mirror of
https://github.com/autc04/Retro68.git
synced 2024-08-31 09:29:37 +00:00
2766 lines
65 KiB
Go
2766 lines
65 KiB
Go
// Copyright 2009 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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"bytes"
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"errors"
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"flag"
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"fmt"
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"internal/testenv"
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"io"
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"io/fs"
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"os"
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. "os"
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osexec "os/exec"
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"path/filepath"
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"reflect"
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"runtime"
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"runtime/debug"
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"sort"
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"strings"
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"sync"
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"syscall"
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"testing"
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"testing/fstest"
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"time"
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)
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func TestMain(m *testing.M) {
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if Getenv("GO_OS_TEST_DRAIN_STDIN") == "1" {
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os.Stdout.Close()
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io.Copy(io.Discard, os.Stdin)
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Exit(0)
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}
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Exit(m.Run())
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}
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var dot = []string{
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"dir.go",
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"env.go",
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"error.go",
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"file.go",
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"os_test.go",
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"types.go",
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}
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type sysDir struct {
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name string
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files []string
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}
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var sysdir = func() *sysDir {
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switch runtime.GOOS {
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case "android":
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return &sysDir{
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"/system/lib",
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[]string{
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"libmedia.so",
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"libpowermanager.so",
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},
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}
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case "ios":
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wd, err := syscall.Getwd()
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if err != nil {
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wd = err.Error()
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}
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sd := &sysDir{
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filepath.Join(wd, "..", ".."),
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[]string{
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"ResourceRules.plist",
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"Info.plist",
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},
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}
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found := true
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for _, f := range sd.files {
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path := filepath.Join(sd.name, f)
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if _, err := Stat(path); err != nil {
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found = false
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break
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}
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}
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if found {
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return sd
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}
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// In a self-hosted iOS build the above files might
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// not exist. Look for system files instead below.
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case "windows":
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return &sysDir{
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Getenv("SystemRoot") + "\\system32\\drivers\\etc",
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[]string{
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"networks",
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"protocol",
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"services",
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},
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}
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case "plan9":
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return &sysDir{
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"/lib/ndb",
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[]string{
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"common",
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"local",
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},
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}
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}
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return &sysDir{
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"/etc",
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[]string{
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"group",
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"hosts",
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"passwd",
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},
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}
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}()
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func size(name string, t *testing.T) int64 {
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file, err := Open(name)
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if err != nil {
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t.Fatal("open failed:", err)
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}
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defer func() {
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if err := file.Close(); err != nil {
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t.Error(err)
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}
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}()
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n, err := io.Copy(io.Discard, file)
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if err != nil {
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t.Fatal(err)
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}
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return n
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}
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func equal(name1, name2 string) (r bool) {
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switch runtime.GOOS {
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case "windows":
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r = strings.ToLower(name1) == strings.ToLower(name2)
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default:
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r = name1 == name2
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}
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return
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}
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// localTmp returns a local temporary directory not on NFS.
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func localTmp() string {
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switch runtime.GOOS {
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case "android", "ios", "windows":
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return TempDir()
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}
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return "/tmp"
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}
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func newFile(testName string, t *testing.T) (f *File) {
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f, err := os.CreateTemp(localTmp(), "_Go_"+testName)
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if err != nil {
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t.Fatalf("TempFile %s: %s", testName, err)
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}
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return
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}
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func newDir(testName string, t *testing.T) (name string) {
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name, err := os.MkdirTemp(localTmp(), "_Go_"+testName)
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if err != nil {
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t.Fatalf("TempDir %s: %s", testName, err)
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}
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return
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}
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var sfdir = sysdir.name
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var sfname = sysdir.files[0]
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func TestStat(t *testing.T) {
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path := sfdir + "/" + sfname
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dir, err := Stat(path)
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if err != nil {
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t.Fatal("stat failed:", err)
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}
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if !equal(sfname, dir.Name()) {
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t.Error("name should be ", sfname, "; is", dir.Name())
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}
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filesize := size(path, t)
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if dir.Size() != filesize {
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t.Error("size should be", filesize, "; is", dir.Size())
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}
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}
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func TestStatError(t *testing.T) {
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defer chtmpdir(t)()
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path := "no-such-file"
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fi, err := Stat(path)
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if err == nil {
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t.Fatal("got nil, want error")
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}
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if fi != nil {
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t.Errorf("got %v, want nil", fi)
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}
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if perr, ok := err.(*PathError); !ok {
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t.Errorf("got %T, want %T", err, perr)
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}
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testenv.MustHaveSymlink(t)
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link := "symlink"
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err = Symlink(path, link)
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if err != nil {
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t.Fatal(err)
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}
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fi, err = Stat(link)
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if err == nil {
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t.Fatal("got nil, want error")
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}
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if fi != nil {
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t.Errorf("got %v, want nil", fi)
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}
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if perr, ok := err.(*PathError); !ok {
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t.Errorf("got %T, want %T", err, perr)
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}
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}
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func TestFstat(t *testing.T) {
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path := sfdir + "/" + sfname
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file, err1 := Open(path)
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if err1 != nil {
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t.Fatal("open failed:", err1)
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}
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defer file.Close()
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dir, err2 := file.Stat()
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if err2 != nil {
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t.Fatal("fstat failed:", err2)
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}
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if !equal(sfname, dir.Name()) {
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t.Error("name should be ", sfname, "; is", dir.Name())
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}
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filesize := size(path, t)
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if dir.Size() != filesize {
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t.Error("size should be", filesize, "; is", dir.Size())
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}
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}
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func TestLstat(t *testing.T) {
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path := sfdir + "/" + sfname
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dir, err := Lstat(path)
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if err != nil {
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t.Fatal("lstat failed:", err)
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}
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if !equal(sfname, dir.Name()) {
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t.Error("name should be ", sfname, "; is", dir.Name())
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}
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filesize := size(path, t)
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if dir.Size() != filesize {
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t.Error("size should be", filesize, "; is", dir.Size())
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}
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}
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// Read with length 0 should not return EOF.
