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-rw-r--r--src/archive/tar/writer_test.go1335
1 files changed, 1335 insertions, 0 deletions
diff --git a/src/archive/tar/writer_test.go b/src/archive/tar/writer_test.go
new file mode 100644
index 0000000..f6d75c5
--- /dev/null
+++ b/src/archive/tar/writer_test.go
@@ -0,0 +1,1335 @@
+// Copyright 2009 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"
+ "encoding/hex"
+ "errors"
+ "io"
+ "os"
+ "path"
+ "reflect"
+ "sort"
+ "strings"
+ "testing"
+ "testing/iotest"
+ "time"
+)
+
+func bytediff(a, b []byte) string {
+ const (
+ uniqueA = "- "
+ uniqueB = "+ "
+ identity = " "
+ )
+ var ss []string
+ sa := strings.Split(strings.TrimSpace(hex.Dump(a)), "\n")
+ sb := strings.Split(strings.TrimSpace(hex.Dump(b)), "\n")
+ for len(sa) > 0 && len(sb) > 0 {
+ if sa[0] == sb[0] {
+ ss = append(ss, identity+sa[0])
+ } else {
+ ss = append(ss, uniqueA+sa[0])
+ ss = append(ss, uniqueB+sb[0])
+ }
+ sa, sb = sa[1:], sb[1:]
+ }
+ for len(sa) > 0 {
+ ss = append(ss, uniqueA+sa[0])
+ sa = sa[1:]
+ }
+ for len(sb) > 0 {
+ ss = append(ss, uniqueB+sb[0])
+ sb = sb[1:]
+ }
+ return strings.Join(ss, "\n")
+}
+
+func TestWriter(t *testing.T) {
+ type (
+ testHeader struct { // WriteHeader(hdr) == wantErr
+ hdr Header
+ wantErr error
+ }
+ testWrite struct { // Write(str) == (wantCnt, wantErr)
+ str string
+ wantCnt int
+ wantErr error
+ }
+ testReadFrom struct { // ReadFrom(testFile{ops}) == (wantCnt, wantErr)
+ ops fileOps
+ wantCnt int64
+ wantErr error
+ }
+ testClose struct { // Close() == wantErr
+ wantErr error
+ }
+ testFnc any // testHeader | testWrite | testReadFrom | testClose
+ )
+
+ vectors := []struct {
+ file string // Optional filename of expected output
+ tests []testFnc
+ }{{
+ // The writer test file was produced with this command:
+ // tar (GNU tar) 1.26
+ // ln -s small.txt link.txt
+ // tar -b 1 --format=ustar -c -f writer.tar small.txt small2.txt link.txt
+ file: "testdata/writer.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "small.txt",
+ Size: 5,
+ Mode: 0640,
+ Uid: 73025,
+ Gid: 5000,
+ Uname: "dsymonds",
+ Gname: "eng",
+ ModTime: time.Unix(1246508266, 0),
+ }, nil},
+ testWrite{"Kilts", 5, nil},
+
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "small2.txt",
+ Size: 11,
+ Mode: 0640,
+ Uid: 73025,
+ Uname: "dsymonds",
+ Gname: "eng",
+ Gid: 5000,
+ ModTime: time.Unix(1245217492, 0),
+ }, nil},
+ testWrite{"Google.com\n", 11, nil},
+
+ testHeader{Header{
+ Typeflag: TypeSymlink,
+ Name: "link.txt",
+ Linkname: "small.txt",
+ Mode: 0777,
+ Uid: 1000,
+ Gid: 1000,
+ Uname: "strings",
+ Gname: "strings",
+ ModTime: time.Unix(1314603082, 0),
+ }, nil},
+ testWrite{"", 0, nil},
+
+ testClose{nil},
+ },
+ }, {
+ // The truncated test file was produced using these commands:
+ // dd if=/dev/zero bs=1048576 count=16384 > /tmp/16gig.txt
+ // tar -b 1 -c -f- /tmp/16gig.txt | dd bs=512 count=8 > writer-big.tar
+ file: "testdata/writer-big.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "tmp/16gig.txt",
+ Size: 16 << 30,
+ Mode: 0640,
+ Uid: 73025,
+ Gid: 5000,
+ Uname: "dsymonds",
+ Gname: "eng",
+ ModTime: time.Unix(1254699560, 0),
+ Format: FormatGNU,
+ }, nil},
+ },
+ }, {
+ // This truncated file was produced using this library.
+ // It was verified to work with GNU tar 1.27.1 and BSD tar 3.1.2.
+ // dd if=/dev/zero bs=1G count=16 >> writer-big-long.tar
+ // gnutar -xvf writer-big-long.tar
+ // bsdtar -xvf writer-big-long.tar
+ //
+ // This file is in PAX format.
+ file: "testdata/writer-big-long.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: strings.Repeat("longname/", 15) + "16gig.txt",
+ Size: 16 << 30,
+ Mode: 0644,
+ Uid: 1000,
+ Gid: 1000,
+ Uname: "guillaume",
+ Gname: "guillaume",
+ ModTime: time.Unix(1399583047, 0),
+ }, nil},
+ },
+ }, {
+ // This file was produced using GNU tar v1.17.
