github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/klauspost/compress/flate/writer_test.go (about)

     1  // Copyright 2012 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  package flate
     6  
     7  import (
     8  	"io/ioutil"
     9  	"runtime"
    10  	"testing"
    11  )
    12  
    13  func benchmarkEncoder(b *testing.B, testfile, level, n int) {
    14  	b.StopTimer()
    15  	b.SetBytes(int64(n))
    16  	buf0, err := ioutil.ReadFile(testfiles[testfile])
    17  	if err != nil {
    18  		b.Fatal(err)
    19  	}
    20  	if len(buf0) == 0 {
    21  		b.Fatalf("test file %q has no data", testfiles[testfile])
    22  	}
    23  	buf1 := make([]byte, n)
    24  	for i := 0; i < n; i += len(buf0) {
    25  		if len(buf0) > n-i {
    26  			buf0 = buf0[:n-i]
    27  		}
    28  		copy(buf1[i:], buf0)
    29  	}
    30  	buf0 = nil
    31  	runtime.GC()
    32  	w, err := NewWriter(ioutil.Discard, level)
    33  	b.StartTimer()
    34  	for i := 0; i < b.N; i++ {
    35  		w.Reset(ioutil.Discard)
    36  		_, err = w.Write(buf1)
    37  		if err != nil {
    38  			b.Fatal(err)
    39  		}
    40  		err = w.Close()
    41  		if err != nil {
    42  			b.Fatal(err)
    43  		}
    44  	}
    45  }
    46  
    47  func BenchmarkEncodeDigitsConstant1e4(b *testing.B) { benchmarkEncoder(b, digits, constant, 1e4) }
    48  func BenchmarkEncodeDigitsConstant1e5(b *testing.B) { benchmarkEncoder(b, digits, constant, 1e5) }
    49  func BenchmarkEncodeDigitsConstant1e6(b *testing.B) { benchmarkEncoder(b, digits, constant, 1e6) }
    50  func BenchmarkEncodeDigitsSpeed1e4(b *testing.B)    { benchmarkEncoder(b, digits, speed, 1e4) }
    51  func BenchmarkEncodeDigitsSpeed1e5(b *testing.B)    { benchmarkEncoder(b, digits, speed, 1e5) }
    52  func BenchmarkEncodeDigitsSpeed1e6(b *testing.B)    { benchmarkEncoder(b, digits, speed, 1e6) }
    53  func BenchmarkEncodeDigitsDefault1e4(b *testing.B)  { benchmarkEncoder(b, digits, default_, 1e4) }
    54  func BenchmarkEncodeDigitsDefault1e5(b *testing.B)  { benchmarkEncoder(b, digits, default_, 1e5) }
    55  func BenchmarkEncodeDigitsDefault1e6(b *testing.B)  { benchmarkEncoder(b, digits, default_, 1e6) }
    56  func BenchmarkEncodeDigitsCompress1e4(b *testing.B) { benchmarkEncoder(b, digits, compress, 1e4) }
    57  func BenchmarkEncodeDigitsCompress1e5(b *testing.B) { benchmarkEncoder(b, digits, compress, 1e5) }
    58  func BenchmarkEncodeDigitsCompress1e6(b *testing.B) { benchmarkEncoder(b, digits, compress, 1e6) }
    59  func BenchmarkEncodeTwainConstant1e4(b *testing.B)  { benchmarkEncoder(b, twain, constant, 1e4) }
    60  func BenchmarkEncodeTwainConstant1e5(b *testing.B)  { benchmarkEncoder(b, twain, constant, 1e5) }
    61  func BenchmarkEncodeTwainConstant1e6(b *testing.B)  { benchmarkEncoder(b, twain, constant, 1e6) }
    62  func BenchmarkEncodeTwainSpeed1e4(b *testing.B)     { benchmarkEncoder(b, twain, speed, 1e4) }
    63  func BenchmarkEncodeTwainSpeed1e5(b *testing.B)     { benchmarkEncoder(b, twain, speed, 1e5) }
    64  func BenchmarkEncodeTwainSpeed1e6(b *testing.B)     { benchmarkEncoder(b, twain, speed, 1e6) }
    65  func BenchmarkEncodeTwainDefault1e4(b *testing.B)   { benchmarkEncoder(b, twain, default_, 1e4) }
    66  func BenchmarkEncodeTwainDefault1e5(b *testing.B)   { benchmarkEncoder(b, twain, default_, 1e5) }
    67  func BenchmarkEncodeTwainDefault1e6(b *testing.B)   { benchmarkEncoder(b, twain, default_, 1e6) }
    68  func BenchmarkEncodeTwainCompress1e4(b *testing.B)  { benchmarkEncoder(b, twain, compress, 1e4) }
    69  func BenchmarkEncodeTwainCompress1e5(b *testing.B)  { benchmarkEncoder(b, twain, compress, 1e5) }
    70  func BenchmarkEncodeTwainCompress1e6(b *testing.B)  { benchmarkEncoder(b, twain, compress, 1e6) }