package main

import (
	"crypto/md5"
	"crypto/sha1"
	"crypto/sha256"
	"crypto/sha512"
	"hash"
	"hash/fnv"
	"testing"
)

const (
	K = 1024
	DATALEN = 1 * K
)

func runHash(b *testing.B, h hash.Hash, n int) {
	var data = make([]byte, n)
	for i := 0; i < n; i++ {
		data[i] = byte(i*i)
	}
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		h.Reset()
		h.Sum(data)
	}
}

func BenchmarkFNV32(b *testing.B) {
	runHash(b, fnv.New32(), DATALEN)
}

func BenchmarkFNV64(b *testing.B) {
	runHash(b, fnv.New64(), DATALEN)
}

func BenchmarkFNV128(b *testing.B) {
	runHash(b, fnv.New128(), DATALEN)
}

func BenchmarkMD5(b *testing.B) {
	runHash(b, md5.New(), DATALEN)
}

func BenchmarkSHA1(b *testing.B) {
	runHash(b, sha1.New(), DATALEN)
}

func BenchmarkSHA224(b *testing.B) {
	runHash(b, sha256.New224(), DATALEN)
}

func BenchmarkSHA256(b *testing.B) {
	runHash(b, sha256.New(), DATALEN)
}

func BenchmarkSHA512(b *testing.B) {
	runHash(b, sha512.New(), DATALEN)
}