+ // gnutar -b 4 --format=ustar (longname/)*15 + file.txt
+ file: "testdata/ustar.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: strings.Repeat("longname/", 15) + "file.txt",
+ Size: 6,
+ Mode: 0644,
+ Uid: 501,
+ Gid: 20,
+ Uname: "shane",
+ Gname: "staff",
+ ModTime: time.Unix(1360135598, 0),
+ }, nil},
+ testWrite{"hello\n", 6, nil},
+ testClose{nil},
+ },
+ }, {
+ // This file was produced using GNU tar v1.26:
+ // echo "Slartibartfast" > file.txt
+ // ln file.txt hard.txt
+ // tar -b 1 --format=ustar -c -f hardlink.tar file.txt hard.txt
+ file: "testdata/hardlink.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "file.txt",
+ Size: 15,
+ Mode: 0644,
+ Uid: 1000,
+ Gid: 100,
+ Uname: "vbatts",
+ Gname: "users",
+ ModTime: time.Unix(1425484303, 0),
+ }, nil},
+ testWrite{"Slartibartfast\n", 15, nil},
+
+ testHeader{Header{
+ Typeflag: TypeLink,
+ Name: "hard.txt",
+ Linkname: "file.txt",
+ Mode: 0644,
+ Uid: 1000,
+ Gid: 100,
+ Uname: "vbatts",
+ Gname: "users",
+ ModTime: time.Unix(1425484303, 0),
+ }, nil},
+ testWrite{"", 0, nil},
+
+ testClose{nil},
+ },
+ }, {
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "bad-null.txt",
+ Xattrs: map[string]string{"null\x00null\x00": "fizzbuzz"},
+ }, headerError{}},
+ },
+ }, {
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "null\x00.txt",
+ }, headerError{}},
+ },
+ }, {
+ file: "testdata/pax-records.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "file",
+ Uname: strings.Repeat("long", 10),
+ PAXRecords: map[string]string{
+ "path": "FILE", // Should be ignored
+ "GNU.sparse.map": "0,0", // Should be ignored
+ "comment": "Hello, 世界",
+ "GOLANG.pkg": "tar",
+ },
+ }, nil},
+ testClose{nil},
+ },
+ }, {
+ // Craft a theoretically valid PAX archive with global headers.
+ // The GNU and BSD tar tools do not parse these the same way.
+ //
+ // BSD tar v3.1.2 parses and ignores all global headers;
+ // the behavior is verified by researching the source code.
+ //
+ // $ bsdtar -tvf pax-global-records.tar
+ // ---------- 0 0 0 0 Dec 31 1969 file1
+ // ---------- 0 0 0 0 Dec 31 1969 file2
+ // ---------- 0 0 0 0 Dec 31 1969 file3
+ // ---------- 0 0 0 0 May 13 2014 file4
+ //
+ // GNU tar v1.27.1 applies global headers to subsequent records,
+ // but does not do the following properly:
+ // * It does not treat an empty record as deletion.
+ // * It does not use subsequent global headers to update previous ones.
+ //
+ // $ gnutar -tvf pax-global-records.tar
+ // ---------- 0/0 0 2017-07-13 19:40 global1
+ // ---------- 0/0 0 2017-07-13 19:40 file2
+ // gnutar: Substituting `.' for empty member name
+ // ---------- 0/0 0 1969-12-31 16:00
+ // gnutar: Substituting `.' for empty member name
+ // ---------- 0/0 0 2014-05-13 09:53
+ //
+ // According to the PAX specification, this should have been the result:
+ // ---------- 0/0 0 2017-07-13 19:40 global1
+ // ---------- 0/0 0 2017-07-13 19:40 file2
+ // ---------- 0/0 0 2017-07-13 19:40 file3
+ // ---------- 0/0 0 2014-05-13 09:53 file4
+ file: "testdata/pax-global-records.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeXGlobalHeader,
+ PAXRecords: map[string]string{"path": "global1", "mtime": "1500000000.0"},
+ }, nil},
+ testHeader{Header{
+ Typeflag: TypeReg, Name: "file1",
+ }, nil},
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "file2",
+ PAXRecords: map[string]string{"path": "file2"},
+ }, nil},
+ testHeader{Header{
+ Typeflag: TypeXGlobalHeader,
+ PAXRecords: map[string]string{"path": ""}, // Should delete "path", but keep "mtime"
+ }, nil},
+ testHeader{Header{
+ Typeflag: TypeReg, Name: "file3",
+ }, nil},
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "file4",
+ ModTime: time.Unix(1400000000, 0),
+ PAXRecords: map[string]string{"mtime": "1400000000"},
+ }, nil},
+ testClose{nil},
+ },
+ }, {
+ file: "testdata/gnu-utf8.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹",
+ Mode: 0644,
+ Uid: 1000, Gid: 1000,
+ Uname: "☺",
+ Gname: "⚹",
+ ModTime: time.Unix(0, 0),
+ Format: FormatGNU,
+ }, nil},
+ testClose{nil},
+ },
+ }, {
+ file: "testdata/gnu-not-utf8.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "hi\x80\x81\x82\x83bye",
+ Mode: 0644,
+ Uid: 1000,
+ Gid: 1000,
+ Uname: "rawr",
+ Gname: "dsnet",
+ ModTime: time.Unix(0, 0),
+ Format: FormatGNU,
+ }, nil},
+ testClose{nil},
+ },
+ // TODO(dsnet): Re-enable this test when adding sparse support.
