668 lines
16 KiB
Go
668 lines
16 KiB
Go
// Copyright 2016 Google Inc. All Rights Reserved.
|
|
//
|
|
// Distributed under MIT license.
|
|
// See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
|
|
|
|
package brotli
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/gzip"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"math"
|
|
"math/rand"
|
|
"os"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/andybalholm/brotli/matchfinder"
|
|
)
|
|
|
|
func checkCompressedData(compressedData, wantOriginalData []byte) error {
|
|
uncompressed, err := Decode(compressedData)
|
|
if err != nil {
|
|
return fmt.Errorf("brotli decompress failed: %v", err)
|
|
}
|
|
if !bytes.Equal(uncompressed, wantOriginalData) {
|
|
if len(wantOriginalData) != len(uncompressed) {
|
|
return fmt.Errorf(""+
|
|
"Data doesn't uncompress to the original value.\n"+
|
|
"Length of original: %v\n"+
|
|
"Length of uncompressed: %v",
|
|
len(wantOriginalData), len(uncompressed))
|
|
}
|
|
for i := range wantOriginalData {
|
|
if wantOriginalData[i] != uncompressed[i] {
|
|
return fmt.Errorf(""+
|
|
"Data doesn't uncompress to the original value.\n"+
|
|
"Original at %v is %v\n"+
|
|
"Uncompressed at %v is %v",
|
|
i, wantOriginalData[i], i, uncompressed[i])
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func TestEncoderNoWrite(t *testing.T) {
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: 5})
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close()=%v, want nil", err)
|
|
}
|
|
// Check Write after close.
|
|
if _, err := e.Write([]byte("hi")); err == nil {
|
|
t.Errorf("No error after Close() + Write()")
|
|
}
|
|
}
|
|
|
|
func TestEncoderEmptyWrite(t *testing.T) {
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: 5})
|
|
n, err := e.Write([]byte(""))
|
|
if n != 0 || err != nil {
|
|
t.Errorf("Write()=%v,%v, want 0, nil", n, err)
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close()=%v, want nil", err)
|
|
}
|
|
}
|
|
|
|
func TestWriter(t *testing.T) {
|
|
for level := BestSpeed; level <= BestCompression; level++ {
|
|
// Test basic encoder usage.
|
|
input := []byte("<html><body><H1>Hello world</H1></body></html>")
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: level})
|
|
in := bytes.NewReader([]byte(input))
|
|
n, err := io.Copy(e, in)
|
|
if err != nil {
|
|
t.Errorf("Copy Error: %v", err)
|
|
}
|
|
if int(n) != len(input) {
|
|
t.Errorf("Copy() n=%v, want %v", n, len(input))
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close Error after copied %d bytes: %v", n, err)
|
|
}
|
|
if err := checkCompressedData(out.Bytes(), input); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
out2 := bytes.Buffer{}
|
|
e.Reset(&out2)
|
|
n2, err := e.Write(input)
|
|
if err != nil {
|
|
t.Errorf("Write error after Reset: %v", err)
|
|
}
|
|
if n2 != len(input) {
|
|
t.Errorf("Write() after Reset n=%d, want %d", n2, len(input))
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close error after Reset (copied %d) bytes: %v", n2, err)
|
|
}
|
|
if !bytes.Equal(out.Bytes(), out2.Bytes()) {
|
|
t.Error("Compressed data after Reset doesn't equal first time")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestIssue22(t *testing.T) {
|
|
f, err := os.Open("testdata/issue22.gz")
|
|
if err != nil {
|
|
t.Fatalf("Error opening test data file: %v", err)
|
|
}
|
|
defer f.Close()
|
|
|
|
zr, err := gzip.NewReader(f)
|
|
if err != nil {
|
|
t.Fatalf("Error creating gzip reader: %v", err)
|
|
}
|
|
|
|
data, err := io.ReadAll(zr)
|
|
if err != nil {
|
|
t.Fatalf("Error reading test data: %v", err)
|
|
}
|
|
|
|
if len(data) != 2851073 {
|
|
t.Fatalf("Wrong length for test data: got %d, want 2851073", len(data))
|
|
}
|
|
|
|
for level := BestSpeed; level <= BestCompression; level++ {
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: level})
|
|
n, err := e.Write(data)
|
|
if err != nil {
|
|
t.Errorf("Error compressing data: %v", err)
|
|
}
|
|
if int(n) != len(data) {
|
|
t.Errorf("Write() n=%v, want %v", n, len(data))
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close Error after writing %d bytes: %v", n, err)
|
|
}
|
|
if err := checkCompressedData(out.Bytes(), data); err != nil {
|
|
t.Errorf("Error decompressing data at level %d: %v", level, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestEncoderStreams(t *testing.T) {
|
|
// Test that output is streamed.
