97 lines
3.6 KiB
Go
97 lines
3.6 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package flate
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import (
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"bytes"
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"io"
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"io/ioutil"
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"runtime"
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"strings"
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"testing"
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)
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func TestNlitOutOfRange(t *testing.T) {
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// Trying to decode this bogus flate data, which has a Huffman table
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// with nlit=288, should not panic.
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io.Copy(ioutil.Discard, NewReader(strings.NewReader(
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"\xfc\xfe\x36\xe7\x5e\x1c\xef\xb3\x55\x58\x77\xb6\x56\xb5\x43\xf4"+
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"\x6f\xf2\xd2\xe6\x3d\x99\xa0\x85\x8c\x48\xeb\xf8\xda\x83\x04\x2a"+
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"\x75\xc4\xf8\x0f\x12\x11\xb9\xb4\x4b\x09\xa0\xbe\x8b\x91\x4c")))
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}
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const (
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digits = iota
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twain
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)
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var testfiles = []string{
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// Digits is the digits of the irrational number e. Its decimal representation
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// does not repeat, but there are only 10 possible digits, so it should be
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// reasonably compressible.
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digits: "../testdata/e.txt",
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// Twain is Project Gutenberg's edition of Mark Twain's classic English novel.
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twain: "../testdata/Mark.Twain-Tom.Sawyer.txt",
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}
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func benchmarkDecode(b *testing.B, testfile, level, n int) {
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b.ReportAllocs()
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b.StopTimer()
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b.SetBytes(int64(n))
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buf0, err := ioutil.ReadFile(testfiles[testfile])
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if err != nil {
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b.Fatal(err)
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}
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if len(buf0) == 0 {
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b.Fatalf("test file %q has no data", testfiles[testfile])
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}
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compressed := new(bytes.Buffer)
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w, err := NewWriter(compressed, level)
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if err != nil {
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b.Fatal(err)
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}
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for i := 0; i < n; i += len(buf0) {
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if len(buf0) > n-i {
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buf0 = buf0[:n-i]
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}
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io.Copy(w, bytes.NewReader(buf0))
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}
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w.Close()
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buf1 := compressed.Bytes()
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buf0, compressed, w = nil, nil, nil
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runtime.GC()
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b.StartTimer()
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for i := 0; i < b.N; i++ {
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io.Copy(ioutil.Discard, NewReader(bytes.NewReader(buf1)))
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}
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}
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// These short names are so that gofmt doesn't break the BenchmarkXxx function
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// bodies below over multiple lines.
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const (
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speed = BestSpeed
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default_ = DefaultCompression
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compress = BestCompression
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)
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func BenchmarkDecodeDigitsSpeed1e4(b *testing.B) { benchmarkDecode(b, digits, speed, 1e4) }
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func BenchmarkDecodeDigitsSpeed1e5(b *testing.B) { benchmarkDecode(b, digits, speed, 1e5) }
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func BenchmarkDecodeDigitsSpeed1e6(b *testing.B) { benchmarkDecode(b, digits, speed, 1e6) }
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func BenchmarkDecodeDigitsDefault1e4(b *testing.B) { benchmarkDecode(b, digits, default_, 1e4) }
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func BenchmarkDecodeDigitsDefault1e5(b *testing.B) { benchmarkDecode(b, digits, default_, 1e5) }
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func BenchmarkDecodeDigitsDefault1e6(b *testing.B) { benchmarkDecode(b, digits, default_, 1e6) }
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func BenchmarkDecodeDigitsCompress1e4(b *testing.B) { benchmarkDecode(b, digits, compress, 1e4) }
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func BenchmarkDecodeDigitsCompress1e5(b *testing.B) { benchmarkDecode(b, digits, compress, 1e5) }
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func BenchmarkDecodeDigitsCompress1e6(b *testing.B) { benchmarkDecode(b, digits, compress, 1e6) }
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func BenchmarkDecodeTwainSpeed1e4(b *testing.B) { benchmarkDecode(b, twain, speed, 1e4) }
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func BenchmarkDecodeTwainSpeed1e5(b *testing.B) { benchmarkDecode(b, twain, speed, 1e5) }
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func BenchmarkDecodeTwainSpeed1e6(b *testing.B) { benchmarkDecode(b, twain, speed, 1e6) }
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func BenchmarkDecodeTwainDefault1e4(b *testing.B) { benchmarkDecode(b, twain, default_, 1e4) }
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func BenchmarkDecodeTwainDefault1e5(b *testing.B) { benchmarkDecode(b, twain, default_, 1e5) }
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func BenchmarkDecodeTwainDefault1e6(b *testing.B) { benchmarkDecode(b, twain, default_, 1e6) }
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func BenchmarkDecodeTwainCompress1e4(b *testing.B) { benchmarkDecode(b, twain, compress, 1e4) }
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func BenchmarkDecodeTwainCompress1e5(b *testing.B) { benchmarkDecode(b, twain, compress, 1e5) }
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func BenchmarkDecodeTwainCompress1e6(b *testing.B) { benchmarkDecode(b, twain, compress, 1e6) }
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