 0xb5, 0x38, 0xe8, 0x53, 0x51, 0x9c,
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0x72, 0x6a, 0x2c, 0x91, 0xe6, 0x1e, 0xc1, 0x16,
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0x00, 0xae, 0x13, 0x90, 0x81, 0x3a, 0x62, 0x7c,
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0x66, 0xfb, 0x8b, 0xe7, 0x94, 0x7b, 0xe6, 0x3c,
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0x52, 0xda, 0x75, 0x89, 0x37, 0x95, 0x15, 0xd4,
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0xe0, 0xa6, 0x04, 0xf8, 0x14, 0x17, 0x81, 0xe6,
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0x22, 0x94, 0x72, 0x11, 0x66, 0xbf, 0x62, 0x1e,
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0x73, 0xa8, 0x2c, 0xbf, 0x23, 0x42, 0xc8, 0x58,
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0xee, // 65-byte signature
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0xac, // OP_CHECKSIG
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}
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var txOut btcwire.TxOut
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for i := 0; i < b.N; i++ {
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btcwire.TstReadTxOut(bytes.NewReader(buf), 0, 0, &txOut)
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}
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}
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// BenchmarkWriteTxOut performs a benchmark on how long it takes to write
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// a transaction output.
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func BenchmarkWriteTxOut(b *testing.B) {
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txOut := blockOne.Transactions[0].TxOut[0]
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteTxOut(ioutil.Discard, 0, 0, txOut)
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}
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}
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// BenchmarkReadTxIn performs a benchmark on how long it takes to read a
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// transaction input.
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func BenchmarkReadTxIn(b *testing.B) {
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buf := []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Previous output hash
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0xff, 0xff, 0xff, 0xff, // Previous output index
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0x07, // Varint for length of signature script
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0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, // Signature script
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0xff, 0xff, 0xff, 0xff, // Sequence
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}
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var txIn btcwire.TxIn
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for i := 0; i < b.N; i++ {
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btcwire.TstReadTxIn(bytes.NewReader(buf), 0, 0, &txIn)
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}
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}
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// BenchmarkWriteTxIn performs a benchmark on how long it takes to write
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// a transaction input.
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func BenchmarkWriteTxIn(b *testing.B) {
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txIn := blockOne.Transactions[0].TxIn[0]
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteTxIn(ioutil.Discard, 0, 0, txIn)
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}
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}
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// BenchmarkDeserializeTx performs a benchmark on how long it takes to
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// deserialize a transaction.
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func BenchmarkDeserializeTx(b *testing.B) {
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buf := []byte{
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0x01, 0x00, 0x00, 0x00, // Version
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0x01, // Varint for number of input transactions
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // // Previous output hash
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0xff, 0xff, 0xff, 0xff, // Prevous output index
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0x07, // Varint for length of signature script
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0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, // Signature script
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0xff, 0xff, 0xff, 0xff, // Sequence
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0x01, // Varint for number of output transactions
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0x00, 0xf2, 0x05, 0x2a, 0x01, 0x00, 0x00, 0x00, // Transaction amount
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0x43, // Varint for length of pk script
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0x41, // OP_DATA_65
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0x04, 0x96, 0xb5, 0x38, 0xe8, 0x53, 0x51, 0x9c,
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0x72, 0x6a, 0x2c, 0x91, 0xe6, 0x1e, 0xc1, 0x16,
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0x00, 0xae, 0x13, 0x90, 0x81, 0x3a, 0x62, 0x7c,
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0x66, 0xfb, 0x8b, 0xe7, 0x94, 0x7b, 0xe6, 0x3c,
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0x52, 0xda, 0x75, 0x89, 0x37, 0x95, 0x15, 0xd4,
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0xe0, 0xa6, 0x04, 0xf8, 0x14, 0x17, 0x81, 0xe6,
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0x22, 0x94, 0x72, 0x11, 0x66, 0xbf, 0x62, 0x1e,
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0x73, 0xa8, 0x2c, 0xbf, 0x23, 0x42, 0xc8, 0x58,
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0xee, // 65-byte signature
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0xac, // OP_CHECKSIG
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0x00, 0x00, 0x00, 0x00, // Lock time
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}
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var tx btcwire.MsgTx
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for i := 0; i < b.N; i++ {
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tx.Deserialize(bytes.NewReader(buf))
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}
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}
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// BenchmarkSerializeTx performs a benchmark on how long it takes to serialize
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// a transaction.
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func BenchmarkSerializeTx(b *testing.B) {
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tx := blockOne.Transactions[0]
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for i := 0; i < b.N; i++ {
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tx.Serialize(ioutil.Discard)
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}
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}
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// BenchmarkReadBlockHeader performs a benchmark on how long it takes to
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// deserialize a block header.
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func BenchmarkReadBlockHeader(b *testing.B) {
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buf := []byte{
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0x01, 0x00, 0x00, 0x00, // Version 1
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0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72,
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0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f,
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0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c,
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0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, // PrevBlock
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0x3b, 0xa3, 0xed, 0xfd, 0x7a, 0x7b, 0x12, 0xb2,
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0x7a, 0xc7, 0x2c, 0x3e, 0x67, 0x76, 0x8f, 0x61,
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0x7f, 0xc8, 0x1b, 0xc3, 0x88, 0x8a, 0x51, 0x32,
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0x3a, 0x9f, 0xb8, 0xaa, 0x4b, 0x1e, 0x5e, 0x4a, // MerkleRoot
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0x29, 0xab, 0x5f, 0x49, // Timestamp
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0xff, 0xff, 0x00, 0x1d, // Bits
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0xf3, 0xe0, 0x01, 0x00, // Nonce
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0x00, // TxnCount Varint
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}
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var header btcwire.BlockHeader
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for i := 0; i < b.N; i++ {
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btcwire.TstReadBlockHeader(bytes.NewReader(buf), 0, &header)
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}
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}
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// BenchmarkWriteBlockHeader performs a benchmark on how long it takes to
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// serialize a block header.
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func BenchmarkWriteBlockHeader(b *testing.B) {
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header := blockOne.Header
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for i := 0; i < b.N; i++ {
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btcwire.TstWriteBlockHeader(ioutil.Discard, 0, &header)
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}
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}
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// BenchmarkTxSha performs a benchmark on how long it takes to hash a
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// transaction.
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func BenchmarkTxSha(b *testing.B) {
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for i := 0; i < b.N; i++ {
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genesisCoinbaseTx.TxSha()
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}
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}
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