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archive/tar: adding from go as of a9dddb53f
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23 changed files with 3195 additions and 0 deletions
284
archive/tar/tar_test.go
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284
archive/tar/tar_test.go
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// 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 tar
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import (
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"bytes"
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"io/ioutil"
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"os"
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"path"
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"reflect"
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"strings"
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"testing"
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"time"
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)
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func TestFileInfoHeader(t *testing.T) {
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fi, err := os.Stat("testdata/small.txt")
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if err != nil {
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t.Fatal(err)
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}
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h, err := FileInfoHeader(fi, "")
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if err != nil {
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t.Fatalf("FileInfoHeader: %v", err)
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}
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if g, e := h.Name, "small.txt"; g != e {
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t.Errorf("Name = %q; want %q", g, e)
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}
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if g, e := h.Mode, int64(fi.Mode().Perm())|c_ISREG; g != e {
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t.Errorf("Mode = %#o; want %#o", g, e)
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}
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if g, e := h.Size, int64(5); g != e {
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t.Errorf("Size = %v; want %v", g, e)
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}
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if g, e := h.ModTime, fi.ModTime(); !g.Equal(e) {
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t.Errorf("ModTime = %v; want %v", g, e)
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}
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// FileInfoHeader should error when passing nil FileInfo
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if _, err := FileInfoHeader(nil, ""); err == nil {
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t.Fatalf("Expected error when passing nil to FileInfoHeader")
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}
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}
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func TestFileInfoHeaderDir(t *testing.T) {
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fi, err := os.Stat("testdata")
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if err != nil {
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t.Fatal(err)
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}
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h, err := FileInfoHeader(fi, "")
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if err != nil {
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t.Fatalf("FileInfoHeader: %v", err)
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}
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if g, e := h.Name, "testdata/"; g != e {
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t.Errorf("Name = %q; want %q", g, e)
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}
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// Ignoring c_ISGID for golang.org/issue/4867
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if g, e := h.Mode&^c_ISGID, int64(fi.Mode().Perm())|c_ISDIR; g != e {
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t.Errorf("Mode = %#o; want %#o", g, e)
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}
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if g, e := h.Size, int64(0); g != e {
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t.Errorf("Size = %v; want %v", g, e)
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}
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if g, e := h.ModTime, fi.ModTime(); !g.Equal(e) {
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t.Errorf("ModTime = %v; want %v", g, e)
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}
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}
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func TestFileInfoHeaderSymlink(t *testing.T) {
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h, err := FileInfoHeader(symlink{}, "some-target")
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if err != nil {
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t.Fatal(err)
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}
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if g, e := h.Name, "some-symlink"; g != e {
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t.Errorf("Name = %q; want %q", g, e)
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}
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if g, e := h.Linkname, "some-target"; g != e {
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t.Errorf("Linkname = %q; want %q", g, e)
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}
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}
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type symlink struct{}
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func (symlink) Name() string { return "some-symlink" }
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func (symlink) Size() int64 { return 0 }
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func (symlink) Mode() os.FileMode { return os.ModeSymlink }
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func (symlink) ModTime() time.Time { return time.Time{} }
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func (symlink) IsDir() bool { return false }
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func (symlink) Sys() interface{} { return nil }
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func TestRoundTrip(t *testing.T) {
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data := []byte("some file contents")
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var b bytes.Buffer
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tw := NewWriter(&b)
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hdr := &Header{
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Name: "file.txt",
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Uid: 1 << 21, // too big for 8 octal digits
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Size: int64(len(data)),
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ModTime: time.Now(),
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}
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// tar only supports second precision.
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hdr.ModTime = hdr.ModTime.Add(-time.Duration(hdr.ModTime.Nanosecond()) * time.Nanosecond)
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if err := tw.WriteHeader(hdr); err != nil {
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t.Fatalf("tw.WriteHeader: %v", err)
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}
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if _, err := tw.Write(data); err != nil {
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t.Fatalf("tw.Write: %v", err)
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}
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if err := tw.Close(); err != nil {
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t.Fatalf("tw.Close: %v", err)
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}
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// Read it back.
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tr := NewReader(&b)
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rHdr, err := tr.Next()
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if err != nil {
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t.Fatalf("tr.Next: %v", err)
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}
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if !reflect.DeepEqual(rHdr, hdr) {
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t.Errorf("Header mismatch.\n got %+v\nwant %+v", rHdr, hdr)
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}
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rData, err := ioutil.ReadAll(tr)
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if err != nil {
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t.Fatalf("Read: %v", err)
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}
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if !bytes.Equal(rData, data) {
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t.Errorf("Data mismatch.\n got %q\nwant %q", rData, data)
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}
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}
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type headerRoundTripTest struct {
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h *Header
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fm os.FileMode
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}
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func TestHeaderRoundTrip(t *testing.T) {
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golden := []headerRoundTripTest{
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// regular file.