|
|
// Adjust window size to ensure the encoder outputs at least enough bytes
|
|
// to fill the window.
|
|
const lgWin = 16
|
|
windowSize := int(math.Pow(2, lgWin))
|
|
input := make([]byte, 8*windowSize)
|
|
rand.Read(input)
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: 11, LGWin: lgWin})
|
|
halfInput := input[:len(input)/2]
|
|
in := bytes.NewReader(halfInput)
|
|
|
|
n, err := io.Copy(e, in)
|
|
if err != nil {
|
|
t.Errorf("Copy Error: %v", err)
|
|
}
|
|
|
|
// We've fed more data than the sliding window size. Check that some
|
|
// compressed data has been output.
|
|
if out.Len() == 0 {
|
|
t.Errorf("Output length is 0 after %d bytes written", n)
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close Error after copied %d bytes: %v", n, err)
|
|
}
|
|
if err := checkCompressedData(out.Bytes(), halfInput); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
|
|
func TestEncoderLargeInput(t *testing.T) {
|
|
for level := BestSpeed; level <= BestCompression; level++ {
|
|
input := make([]byte, 1000000)
|
|
rand.Read(input)
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: level})
|
|
in := bytes.NewReader(input)
|
|
|
|
n, err := io.Copy(e, in)
|
|
if err != nil {
|
|
t.Errorf("Copy Error: %v", err)
|
|
}
|
|
if int(n) != len(input) {
|
|
t.Errorf("Copy() n=%v, want %v", n, len(input))
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close Error after copied %d bytes: %v", n, err)
|
|
}
|
|
if err := checkCompressedData(out.Bytes(), input); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
out2 := bytes.Buffer{}
|
|
e.Reset(&out2)
|
|
n2, err := e.Write(input)
|
|
if err != nil {
|
|
t.Errorf("Write error after Reset: %v", err)
|
|
}
|
|
if n2 != len(input) {
|
|
t.Errorf("Write() after Reset n=%d, want %d", n2, len(input))
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close error after Reset (copied %d) bytes: %v", n2, err)
|
|
}
|
|
if !bytes.Equal(out.Bytes(), out2.Bytes()) {
|
|
t.Error("Compressed data after Reset doesn't equal first time")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestEncoderFlush(t *testing.T) {
|
|
input := make([]byte, 1000)
|
|
rand.Read(input)
|
|
out := bytes.Buffer{}
|
|
e := NewWriterOptions(&out, WriterOptions{Quality: 5})
|
|
in := bytes.NewReader(input)
|
|
_, err := io.Copy(e, in)
|
|
if err != nil {
|
|
t.Fatalf("Copy Error: %v", err)
|
|
}
|
|
if err := e.Flush(); err != nil {
|
|
t.Fatalf("Flush(): %v", err)
|
|
}
|
|
if out.Len() == 0 {
|
|
t.Fatalf("0 bytes written after Flush()")
|
|
}
|
|
decompressed := make([]byte, 1000)
|
|
reader := NewReader(bytes.NewReader(out.Bytes()))
|
|
n, err := reader.Read(decompressed)
|
|
if n != len(decompressed) || err != nil {
|
|
t.Errorf("Expected <%v, nil>, but <%v, %v>", len(decompressed), n, err)
