| // Copyright 2012 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 tar |
| |
| import ( |
| "bytes" |
| "internal/testenv" |
| "io" |
| "io/ioutil" |
| "math" |
| "os" |
| "path" |
| "path/filepath" |
| "reflect" |
| "strings" |
| "testing" |
| "time" |
| ) |
| |
| func equalSparseEntries(x, y []SparseEntry) bool { |
| return (len(x) == 0 && len(y) == 0) || reflect.DeepEqual(x, y) |
| } |
| |
| func TestSparseEntries(t *testing.T) { |
| vectors := []struct { |
| in []SparseEntry |
| size int64 |
| |
| wantValid bool // Result of validateSparseEntries |
| wantAligned []SparseEntry // Result of alignSparseEntries |
| wantInverted []SparseEntry // Result of invertSparseEntries |
| }{{ |
| in: []SparseEntry{}, size: 0, |
| wantValid: true, |
| wantInverted: []SparseEntry{{0, 0}}, |
| }, { |
| in: []SparseEntry{}, size: 5000, |
| wantValid: true, |
| wantInverted: []SparseEntry{{0, 5000}}, |
| }, { |
| in: []SparseEntry{{0, 5000}}, size: 5000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{0, 5000}}, |
| wantInverted: []SparseEntry{{5000, 0}}, |
| }, { |
| in: []SparseEntry{{1000, 4000}}, size: 5000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{1024, 3976}}, |
| wantInverted: []SparseEntry{{0, 1000}, {5000, 0}}, |
| }, { |
| in: []SparseEntry{{0, 3000}}, size: 5000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{0, 2560}}, |
| wantInverted: []SparseEntry{{3000, 2000}}, |
| }, { |
| in: []SparseEntry{{3000, 2000}}, size: 5000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{3072, 1928}}, |
| wantInverted: []SparseEntry{{0, 3000}, {5000, 0}}, |
| }, { |
| in: []SparseEntry{{2000, 2000}}, size: 5000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{2048, 1536}}, |
| wantInverted: []SparseEntry{{0, 2000}, {4000, 1000}}, |
| }, { |
| in: []SparseEntry{{0, 2000}, {8000, 2000}}, size: 10000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{0, 1536}, {8192, 1808}}, |
| wantInverted: []SparseEntry{{2000, 6000}, {10000, 0}}, |
| }, { |
| in: []SparseEntry{{0, 2000}, {2000, 2000}, {4000, 0}, {4000, 3000}, {7000, 1000}, {8000, 0}, {8000, 2000}}, size: 10000, |
| wantValid: true, |
| wantAligned: []SparseEntry{{0, 1536}, {2048, 1536}, {4096, 2560}, {7168, 512}, {8192, 1808}}, |
| wantInverted: []SparseEntry{{10000, 0}}, |
| }, { |
| in: []SparseEntry{{0, 0}, {1000, 0}, {2000, 0}, {3000, 0}, {4000, 0}, {5000, 0}}, size: 5000, |
| wantValid: true, |
| wantInverted: []SparseEntry{{0, 5000}}, |
| }, { |
| in: []SparseEntry{{1, 0}}, size: 0, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{-1, 0}}, size: 100, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{0, -1}}, size: 100, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{0, 0}}, size: -100, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{math.MaxInt64, 3}, {6, -5}}, size: 35, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{1, 3}, {6, -5}}, size: 35, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{math.MaxInt64, math.MaxInt64}}, size: math.MaxInt64, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{3, 3}}, size: 5, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{2, 0}, {1, 0}, {0, 0}}, size: 3, |
| wantValid: false, |
| }, { |
| in: []SparseEntry{{1, 3}, {2, 2}}, size: 10, |
| wantValid: false, |
| }} |
| |
| for i, v := range vectors { |