+ // See https://golang.org/issue/22735
+ /*
+ }, {
+ file: "testdata/gnu-nil-sparse-data.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeGNUSparse,
+ Name: "sparse.db",
+ Size: 1000,
+ SparseHoles: []sparseEntry{{Offset: 1000, Length: 0}},
+ }, nil},
+ testWrite{strings.Repeat("0123456789", 100), 1000, nil},
+ testClose{},
+ },
+ }, {
+ file: "testdata/gnu-nil-sparse-hole.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeGNUSparse,
+ Name: "sparse.db",
+ Size: 1000,
+ SparseHoles: []sparseEntry{{Offset: 0, Length: 1000}},
+ }, nil},
+ testWrite{strings.Repeat("\x00", 1000), 1000, nil},
+ testClose{},
+ },
+ }, {
+ file: "testdata/pax-nil-sparse-data.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "sparse.db",
+ Size: 1000,
+ SparseHoles: []sparseEntry{{Offset: 1000, Length: 0}},
+ }, nil},
+ testWrite{strings.Repeat("0123456789", 100), 1000, nil},
+ testClose{},
+ },
+ }, {
+ file: "testdata/pax-nil-sparse-hole.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "sparse.db",
+ Size: 1000,
+ SparseHoles: []sparseEntry{{Offset: 0, Length: 1000}},
+ }, nil},
+ testWrite{strings.Repeat("\x00", 1000), 1000, nil},
+ testClose{},
+ },
+ }, {
+ file: "testdata/gnu-sparse-big.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeGNUSparse,
+ Name: "gnu-sparse",
+ Size: 6e10,
+ SparseHoles: []sparseEntry{
+ {Offset: 0e10, Length: 1e10 - 100},
+ {Offset: 1e10, Length: 1e10 - 100},
+ {Offset: 2e10, Length: 1e10 - 100},
+ {Offset: 3e10, Length: 1e10 - 100},
+ {Offset: 4e10, Length: 1e10 - 100},
+ {Offset: 5e10, Length: 1e10 - 100},
+ },
+ }, nil},
+ testReadFrom{fileOps{
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ }, 6e10, nil},
+ testClose{nil},
+ },
+ }, {
+ file: "testdata/pax-sparse-big.tar",
+ tests: []testFnc{
+ testHeader{Header{
+ Typeflag: TypeReg,
+ Name: "pax-sparse",
+ Size: 6e10,
+ SparseHoles: []sparseEntry{
+ {Offset: 0e10, Length: 1e10 - 100},
+ {Offset: 1e10, Length: 1e10 - 100},
+ {Offset: 2e10, Length: 1e10 - 100},
+ {Offset: 3e10, Length: 1e10 - 100},
+ {Offset: 4e10, Length: 1e10 - 100},
+ {Offset: 5e10, Length: 1e10 - 100},
+ },
+ }, nil},
+ testReadFrom{fileOps{
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ int64(1e10 - blockSize),
+ strings.Repeat("\x00", blockSize-100) + strings.Repeat("0123456789", 10),
+ }, 6e10, nil},
+ testClose{nil},
+ },
+ */
+ }, {
+ file: "testdata/trailing-slash.tar",
+ tests: []testFnc{
+ testHeader{Header{Name: strings.Repeat("123456789/", 30)}, nil},
+ testClose{nil},
+ },
+ }, {
+ // Automatically promote zero value of Typeflag depending on the name.
+ file: "testdata/file-and-dir.tar",
+ tests: []testFnc{
+ testHeader{Header{Name: "small.txt", Size: 5}, nil},
+ testWrite{"Kilts", 5, nil},
+ testHeader{Header{Name: "dir/"}, nil},
+ testClose{nil},
+ },
+ }}
+
+ equalError := func(x, y error) bool {
+ _, ok1 := x.(headerError)
+ _, ok2 := y.(headerError)
+ if ok1 || ok2 {
+ return ok1 && ok2
+ }
+ return x == y
+ }
+ for _, v := range vectors {
+ t.Run(path.Base(v.file), func(t *testing.T) {
+ const maxSize = 10 << 10 // 10KiB
+ buf := new(bytes.Buffer)
+ tw := NewWriter(iotest.TruncateWriter(buf, maxSize))
+
+ for i, tf := range v.tests {
+ switch tf := tf.(type) {
+ case testHeader:
+ err := tw.WriteHeader(&tf.hdr)
+ if !equalError(err, tf.wantErr) {
+ t.Fatalf("test %d, WriteHeader() = %v, want %v", i, err, tf.wantErr)
+ }
+ case testWrite:
+ got, err := tw.Write([]byte(tf.str))
+ if got != tf.wantCnt || !equalError(err, tf.wantErr) {
+ t.Fatalf("test %d, Write() = (%d, %v), want (%d, %v)", i, got, err, tf.wantCnt, tf.wantErr)
+ }
+ case testReadFrom:
+ f := &testFile{ops: tf.ops}
+ got, err := tw.readFrom(f)
+ if _, ok := err.(testError); ok {
+ t.Errorf("test %d, ReadFrom(): %v", i, err)
+ } else if got != tf.wantCnt || !equalError(err, tf.wantErr) {
+ t.Errorf("test %d, ReadFrom() = (%d, %v), want (%d, %v)", i, got, err, tf.wantCnt, tf.wantErr)
+ }
+ if len(f.ops) > 0 {
+ t.Errorf("test %d, expected %d more operations", i, len(f.ops))
+ }
+ case testClose:
+ err := tw.Close()
+ if !equalError(err, tf.wantErr) {
+ t.Fatalf("test %d, Close() = %v, want %v", i, err, tf.wantErr)
+ }
+ default:
+ t.Fatalf("test %d, unknown test operation: %T", i, tf)
+ }
+ }
+
+ if v.file != "" {
+ want, err := os.ReadFile(v.file)
+ if err != nil {
+ t.Fatalf("ReadFile() = %v, want nil", err)
+ }
+ got := buf.Bytes()
+ if !bytes.Equal(want, got) {
+ t.Fatalf("incorrect result: (-got +want)\n%v", bytediff(got, want))
+ }
+ }
+ })
+ }
+}
+
+func TestPax(t *testing.T) {
+ // Create an archive with a large name
+ fileinfo, err := os.Stat("testdata/small.txt")
+ if err != nil {
+ t.Fatal(err)
+ }
+ hdr, err := FileInfoHeader(fileinfo, "")
+ if err != nil {
+ t.Fatalf("os.Stat: %v", err)
+ }
+ // Force a PAX long name to be written
+ longName := strings.Repeat("ab", 100)
+ contents := strings.Repeat(" ", int(hdr.Size))
+ hdr.Name = longName
+ var buf bytes.Buffer
+ writer := NewWriter(&buf)
+ if err := writer.WriteHeader(hdr); err != nil {
+ t.Fatal(err)
+ }
+ if _, err = writer.Write([]byte(contents)); err != nil {
+ t.Fatal(err)
+ }
+ if err := writer.Close(); err != nil {
+ t.Fatal(err)
+ }
+ // Simple test to make sure PAX extensions are in effect
+ if !bytes.Contains(buf.Bytes(), []byte("PaxHeaders.0")) {
+ t.Fatal("Expected at least one PAX header to be written.")
