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// Copyright 2011 The Go Authors.  All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

// This benchmark tests gzip and gunzip performance.

package go1

import (

        "bytes"

        gz "compress/gzip"

        "io"

        "io/ioutil"

        "testing"

)

var (

        jsongunz = bytes.Repeat(jsonbytes, 10)

        jsongz   []byte

)

func init() {

        var buf bytes.Buffer

        c, err := gz.NewWriter(&buf)

        if err != nil {

                panic(err)

        }

        c.Write(jsongunz)

        c.Close()

        jsongz = buf.Bytes()

}

func gzip() {

        c, err := gz.NewWriter(ioutil.Discard)

        if err != nil {

                panic(err)

        }

        if _, err := c.Write(jsongunz); err != nil {

                panic(err)

        }

        if err := c.Close(); err != nil {

                panic(err)

        }

}

func gunzip() {

        r, err := gz.NewReader(bytes.NewBuffer(jsongz))

        if err != nil {

                panic(err)

        }

        if _, err := io.Copy(ioutil.Discard, r); err != nil {

                panic(err)

        }

        r.Close()

}

func BenchmarkGzip(b *testing.B) {

        b.SetBytes(int64(len(jsongunz)))

        for i := 0; i < b.N; i++ {

                gzip()

        }

}

func BenchmarkGunzip(b *testing.B) {

        b.SetBytes(int64(len(jsongunz)))

        for i := 0; i < b.N; i++ {

                gunzip()

        }

}