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{
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h: &Header{
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Name: "test.txt",
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Mode: 0644 | c_ISREG,
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Size: 12,
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ModTime: time.Unix(1360600916, 0),
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Typeflag: TypeReg,
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},
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fm: 0644,
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},
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// hard link.
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{
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h: &Header{
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Name: "hard.txt",
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Mode: 0644 | c_ISLNK,
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Size: 0,
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ModTime: time.Unix(1360600916, 0),
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Typeflag: TypeLink,
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},
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fm: 0644 | os.ModeSymlink,
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},
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// symbolic link.
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{
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h: &Header{
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Name: "link.txt",
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Mode: 0777 | c_ISLNK,
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Size: 0,
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ModTime: time.Unix(1360600852, 0),
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Typeflag: TypeSymlink,
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},
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fm: 0777 | os.ModeSymlink,
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},
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// character device node.
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{
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h: &Header{
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Name: "dev/null",
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Mode: 0666 | c_ISCHR,
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Size: 0,
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ModTime: time.Unix(1360578951, 0),
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Typeflag: TypeChar,
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},
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fm: 0666 | os.ModeDevice | os.ModeCharDevice,
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},
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// block device node.
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{
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h: &Header{
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Name: "dev/sda",
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Mode: 0660 | c_ISBLK,
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Size: 0,
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ModTime: time.Unix(1360578954, 0),
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Typeflag: TypeBlock,
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},
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fm: 0660 | os.ModeDevice,
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},
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// directory.
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{
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h: &Header{
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Name: "dir/",
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Mode: 0755 | c_ISDIR,
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Size: 0,
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ModTime: time.Unix(1360601116, 0),
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Typeflag: TypeDir,
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},
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fm: 0755 | os.ModeDir,
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},
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// fifo node.
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{
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h: &Header{
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Name: "dev/initctl",
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Mode: 0600 | c_ISFIFO,
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Size: 0,
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ModTime: time.Unix(1360578949, 0),
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Typeflag: TypeFifo,
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},
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fm: 0600 | os.ModeNamedPipe,
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},
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// setuid.
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{
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h: &Header{
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Name: "bin/su",
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Mode: 0755 | c_ISREG | c_ISUID,
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Size: 23232,
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ModTime: time.Unix(1355405093, 0),
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Typeflag: TypeReg,
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},
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fm: 0755 | os.ModeSetuid,
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},
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// setguid.
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{
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h: &Header{
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Name: "group.txt",
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Mode: 0750 | c_ISREG | c_ISGID,
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Size: 0,
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ModTime: time.Unix(1360602346, 0),
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Typeflag: TypeReg,
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},
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fm: 0750 | os.ModeSetgid,
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},
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// sticky.
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{
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h: &Header{
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Name: "sticky.txt",
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Mode: 0600 | c_ISREG | c_ISVTX,
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Size: 7,
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ModTime: time.Unix(1360602540, 0),
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Typeflag: TypeReg,
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},
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fm: 0600 | os.ModeSticky,
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},
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}
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for i, g := range golden {
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fi := g.h.FileInfo()
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h2, err := FileInfoHeader(fi, "")
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if err != nil {
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t.Error(err)
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continue
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}
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if strings.Contains(fi.Name(), "/") {
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t.Errorf("FileInfo of %q contains slash: %q", g.h.Name, fi.Name())
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}
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name := path.Base(g.h.Name)
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if fi.IsDir() {
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name += "/"
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}
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if got, want := h2.Name, name; got != want {
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t.Errorf("i=%d: Name: got %v, want %v", i, got, want)
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}
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if got, want := h2.Size, g.h.Size; got != want {
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t.Errorf("i=%d: Size: got %v, want %v", i, got, want)
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}
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if got, want := h2.Mode, g.h.Mode; got != want {
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t.Errorf("i=%d: Mode: got %o, want %o", i, got, want)
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}
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if got, want := fi.Mode(), g.fm; got != want {
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t.Errorf("i=%d: fi.Mode: got %o, want %o", i, got, want)
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}
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if got, want := h2.ModTime, g.h.ModTime; got != want {
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t.Errorf("i=%d: ModTime: got %v, want %v", i, got, want)
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}
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if sysh, ok := fi.Sys().(*Header); !ok || sysh != g.h {
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t.Errorf("i=%d: Sys didn't return original *Header", i)
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}
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}
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}
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