1 // Copyright 2011 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
23 // TODO(adg): a more sophisticated test suite
25 type WriteTest struct {
32 var writeTests = []WriteTest{
35 Data: []byte("Rabbits, guinea pigs, gophers, marsupial rats, and quolls."),
41 Data: nil, // large data set in the test
47 Data: []byte("setuid file"),
49 Mode: 0755 | fs.ModeSetuid,
53 Data: []byte("setgid file"),
55 Mode: 0755 | fs.ModeSetgid,
59 Data: []byte("../link/target"),
61 Mode: 0755 | fs.ModeSymlink,
65 Data: []byte("device file"),
67 Mode: 0755 | fs.ModeDevice,
71 Data: []byte("char device file"),
73 Mode: 0755 | fs.ModeDevice | fs.ModeCharDevice,
77 func TestWriter(t *testing.T) {
78 largeData := make([]byte, 1<<17)
79 if _, err := rand.Read(largeData); err != nil {
80 t.Fatal("rand.Read failed:", err)
82 writeTests[1].Data = largeData
84 writeTests[1].Data = nil
88 buf := new(bytes.Buffer)
91 for _, wt := range writeTests {
95 if err := w.Close(); err != nil {
100 r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
104 for i, wt := range writeTests {
105 testReadFile(t, r.File[i], &wt)
109 // TestWriterComment is test for EOCD comment read/write.
110 func TestWriterComment(t *testing.T) {
111 var tests = []struct {
117 {strings.Repeat("a", uint16max), true},
118 {strings.Repeat("a", uint16max+1), false},
121 for _, test := range tests {
123 buf := new(bytes.Buffer)
125 if err := w.SetComment(test.comment); err != nil {
127 t.Fatalf("SetComment: unexpected error %v", err)
132 t.Fatalf("SetComment: unexpected success, want error")
136 if err := w.Close(); test.ok == (err != nil) {
140 if w.closed != test.ok {
141 t.Fatalf("Writer.closed: got %v, want %v", w.closed, test.ok)
144 // skip read test in failure cases
150 r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
154 if r.Comment != test.comment {
155 t.Fatalf("Reader.Comment: got %v, want %v", r.Comment, test.comment)
160 func TestWriterUTF8(t *testing.T) {
161 var utf8Tests = []struct {
169 comment: "in the world",
174 comment: "in the world",
179 comment: "in the world",
185 comment: "in the 世界",
190 comment: "in the 世界",
194 name: "the replacement rune is �",
195 comment: "the replacement rune is �",
199 // Name is Japanese encoded in Shift JIS.
200 name: "\x93\xfa\x96{\x8c\xea.txt",
201 comment: "in the 世界",
202 flags: 0x008, // UTF-8 must not be set
207 buf := new(bytes.Buffer)
210 for _, test := range utf8Tests {
213 Comment: test.comment,
214 NonUTF8: test.nonUTF8,
217 w, err := w.CreateHeader(h)
224 if err := w.Close(); err != nil {
229 r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
233 for i, test := range utf8Tests {
234 flags := r.File[i].Flags
235 if flags != test.flags {
236 t.Errorf("CreateHeader(name=%q comment=%q nonUTF8=%v): flags=%#x, want %#x", test.name, test.comment, test.nonUTF8, flags, test.flags)
241 func TestWriterTime(t *testing.T) {
