package main

import (
	"time"

	"github.com/phuslu/fasttime"
)

func main() {
	println(fasttime.Timestamp()))
	println(fasttime.Strftime("%a %b %d %H:%M:%S %Z %Y", time.Now()))
}

// 1608220004
// Thu Dec 17 10:49:04 +08 2020

// go test -v -cpu=4 -run=none -bench=. -benchmem strftime_test.go
package strftime_test

import (
	"io/ioutil"
	"testing"
	"time"

	itchyny "github.com/itchyny/timefmt-go"
	lestrrat "github.com/lestrrat-go/strftime"
	fasttime "github.com/phuslu/fasttime"
)

const benchfmt = `%a %b %e %H:%M:%S %Z %Y`

var now = time.Now()

func BenchmarkLestrrat(b *testing.B) {
	p, _ := lestrrat.New(benchfmt)
	for i := 0; i < b.N; i++ {
		p.Format(ioutil.Discard, now)
	}
}

func BenchmarkItchyny(b *testing.B) {
	for i := 0; i < b.N; i++ {
		itchyny.Format(now, benchfmt)
	}
}

func BenchmarkFasttime(b *testing.B) {
	for i := 0; i < b.N; i++ {
		fasttime.Strftime(benchfmt, now)
	}
}

BenchmarkLestrrat 	 2092376	       583 ns/op	      64 B/op	       1 allocs/op
BenchmarkItchyny  	 2787598	       430 ns/op	       0 B/op	       0 allocs/op
BenchmarkFasttime 	 3440578	       342 ns/op	       0 B/op	       0 allocs/op