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func TestRead0(t *testing.T) {
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path := sfdir + "/" + sfname
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f, err := Open(path)
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if err != nil {
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t.Fatal("open failed:", err)
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}
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defer f.Close()
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b := make([]byte, 0)
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n, err := f.Read(b)
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if n != 0 || err != nil {
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t.Errorf("Read(0) = %d, %v, want 0, nil", n, err)
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}
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b = make([]byte, 100)
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n, err = f.Read(b)
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if n <= 0 || err != nil {
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t.Errorf("Read(100) = %d, %v, want >0, nil", n, err)
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}
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}
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// Reading a closed file should return ErrClosed error
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func TestReadClosed(t *testing.T) {
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path := sfdir + "/" + sfname
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file, err := Open(path)
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if err != nil {
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t.Fatal("open failed:", err)
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}
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file.Close() // close immediately
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b := make([]byte, 100)
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_, err = file.Read(b)
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e, ok := err.(*PathError)
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if !ok {
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t.Fatalf("Read: %T(%v), want PathError", e, e)
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}
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if e.Err != ErrClosed {
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t.Errorf("Read: %v, want PathError(ErrClosed)", e)
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}
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}
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func testReaddirnames(dir string, contents []string, t *testing.T) {
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file, err := Open(dir)
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if err != nil {
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t.Fatalf("open %q failed: %v", dir, err)
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}
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defer file.Close()
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s, err2 := file.Readdirnames(-1)
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if err2 != nil {
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t.Fatalf("Readdirnames %q failed: %v", dir, err2)
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}
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for _, m := range contents {
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found := false
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for _, n := range s {
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if n == "." || n == ".." {
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t.Errorf("got %q in directory", n)
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}
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if !equal(m, n) {
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continue
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}
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if found {
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t.Error("present twice:", m)
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}
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found = true
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}
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if !found {
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t.Error("could not find", m)
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}
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}
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if s == nil {
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t.Error("Readdirnames returned nil instead of empty slice")
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}
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}
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func testReaddir(dir string, contents []string, t *testing.T) {
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file, err := Open(dir)
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if err != nil {
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t.Fatalf("open %q failed: %v", dir, err)
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}
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defer file.Close()
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s, err2 := file.Readdir(-1)
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if err2 != nil {
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t.Fatalf("Readdir %q failed: %v", dir, err2)
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}
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for _, m := range contents {
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found := false
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for _, n := range s {
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if n.Name() == "." || n.Name() == ".." {
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t.Errorf("got %q in directory", n.Name())
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}
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if !equal(m, n.Name()) {
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continue
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}
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if found {
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t.Error("present twice:", m)
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}
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found = true
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}
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if !found {
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t.Error("could not find", m)
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}
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}
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if s == nil {
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t.Error("Readdir returned nil instead of empty slice")
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}
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}
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func testReadDir(dir string, contents []string, t *testing.T) {
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file, err := Open(dir)
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if err != nil {
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t.Fatalf("open %q failed: %v", dir, err)
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}
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defer file.Close()
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s, err2 := file.ReadDir(-1)
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if err2 != nil {
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t.Fatalf("ReadDir %q failed: %v", dir, err2)
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}
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for _, m := range contents {
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found := false
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for _, n := range s {
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if n.Name() == "." || n.Name() == ".." {
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t.Errorf("got %q in directory", n)
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}
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if !equal(m, n.Name()) {
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continue
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}
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if found {
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t.Error("present twice:", m)
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}
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found = true
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lstat, err := Lstat(dir + "/" + m)
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if err != nil {
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t.Fatal(err)
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}
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if n.IsDir() != lstat.IsDir() {
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t.Errorf("%s: IsDir=%v, want %v", m, n.IsDir(), lstat.IsDir())
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}
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if n.Type() != lstat.Mode().Type() {
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t.Errorf("%s: IsDir=%v, want %v", m, n.Type(), lstat.Mode().Type())
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}
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info, err := n.Info()
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if err != nil {
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t.Errorf("%s: Info: %v", m, err)
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continue
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}
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if !SameFile(info, lstat) {
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t.Errorf("%s: Info: SameFile(info, lstat) = false", m)
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}
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}
