mirror of
https://github.com/autc04/Retro68.git
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270 lines
6.0 KiB
Go
270 lines
6.0 KiB
Go
// Copyright 2018 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 os_test
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import (
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"internal/testenv"
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"io/fs"
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"os"
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"path/filepath"
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"runtime"
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"testing"
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)
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// testStatAndLstat verifies that all os.Stat, os.Lstat os.File.Stat and os.Readdir work.
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func testStatAndLstat(t *testing.T, path string, isLink bool, statCheck, lstatCheck func(*testing.T, string, fs.FileInfo)) {
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// test os.Stat
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sfi, err := os.Stat(path)
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if err != nil {
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t.Error(err)
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return
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}
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statCheck(t, path, sfi)
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// test os.Lstat
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lsfi, err := os.Lstat(path)
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if err != nil {
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t.Error(err)
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return
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}
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lstatCheck(t, path, lsfi)
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if isLink {
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if os.SameFile(sfi, lsfi) {
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t.Errorf("stat and lstat of %q should not be the same", path)
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}
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} else {
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if !os.SameFile(sfi, lsfi) {
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t.Errorf("stat and lstat of %q should be the same", path)
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}
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}
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// test os.File.Stat
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f, err := os.Open(path)
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if err != nil {
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t.Error(err)
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return
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}
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defer f.Close()
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sfi2, err := f.Stat()
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if err != nil {
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t.Error(err)
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return
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}
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statCheck(t, path, sfi2)
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if !os.SameFile(sfi, sfi2) {
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t.Errorf("stat of open %q file and stat of %q should be the same", path, path)
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}
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if isLink {
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if os.SameFile(sfi2, lsfi) {
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t.Errorf("stat of opened %q file and lstat of %q should not be the same", path, path)
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}
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} else {
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if !os.SameFile(sfi2, lsfi) {
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t.Errorf("stat of opened %q file and lstat of %q should be the same", path, path)
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}
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}
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// test fs.FileInfo returned by os.Readdir
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if len(path) > 0 && os.IsPathSeparator(path[len(path)-1]) {
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// skip os.Readdir test of directories with slash at the end
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return
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}
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parentdir := filepath.Dir(path)
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parent, err := os.Open(parentdir)
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if err != nil {
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t.Error(err)
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return
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}
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defer parent.Close()
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fis, err := parent.Readdir(-1)
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if err != nil {
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t.Error(err)
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return
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}
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var lsfi2 fs.FileInfo
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base := filepath.Base(path)
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for _, fi2 := range fis {
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if fi2.Name() == base {
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lsfi2 = fi2
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break
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}
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}
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if lsfi2 == nil {
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t.Errorf("failed to find %q in its parent", path)
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return
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}
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lstatCheck(t, path, lsfi2)
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if !os.SameFile(lsfi, lsfi2) {
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t.Errorf("lstat of %q file in %q directory and %q should be the same", lsfi2.Name(), parentdir, path)
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}
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}
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// testIsDir verifies that fi refers to directory.
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func testIsDir(t *testing.T, path string, fi fs.FileInfo) {
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t.Helper()
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if !fi.IsDir() {
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t.Errorf("%q should be a directory", path)
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}
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if fi.Mode()&fs.ModeSymlink != 0 {
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t.Errorf("%q should not be a symlink", path)
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}
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}
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// testIsSymlink verifies that fi refers to symlink.
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func testIsSymlink(t *testing.T, path string, fi fs.FileInfo) {
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t.Helper()
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if fi.IsDir() {
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t.Errorf("%q should not be a directory", path)
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}
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if fi.Mode()&fs.ModeSymlink == 0 {
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t.Errorf("%q should be a symlink", path)
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}
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}
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// testIsFile verifies that fi refers to file.