|
|
}
|
|
if !bytes.Equal(decompressed, input) {
|
|
t.Errorf(""+
|
|
"Decompress after flush: %v\n"+
|
|
"%q\n"+
|
|
"want:\n%q",
|
|
err, decompressed, input)
|
|
}
|
|
if err := e.Close(); err != nil {
|
|
t.Errorf("Close(): %v", err)
|
|
}
|
|
}
|
|
|
|
type readerWithTimeout struct {
|
|
io.Reader
|
|
}
|
|
|
|
func (r readerWithTimeout) Read(p []byte) (int, error) {
|
|
type result struct {
|
|
n int
|
|
err error
|
|
}
|
|
ch := make(chan result)
|
|
go func() {
|
|
n, err := r.Reader.Read(p)
|
|
ch <- result{n, err}
|
|
}()
|
|
select {
|
|
case result := <-ch:
|
|
return result.n, result.err
|
|
case <-time.After(5 * time.Second):
|
|
return 0, fmt.Errorf("read timed out")
|
|
}
|
|
}
|
|
|
|
func TestDecoderStreaming(t *testing.T) {
|
|
pr, pw := io.Pipe()
|
|
writer := NewWriterOptions(pw, WriterOptions{Quality: 5, LGWin: 20})
|
|
reader := readerWithTimeout{NewReader(pr)}
|
|
defer func() {
|
|
go ioutil.ReadAll(pr) // swallow the "EOF" token from writer.Close
|
|
if err := writer.Close(); err != nil {
|
|
t.Errorf("writer.Close: %v", err)
|
|
}
|
|
}()
|
|
|
|
ch := make(chan []byte)
|
|
errch := make(chan error)
|
|
go func() {
|
|
for {
|
|
segment, ok := <-ch
|
|
if !ok {
|
|
return
|
|
}
|
|
if n, err := writer.Write(segment); err != nil || n != len(segment) {
|
|
errch <- fmt.Errorf("write=%v,%v, want %v,%v", n, err, len(segment), nil)
|
|
return
|
|
}
|
|
if err := writer.Flush(); err != nil {
|
|
errch <- fmt.Errorf("flush: %v", err)
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
defer close(ch)
|
|
|
|
segments := [...][]byte{
|
|
[]byte("first"),
|
|
[]byte("second"),
|
|
[]byte("third"),
|
|
}
|
|
for k, segment := range segments {
|
|
t.Run(fmt.Sprintf("Segment%d", k), func(t *testing.T) {
|
|
select {
|
|
case ch <- segment:
|
|
case err := <-errch:
|
|
t.Fatalf("write: %v", err)
|
|
case <-time.After(5 * time.Second):
|
|
t.Fatalf("timed out")
|
|
}
|
|
wantLen := len(segment)
|
|
got := make([]byte, wantLen)
|
|
if n, err := reader.Read(got); err != nil || n != wantLen || !bytes.Equal(got, segment) {
|
|
t.Fatalf("read[%d]=%q,%v,%v, want %q,%v,%v", k, got, n, err, segment, wantLen, nil)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestReader(t *testing.T) {
|
|
content := bytes.Repeat([]byte("hello world!"), 10000)
|
|
encoded, _ := Encode(content, WriterOptions{Quality: 5})
|
|
r := NewReader(bytes.NewReader(encoded))
|
|
var decodedOutput bytes.Buffer
|
|
n, err := io.Copy(&decodedOutput, r)
|
|
if err != nil {
|
|
t.Fatalf("Copy(): n=%v, err=%v", n, err)
|
|
}
|
|
if got := decodedOutput.Bytes(); !bytes.Equal(got, content) {
|
|
t.Errorf(""+
|
|
"Reader output:\n"+
|
|
"%q\n"+
|
|
"want:\n"+
|
|
"<%d bytes>",
|
|
got, len(content))
|
|
}
|
|
|
|
r.Reset(bytes.NewReader(encoded))
|
|