| gotValid := validateSparseEntries(v.in, v.size) |
| if gotValid != v.wantValid { |
| t.Errorf("test %d, validateSparseEntries() = %v, want %v", i, gotValid, v.wantValid) |
| } |
| if !v.wantValid { |
| continue |
| } |
| gotAligned := alignSparseEntries(append([]SparseEntry{}, v.in...), v.size) |
| if !equalSparseEntries(gotAligned, v.wantAligned) { |
| t.Errorf("test %d, alignSparseEntries():\ngot %v\nwant %v", i, gotAligned, v.wantAligned) |
| } |
| gotInverted := invertSparseEntries(append([]SparseEntry{}, v.in...), v.size) |
| if !equalSparseEntries(gotInverted, v.wantInverted) { |
| t.Errorf("test %d, inverseSparseEntries():\ngot %v\nwant %v", i, gotInverted, v.wantInverted) |
| } |
| } |
| } |
| |
| func TestFileInfoHeader(t *testing.T) { |
| fi, err := os.Stat("testdata/small.txt") |
| if err != nil { |
| t.Fatal(err) |
| } |
| h, err := FileInfoHeader(fi, "") |
| if err != nil { |
| t.Fatalf("FileInfoHeader: %v", err) |
| } |
| if g, e := h.Name, "small.txt"; g != e { |
| t.Errorf("Name = %q; want %q", g, e) |
| } |
| if g, e := h.Mode, int64(fi.Mode().Perm()); g != e { |
| t.Errorf("Mode = %#o; want %#o", g, e) |
| } |
| if g, e := h.Size, int64(5); g != e { |
| t.Errorf("Size = %v; want %v", g, e) |
| } |
| if g, e := h.ModTime, fi.ModTime(); !g.Equal(e) { |
| t.Errorf("ModTime = %v; want %v", g, e) |
| } |
| // FileInfoHeader should error when passing nil FileInfo |
| if _, err := FileInfoHeader(nil, ""); err == nil { |
| t.Fatalf("Expected error when passing nil to FileInfoHeader") |
| } |
| } |
| |
| func TestFileInfoHeaderDir(t *testing.T) { |
| fi, err := os.Stat("testdata") |
| if err != nil { |
| t.Fatal(err) |
| } |
| h, err := FileInfoHeader(fi, "") |
| if err != nil { |
| t.Fatalf("FileInfoHeader: %v", err) |
| } |
| if g, e := h.Name, "testdata/"; g != e { |
| t.Errorf("Name = %q; want %q", g, e) |
| } |
| // Ignoring c_ISGID for golang.org/issue/4867 |
| if g, e := h.Mode&^c_ISGID, int64(fi.Mode().Perm()); g != e { |
| t.Errorf("Mode = %#o; want %#o", g, e) |
| } |
| if g, e := h.Size, int64(0); g != e { |
| t.Errorf("Size = %v; want %v", g, e) |
| } |
| if g, e := h.ModTime, fi.ModTime(); !g.Equal(e) { |
| t.Errorf("ModTime = %v; want %v", g, e) |
| } |
| } |
| |
| func TestFileInfoHeaderSymlink(t *testing.T) { |
| testenv.MustHaveSymlink(t) |
| |
| tmpdir, err := ioutil.TempDir("", "TestFileInfoHeaderSymlink") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| |
| link := filepath.Join(tmpdir, "link") |
| target := tmpdir |
| err = os.Symlink(target, link) |
| if err != nil { |
| t.Fatal(err) |
| } |
| fi, err := os.Lstat(link) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| h, err := FileInfoHeader(fi, target) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if g, e := h.Name, fi.Name(); g != e { |
| t.Errorf("Name = %q; want %q", g, e) |
| } |
| if g, e := h.Linkname, target; g != e { |
| t.Errorf("Linkname = %q; want %q", g, e) |
| } |
| if g, e := h.Typeflag, byte(TypeSymlink); g != e { |
| t.Errorf("Typeflag = %v; want %v", g, e) |
| } |
| } |
| |
| func TestRoundTrip(t *testing.T) { |
| data := []byte("some file contents") |
| |
| var b bytes.Buffer |
| tw := NewWriter(&b) |
| hdr := &Header{ |
| Name: "file.txt", |
| Uid: 1 << 21, // too big for 8 octal digits |
| Size: int64(len(data)), |
| // AddDate to strip monotonic clock reading, |
