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// Copyright 2015 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 tarutil
import (
"archive/tar"
"compress/gzip"
"io"
"os"
"path"
"strings"
"testing"
"time"
)
// fileInfo is an os.FileInfo implementation for tarHeader.
type fileInfo struct {
name string
mode os.FileMode
size int64
target string // if symlink
}
func (fi fileInfo) IsDir() bool { return fi.mode.IsDir() }
func (fi fileInfo) ModTime() time.Time { return time.Time{} }
func (fi fileInfo) Mode() os.FileMode { return fi.mode }
func (fi fileInfo) Name() string { return path.Base(fi.name) }
func (fi fileInfo) Size() int64 { return fi.size }
func (fi fileInfo) Sys() interface{} { return nil }
func tarHeader(t *testing.T, fi fileInfo) *tar.Header {
h, err := tar.FileInfoHeader(fi, fi.target)
if err != nil {
t.Fatalf("tarHeader: %v", err)
}
h.Name = fi.name // see docs on tar.FileInfoHeader
return h
}
func TestFileList(t *testing.T) {
fl := new(FileList)
fl.AddHeader(tarHeader(t, fileInfo{name: "symlink-file", target: "link-target", mode: 0644 | os.ModeSymlink}))
fl.AddRegular(tarHeader(t, fileInfo{name: "regular.txt", mode: 0644, size: 7}), 7, strings.NewReader("foo bar"))
tgz := fl.TarGz()
defer tgz.Close()
zr, err := gzip.NewReader(tgz)
if err != nil {
t.Fatalf("gzip.NewReader: %v", err)
}
tr := tar.NewReader(zr)
saw := 0
for {
h, err := tr.Next()
if err == io.EOF {
break
}
if err != nil {
t.Fatalf("tar.Reader.Next: %v", err)
}
saw++
switch h.Name {
case "symlink-file":
case "regular.txt":
all, err := io.ReadAll(tr)
if err != nil {
t.Fatalf("Reading regular.txt: %v", err)
}
if string(all) != "foo bar" {
t.Errorf("regular.txt = %q; want \"foo bar\"", all)
}
default:
t.Fatalf("unknown name %q", h.Name)
}
}
if saw != 2 {
t.Errorf("number of entries = %d; want 2", saw)
}
}