decodedOutput.Reset()
|
|
n, err = io.Copy(&decodedOutput, r)
|
|
if err != nil {
|
|
t.Fatalf("After Reset: Copy(): n=%v, err=%v", n, err)
|
|
}
|
|
if got := decodedOutput.Bytes(); !bytes.Equal(got, content) {
|
|
t.Errorf("After Reset: "+
|
|
"Reader output:\n"+
|
|
"%q\n"+
|
|
"want:\n"+
|
|
"<%d bytes>",
|
|
got, len(content))
|
|
}
|
|
|
|
}
|
|
|
|
func TestDecode(t *testing.T) {
|
|
content := bytes.Repeat([]byte("hello world!"), 10000)
|
|
encoded, _ := Encode(content, WriterOptions{Quality: 5})
|
|
decoded, err := Decode(encoded)
|
|
if err != nil {
|
|
t.Errorf("Decode: %v", err)
|
|
}
|
|
if !bytes.Equal(decoded, content) {
|
|
t.Errorf(""+
|
|
"Decode content:\n"+
|
|
"%q\n"+
|
|
"want:\n"+
|
|
"<%d bytes>",
|
|
decoded, len(content))
|
|
}
|
|
}
|
|
|
|
func TestQuality(t *testing.T) {
|
|
content := bytes.Repeat([]byte("hello world!"), 10000)
|
|
for q := 0; q < 12; q++ {
|
|
encoded, _ := Encode(content, WriterOptions{Quality: q})
|
|
decoded, err := Decode(encoded)
|
|
if err != nil {
|
|
t.Errorf("Decode: %v", err)
|
|
}
|
|
if !bytes.Equal(decoded, content) {
|
|
t.Errorf(""+
|
|
"Decode content:\n"+
|
|
"%q\n"+
|
|
"want:\n"+
|
|
"<%d bytes>",
|
|
decoded, len(content))
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDecodeFuzz(t *testing.T) {
|
|
// Test that the decoder terminates with corrupted input.
|
|
content := bytes.Repeat([]byte("hello world!"), 100)
|
|
rnd := rand.New(rand.NewSource(0))
|
|
encoded, err := Encode(content, WriterOptions{Quality: 5})
|
|
if err != nil {
|
|
t.Fatalf("Encode(<%d bytes>, _) = _, %s", len(content), err)
|
|
}
|
|
if len(encoded) == 0 {
|
|
t.Fatalf("Encode(<%d bytes>, _) produced empty output", len(content))
|
|
}
|
|
for i := 0; i < 100; i++ {
|
|
enc := append([]byte{}, encoded...)
|
|
for j := 0; j < 5; j++ {
|
|
enc[rnd.Intn(len(enc))] = byte(rnd.Intn(256))
|
|
}
|
|
Decode(enc)
|
|
}
|
|
}
|
|
|
|
func TestDecodeTrailingData(t *testing.T) {
|
|
content := bytes.Repeat([]byte("hello world!"), 100)
|
|
encoded, _ := Encode(content, WriterOptions{Quality: 5})
|
|
_, err := Decode(append(encoded, 0))
|
|
if err == nil {
|
|
t.Errorf("Expected 'excessive input' error")
|
|
}
|
|
}
|
|
|
|
func TestEncodeDecode(t *testing.T) {
|
|
for _, test := range []struct {
|
|
data []byte
|
|
repeats int
|
|
}{
|
|
{nil, 0},
|
|
{[]byte("A"), 1},
|
|
{[]byte("<html><body><H1>Hello world</H1></body></html>"), 10},
|
|
{[]byte("<html><body><H1>Hello world</H1></body></html>"), 1000},
|
|
} {
|
|
t.Logf("case %q x %d", test.data, test.repeats)
|
|
input := bytes.Repeat(test.data, test.repeats)
|
|
encoded, err := Encode(input, WriterOptions{Quality: 5})
|
|
if err != nil {
|
|
t.Errorf("Encode: %v", err)
|
|
}
|
|
// Inputs are compressible, but may be too small to compress.