| // and Round to discard sub-second precision, |
| // both of which are not included in the tar header |
| // and would otherwise break the round-trip check |
| // below. |
| ModTime: time.Now().AddDate(0, 0, 0).Round(1 * time.Second), |
| Format: FormatPAX, |
| } |
| if err := tw.WriteHeader(hdr); err != nil { |
| t.Fatalf("tw.WriteHeader: %v", err) |
| } |
| if _, err := tw.Write(data); err != nil { |
| t.Fatalf("tw.Write: %v", err) |
| } |
| if err := tw.Close(); err != nil { |
| t.Fatalf("tw.Close: %v", err) |
| } |
| |
| // Read it back. |
| tr := NewReader(&b) |
| rHdr, err := tr.Next() |
| if err != nil { |
| t.Fatalf("tr.Next: %v", err) |
| } |
| if !reflect.DeepEqual(rHdr, hdr) { |
| t.Errorf("Header mismatch.\n got %+v\nwant %+v", rHdr, hdr) |
| } |
| rData, err := ioutil.ReadAll(tr) |
| if err != nil { |
| t.Fatalf("Read: %v", err) |
| } |
| if !bytes.Equal(rData, data) { |
| t.Errorf("Data mismatch.\n got %q\nwant %q", rData, data) |
| } |
| } |
| |
| type headerRoundTripTest struct { |
| h *Header |
| fm os.FileMode |
| } |
| |
| func TestHeaderRoundTrip(t *testing.T) { |
| vectors := []headerRoundTripTest{{ |
| // regular file. |
| h: &Header{ |
| Name: "test.txt", |
| Mode: 0644, |
| Size: 12, |
| ModTime: time.Unix(1360600916, 0), |
| Typeflag: TypeReg, |
| }, |
| fm: 0644, |
| }, { |
| // symbolic link. |
| h: &Header{ |
| Name: "link.txt", |
| Mode: 0777, |
| Size: 0, |
| ModTime: time.Unix(1360600852, 0), |
| Typeflag: TypeSymlink, |
| }, |
| fm: 0777 | os.ModeSymlink, |
| }, { |
| // character device node. |
| h: &Header{ |
| Name: "dev/null", |
| Mode: 0666, |
| Size: 0, |
| ModTime: time.Unix(1360578951, 0), |
| Typeflag: TypeChar, |
| }, |
| fm: 0666 | os.ModeDevice | os.ModeCharDevice, |
| }, { |
| // block device node. |
| h: &Header{ |
| Name: "dev/sda", |
| Mode: 0660, |
| Size: 0, |
| ModTime: time.Unix(1360578954, 0), |
| Typeflag: TypeBlock, |
| }, |
| fm: 0660 | os.ModeDevice, |
| }, { |
| // directory. |
| h: &Header{ |
| Name: "dir/", |
| Mode: 0755, |
| Size: 0, |
| ModTime: time.Unix(1360601116, 0), |
| Typeflag: TypeDir, |
| }, |
| fm: 0755 | os.ModeDir, |
| }, { |
| // fifo node. |
| h: &Header{ |
| Name: "dev/initctl", |
| Mode: 0600, |
| Size: 0, |
| ModTime: time.Unix(1360578949, 0), |
| Typeflag: TypeFifo, |
| }, |
| fm: 0600 | os.ModeNamedPipe, |
| }, { |
| // setuid. |
| h: &Header{ |
| Name: "bin/su", |
| Mode: 0755 | c_ISUID, |
| Size: 23232, |
| ModTime: time.Unix(1355405093, 0), |
| Typeflag: TypeReg, |
| }, |
| fm: 0755 | os.ModeSetuid, |
| }, { |
| // setguid. |
| h: &Header{ |
| Name: "group.txt", |
| Mode: 0750 | c_ISGID, |
| Size: 0, |
| ModTime: time.Unix(1360602346, 0), |
| Typeflag: TypeReg, |
| }, |
| fm: 0750 | os.ModeSetgid, |
| }, { |
| // sticky. |
| h: &Header{ |
| Name: "sticky.txt", |
| Mode: 0600 | c_ISVTX, |
| Size: 7, |
| ModTime: time.Unix(1360602540, 0), |
| Typeflag: TypeReg, |
| }, |
| fm: 0600 | os.ModeSticky, |
| }, { |
| // hard link. |
| h: &Header{ |
| Name: "hard.txt", |
| Mode: 0644, |
| Size: 0, |
| Linkname: "file.txt", |
| ModTime: time.Unix(1360600916, 0), |
| Typeflag: TypeLink, |
| }, |
| fm: 0644, |
| }, { |
| // More information. |
| h: &Header{ |
| Name: "info.txt", |
| Mode: 0600, |
| Size: 0, |
| Uid: 1000, |
| Gid: 1000, |
| ModTime: time.Unix(1360602540, 0), |