245 Modified: time.Date(2017, 10, 31, 21, 11, 57, 0, timeZone(-7*time.Hour)),
248 if _, err := w.CreateHeader(h); err != nil {
249 t.Fatalf("unexpected CreateHeader error: %v", err)
251 if err := w.Close(); err != nil {
252 t.Fatalf("unexpected Close error: %v", err)
255 want, err := os.ReadFile("testdata/time-go.zip")
257 t.Fatalf("unexpected ReadFile error: %v", err)
259 if got := buf.Bytes(); !bytes.Equal(got, want) {
260 fmt.Printf("%x\n%x\n", got, want)
261 t.Error("contents of time-go.zip differ")
265 func TestWriterOffset(t *testing.T) {
266 largeData := make([]byte, 1<<17)
267 if _, err := rand.Read(largeData); err != nil {
268 t.Fatal("rand.Read failed:", err)
270 writeTests[1].Data = largeData
272 writeTests[1].Data = nil
276 buf := new(bytes.Buffer)
277 existingData := []byte{1, 2, 3, 1, 2, 3, 1, 2, 3}
278 n, _ := buf.Write(existingData)
280 w.SetOffset(int64(n))
282 for _, wt := range writeTests {
283 testCreate(t, w, &wt)
286 if err := w.Close(); err != nil {
291 r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
295 for i, wt := range writeTests {
296 testReadFile(t, r.File[i], &wt)
300 func TestWriterFlush(t *testing.T) {
302 w := NewWriter(struct{ io.Writer }{&buf})
303 _, err := w.Create("foo")
308 t.Fatalf("Unexpected %d bytes already in buffer", buf.Len())
310 if err := w.Flush(); err != nil {
314 t.Fatal("No bytes written after Flush")
318 func TestWriterDir(t *testing.T) {
319 w := NewWriter(io.Discard)
320 dw, err := w.Create("dir/")
324 if _, err := dw.Write(nil); err != nil {
325 t.Errorf("Write(nil) to directory: got %v, want nil", err)
327 if _, err := dw.Write([]byte("hello")); err == nil {
328 t.Error(`Write("hello") to directory: got nil error, want non-nil`)
332 func TestWriterDirAttributes(t *testing.T) {
335 if _, err := w.CreateHeader(&FileHeader{
338 CompressedSize64: 1234,
339 UncompressedSize64: 5678,
343 if err := w.Close(); err != nil {
349 binary.LittleEndian.PutUint32(sig[:], uint32(fileHeaderSignature))
351 idx := bytes.Index(b, sig[:])
353 t.Fatal("file header not found")
357 if !bytes.Equal(b[6:10], []byte{0, 0, 0, 0}) { // FileHeader.Flags: 0, FileHeader.Method: 0
358 t.Errorf("unexpected method and flags: %v", b[6:10])
361 if !bytes.Equal(b[14:26], make([]byte, 12)) { // FileHeader.{CRC32,CompressSize,UncompressedSize} all zero.
362 t.Errorf("unexpected crc, compress and uncompressed size to be 0 was: %v", b[14:26])
365 binary.LittleEndian.PutUint32(sig[:], uint32(dataDescriptorSignature))
366 if bytes.Contains(b, sig[:]) {
367 t.Error("there should be no data descriptor")
371 func TestWriterCopy(t *testing.T) {
373 buf := new(bytes.Buffer)
375 for _, wt := range writeTests {
376 testCreate(t, w, &wt)
378 if err := w.Close(); err != nil {
383 src, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
387 for i, wt := range writeTests {
388 testReadFile(t, src.File[i], &wt)
391 // make a new zip file copying the old compressed data.