+ }
+ // Test that we can get a long name back out of the archive.
+ reader := NewReader(&buf)
+ hdr, err = reader.Next()
+ if err != nil {
+ t.Fatal(err)
+ }
+ if hdr.Name != longName {
+ t.Fatal("Couldn't recover long file name")
+ }
+}
+
+func TestPaxSymlink(t *testing.T) {
+ // Create an archive with a large linkname
+ fileinfo, err := os.Stat("testdata/small.txt")
+ if err != nil {
+ t.Fatal(err)
+ }
+ hdr, err := FileInfoHeader(fileinfo, "")
+ hdr.Typeflag = TypeSymlink
+ if err != nil {
+ t.Fatalf("os.Stat:1 %v", err)
+ }
+ // Force a PAX long linkname to be written
+ longLinkname := strings.Repeat("1234567890/1234567890", 10)
+ hdr.Linkname = longLinkname
+
+ hdr.Size = 0
+ var buf bytes.Buffer
+ writer := NewWriter(&buf)
+ if err := writer.WriteHeader(hdr); err != nil {
+ t.Fatal(err)
+ }
+ if err := writer.Close(); err != nil {
+ t.Fatal(err)
+ }
+ // Simple test to make sure PAX extensions are in effect
+ if !bytes.Contains(buf.Bytes(), []byte("PaxHeaders.0")) {
+ t.Fatal("Expected at least one PAX header to be written.")
+ }
+ // Test that we can get a long name back out of the archive.
+ reader := NewReader(&buf)
+ hdr, err = reader.Next()
+ if err != nil {
+ t.Fatal(err)
+ }
+ if hdr.Linkname != longLinkname {
+ t.Fatal("Couldn't recover long link name")
+ }
+}
+
+func TestPaxNonAscii(t *testing.T) {
+ // Create an archive with non ascii. These should trigger a pax header
+ // because pax headers have a defined utf-8 encoding.
+ fileinfo, err := os.Stat("testdata/small.txt")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ hdr, err := FileInfoHeader(fileinfo, "")
+ if err != nil {
+ t.Fatalf("os.Stat:1 %v", err)
+ }
+
+ // some sample data
+ chineseFilename := "文件名"
+ chineseGroupname := "組"
+ chineseUsername := "用戶名"
+
+ hdr.Name = chineseFilename
+ hdr.Gname = chineseGroupname
+ hdr.Uname = chineseUsername
+
+ contents := strings.Repeat(" ", int(hdr.Size))
+
+ var buf bytes.Buffer
+ writer := NewWriter(&buf)
+ if err := writer.WriteHeader(hdr); err != nil {
+ t.Fatal(err)
+ }
+ if _, err = writer.Write([]byte(contents)); err != nil {
+ t.Fatal(err)
+ }
+ if err := writer.Close(); err != nil {
+ t.Fatal(err)
+ }
+ // Simple test to make sure PAX extensions are in effect
+ if !bytes.Contains(buf.Bytes(), []byte("PaxHeaders.0")) {
+ t.Fatal("Expected at least one PAX header to be written.")
+ }
+ // Test that we can get a long name back out of the archive.
+ reader := NewReader(&buf)
+ hdr, err = reader.Next()
+ if err != nil {
+ t.Fatal(err)
+ }
+ if hdr.Name != chineseFilename {
+ t.Fatal("Couldn't recover unicode name")
+ }
+ if hdr.Gname != chineseGroupname {
+ t.Fatal("Couldn't recover unicode group")
+ }
+ if hdr.Uname != chineseUsername {
+ t.Fatal("Couldn't recover unicode user")
+ }
+}
+
+func TestPaxXattrs(t *testing.T) {
+ xattrs := map[string]string{
+ "user.key": "value",
+ }
+
+ // Create an archive with an xattr
+ fileinfo, err := os.Stat("testdata/small.txt")
+ if err != nil {
+ t.Fatal(err)
+ }
+ hdr, err := FileInfoHeader(fileinfo, "")
+ if err != nil {
+ t.Fatalf("os.Stat: %v", err)
+ }
+ contents := "Kilts"
+ hdr.Xattrs = xattrs
+ var buf bytes.Buffer
+ writer := NewWriter(&buf)
+ if err := writer.WriteHeader(hdr); err != nil {
+ t.Fatal(err)
+ }
+ if _, err = writer.Write([]byte(contents)); err != nil {
+ t.Fatal(err)
+ }
+ if err := writer.Close(); err != nil {
+ t.Fatal(err)
+ }
+ // Test that we can get the xattrs back out of the archive.