| Uname: "slartibartfast", |
| Gname: "users", |
| Typeflag: TypeReg, |
| }, |
| fm: 0600, |
| }} |
| |
| for i, v := range vectors { |
| fi := v.h.FileInfo() |
| h2, err := FileInfoHeader(fi, "") |
| if err != nil { |
| t.Error(err) |
| continue |
| } |
| if strings.Contains(fi.Name(), "/") { |
| t.Errorf("FileInfo of %q contains slash: %q", v.h.Name, fi.Name()) |
| } |
| name := path.Base(v.h.Name) |
| if fi.IsDir() { |
| name += "/" |
| } |
| if got, want := h2.Name, name; got != want { |
| t.Errorf("i=%d: Name: got %v, want %v", i, got, want) |
| } |
| if got, want := h2.Size, v.h.Size; got != want { |
| t.Errorf("i=%d: Size: got %v, want %v", i, got, want) |
| } |
| if got, want := h2.Uid, v.h.Uid; got != want { |
| t.Errorf("i=%d: Uid: got %d, want %d", i, got, want) |
| } |
| if got, want := h2.Gid, v.h.Gid; got != want { |
| t.Errorf("i=%d: Gid: got %d, want %d", i, got, want) |
| } |
| if got, want := h2.Uname, v.h.Uname; got != want { |
| t.Errorf("i=%d: Uname: got %q, want %q", i, got, want) |
| } |
| if got, want := h2.Gname, v.h.Gname; got != want { |
| t.Errorf("i=%d: Gname: got %q, want %q", i, got, want) |
| } |
| if got, want := h2.Linkname, v.h.Linkname; got != want { |
| t.Errorf("i=%d: Linkname: got %v, want %v", i, got, want) |
| } |
| if got, want := h2.Typeflag, v.h.Typeflag; got != want { |
| t.Logf("%#v %#v", v.h, fi.Sys()) |
| t.Errorf("i=%d: Typeflag: got %q, want %q", i, got, want) |
| } |
| if got, want := h2.Mode, v.h.Mode; got != want { |
| t.Errorf("i=%d: Mode: got %o, want %o", i, got, want) |
| } |
| if got, want := fi.Mode(), v.fm; got != want { |
| t.Errorf("i=%d: fi.Mode: got %o, want %o", i, got, want) |
| } |
| if got, want := h2.AccessTime, v.h.AccessTime; got != want { |
| t.Errorf("i=%d: AccessTime: got %v, want %v", i, got, want) |
| } |
| if got, want := h2.ChangeTime, v.h.ChangeTime; got != want { |
| t.Errorf("i=%d: ChangeTime: got %v, want %v", i, got, want) |
| } |
| if got, want := h2.ModTime, v.h.ModTime; got != want { |
| t.Errorf("i=%d: ModTime: got %v, want %v", i, got, want) |
| } |
| if sysh, ok := fi.Sys().(*Header); !ok || sysh != v.h { |
| t.Errorf("i=%d: Sys didn't return original *Header", i) |
| } |
| } |
| } |
| |
| func TestHeaderAllowedFormats(t *testing.T) { |
| vectors := []struct { |
| header *Header // Input header |
| paxHdrs map[string]string // Expected PAX headers that may be needed |
| formats Format // Expected formats that can encode the header |
| }{{ |
| header: &Header{}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Size: 077777777777}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Size: 077777777777, Format: FormatUSTAR}, |
| formats: FormatUSTAR, |
| }, { |
| header: &Header{Size: 077777777777, Format: FormatPAX}, |
| formats: FormatUSTAR | FormatPAX, |
| }, { |
| header: &Header{Size: 077777777777, Format: FormatGNU}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Size: 077777777777 + 1}, |
| paxHdrs: map[string]string{paxSize: "8589934592"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Size: 077777777777 + 1, Format: FormatPAX}, |
| paxHdrs: map[string]string{paxSize: "8589934592"}, |
| formats: FormatPAX, |
| }, { |
| header: &Header{Size: 077777777777 + 1, Format: FormatGNU}, |
