main_test.go

package main

import (
	"os"
	"testing"
)

var d os.FileInfo
var err error

func BenchmarkStat(b *testing.B) {
	for i := 0; i < b.N; i++ {
		d, err = os.Stat("main_test.go")
		if err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkOpenStat(b *testing.B) {
	var f *os.File
	for i := 0; i < b.N; i++ {
		f, err = os.Open("main_test.go")
		if err != nil {
			b.Fatal(err)
		}
		d, err = f.Stat()
		if err != nil {
			b.Fatal(err)
		}
		f.Close()
	}
}