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if !found {
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t.Error("could not find", m)
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}
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}
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if s == nil {
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t.Error("ReadDir returned nil instead of empty slice")
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}
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}
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func TestFileReaddirnames(t *testing.T) {
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testReaddirnames(".", dot, t)
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testReaddirnames(sysdir.name, sysdir.files, t)
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testReaddirnames(t.TempDir(), nil, t)
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}
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func TestFileReaddir(t *testing.T) {
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testReaddir(".", dot, t)
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testReaddir(sysdir.name, sysdir.files, t)
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testReaddir(t.TempDir(), nil, t)
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}
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func TestFileReadDir(t *testing.T) {
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testReadDir(".", dot, t)
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testReadDir(sysdir.name, sysdir.files, t)
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testReadDir(t.TempDir(), nil, t)
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}
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func benchmarkReaddirname(path string, b *testing.B) {
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var nentries int
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for i := 0; i < b.N; i++ {
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f, err := Open(path)
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if err != nil {
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b.Fatalf("open %q failed: %v", path, err)
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}
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ns, err := f.Readdirnames(-1)
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f.Close()
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if err != nil {
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b.Fatalf("readdirnames %q failed: %v", path, err)
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}
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nentries = len(ns)
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}
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b.Logf("benchmarkReaddirname %q: %d entries", path, nentries)
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}
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func benchmarkReaddir(path string, b *testing.B) {
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var nentries int
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for i := 0; i < b.N; i++ {
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f, err := Open(path)
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if err != nil {
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b.Fatalf("open %q failed: %v", path, err)
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}
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fs, err := f.Readdir(-1)
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f.Close()
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if err != nil {
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b.Fatalf("readdir %q failed: %v", path, err)
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}
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nentries = len(fs)
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}
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b.Logf("benchmarkReaddir %q: %d entries", path, nentries)
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}
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func benchmarkReadDir(path string, b *testing.B) {
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var nentries int
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for i := 0; i < b.N; i++ {
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f, err := Open(path)
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if err != nil {
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b.Fatalf("open %q failed: %v", path, err)
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}
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fs, err := f.ReadDir(-1)
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f.Close()
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if err != nil {
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b.Fatalf("readdir %q failed: %v", path, err)
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}
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nentries = len(fs)
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}
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b.Logf("benchmarkReadDir %q: %d entries", path, nentries)
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}
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func BenchmarkReaddirname(b *testing.B) {
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benchmarkReaddirname(".", b)
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}
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func BenchmarkReaddir(b *testing.B) {
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benchmarkReaddir(".", b)
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}
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func BenchmarkReadDir(b *testing.B) {
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benchmarkReadDir(".", b)
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}
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func benchmarkStat(b *testing.B, path string) {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_, err := Stat(path)
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if err != nil {
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b.Fatalf("Stat(%q) failed: %v", path, err)
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}
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}
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}
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|
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func benchmarkLstat(b *testing.B, path string) {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_, err := Lstat(path)
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if err != nil {
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b.Fatalf("Lstat(%q) failed: %v", path, err)
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}
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}
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}
|
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|
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func BenchmarkStatDot(b *testing.B) {
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benchmarkStat(b, ".")
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}
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func BenchmarkStatFile(b *testing.B) {
|
|
benchmarkStat(b, filepath.Join(runtime.GOROOT(), "src/os/os_test.go"))
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}
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|
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func BenchmarkStatDir(b *testing.B) {
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benchmarkStat(b, filepath.Join(runtime.GOROOT(), "src/os"))
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}
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|
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func BenchmarkLstatDot(b *testing.B) {
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benchmarkLstat(b, ".")
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}
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func BenchmarkLstatFile(b *testing.B) {
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benchmarkLstat(b, filepath.Join(runtime.GOROOT(), "src/os/os_test.go"))
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}
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|
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func BenchmarkLstatDir(b *testing.B) {
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benchmarkLstat(b, filepath.Join(runtime.GOROOT(), "src/os"))
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}
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|
|
// Read the directory one entry at a time.
|
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func smallReaddirnames(file *File, length int, t *testing.T) []string {
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names := make([]string, length)
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count := 0
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for {
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d, err := file.Readdirnames(1)
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|
if err == io.EOF {
|
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break
|
|
}
|
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if err != nil {
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t.Fatalf("readdirnames %q failed: %v", file.Name(), err)
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}
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if len(d) == 0 {
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t.Fatalf("readdirnames %q returned empty slice and no error", file.Name())
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}
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names[count] = d[0]
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count++
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}
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return names[0:count]
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}
|
|
|
|
// Check that reading a directory one entry at a time gives the same result
|
|
// as reading it all at once.
|
|
func TestReaddirnamesOneAtATime(t *testing.T) {
|
|
// big directory that doesn't change often.