| paxHdrs: map[string]string{paxSize: "8589934592"}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Mode: 07777777}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Mode: 07777777 + 1}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Devmajor: -123}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Devmajor: 1<<56 - 1}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Devmajor: 1 << 56}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{Devmajor: -1 << 56}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Devmajor: -1<<56 - 1}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{Name: "用戶名", Devmajor: -1 << 56}, |
| formats: FormatGNU, |
| }, { |
| header: &Header{Size: math.MaxInt64}, |
| paxHdrs: map[string]string{paxSize: "9223372036854775807"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Size: math.MinInt64}, |
| paxHdrs: map[string]string{paxSize: "-9223372036854775808"}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{Uname: "0123456789abcdef0123456789abcdef"}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Uname: "0123456789abcdef0123456789abcdefx"}, |
| paxHdrs: map[string]string{paxUname: "0123456789abcdef0123456789abcdefx"}, |
| formats: FormatPAX, |
| }, { |
| header: &Header{Name: "foobar"}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Name: strings.Repeat("a", nameSize)}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Name: strings.Repeat("a", nameSize+1)}, |
| paxHdrs: map[string]string{paxPath: strings.Repeat("a", nameSize+1)}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Linkname: "用戶名"}, |
| paxHdrs: map[string]string{paxLinkpath: "用戶名"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Linkname: strings.Repeat("用戶名\x00", nameSize)}, |
| paxHdrs: map[string]string{paxLinkpath: strings.Repeat("用戶名\x00", nameSize)}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{Linkname: "\x00hello"}, |
| paxHdrs: map[string]string{paxLinkpath: "\x00hello"}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{Uid: 07777777}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Uid: 07777777 + 1}, |
| paxHdrs: map[string]string{paxUid: "2097152"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Xattrs: nil}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{Xattrs: map[string]string{"foo": "bar"}}, |
| paxHdrs: map[string]string{paxXattr + "foo": "bar"}, |
| formats: FormatPAX, |
| }, { |
| header: &Header{Xattrs: map[string]string{"用戶名": "\x00hello"}}, |
| paxHdrs: map[string]string{paxXattr + "用戶名": "\x00hello"}, |
| formats: FormatPAX, |
| }, { |
| header: &Header{Xattrs: map[string]string{"foo=bar": "baz"}}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{Xattrs: map[string]string{"foo": ""}}, |
| formats: FormatUnknown, |
| }, { |
| header: &Header{ModTime: time.Unix(0, 0)}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{ModTime: time.Unix(077777777777, 0)}, |
| formats: FormatUSTAR | FormatPAX | FormatGNU, |
| }, { |
| header: &Header{ModTime: time.Unix(077777777777+1, 0)}, |
| paxHdrs: map[string]string{paxMtime: "8589934592"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{ModTime: time.Unix(math.MaxInt64, 0)}, |
| paxHdrs: map[string]string{paxMtime: "9223372036854775807"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{ModTime: time.Unix(-1, 0)}, |
| paxHdrs: map[string]string{paxMtime: "-1"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{ModTime: time.Unix(-1, 500)}, |
