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4ce273956a
Directory walking in godoc relies on ReadDir which returns the result of os.Lstat. Instead make the the OS VFS's ReadDir use os.Stat on symlinks before returning. Fixes golang/go#15049 Change-Id: I34d17ca0027b0245f5ef434a000e5a3fe2af11cf Reviewed-on: https://go-review.googlesource.com/45096 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
110 lines
2.4 KiB
Go
110 lines
2.4 KiB
Go
// Copyright 2017 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 vfs
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import (
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"bytes"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"testing"
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"time"
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)
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type fakeFileInfo struct {
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dir bool
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link bool
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basename string
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modtime time.Time
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ents []*fakeFileInfo
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contents string
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err error
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}
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func (f *fakeFileInfo) Name() string { return f.basename }
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func (f *fakeFileInfo) Sys() interface{} { return nil }
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func (f *fakeFileInfo) ModTime() time.Time { return f.modtime }
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func (f *fakeFileInfo) IsDir() bool { return f.dir }
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func (f *fakeFileInfo) Size() int64 { return int64(len(f.contents)) }
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func (f *fakeFileInfo) Mode() os.FileMode {
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if f.dir {
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return 0755 | os.ModeDir
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}
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if f.link {
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return 0644 | os.ModeSymlink
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}
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return 0644
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}
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func TestOSReadDirFollowsSymLinks(t *testing.T) {
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// Stat is called on ReadDir output by osFS
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oldstat := stat
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stat = func(path string) (os.FileInfo, error) {
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if filepath.ToSlash(path) != "/tmp/subdir/is_link" {
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t.Fatalf("stat called on unexpected path %q", path)
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}
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return &fakeFileInfo{
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link: false,
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basename: "foo",
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}, nil
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}
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defer func() { stat = oldstat }()
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oldreaddir := readdir
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readdir = func(path string) ([]os.FileInfo, error) {
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return []os.FileInfo{
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&fakeFileInfo{
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link: true,
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basename: "is_link",
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},
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&fakeFileInfo{
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link: false,
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basename: "not_link",
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},
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}, nil
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}
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defer func() { readdir = oldreaddir }()
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fs := OS("/tmp")
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result, err := fs.ReadDir("subdir")
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if err != nil {
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t.Fatal(err)
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}
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var gotBuf bytes.Buffer
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for i, fi := range result {
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fmt.Fprintf(&gotBuf, "result[%d] = %v, %v\n", i, fi.Name(), fi.Mode())
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}
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got := gotBuf.String()
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want := `result[0] = foo, -rw-r--r--
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result[1] = not_link, -rw-r--r--
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`
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if got != want {
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t.Errorf("ReadDir got:\n%s\n\nwant:\n%s\n", got, want)
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}
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}
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func TestOSReadDirHandlesReadDirErrors(t *testing.T) {
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oldreaddir := readdir
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readdir = func(path string) ([]os.FileInfo, error) {
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return []os.FileInfo{
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&fakeFileInfo{
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dir: false,
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basename: "foo",
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},
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}, errors.New("some arbitrary filesystem failure")
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}
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defer func() { readdir = oldreaddir }()
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fs := OS("/tmp")
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_, err := fs.ReadDir("subdir")
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if got, want := fmt.Sprint(err), "some arbitrary filesystem failure"; got != want {
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t.Errorf("ReadDir = %v; want %q", got, want)
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}
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}
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