|
|
dir := "/usr/bin"
|
|
switch runtime.GOOS {
|
|
case "android":
|
|
dir = "/system/bin"
|
|
case "ios":
|
|
wd, err := Getwd()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
dir = wd
|
|
case "plan9":
|
|
dir = "/bin"
|
|
case "windows":
|
|
dir = Getenv("SystemRoot") + "\\system32"
|
|
}
|
|
file, err := Open(dir)
|
|
if err != nil {
|
|
t.Fatalf("open %q failed: %v", dir, err)
|
|
}
|
|
defer file.Close()
|
|
all, err1 := file.Readdirnames(-1)
|
|
if err1 != nil {
|
|
t.Fatalf("readdirnames %q failed: %v", dir, err1)
|
|
}
|
|
file1, err2 := Open(dir)
|
|
if err2 != nil {
|
|
t.Fatalf("open %q failed: %v", dir, err2)
|
|
}
|
|
defer file1.Close()
|
|
small := smallReaddirnames(file1, len(all)+100, t) // +100 in case we screw up
|
|
if len(small) < len(all) {
|
|
t.Fatalf("len(small) is %d, less than %d", len(small), len(all))
|
|
}
|
|
for i, n := range all {
|
|
if small[i] != n {
|
|
t.Errorf("small read %q mismatch: %v", small[i], n)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReaddirNValues(t *testing.T) {
|
|
if testing.Short() {
|
|
t.Skip("test.short; skipping")
|
|
}
|
|
dir := t.TempDir()
|
|
for i := 1; i <= 105; i++ {
|
|
f, err := Create(filepath.Join(dir, fmt.Sprintf("%d", i)))
|
|
if err != nil {
|
|
t.Fatalf("Create: %v", err)
|
|
}
|
|
f.Write([]byte(strings.Repeat("X", i)))
|
|
f.Close()
|
|
}
|
|
|
|
var d *File
|
|
openDir := func() {
|
|
var err error
|
|
d, err = Open(dir)
|
|
if err != nil {
|
|
t.Fatalf("Open directory: %v", err)
|
|
}
|
|
}
|
|
|
|
readdirExpect := func(n, want int, wantErr error) {
|
|
t.Helper()
|
|
fi, err := d.Readdir(n)
|
|
if err != wantErr {
|
|
t.Fatalf("Readdir of %d got error %v, want %v", n, err, wantErr)
|
|
}
|
|
if g, e := len(fi), want; g != e {
|
|
t.Errorf("Readdir of %d got %d files, want %d", n, g, e)
|
|
}
|
|
}
|
|
|
|
readDirExpect := func(n, want int, wantErr error) {
|
|
t.Helper()
|
|
de, err := d.ReadDir(n)
|
|
if err != wantErr {
|
|
t.Fatalf("ReadDir of %d got error %v, want %v", n, err, wantErr)
|
|
}
|
|
if g, e := len(de), want; g != e {
|
|
t.Errorf("ReadDir of %d got %d files, want %d", n, g, e)
|
|
}
|
|
}
|
|
|
|
readdirnamesExpect := func(n, want int, wantErr error) {
|
|
t.Helper()
|
|
fi, err := d.Readdirnames(n)
|
|
if err != wantErr {
|
|
t.Fatalf("Readdirnames of %d got error %v, want %v", n, err, wantErr)
|
|
}
|
|
if g, e := len(fi), want; g != e {
|
|
t.Errorf("Readdirnames of %d got %d files, want %d", n, g, e)
|
|
}
|
|
}
|
|
|
|
for _, fn := range []func(int, int, error){readdirExpect, readdirnamesExpect, readDirExpect} {
|
|
// Test the slurp case
|
|
openDir()
|
|
fn(0, 105, nil)
|
|
fn(0, 0, nil)
|
|
d.Close()
|
|
|
|
// Slurp with -1 instead
|
|
openDir()
|
|
fn(-1, 105, nil)
|
|
fn(-2, 0, nil)
|
|
fn(0, 0, nil)
|
|
d.Close()
|
|
|
|
// Test the bounded case
|
|
openDir()
|
|
fn(1, 1, nil)
|
|
fn(2, 2, nil)
|
|
fn(105, 102, nil) // and tests buffer >100 case
|
|
fn(3, 0, io.EOF)
|
|
d.Close()
|
|
}
|
|
}
|
|
|
|
func touch(t *testing.T, name string) {
|
|
f, err := Create(name)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := f.Close(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestReaddirStatFailures(t *testing.T) {
|
|
switch runtime.GOOS {
|
|
case "windows", "plan9":
|
|
// Windows and Plan 9 already do this correctly,
|
|
// but are structured with different syscalls such
|
|
// that they don't use Lstat, so the hook below for
|
|
// testing it wouldn't work.
|
|
t.Skipf("skipping test on %v", runtime.GOOS)
|
|
}
|
|
dir := t.TempDir()
|
|
touch(t, filepath.Join(dir, "good1"))
|
|
touch(t, filepath.Join(dir, "x")) // will disappear or have an error
|
|
touch(t, filepath.Join(dir, "good2"))
|
|
defer func() {
|
|
*LstatP = Lstat
|
|
}()
|
|
var xerr error // error to return for x
|
|
*LstatP = func(path string) (FileInfo, error) {
|
|
if xerr != nil && strings.HasSuffix(path, "x") {
|
|
return nil, xerr
|
|
}
|
|
return Lstat(path)
|
|
}
|
|
readDir := func() ([]FileInfo, error) {
|
|
d, err := Open(dir)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer d.Close()
|
|
return d.Readdir(-1)
|
|
}
|
|
mustReadDir := func(testName string) []FileInfo {
|
|
fis, err := readDir()
|
|
if err != nil {
|
|
t.Fatalf("%s: Readdir: %v", testName, err)
|
|
}
|
|
return fis
|
|
}
|
|
names := func(fis []FileInfo) []string {
|
|
s := make([]string, len(fis))
|
|
for i, fi := range fis {
|
|
s[i] = fi.Name()
|
|
}
|
|
sort.Strings(s)
|
|
return s
|
|
}
|
|
|
|
if got, want := names(mustReadDir("initial readdir")),
|
|
[]string{"good1", "good2", "x"}; !reflect.DeepEqual(got, want) {
|
|
t.Errorf("initial readdir got %q; want %q", got, want)
|
|
}
|
|
|
|
xerr = ErrNotExist
|
|
if got, want := names(mustReadDir("with x disappearing")),
|
|
[]string{"good1", "good2"}; !reflect.DeepEqual(got, want) {
|
|
t.Errorf("with x disappearing, got %q; want %q", got, want)
|
|
}
|
|
|
|
xerr = errors.New("some real error")
|
|
if _, err := readDir(); err != xerr {
|
|
t.Errorf("with a non-ErrNotExist error, got error %v; want %v", err, xerr)
|
|
}
|
|
}
|
|
|
|
// Readdir on a regular file should fail.
