buffer test

buffer2_test.go

package main

import (
	"bytes"
	"io"
	"testing"
)

const N int = 2000000

func BenchmarkReadFrom(b *testing.B) {
	data := make([]byte, N)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		reader := bytes.NewBuffer(data)
		buf := new(bytes.Buffer)
		buf.ReadFrom(reader)
		buf.Bytes()
	}
}
func BenchmarkReadCopyVar(b *testing.B) {
	data := make([]byte, N)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		reader := bytes.NewBuffer(data)
		buf := new(bytes.Buffer)
		io.Copy(buf, reader)
		buf.Bytes()
		buf.Reset()
	}
}

func BenchmarkReadCopy(b *testing.B) {
	data := make([]byte, N)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		reader := bytes.NewBuffer(data)
		buf := new(bytes.Buffer)
		io.Copy(buf, reader)
		buf.Bytes()
	}
}

buffer_test.go

package main

import (
	"bytes"
	"io"
	"testing"
)

const N int = 1000

func BenchmarkReadAll(b *testing.B) {
	data := make([]byte, N)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		reader := bytes.NewBuffer(data)
		io.ReadAll(reader)
	}
}

func BenchmarkReadFrom(b *testing.B) {
	data := make([]byte, N)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		reader := bytes.NewBuffer(data)
		buf := new(bytes.Buffer)
		buf.ReadFrom(reader)
		buf.Bytes()
	}
}

func BenchmarkReadCopy(b *testing.B) {
	data := make([]byte, N)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		reader := bytes.NewBuffer(data)
		buf := new(bytes.Buffer)
		io.Copy(buf, reader)
		buf.Bytes()
	}
}