gzip_test.go

Documentation: test/bench/go1

     1  // Copyright 2011 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // This benchmark tests gzip and gunzip performance.
     6  
     7  package go1
     8  
     9  import (
    10  	"bytes"
    11  	gz "compress/gzip"
    12  	"io"
    13  	"io/ioutil"
    14  	"testing"
    15  )
    16  
    17  var (
    18  	jsongunz = bytes.Repeat(jsonbytes, 10)
    19  	jsongz   []byte
    20  )
    21  
    22  func init() {
    23  	var buf bytes.Buffer
    24  	c := gz.NewWriter(&buf)
    25  	c.Write(jsongunz)
    26  	c.Close()
    27  	jsongz = buf.Bytes()
    28  }
    29  
    30  func gzip() {
    31  	c := gz.NewWriter(ioutil.Discard)
    32  	if _, err := c.Write(jsongunz); err != nil {
    33  		panic(err)
    34  	}
    35  	if err := c.Close(); err != nil {
    36  		panic(err)
    37  	}
    38  }
    39  
    40  func gunzip() {
    41  	r, err := gz.NewReader(bytes.NewBuffer(jsongz))
    42  	if err != nil {
    43  		panic(err)
    44  	}
    45  	if _, err := io.Copy(ioutil.Discard, r); err != nil {
    46  		panic(err)
    47  	}
    48  	r.Close()
    49  }
    50  
    51  func BenchmarkGzip(b *testing.B) {
    52  	b.SetBytes(int64(len(jsongunz)))
    53  	for i := 0; i < b.N; i++ {
    54  		gzip()
    55  	}
    56  }
    57  
    58  func BenchmarkGunzip(b *testing.B) {
    59  	b.SetBytes(int64(len(jsongunz)))
    60  	for i := 0; i < b.N; i++ {
    61  		gunzip()
    62  	}
    63  }
    64
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