|
|
func TestReaddirOfFile(t *testing.T) {
|
|
f, err := os.CreateTemp("", "_Go_ReaddirOfFile")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer Remove(f.Name())
|
|
f.Write([]byte("foo"))
|
|
f.Close()
|
|
reg, err := Open(f.Name())
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer reg.Close()
|
|
|
|
names, err := reg.Readdirnames(-1)
|
|
if err == nil {
|
|
t.Error("Readdirnames succeeded; want non-nil error")
|
|
}
|
|
var pe *PathError
|
|
if !errors.As(err, &pe) || pe.Path != f.Name() {
|
|
t.Errorf("Readdirnames returned %q; want a PathError with path %q", err, f.Name())
|
|
}
|
|
if len(names) > 0 {
|
|
t.Errorf("unexpected dir names in regular file: %q", names)
|
|
}
|
|
}
|
|
|
|
func TestHardLink(t *testing.T) {
|
|
testenv.MustHaveLink(t)
|
|
|
|
defer chtmpdir(t)()
|
|
from, to := "hardlinktestfrom", "hardlinktestto"
|
|
file, err := Create(to)
|
|
if err != nil {
|
|
t.Fatalf("open %q failed: %v", to, err)
|
|
}
|
|
if err = file.Close(); err != nil {
|
|
t.Errorf("close %q failed: %v", to, err)
|
|
}
|
|
err = Link(to, from)
|
|
if err != nil {
|
|
t.Fatalf("link %q, %q failed: %v", to, from, err)
|
|
}
|
|
|
|
none := "hardlinktestnone"
|
|
err = Link(none, none)
|
|
// Check the returned error is well-formed.
|
|
if lerr, ok := err.(*LinkError); !ok || lerr.Error() == "" {
|
|
t.Errorf("link %q, %q failed to return a valid error", none, none)
|
|
}
|
|
|
|
tostat, err := Stat(to)
|
|
if err != nil {
|
|
t.Fatalf("stat %q failed: %v", to, err)
|
|
}
|
|
fromstat, err := Stat(from)
|
|
if err != nil {
|
|
t.Fatalf("stat %q failed: %v", from, err)
|
|
}
|
|
if !SameFile(tostat, fromstat) {
|
|
t.Errorf("link %q, %q did not create hard link", to, from)
|
|
}
|
|
// We should not be able to perform the same Link() a second time
|
|
err = Link(to, from)
|
|
switch err := err.(type) {
|
|
case *LinkError:
|
|
if err.Op != "link" {
|
|
t.Errorf("Link(%q, %q) err.Op = %q; want %q", to, from, err.Op, "link")
|
|
}
|
|
if err.Old != to {
|
|
t.Errorf("Link(%q, %q) err.Old = %q; want %q", to, from, err.Old, to)
|
|
}
|
|
if err.New != from {
|
|
t.Errorf("Link(%q, %q) err.New = %q; want %q", to, from, err.New, from)
|
|
}
|
|
if !IsExist(err.Err) {
|
|
t.Errorf("Link(%q, %q) err.Err = %q; want %q", to, from, err.Err, "file exists error")
|
|
}
|
|
case nil:
|
|
t.Errorf("link %q, %q: expected error, got nil", from, to)
|
|
default:
|
|
t.Errorf("link %q, %q: expected %T, got %T %v", from, to, new(LinkError), err, err)
|
|
}
|
|
}
|
|
|
|
// chtmpdir changes the working directory to a new temporary directory and
|
|
// provides a cleanup function.