392 buf2 := new(bytes.Buffer)
393 dst := NewWriter(buf2)
394 for _, f := range src.File {
395 if err := dst.Copy(f); err != nil {
399 if err := dst.Close(); err != nil {
403 // read the new one back
404 r, err := NewReader(bytes.NewReader(buf2.Bytes()), int64(buf2.Len()))
408 for i, wt := range writeTests {
409 testReadFile(t, r.File[i], &wt)
413 func TestWriterCreateRaw(t *testing.T) {
420 uncompressedSize uint64
421 compressedSize uint64
424 name: "small store w desc",
425 content: []byte("gophers"),
430 name: "small deflate wo desc",
431 content: bytes.Repeat([]byte("abcdefg"), 2048),
437 archive := new(bytes.Buffer)
438 w := NewWriter(archive)
440 for i := range files {
442 f.crc32 = crc32.ChecksumIEEE(f.content)
443 size := uint64(len(f.content))
444 f.uncompressedSize = size
445 f.compressedSize = size
447 var compressedContent []byte
448 if f.method == Deflate {
450 w, err := flate.NewWriter(&buf, flate.BestSpeed)
452 t.Fatalf("flate.NewWriter err = %v", err)
454 _, err = w.Write(f.content)
456 t.Fatalf("flate Write err = %v", err)
460 t.Fatalf("flate Writer.Close err = %v", err)
462 compressedContent = buf.Bytes()
463 f.compressedSize = uint64(len(compressedContent))
471 CompressedSize64: f.compressedSize,
472 UncompressedSize64: f.uncompressedSize,
474 w, err := w.CreateRaw(h)
478 if compressedContent != nil {
479 _, err = w.Write(compressedContent)
481 _, err = w.Write(f.content)
484 t.Fatalf("%s Write got %v; want nil", f.name, err)
488 if err := w.Close(); err != nil {
493 r, err := NewReader(bytes.NewReader(archive.Bytes()), int64(archive.Len()))
497 for i, want := range files {
499 if got.Name != want.name {
500 t.Errorf("got Name %s; want %s", got.Name, want.name)
502 if got.Method != want.method {
503 t.Errorf("%s: got Method %#x; want %#x", want.name, got.Method, want.method)
505 if got.Flags != want.flags {
506 t.Errorf("%s: got Flags %#x; want %#x", want.name, got.Flags, want.flags)
508 if got.CRC32 != want.crc32 {
509 t.Errorf("%s: got CRC32 %#x; want %#x", want.name, got.CRC32, want.crc32)
511 if got.CompressedSize64 != want.compressedSize {
512 t.Errorf("%s: got CompressedSize64 %d; want %d", want.name, got.CompressedSize64, want.compressedSize)
514 if got.UncompressedSize64 != want.uncompressedSize {
515 t.Errorf("%s: got UncompressedSize64 %d; want %d", want.name, got.UncompressedSize64, want.uncompressedSize)
520 t.Errorf("%s: Open err = %v", got.Name, err)
524 buf, err := io.ReadAll(r)
526 t.Errorf("%s: ReadAll err = %v", got.Name, err)
530 if !bytes.Equal(buf, want.content) {
531 t.Errorf("%v: ReadAll returned unexpected bytes", got.Name)
536 func testCreate(t *testing.T, w *Writer, wt *WriteTest) {
537 header := &FileHeader{
542 header.SetMode(wt.Mode)
544 f, err := w.CreateHeader(header)
548 _, err = f.Write(wt.Data)
554 func testReadFile(t *testing.T, f *File, wt *WriteTest) {
555 if f.Name != wt.Name {
556 t.Fatalf("File name: got %q, want %q", f.Name, wt.Name)
558 testFileMode(t, f, wt.Mode)
561 t.Fatalf("opening %s: %v", f.Name, err)
563 b, err := io.ReadAll(rc)
565 t.Fatalf("reading %s: %v", f.Name, err)
569 t.Fatalf("closing %s: %v", f.Name, err)
571 if !bytes.Equal(b, wt.Data) {
572 t.Errorf("File contents %q, want %q", b, wt.Data)
576 func BenchmarkCompressedZipGarbage(b *testing.B) {
577 bigBuf := bytes.Repeat([]byte("a"), 1<<20)
579 runOnce := func(buf *bytes.Buffer) {
582 for j := 0; j < 3; j++ {
583 w, _ := zw.CreateHeader(&FileHeader{
593 // Run once and then reset the timer.
594 // This effectively discards the very large initial flate setup cost,
595 // as well as the initialization of bigBuf.
596 runOnce(&bytes.Buffer{})
599 b.RunParallel(func(pb *testing.PB) {
607 func writeTestsToFS(tests []WriteTest) fs.FS {
608 fsys := fstest.MapFS{}
609 for _, wt := range tests {
610 fsys[wt.Name] = &fstest.MapFile{
618 func TestWriterAddFS(t *testing.T) {
619 buf := new(bytes.Buffer)
621 tests := []WriteTest{
624 Data: []byte("hello"),
628 Name: "subfolder/another.go",
629 Data: []byte("world"),
633 err := w.AddFS(writeTestsToFS(tests))
638 if err := w.Close(); err != nil {
643 r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
647 for i, wt := range tests {
648 testReadFile(t, r.File[i], &wt)