+ reader := NewReader(&buf)
+ hdr, err = reader.Next()
+ if err != nil {
+ t.Fatal(err)
+ }
+ if !reflect.DeepEqual(hdr.Xattrs, xattrs) {
+ t.Fatalf("xattrs did not survive round trip: got %+v, want %+v",
+ hdr.Xattrs, xattrs)
+ }
+}
+
+func TestPaxHeadersSorted(t *testing.T) {
+ fileinfo, err := os.Stat("testdata/small.txt")
+ if err != nil {
+ t.Fatal(err)
+ }
+ hdr, err := FileInfoHeader(fileinfo, "")
+ if err != nil {
+ t.Fatalf("os.Stat: %v", err)
+ }
+ contents := strings.Repeat(" ", int(hdr.Size))
+
+ hdr.Xattrs = map[string]string{
+ "foo": "foo",
+ "bar": "bar",
+ "baz": "baz",
+ "qux": "qux",
+ }
+
+ var buf bytes.Buffer
+ writer := NewWriter(&buf)
+ if err := writer.WriteHeader(hdr); err != nil {
+ t.Fatal(err)
+ }
+ if _, err = writer.Write([]byte(contents)); err != nil {
+ t.Fatal(err)
+ }
+ if err := writer.Close(); err != nil {
+ t.Fatal(err)
+ }
+ // Simple test to make sure PAX extensions are in effect
+ if !bytes.Contains(buf.Bytes(), []byte("PaxHeaders.0")) {
+ t.Fatal("Expected at least one PAX header to be written.")
+ }
+
+ // xattr bar should always appear before others
+ indices := []int{
+ bytes.Index(buf.Bytes(), []byte("bar=bar")),
+ bytes.Index(buf.Bytes(), []byte("baz=baz")),
+ bytes.Index(buf.Bytes(), []byte("foo=foo")),
+ bytes.Index(buf.Bytes(), []byte("qux=qux")),
+ }
+ if !sort.IntsAreSorted(indices) {
+ t.Fatal("PAX headers are not sorted")
+ }
+}
+
+func TestUSTARLongName(t *testing.T) {
+ // Create an archive with a path that failed to split with USTAR extension in previous versions.
+ fileinfo, err := os.Stat("testdata/small.txt")
+ if err != nil {
+ t.Fatal(err)
+ }
+ hdr, err := FileInfoHeader(fileinfo, "")
+ hdr.Typeflag = TypeDir
+ if err != nil {
+ t.Fatalf("os.Stat:1 %v", err)
+ }
+ // Force a PAX long name to be written. The name was taken from a practical example
+ // that fails and replaced ever char through numbers to anonymize the sample.
+ longName := "/0000_0000000/00000-000000000/0000_0000000/00000-0000000000000/0000_0000000/00000-0000000-00000000/0000_0000000/00000000/0000_0000000/000/0000_0000000/00000000v00/0000_0000000/000000/0000_0000000/0000000/0000_0000000/00000y-00/0000/0000/00000000/0x000000/"
+ hdr.Name = longName
+
+ hdr.Size = 0
+ var buf bytes.Buffer
+ writer := NewWriter(&buf)
+ if err := writer.WriteHeader(hdr); err != nil {
+ t.Fatal(err)
+ }
+ if err := writer.Close(); err != nil {
+ t.Fatal(err)
+ }
+ // Test that we can get a long name back out of the archive.
+ reader := NewReader(&buf)
+ hdr, err = reader.Next()
+ if err != nil && err != ErrInsecurePath {
+ t.Fatal(err)
+ }
+ if hdr.Name != longName {
+ t.Fatal("Couldn't recover long name")
+ }
+}
+
+func TestValidTypeflagWithPAXHeader(t *testing.T) {
+ var buffer bytes.Buffer
+ tw := NewWriter(&buffer)
+
+ fileName := strings.Repeat("ab", 100)
+
+ hdr := &Header{
+ Name: fileName,
+ Size: 4,
+ Typeflag: 0,
+ }
+ if err := tw.WriteHeader(hdr); err != nil {
+ t.Fatalf("Failed to write header: %s", err)
+ }
+ if _, err := tw.Write([]byte("fooo")); err != nil {
+ t.Fatalf("Failed to write the file's data: %s", err)
+ }
+ tw.Close()
+
+ tr := NewReader(&buffer)
+
+ for {
+ header, err := tr.Next()
+ if err == io.EOF {
+ break
+ }
+ if err != nil {
+ t.Fatalf("Failed to read header: %s", err)
+ }
+ if header.Typeflag != TypeReg {
+ t.Fatalf("Typeflag should've been %d, found %d", TypeReg, header.Typeflag)
+ }
+ }
+}
+
+// failOnceWriter fails exactly once and then always reports success.