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func testIsFile(t *testing.T, path string, fi fs.FileInfo) {
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t.Helper()
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if fi.IsDir() {
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t.Errorf("%q should not be a directory", path)
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}
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if fi.Mode()&fs.ModeSymlink != 0 {
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t.Errorf("%q should not be a symlink", path)
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}
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}
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func testDirStats(t *testing.T, path string) {
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testStatAndLstat(t, path, false, testIsDir, testIsDir)
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}
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func testFileStats(t *testing.T, path string) {
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testStatAndLstat(t, path, false, testIsFile, testIsFile)
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}
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func testSymlinkStats(t *testing.T, path string, isdir bool) {
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if isdir {
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testStatAndLstat(t, path, true, testIsDir, testIsSymlink)
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} else {
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testStatAndLstat(t, path, true, testIsFile, testIsSymlink)
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}
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}
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func testSymlinkSameFile(t *testing.T, path, link string) {
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pathfi, err := os.Stat(path)
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if err != nil {
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t.Error(err)
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return
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}
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linkfi, err := os.Stat(link)
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if err != nil {
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t.Error(err)
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return
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}
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if !os.SameFile(pathfi, linkfi) {
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t.Errorf("os.Stat(%q) and os.Stat(%q) are not the same file", path, link)
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}
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linkfi, err = os.Lstat(link)
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if err != nil {
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t.Error(err)
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return
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}
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if os.SameFile(pathfi, linkfi) {
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t.Errorf("os.Stat(%q) and os.Lstat(%q) are the same file", path, link)
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}
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}
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func TestDirAndSymlinkStats(t *testing.T) {
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testenv.MustHaveSymlink(t)
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tmpdir := t.TempDir()
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dir := filepath.Join(tmpdir, "dir")
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if err := os.Mkdir(dir, 0777); err != nil {
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t.Fatal(err)
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}
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testDirStats(t, dir)
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dirlink := filepath.Join(tmpdir, "link")
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if err := os.Symlink(dir, dirlink); err != nil {
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t.Fatal(err)
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}
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testSymlinkStats(t, dirlink, true)
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testSymlinkSameFile(t, dir, dirlink)
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linklink := filepath.Join(tmpdir, "linklink")
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if err := os.Symlink(dirlink, linklink); err != nil {
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t.Fatal(err)
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}
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testSymlinkStats(t, linklink, true)
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testSymlinkSameFile(t, dir, linklink)
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}
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func TestFileAndSymlinkStats(t *testing.T) {
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testenv.MustHaveSymlink(t)
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tmpdir := t.TempDir()
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file := filepath.Join(tmpdir, "file")
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if err := os.WriteFile(file, []byte(""), 0644); err != nil {
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t.Fatal(err)
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}
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testFileStats(t, file)
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filelink := filepath.Join(tmpdir, "link")
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if err := os.Symlink(file, filelink); err != nil {
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t.Fatal(err)
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}
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testSymlinkStats(t, filelink, false)
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testSymlinkSameFile(t, file, filelink)
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linklink := filepath.Join(tmpdir, "linklink")
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if err := os.Symlink(filelink, linklink); err != nil {
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t.Fatal(err)
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}
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testSymlinkStats(t, linklink, false)
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testSymlinkSameFile(t, file, linklink)
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}
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// see issue 27225 for details
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func TestSymlinkWithTrailingSlash(t *testing.T) {
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testenv.MustHaveSymlink(t)
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tmpdir := t.TempDir()
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dir := filepath.Join(tmpdir, "dir")
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if err := os.Mkdir(dir, 0777); err != nil {
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t.Fatal(err)
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}
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dirlink := filepath.Join(tmpdir, "link")
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if err := os.Symlink(dir, dirlink); err != nil {
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t.Fatal(err)
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}
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dirlinkWithSlash := dirlink + string(os.PathSeparator)
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if runtime.GOOS == "windows" {
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testSymlinkStats(t, dirlinkWithSlash, true)
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} else {
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testDirStats(t, dirlinkWithSlash)
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}
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fi1, err := os.Stat(dir)
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if err != nil {
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t.Error(err)
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return
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}
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fi2, err := os.Stat(dirlinkWithSlash)
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if err != nil {
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t.Error(err)
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return
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}
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if !os.SameFile(fi1, fi2) {
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t.Errorf("os.Stat(%q) and os.Stat(%q) are not the same file", dir, dirlinkWithSlash)
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}
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}
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