|
|
if maxSize := len(input)/2 + 20; len(encoded) >= maxSize {
|
|
t.Errorf(""+
|
|
"Encode returned %d bytes, want <%d\n"+
|
|
"Encoded=%q",
|
|
len(encoded), maxSize, encoded)
|
|
}
|
|
decoded, err := Decode(encoded)
|
|
if err != nil {
|
|
t.Errorf("Decode: %v", err)
|
|
}
|
|
if !bytes.Equal(decoded, input) {
|
|
var want string
|
|
if len(input) > 320 {
|
|
want = fmt.Sprintf("<%d bytes>", len(input))
|
|
} else {
|
|
want = fmt.Sprintf("%q", input)
|
|
}
|
|
t.Errorf(""+
|
|
"Decode content:\n"+
|
|
"%q\n"+
|
|
"want:\n"+
|
|
"%s",
|
|
decoded, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestErrorReset(t *testing.T) {
|
|
compress := func(input []byte) []byte {
|
|
var buf bytes.Buffer
|
|
writer := new(Writer)
|
|
writer.Reset(&buf)
|
|
writer.Write(input)
|
|
writer.Close()
|
|
|
|
return buf.Bytes()
|
|
}
|
|
|
|
corruptReader := func(reader *Reader) {
|
|
buf := bytes.NewBuffer([]byte("trash"))
|
|
reader.Reset(buf)
|
|
_, err := io.ReadAll(reader)
|
|
if err == nil {
|
|
t.Fatalf("successively decompressed invalid input")
|
|
}
|
|
}
|
|
|
|
decompress := func(input []byte, reader *Reader) []byte {
|
|
buf := bytes.NewBuffer(input)
|
|
reader.Reset(buf)
|
|
output, err := io.ReadAll(reader)
|
|
if err != nil {
|
|
t.Fatalf("failed to decompress data %s", err.Error())
|
|
}
|
|
|
|
return output
|
|
}
|
|
|
|
source := []byte("text")
|
|
|
|
compressed := compress(source)
|
|
reader := new(Reader)
|
|
corruptReader(reader)
|
|
decompressed := decompress(compressed, reader)
|
|
if string(source) != string(decompressed) {
|
|
t.Fatalf("decompressed data does not match original state")
|
|
}
|
|
}
|
|
|
|
// Encode returns content encoded with Brotli.
|
|
func Encode(content []byte, options WriterOptions) ([]byte, error) {
|
|
var buf bytes.Buffer
|
|
writer := NewWriterOptions(&buf, options)
|
|
_, err := writer.Write(content)
|
|
if closeErr := writer.Close(); err == nil {
|
|
err = closeErr
|
|
}
|
|
return buf.Bytes(), err
|
|
}
|
|
|
|
// Decode decodes Brotli encoded data.