+type failOnceWriter bool
+
+func (w *failOnceWriter) Write(b []byte) (int, error) {
+ if !*w {
+ return 0, io.ErrShortWrite
+ }
+ *w = true
+ return len(b), nil
+}
+
+func TestWriterErrors(t *testing.T) {
+ t.Run("HeaderOnly", func(t *testing.T) {
+ tw := NewWriter(new(bytes.Buffer))
+ hdr := &Header{Name: "dir/", Typeflag: TypeDir}
+ if err := tw.WriteHeader(hdr); err != nil {
+ t.Fatalf("WriteHeader() = %v, want nil", err)
+ }
+ if _, err := tw.Write([]byte{0x00}); err != ErrWriteTooLong {
+ t.Fatalf("Write() = %v, want %v", err, ErrWriteTooLong)
+ }
+ })
+
+ t.Run("NegativeSize", func(t *testing.T) {
+ tw := NewWriter(new(bytes.Buffer))
+ hdr := &Header{Name: "small.txt", Size: -1}
+ if err := tw.WriteHeader(hdr); err == nil {
+ t.Fatalf("WriteHeader() = nil, want non-nil error")
+ }
+ })
+
+ t.Run("BeforeHeader", func(t *testing.T) {
+ tw := NewWriter(new(bytes.Buffer))
+ if _, err := tw.Write([]byte("Kilts")); err != ErrWriteTooLong {
+ t.Fatalf("Write() = %v, want %v", err, ErrWriteTooLong)
+ }
+ })
+
+ t.Run("AfterClose", func(t *testing.T) {
+ tw := NewWriter(new(bytes.Buffer))
+ hdr := &Header{Name: "small.txt"}
+ if err := tw.WriteHeader(hdr); err != nil {
+ t.Fatalf("WriteHeader() = %v, want nil", err)
+ }
+ if err := tw.Close(); err != nil {
+ t.Fatalf("Close() = %v, want nil", err)
+ }
+ if _, err := tw.Write([]byte("Kilts")); err != ErrWriteAfterClose {
+ t.Fatalf("Write() = %v, want %v", err, ErrWriteAfterClose)
+ }
+ if err := tw.Flush(); err != ErrWriteAfterClose {
+ t.Fatalf("Flush() = %v, want %v", err, ErrWriteAfterClose)
+ }
+ if err := tw.Close(); err != nil {
+ t.Fatalf("Close() = %v, want nil", err)
+ }
+ })
+
+ t.Run("PrematureFlush", func(t *testing.T) {
+ tw := NewWriter(new(bytes.Buffer))
+ hdr := &Header{Name: "small.txt", Size: 5}
+ if err := tw.WriteHeader(hdr); err != nil {
+ t.Fatalf("WriteHeader() = %v, want nil", err)
+ }
+ if err := tw.Flush(); err == nil {
+ t.Fatalf("Flush() = %v, want non-nil error", err)
+ }
+ })
+
+ t.Run("PrematureClose", func(t *testing.T) {
+ tw := NewWriter(new(bytes.Buffer))
+ hdr := &Header{Name: "small.txt", Size: 5}
+ if err := tw.WriteHeader(hdr); err != nil {
+ t.Fatalf("WriteHeader() = %v, want nil", err)
+ }
+ if err := tw.Close(); err == nil {
+ t.Fatalf("Close() = %v, want non-nil error", err)
+ }
+ })
+
+ t.Run("Persistence", func(t *testing.T) {
+ tw := NewWriter(new(failOnceWriter))
+ if err := tw.WriteHeader(&Header{}); err != io.ErrShortWrite {
+ t.Fatalf("WriteHeader() = %v, want %v", err, io.ErrShortWrite)
+ }
+ if err := tw.WriteHeader(&Header{Name: "small.txt"}); err == nil {
+ t.Errorf("WriteHeader() = got %v, want non-nil error", err)
+ }
+ if _, err := tw.Write(nil); err == nil {
+ t.Errorf("Write() = %v, want non-nil error", err)
+ }
+ if err := tw.Flush(); err == nil {
+ t.Errorf("Flush() = %v, want non-nil error", err)
+ }
+ if err := tw.Close(); err == nil {
+ t.Errorf("Close() = %v, want non-nil error", err)
+ }
+ })
+}
+
+func TestSplitUSTARPath(t *testing.T) {
+ sr := strings.Repeat
+
+ vectors := []struct {
+ input string // Input path
+ prefix string // Expected output prefix
+ suffix string // Expected output suffix
+ ok bool // Split success?
+ }{
+ {"", "", "", false},
+ {"abc", "", "", false},
+ {"用戶名", "", "", false},
+ {sr("a", nameSize), "", "", false},
+ {sr("a", nameSize) + "/", "", "", false},
+ {sr("a", nameSize) + "/a", sr("a", nameSize), "a", true},
+ {sr("a", prefixSize) + "/", "", "", false},
+ {sr("a", prefixSize) + "/a", sr("a", prefixSize), "a", true},
+ {sr("a", nameSize+1), "", "", false},
+ {sr("/", nameSize+1), sr("/", nameSize-1), "/", true},
+ {sr("a", prefixSize) + "/" + sr("b", nameSize),
+ sr("a", prefixSize), sr("b", nameSize), true},
+ {sr("a", prefixSize) + "//" + sr("b", nameSize), "", "", false},
+ {sr("a/", nameSize), sr("a/", 77) + "a", sr("a/", 22), true},
+ }
+
+ for _, v := range vectors {
+ prefix, suffix, ok := splitUSTARPath(v.input)
+ if prefix != v.prefix || suffix != v.suffix || ok != v.ok {
+ t.Errorf("splitUSTARPath(%q):\ngot (%q, %q, %v)\nwant (%q, %q, %v)",
+ v.input, prefix, suffix, ok, v.prefix, v.suffix, v.ok)
+ }
+ }
+}
+
+// TestIssue12594 tests that the Writer does not attempt to populate the prefix
+// field when encoding a header in the GNU format. The prefix field is valid
+// in USTAR and PAX, but not GNU.
+func TestIssue12594(t *testing.T) {
+ names := []string{
+ "0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/file.txt",
+ "0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/33/file.txt",
+ "0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/333/file.txt",
+ "0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/33/34/35/36/37/38/39/40/file.txt",
+ "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000/file.txt",
+ "/home/support/.openoffice.org/3/user/uno_packages/cache/registry/com.sun.star.comp.deployment.executable.PackageRegistryBackend",
+ }
+
+ for i, name := range names {
+ var b bytes.Buffer
+
+ tw := NewWriter(&b)
+ if err := tw.WriteHeader(&Header{
+ Name: name,
+ Uid: 1 << 25, // Prevent USTAR format
+ }); err != nil {
+ t.Errorf("test %d, unexpected WriteHeader error: %v", i, err)
+ }
+ if err := tw.Close(); err != nil {
+ t.Errorf("test %d, unexpected Close error: %v", i, err)
+ }
+
+ // The prefix field should never appear in the GNU format.
