71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package state
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import (
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"bytes"
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"fmt"
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"math/rand"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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)
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func BenchmarkCutOriginal(b *testing.B) {
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value := common.HexToHash("0x01")
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for i := 0; i < b.N; i++ {
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bytes.TrimLeft(value[:], "\x00")
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}
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}
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func BenchmarkCutsetterFn(b *testing.B) {
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value := common.HexToHash("0x01")
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cutSetFn := func(r rune) bool {
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return int32(r) == int32(0)
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}
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for i := 0; i < b.N; i++ {
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bytes.TrimLeftFunc(value[:], cutSetFn)
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}
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}
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func BenchmarkCutCustomTrim(b *testing.B) {
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value := common.HexToHash("0x01")
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for i := 0; i < b.N; i++ {
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common.TrimLeftZeroes(value[:])
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}
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}
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func xTestFuzzCutter(t *testing.T) {
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rand.Seed(time.Now().Unix())
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for {
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v := make([]byte, 20)
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zeroes := rand.Intn(21)
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rand.Read(v[zeroes:])
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exp := bytes.TrimLeft(v[:], "\x00")
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got := common.TrimLeftZeroes(v)
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if !bytes.Equal(exp, got) {
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fmt.Printf("Input %x\n", v)
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fmt.Printf("Exp %x\n", exp)
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fmt.Printf("Got %x\n", got)
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t.Fatalf("Error")
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}
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//break
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}
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}
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