|
|
func chtmpdir(t *testing.T) func() {
|
|
oldwd, err := Getwd()
|
|
if err != nil {
|
|
t.Fatalf("chtmpdir: %v", err)
|
|
}
|
|
d, err := os.MkdirTemp("", "test")
|
|
if err != nil {
|
|
t.Fatalf("chtmpdir: %v", err)
|
|
}
|
|
if err := Chdir(d); err != nil {
|
|
t.Fatalf("chtmpdir: %v", err)
|
|
}
|
|
return func() {
|
|
if err := Chdir(oldwd); err != nil {
|
|
t.Fatalf("chtmpdir: %v", err)
|
|
}
|
|
RemoveAll(d)
|
|
}
|
|
}
|
|
|
|
func TestSymlink(t *testing.T) {
|
|
testenv.MustHaveSymlink(t)
|
|
|
|
defer chtmpdir(t)()
|
|
from, to := "symlinktestfrom", "symlinktestto"
|
|
file, err := Create(to)
|
|
if err != nil {
|
|
t.Fatalf("Create(%q) failed: %v", to, err)
|
|
}
|
|
if err = file.Close(); err != nil {
|
|
t.Errorf("Close(%q) failed: %v", to, err)
|
|
}
|
|
err = Symlink(to, from)
|
|
if err != nil {
|
|
t.Fatalf("Symlink(%q, %q) failed: %v", to, from, err)
|
|
}
|
|
tostat, err := Lstat(to)
|
|
if err != nil {
|
|
t.Fatalf("Lstat(%q) failed: %v", to, err)
|
|
}
|
|
if tostat.Mode()&ModeSymlink != 0 {
|
|
t.Fatalf("Lstat(%q).Mode()&ModeSymlink = %v, want 0", to, tostat.Mode()&ModeSymlink)
|
|
}
|
|
fromstat, err := Stat(from)
|
|
if err != nil {
|
|
t.Fatalf("Stat(%q) failed: %v", from, err)
|
|
}
|
|
if !SameFile(tostat, fromstat) {
|
|
t.Errorf("Symlink(%q, %q) did not create symlink", to, from)
|
|
}
|
|
fromstat, err = Lstat(from)
|
|
if err != nil {
|
|
t.Fatalf("Lstat(%q) failed: %v", from, err)
|
|
}
|
|
if fromstat.Mode()&ModeSymlink == 0 {
|
|
t.Fatalf("Lstat(%q).Mode()&ModeSymlink = 0, want %v", from, ModeSymlink)
|
|
}
|
|
fromstat, err = Stat(from)
|
|
if err != nil {
|
|
t.Fatalf("Stat(%q) failed: %v", from, err)
|
|
}
|
|
if fromstat.Name() != from {
|
|
t.Errorf("Stat(%q).Name() = %q, want %q", from, fromstat.Name(), from)
|
|
}
|
|
if fromstat.Mode()&ModeSymlink != 0 {
|
|
t.Fatalf("Stat(%q).Mode()&ModeSymlink = %v, want 0", from, fromstat.Mode()&ModeSymlink)
|
|
}
|
|
s, err := Readlink(from)
|
|
if err != nil {
|
|
t.Fatalf("Readlink(%q) failed: %v", from, err)
|
|
}
|
|
if s != to {
|
|
t.Fatalf("Readlink(%q) = %q, want %q", from, s, to)
|
|
}
|
|
file, err = Open(from)
|
|
if err != nil {
|
|
t.Fatalf("Open(%q) failed: %v", from, err)
|
|
}
|
|
file.Close()
|
|
}
|
|
|
|
func TestLongSymlink(t *testing.T) {
|
|
testenv.MustHaveSymlink(t)
|
|
|
|
defer chtmpdir(t)()
|
|
s := "0123456789abcdef"
|
|
// Long, but not too long: a common limit is 255.
|
|
s = s + s + s + s + s + s + s + s + s + s + s + s + s + s + s
|
|
from := "longsymlinktestfrom"
|
|
err := Symlink(s, from)
|
|
if err != nil {
|
|
t.Fatalf("symlink %q, %q failed: %v", s, from, err)
|
|
}
|
|
r, err := Readlink(from)
|
|
if err != nil {
|
|
t.Fatalf("readlink %q failed: %v", from, err)
|
|
}
|
|
if r != s {
|
|
t.Fatalf("after symlink %q != %q", r, s)
|
|
}
|
|
}
|
|
|
|
func TestRename(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
from, to := "renamefrom", "renameto"
|
|
|
|
file, err := Create(from)
|
|
if err != nil {
|
|
t.Fatalf("open %q failed: %v", from, err)
|
|
}
|
|
if err = file.Close(); err != nil {
|
|
t.Errorf("close %q failed: %v", from, err)
|
|
}
|
|
err = Rename(from, to)
|
|
if err != nil {
|
|
t.Fatalf("rename %q, %q failed: %v", to, from, err)
|
|
}
|
|
_, err = Stat(to)
|
|
if err != nil {
|
|
t.Errorf("stat %q failed: %v", to, err)
|
|
}
|
|
}
|
|
|
|
func TestRenameOverwriteDest(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
from, to := "renamefrom", "renameto"
|
|
|
|
toData := []byte("to")
|
|
fromData := []byte("from")
|
|
|
|
err := os.WriteFile(to, toData, 0777)
|
|
if err != nil {
|
|
t.Fatalf("write file %q failed: %v", to, err)
|
|
}
|
|
|
|
err = os.WriteFile(from, fromData, 0777)
|
|
if err != nil {
|
|
t.Fatalf("write file %q failed: %v", from, err)
|
|
}
|
|
err = Rename(from, to)
|
|
if err != nil {
|
|
t.Fatalf("rename %q, %q failed: %v", to, from, err)
|
|
}
|
|
|
|
_, err = Stat(from)
|
|
if err == nil {
|
|
t.Errorf("from file %q still exists", from)
|
|
}
|
|
if err != nil && !IsNotExist(err) {
|
|
t.Fatalf("stat from: %v", err)
|
|
}
|
|
toFi, err := Stat(to)
|
|
if err != nil {
|
|
t.Fatalf("stat %q failed: %v", to, err)
|
|
}
|
|
if toFi.Size() != int64(len(fromData)) {
|
|
t.Errorf(`"to" size = %d; want %d (old "from" size)`, toFi.Size(), len(fromData))
|
|
}
|
|
}
|
|
|
|
func TestRenameFailed(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
from, to := "renamefrom", "renameto"
|
|
|
|
err := Rename(from, to)
|
|
switch err := err.(type) {
|
|
case *LinkError:
|
|