+ var blk block
+ copy(blk[:], b.Bytes())
+ prefix := string(blk.toUSTAR().prefix())
+ prefix, _, _ = strings.Cut(prefix, "\x00") // Truncate at the NUL terminator
+ if blk.getFormat() == FormatGNU && len(prefix) > 0 && strings.HasPrefix(name, prefix) {
+ t.Errorf("test %d, found prefix in GNU format: %s", i, prefix)
+ }
+
+ tr := NewReader(&b)
+ hdr, err := tr.Next()
+ if err != nil && err != ErrInsecurePath {
+ t.Errorf("test %d, unexpected Next error: %v", i, err)
+ }
+ if hdr.Name != name {
+ t.Errorf("test %d, hdr.Name = %s, want %s", i, hdr.Name, name)
+ }
+ }
+}
+
+func TestWriteLongHeader(t *testing.T) {
+ for _, test := range []struct {
+ name string
+ h *Header
+ }{{
+ name: "name too long",
+ h: &Header{Name: strings.Repeat("a", maxSpecialFileSize)},
+ }, {
+ name: "linkname too long",
+ h: &Header{Linkname: strings.Repeat("a", maxSpecialFileSize)},
+ }, {
+ name: "uname too long",
+ h: &Header{Uname: strings.Repeat("a", maxSpecialFileSize)},
+ }, {
+ name: "gname too long",
+ h: &Header{Gname: strings.Repeat("a", maxSpecialFileSize)},
+ }, {
+ name: "PAX header too long",
+ h: &Header{PAXRecords: map[string]string{"GOLANG.x": strings.Repeat("a", maxSpecialFileSize)}},
+ }} {
+ w := NewWriter(io.Discard)
+ if err := w.WriteHeader(test.h); err != ErrFieldTooLong {
+ t.Errorf("%v: w.WriteHeader() = %v, want ErrFieldTooLong", test.name, err)
+ }
+ }
+}
+
+// testNonEmptyWriter wraps an io.Writer and ensures that
+// Write is never called with an empty buffer.
+type testNonEmptyWriter struct{ io.Writer }
+
+func (w testNonEmptyWriter) Write(b []byte) (int, error) {
+ if len(b) == 0 {
+ return 0, errors.New("unexpected empty Write call")
+ }
+ return w.Writer.Write(b)
+}
+
+func TestFileWriter(t *testing.T) {
+ type (
+ testWrite struct { // Write(str) == (wantCnt, wantErr)
+ str string
+ wantCnt int
+ wantErr error
+ }
+ testReadFrom struct { // ReadFrom(testFile{ops}) == (wantCnt, wantErr)
+ ops fileOps
+ wantCnt int64
+ wantErr error
+ }
+ testRemaining struct { // logicalRemaining() == wantLCnt, physicalRemaining() == wantPCnt
+ wantLCnt int64
+ wantPCnt int64
+ }
+ testFnc any // testWrite | testReadFrom | testRemaining
+ )
+
+ type (
+ makeReg struct {
+ size int64
+ wantStr string
+ }
+ makeSparse struct {
+ makeReg makeReg
+ sph sparseHoles
+ size int64
+ }
+ fileMaker any // makeReg | makeSparse
+ )
+
+ vectors := []struct {
+ maker fileMaker
+ tests []testFnc
+ }{{
+ maker: makeReg{0, ""},
+ tests: []testFnc{
+ testRemaining{0, 0},
+ testWrite{"", 0, nil},
+ testWrite{"a", 0, ErrWriteTooLong},
+ testReadFrom{fileOps{""}, 0, nil},
+ testReadFrom{fileOps{"a"}, 0, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeReg{1, "a"},
+ tests: []testFnc{
+ testRemaining{1, 1},
+ testWrite{"", 0, nil},
+ testWrite{"a", 1, nil},
+ testWrite{"bcde", 0, ErrWriteTooLong},
+ testWrite{"", 0, nil},
+ testReadFrom{fileOps{""}, 0, nil},
+ testReadFrom{fileOps{"a"}, 0, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeReg{5, "hello"},
+ tests: []testFnc{
+ testRemaining{5, 5},
+ testWrite{"hello", 5, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeReg{5, "\x00\x00\x00\x00\x00"},
+ tests: []testFnc{
+ testRemaining{5, 5},
+ testReadFrom{fileOps{"\x00\x00\x00\x00\x00"}, 5, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeReg{5, "\x00\x00\x00\x00\x00"},
+ tests: []testFnc{
+ testRemaining{5, 5},
+ testReadFrom{fileOps{"\x00\x00\x00\x00\x00extra"}, 5, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeReg{5, "abc\x00\x00"},
+ tests: []testFnc{
+ testRemaining{5, 5},
+ testWrite{"abc", 3, nil},
+ testRemaining{2, 2},
+ testReadFrom{fileOps{"\x00\x00"}, 2, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeReg{5, "\x00\x00abc"},
+ tests: []testFnc{
+ testRemaining{5, 5},
+ testWrite{"\x00\x00", 2, nil},
+ testRemaining{3, 3},
+ testWrite{"abc", 3, nil},
+ testReadFrom{fileOps{"z"}, 0, ErrWriteTooLong},
+ testWrite{"z", 0, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{5, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testRemaining{8, 5},
+ testWrite{"ab\x00\x00\x00cde", 8, nil},
+ testWrite{"a", 0, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{5, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testWrite{"ab\x00\x00\x00cdez", 8, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{5, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testWrite{"ab\x00", 3, nil},
+ testRemaining{5, 3},
+ testWrite{"\x00\x00cde", 5, nil},
+ testWrite{"a", 0, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{5, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testWrite{"ab", 2, nil},
+ testRemaining{6, 3},