|
|
func Decode(encodedData []byte) ([]byte, error) {
|
|
r := NewReader(bytes.NewReader(encodedData))
|
|
return ioutil.ReadAll(r)
|
|
}
|
|
|
|
func BenchmarkEncodeLevels(b *testing.B) {
|
|
opticks, err := ioutil.ReadFile("testdata/Isaac.Newton-Opticks.txt")
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
|
|
for level := BestSpeed; level <= BestCompression; level++ {
|
|
b.Run(fmt.Sprintf("%d", level), func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
b.SetBytes(int64(len(opticks)))
|
|
for i := 0; i < b.N; i++ {
|
|
w := NewWriterLevel(ioutil.Discard, level)
|
|
w.Write(opticks)
|
|
w.Close()
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkEncodeLevelsReset(b *testing.B) {
|
|
opticks, err := ioutil.ReadFile("testdata/Isaac.Newton-Opticks.txt")
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
|
|
for level := BestSpeed; level <= BestCompression; level++ {
|
|
buf := new(bytes.Buffer)
|
|
w := NewWriterLevel(buf, level)
|
|
w.Write(opticks)
|
|
w.Close()
|
|
b.Run(fmt.Sprintf("%d", level), func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
b.ReportMetric(float64(len(opticks))/float64(buf.Len()), "ratio")
|
|
b.SetBytes(int64(len(opticks)))
|
|
for i := 0; i < b.N; i++ {
|
|
w.Reset(ioutil.Discard)
|
|
w.Write(opticks)
|
|
w.Close()
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkDecodeLevels(b *testing.B) {
|
|
opticks, err := ioutil.ReadFile("testdata/Isaac.Newton-Opticks.txt")
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
|
|
for level := BestSpeed; level <= BestCompression; level++ {
|
|
buf := new(bytes.Buffer)
|
|
w := NewWriterLevel(buf, level)
|
|
w.Write(opticks)
|
|
w.Close()
|
|
compressed := buf.Bytes()
|
|
b.Run(fmt.Sprintf("%d", level), func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
b.SetBytes(int64(len(opticks)))
|
|
for i := 0; i < b.N; i++ {
|
|
io.Copy(ioutil.Discard, NewReader(bytes.NewReader(compressed)))
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func test(t *testing.T, filename string, m matchfinder.MatchFinder, blockSize int) {
|
|
data, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
b := new(bytes.Buffer)
|
|
w := &matchfinder.Writer{
|
|
Dest: b,
|
|
MatchFinder: m,
|
|
Encoder: &Encoder{},
|
|
BlockSize: blockSize,
|
|
}
|
|
w.Write(data)
|
|
w.Close()
|
|
compressed := b.Bytes()
|
|
sr := NewReader(bytes.NewReader(compressed))
|
|
decompressed, err := ioutil.ReadAll(sr)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !bytes.Equal(decompressed, data) {
|
|
t.Fatal("decompressed output doesn't match")
|
|
}
|
|
}
|
|
|
|
func benchmark(b *testing.B, filename string, m matchfinder.MatchFinder, blockSize int) {
|
|
b.StopTimer()
|
|
b.ReportAllocs()
|
|
data, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
|
|
b.SetBytes(int64(len(data)))
|
|
buf := new(bytes.Buffer)
|
|
w := &matchfinder.Writer{
|
|
Dest: buf,
|
|
MatchFinder: m,
|
|
Encoder: &Encoder{},
|
|
BlockSize: blockSize,
|
|
}
|
|
w.Write(data)
|
|
w.Close()
|
|
b.ReportMetric(float64(len(data))/float64(buf.Len()), "ratio")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
w.Reset(ioutil.Discard)
|
|
w.Write(data)
|
|
w.Close()
|
|
}
|
|
}
|
|
|
|
func TestEncodeM4(t *testing.T) {
|
|
test(t, "testdata/Isaac.Newton-Opticks.txt", &matchfinder.M4{MaxDistance: 1 << 18}, 1<<16)
|
|
}
|
|
|
|
func BenchmarkEncodeM4(b *testing.B) {
|
|
benchmark(b, "testdata/Isaac.Newton-Opticks.txt", &matchfinder.M4{MaxDistance: 1 << 20}, 1<<16)
|
|
}
|
|
|
|
func TestEncodeM4Limited(t *testing.T) {
|
|
test(t, "testdata/Isaac.Newton-Opticks.txt", &matchfinder.M4{MaxDistance: 1 << 18, LimitedSearch: true}, 1<<16)
|
|
}
|
|
|
|
func BenchmarkEncodeM4Limited(b *testing.B) {
|
|
benchmark(b, "testdata/Isaac.Newton-Opticks.txt", &matchfinder.M4{MaxDistance: 1 << 20, LimitedSearch: true}, 1<<16)
|
|
}
|