if err.Op != "rename" {
|
|
t.Errorf("rename %q, %q: err.Op: want %q, got %q", from, to, "rename", err.Op)
|
|
}
|
|
if err.Old != from {
|
|
t.Errorf("rename %q, %q: err.Old: want %q, got %q", from, to, from, err.Old)
|
|
}
|
|
if err.New != to {
|
|
t.Errorf("rename %q, %q: err.New: want %q, got %q", from, to, to, err.New)
|
|
}
|
|
case nil:
|
|
t.Errorf("rename %q, %q: expected error, got nil", from, to)
|
|
default:
|
|
t.Errorf("rename %q, %q: expected %T, got %T %v", from, to, new(LinkError), err, err)
|
|
}
|
|
}
|
|
|
|
func TestRenameNotExisting(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
from, to := "doesnt-exist", "dest"
|
|
|
|
Mkdir(to, 0777)
|
|
|
|
if err := Rename(from, to); !IsNotExist(err) {
|
|
t.Errorf("Rename(%q, %q) = %v; want an IsNotExist error", from, to, err)
|
|
}
|
|
}
|
|
|
|
func TestRenameToDirFailed(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
from, to := "renamefrom", "renameto"
|
|
|
|
Mkdir(from, 0777)
|
|
Mkdir(to, 0777)
|
|
|
|
err := Rename(from, to)
|
|
switch err := err.(type) {
|
|
case *LinkError:
|
|
if err.Op != "rename" {
|
|
t.Errorf("rename %q, %q: err.Op: want %q, got %q", from, to, "rename", err.Op)
|
|
}
|
|
if err.Old != from {
|
|
t.Errorf("rename %q, %q: err.Old: want %q, got %q", from, to, from, err.Old)
|
|
}
|
|
if err.New != to {
|
|
t.Errorf("rename %q, %q: err.New: want %q, got %q", from, to, to, err.New)
|
|
}
|
|
case nil:
|
|
t.Errorf("rename %q, %q: expected error, got nil", from, to)
|
|
default:
|
|
t.Errorf("rename %q, %q: expected %T, got %T %v", from, to, new(LinkError), err, err)
|
|
}
|
|
}
|
|
|
|
func TestRenameCaseDifference(pt *testing.T) {
|
|
from, to := "renameFROM", "RENAMEfrom"
|
|
tests := []struct {
|
|
name string
|
|
create func() error
|
|
}{
|
|
{"dir", func() error {
|
|
return Mkdir(from, 0777)
|
|
}},
|
|
{"file", func() error {
|
|
fd, err := Create(from)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return fd.Close()
|
|
}},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
pt.Run(test.name, func(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
|
|
if err := test.create(); err != nil {
|
|
t.Fatalf("failed to create test file: %s", err)
|
|
}
|
|
|
|
if _, err := Stat(to); err != nil {
|
|
// Sanity check that the underlying filesystem is not case sensitive.
|
|
if IsNotExist(err) {
|
|
t.Skipf("case sensitive filesystem")
|
|
}
|
|
t.Fatalf("stat %q, got: %q", to, err)
|
|
}
|
|
|
|
if err := Rename(from, to); err != nil {
|
|
t.Fatalf("unexpected error when renaming from %q to %q: %s", from, to, err)
|
|
}
|
|
|
|
fd, err := Open(".")
|
|
if err != nil {
|
|
t.Fatalf("Open .: %s", err)
|
|
}
|
|
|
|
// Stat does not return the real case of the file (it returns what the called asked for)
|
|
// So we have to use readdir to get the real name of the file.
|
|
dirNames, err := fd.Readdirnames(-1)
|
|
if err != nil {
|
|
t.Fatalf("readdirnames: %s", err)
|
|
}
|
|
|
|
if dirNamesLen := len(dirNames); dirNamesLen != 1 {
|
|
t.Fatalf("unexpected dirNames len, got %q, want %q", dirNamesLen, 1)
|
|
}
|
|
|
|
if dirNames[0] != to {
|
|
t.Errorf("unexpected name, got %q, want %q", dirNames[0], to)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func exec(t *testing.T, dir, cmd string, args []string, expect string) {
|
|
r, w, err := Pipe()
|
|
if err != nil {
|
|
t.Fatalf("Pipe: %v", err)
|
|
}
|
|
defer r.Close()
|
|
attr := &ProcAttr{Dir: dir, Files: []*File{nil, w, Stderr}}
|
|
p, err := StartProcess(cmd, args, attr)
|
|
if err != nil {
|
|
t.Fatalf("StartProcess: %v", err)
|
|
}
|
|
w.Close()
|
|
|
|
var b bytes.Buffer
|
|
io.Copy(&b, r)
|
|
output := b.String()
|
|
|
|
fi1, _ := Stat(strings.TrimSpace(output))
|
|
fi2, _ := Stat(expect)
|
|
if !SameFile(fi1, fi2) {
|
|
t.Errorf("exec %q returned %q wanted %q",
|
|
strings.Join(append([]string{cmd}, args...), " "), output, expect)
|
|
}
|
|
p.Wait()
|
|
}
|
|
|
|
func TestStartProcess(t *testing.T) {
|
|
testenv.MustHaveExec(t)
|
|
|
|
var dir, cmd string
|
|
var args []string
|
|
switch runtime.GOOS {
|
|
case "android":
|
|
t.Skip("android doesn't have /bin/pwd")
|
|
case "windows":
|
|
cmd = Getenv("COMSPEC")
|
|
dir = Getenv("SystemRoot")
|
|
args = []string{"/c", "cd"}
|
|
default:
|
|
var err error
|
|
cmd, err = osexec.LookPath("pwd")
|
|
if err != nil {
|
|
t.Fatalf("Can't find pwd: %v", err)
|
|
}
|
|
dir = "/"
|
|
args = []string{}
|
|
t.Logf("Testing with %v", cmd)
|
|
}
|
|
cmddir, cmdbase := filepath.Split(cmd)
|
|
args = append([]string{cmdbase}, args...)