| paxHdrs: map[string]string{paxMtime: "-0.9999995"}, |
| formats: FormatPAX, |
| }, { |
| header: &Header{AccessTime: time.Unix(0, 0)}, |
| paxHdrs: map[string]string{paxAtime: "0"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{AccessTime: time.Unix(-123, 0)}, |
| paxHdrs: map[string]string{paxAtime: "-123"}, |
| formats: FormatPAX | FormatGNU, |
| }, { |
| header: &Header{ChangeTime: time.Unix(123, 456)}, |
| paxHdrs: map[string]string{paxCtime: "123.000000456"}, |
| formats: FormatPAX, |
| }} |
| |
| for i, v := range vectors { |
| formats, paxHdrs := v.header.allowedFormats() |
| if formats != v.formats { |
| t.Errorf("test %d, allowedFormats(...): got %v, want %v", i, formats, v.formats) |
| } |
| if formats&FormatPAX > 0 && !reflect.DeepEqual(paxHdrs, v.paxHdrs) && !(len(paxHdrs) == 0 && len(v.paxHdrs) == 0) { |
| t.Errorf("test %d, allowedFormats(...):\ngot %v\nwant %s", i, paxHdrs, v.paxHdrs) |
| } |
| } |
| } |
| |
| func Benchmark(b *testing.B) { |
| type file struct { |
| hdr *Header |
| body []byte |
| } |
| |
| vectors := []struct { |
| label string |
| files []file |
| }{{ |
| "USTAR", |
| []file{{ |
| &Header{Name: "bar", Mode: 0640, Size: int64(3)}, |
| []byte("foo"), |
| }, { |
| &Header{Name: "world", Mode: 0640, Size: int64(5)}, |
| []byte("hello"), |
| }}, |
| }, { |
| "GNU", |
| []file{{ |
| &Header{Name: "bar", Mode: 0640, Size: int64(3), Devmajor: -1}, |
| []byte("foo"), |
| }, { |
| &Header{Name: "world", Mode: 0640, Size: int64(5), Devmajor: -1}, |
| []byte("hello"), |
| }}, |
| }, { |
| "PAX", |
| []file{{ |
| &Header{Name: "bar", Mode: 0640, Size: int64(3), Xattrs: map[string]string{"foo": "bar"}}, |
| []byte("foo"), |
| }, { |
| &Header{Name: "world", Mode: 0640, Size: int64(5), Xattrs: map[string]string{"foo": "bar"}}, |
| []byte("hello"), |
| }}, |
| }} |
| |
| b.Run("Writer", func(b *testing.B) { |
| for _, v := range vectors { |
| b.Run(v.label, func(b *testing.B) { |
| b.ReportAllocs() |
| for i := 0; i < b.N; i++ { |
| // Writing to ioutil.Discard because we want to |
| // test purely the writer code and not bring in disk performance into this. |
| tw := NewWriter(ioutil.Discard) |
| for _, file := range v.files { |
| if err := tw.WriteHeader(file.hdr); err != nil { |
| b.Errorf("unexpected WriteHeader error: %v", err) |
| } |
| if _, err := tw.Write(file.body); err != nil { |
| b.Errorf("unexpected Write error: %v", err) |
| } |
| } |
| if err := tw.Close(); err != nil { |
| b.Errorf("unexpected Close error: %v", err) |
| } |
| } |
| }) |
| } |
| }) |
| |
| b.Run("Reader", func(b *testing.B) { |
| for _, v := range vectors { |
| var buf bytes.Buffer |
| var r bytes.Reader |
| |
| // Write the archive to a byte buffer. |
| tw := NewWriter(&buf) |
| for _, file := range v.files { |
| tw.WriteHeader(file.hdr) |
| tw.Write(file.body) |
| } |
| tw.Close() |
| b.Run(v.label, func(b *testing.B) { |
| b.ReportAllocs() |
| // Read from the byte buffer. |
| for i := 0; i < b.N; i++ { |
| r.Reset(buf.Bytes()) |
| tr := NewReader(&r) |
| if _, err := tr.Next(); err != nil { |
| b.Errorf("unexpected Next error: %v", err) |
| } |
| if _, err := io.Copy(ioutil.Discard, tr); err != nil { |
| b.Errorf("unexpected Copy error : %v", err) |
| } |
| } |
| }) |
| } |
| }) |
| |
| } |
