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// Copyright 2010 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.
package zip
import (
"bytes"
"encoding/binary"
"io"
"io/ioutil"
"os"
"testing"
)
type ZipTest struct {
Name string
Comment string
File []ZipTestFile
Error os.Error // the error that Opening this file should return
}
type ZipTestFile struct {
Name string
Content []byte // if blank, will attempt to compare against File
File string // name of file to compare to (relative to testdata/)
}
var tests = []ZipTest{
{
Name: "test.zip",
Comment: "This is a zipfile comment.",
File: []ZipTestFile{
{
Name: "test.txt",
Content: []byte("This is a test text file.\n"),
},
{
Name: "gophercolor16x16.png",
File: "gophercolor16x16.png",
},
},
},
{
Name: "r.zip",
File: []ZipTestFile{
{
Name: "r/r.zip",
File: "r.zip",
},
},
},
{Name: "readme.zip"},
{Name: "readme.notzip", Error: FormatError},
}
func TestReader(t *testing.T) {
for _, zt := range tests {
readTestZip(t, zt)
}
}
func readTestZip(t *testing.T, zt ZipTest) {
z, err := OpenReader("testdata/" + zt.Name)
if err != zt.Error {
t.Errorf("error=%v, want %v", err, zt.Error)
return
}
// bail here if no Files expected to be tested
// (there may actually be files in the zip, but we don't care)
if zt.File == nil {
return
}
if z.Comment != zt.Comment {
t.Errorf("%s: comment=%q, want %q", zt.Name, z.Comment, zt.Comment)
}
if len(z.File) != len(zt.File) {
t.Errorf("%s: file count=%d, want %d", zt.Name, len(z.File), len(zt.File))
}
// test read of each file
for i, ft := range zt.File {
readTestFile(t, ft, z.File[i])
}
// test simultaneous reads
n := 0
done := make(chan bool)
for i := 0; i < 5; i++ {
for j, ft := range zt.File {
go func() {
readTestFile(t, ft, z.File[j])
done <- true
}()
n++
}
}
for ; n > 0; n-- {
<-done
}
// test invalid checksum
z.File[0].CRC32++ // invalidate
r, err := z.File[0].Open()
if err != nil {
t.Error(err)
return
}
var b bytes.Buffer
_, err = io.Copy(&b, r)
if err != ChecksumError {
t.Errorf("%s: copy error=%v, want %v", z.File[0].Name, err, ChecksumError)
}
}
func readTestFile(t *testing.T, ft ZipTestFile, f *File) {
if f.Name != ft.Name {
t.Errorf("name=%q, want %q", f.Name, ft.Name)
}
var b bytes.Buffer
r, err := f.Open()
if err != nil {
t.Error(err)
return
}
_, err = io.Copy(&b, r)
if err != nil {
t.Error(err)
return
}
r.Close()
var c []byte
if len(ft.Content) != 0 {
c = ft.Content
} else if c, err = ioutil.ReadFile("testdata/" + ft.File); err != nil {
t.Error(err)
return
}
if b.Len() != len(c) {
t.Errorf("%s: len=%d, want %d", f.Name, b.Len(), len(c))
return
}
for i, b := range b.Bytes() {
if b != c[i] {
t.Errorf("%s: content[%d]=%q want %q", f.Name, i, b, c[i])
return
}
}
}
func TestInvalidFiles(t *testing.T) {
const size = 1024 * 70 // 70kb
b := make([]byte, size)
// zeroes
_, err := NewReader(sliceReaderAt(b), size)
if err != FormatError {
t.Errorf("zeroes: error=%v, want %v", err, FormatError)
}
// repeated directoryEndSignatures
sig := make([]byte, 4)
binary.LittleEndian.PutUint32(sig, directoryEndSignature)
for i := 0; i < size-4; i += 4 {
copy(b[i:i+4], sig)
}
_, err = NewReader(sliceReaderAt(b), size)
if err != FormatError {
t.Errorf("sigs: error=%v, want %v", err, FormatError)
}
}
type sliceReaderAt []byte
func (r sliceReaderAt) ReadAt(b []byte, off int64) (int, os.Error) {
copy(b, r[int(off):int(off)+len(b)])
return len(b), nil
}
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