foo_test.go

package main

import (
	"crypto/rand"
	"io"
	"testing"
)

func BenchmarkCompressibility(b *testing.B) {
	buf := make([]byte, 8*1024*1024)

	_, err := io.ReadFull(rand.Reader, buf)
	if err != nil {
		b.Fatal(err)
	}

	b.ResetTimer()
	b.SetBytes(int64(len(buf)))

	for i := 0; i < b.N; i++ {
		compressibility(buf)
	}
}