+ testReadFrom{fileOps{int64(3), "cde"}, 6, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{5, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testReadFrom{fileOps{"ab", int64(3), "cde"}, 8, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{5, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testReadFrom{fileOps{"ab", int64(3), "cdeX"}, 8, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{4, "abcd"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testReadFrom{fileOps{"ab", int64(3), "cd"}, 7, io.ErrUnexpectedEOF},
+ testRemaining{1, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{4, "abcd"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testReadFrom{fileOps{"ab", int64(3), "cde"}, 7, errMissData},
+ testRemaining{1, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{6, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testReadFrom{fileOps{"ab", int64(3), "cde"}, 8, errUnrefData},
+ testRemaining{0, 1},
+ },
+ }, {
+ maker: makeSparse{makeReg{4, "abcd"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testWrite{"ab", 2, nil},
+ testRemaining{6, 2},
+ testWrite{"\x00\x00\x00", 3, nil},
+ testRemaining{3, 2},
+ testWrite{"cde", 2, errMissData},
+ testRemaining{1, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{6, "abcde"}, sparseHoles{{2, 3}}, 8},
+ tests: []testFnc{
+ testWrite{"ab", 2, nil},
+ testRemaining{6, 4},
+ testWrite{"\x00\x00\x00", 3, nil},
+ testRemaining{3, 4},
+ testWrite{"cde", 3, errUnrefData},
+ testRemaining{0, 1},
+ },
+ }, {
+ maker: makeSparse{makeReg{3, "abc"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testRemaining{7, 3},
+ testWrite{"\x00\x00abc\x00\x00", 7, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{3, "abc"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testRemaining{7, 3},
+ testReadFrom{fileOps{int64(2), "abc", int64(1), "\x00"}, 7, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{3, ""}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testWrite{"abcdefg", 0, errWriteHole},
+ },
+ }, {
+ maker: makeSparse{makeReg{3, "abc"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testWrite{"\x00\x00abcde", 5, errWriteHole},
+ },
+ }, {
+ maker: makeSparse{makeReg{3, "abc"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testWrite{"\x00\x00abc\x00\x00z", 7, ErrWriteTooLong},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{3, "abc"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testWrite{"\x00\x00", 2, nil},
+ testRemaining{5, 3},
+ testWrite{"abc", 3, nil},
+ testRemaining{2, 0},
+ testWrite{"\x00\x00", 2, nil},
+ testRemaining{0, 0},
+ },
+ }, {
+ maker: makeSparse{makeReg{2, "ab"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testWrite{"\x00\x00", 2, nil},
+ testWrite{"abc", 2, errMissData},
+ testWrite{"\x00\x00", 0, errMissData},
+ },
+ }, {
+ maker: makeSparse{makeReg{4, "abc"}, sparseHoles{{0, 2}, {5, 2}}, 7},
+ tests: []testFnc{
+ testWrite{"\x00\x00", 2, nil},
+ testWrite{"abc", 3, nil},
+ testWrite{"\x00\x00", 2, errUnrefData},
+ },
+ }}
+
+ for i, v := range vectors {
+ var wantStr string
+ bb := new(strings.Builder)
+ w := testNonEmptyWriter{bb}
+ var fw fileWriter
+ switch maker := v.maker.(type) {
+ case makeReg:
+ fw = &regFileWriter{w, maker.size}
+ wantStr = maker.wantStr
+ case makeSparse:
+ if !validateSparseEntries(maker.sph, maker.size) {
+ t.Fatalf("invalid sparse map: %v", maker.sph)
+ }
+ spd := invertSparseEntries(maker.sph, maker.size)
+ fw = &regFileWriter{w, maker.makeReg.size}
+ fw = &sparseFileWriter{fw, spd, 0}
+ wantStr = maker.makeReg.wantStr
+ default:
+ t.Fatalf("test %d, unknown make operation: %T", i, maker)
+ }
+
+ for j, tf := range v.tests {
+ switch tf := tf.(type) {
+ case testWrite:
+ got, err := fw.Write([]byte(tf.str))
+ if got != tf.wantCnt || err != tf.wantErr {
+ t.Errorf("test %d.%d, Write(%s):\ngot (%d, %v)\nwant (%d, %v)", i, j, tf.str, got, err, tf.wantCnt, tf.wantErr)
+ }
+ case testReadFrom:
+ f := &testFile{ops: tf.ops}
+ got, err := fw.ReadFrom(f)
+ if _, ok := err.(testError); ok {
+ t.Errorf("test %d.%d, ReadFrom(): %v", i, j, err)
+ } else if got != tf.wantCnt || err != tf.wantErr {
+ t.Errorf("test %d.%d, ReadFrom() = (%d, %v), want (%d, %v)", i, j, got, err, tf.wantCnt, tf.wantErr)
+ }
+ if len(f.ops) > 0 {
+ t.Errorf("test %d.%d, expected %d more operations", i, j, len(f.ops))
+ }
+ case testRemaining:
+ if got := fw.logicalRemaining(); got != tf.wantLCnt {
+ t.Errorf("test %d.%d, logicalRemaining() = %d, want %d", i, j, got, tf.wantLCnt)
+ }
+ if got := fw.physicalRemaining(); got != tf.wantPCnt {
+ t.Errorf("test %d.%d, physicalRemaining() = %d, want %d", i, j, got, tf.wantPCnt)
+ }
+ default:
+ t.Fatalf("test %d.%d, unknown test operation: %T", i, j, tf)
+ }
+ }
+
+ if got := bb.String(); got != wantStr {
+ t.Fatalf("test %d, String() = %q, want %q", i, got, wantStr)
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 04:22:42 +0000