|
|
// Test absolute executable path.
|
|
exec(t, dir, cmd, args, dir)
|
|
// Test relative executable path.
|
|
exec(t, cmddir, cmdbase, args, cmddir)
|
|
}
|
|
|
|
func checkMode(t *testing.T, path string, mode FileMode) {
|
|
dir, err := Stat(path)
|
|
if err != nil {
|
|
t.Fatalf("Stat %q (looking for mode %#o): %s", path, mode, err)
|
|
}
|
|
if dir.Mode()&ModePerm != mode {
|
|
t.Errorf("Stat %q: mode %#o want %#o", path, dir.Mode(), mode)
|
|
}
|
|
}
|
|
|
|
func TestChmod(t *testing.T) {
|
|
f := newFile("TestChmod", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
// Creation mode is read write
|
|
|
|
fm := FileMode(0456)
|
|
if runtime.GOOS == "windows" {
|
|
fm = FileMode(0444) // read-only file
|
|
}
|
|
if err := Chmod(f.Name(), fm); err != nil {
|
|
t.Fatalf("chmod %s %#o: %s", f.Name(), fm, err)
|
|
}
|
|
checkMode(t, f.Name(), fm)
|
|
|
|
fm = FileMode(0123)
|
|
if runtime.GOOS == "windows" {
|
|
fm = FileMode(0666) // read-write file
|
|
}
|
|
if err := f.Chmod(fm); err != nil {
|
|
t.Fatalf("chmod %s %#o: %s", f.Name(), fm, err)
|
|
}
|
|
checkMode(t, f.Name(), fm)
|
|
}
|
|
|
|
func checkSize(t *testing.T, f *File, size int64) {
|
|
t.Helper()
|
|
dir, err := f.Stat()
|
|
if err != nil {
|
|
t.Fatalf("Stat %q (looking for size %d): %s", f.Name(), size, err)
|
|
}
|
|
if dir.Size() != size {
|
|
t.Errorf("Stat %q: size %d want %d", f.Name(), dir.Size(), size)
|
|
}
|
|
}
|
|
|
|
func TestFTruncate(t *testing.T) {
|
|
f := newFile("TestFTruncate", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
checkSize(t, f, 0)
|
|
f.Write([]byte("hello, world\n"))
|
|
checkSize(t, f, 13)
|
|
f.Truncate(10)
|
|
checkSize(t, f, 10)
|
|
f.Truncate(1024)
|
|
checkSize(t, f, 1024)
|
|
f.Truncate(0)
|
|
checkSize(t, f, 0)
|
|
_, err := f.Write([]byte("surprise!"))
|
|
if err == nil {
|
|
checkSize(t, f, 13+9) // wrote at offset past where hello, world was.
|
|
}
|
|
}
|
|
|
|
func TestTruncate(t *testing.T) {
|
|
f := newFile("TestTruncate", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
checkSize(t, f, 0)
|
|
f.Write([]byte("hello, world\n"))
|
|
checkSize(t, f, 13)
|
|
Truncate(f.Name(), 10)
|
|
checkSize(t, f, 10)
|
|
Truncate(f.Name(), 1024)
|
|
checkSize(t, f, 1024)
|
|
Truncate(f.Name(), 0)
|
|
checkSize(t, f, 0)
|
|
_, err := f.Write([]byte("surprise!"))
|
|
if err == nil {
|
|
checkSize(t, f, 13+9) // wrote at offset past where hello, world was.
|
|
}
|
|
}
|
|
|
|
// Use TempDir (via newFile) to make sure we're on a local file system,
|
|
// so that timings are not distorted by latency and caching.
|
|
// On NFS, timings can be off due to caching of meta-data on
|
|
// NFS servers (Issue 848).
|
|
func TestChtimes(t *testing.T) {
|
|
f := newFile("TestChtimes", t)
|
|
defer Remove(f.Name())
|
|
|
|
f.Write([]byte("hello, world\n"))
|
|
f.Close()
|
|
|
|
testChtimes(t, f.Name())
|
|
}
|
|
|
|
// Use TempDir (via newDir) to make sure we're on a local file system,
|
|
// so that timings are not distorted by latency and caching.
|
|
// On NFS, timings can be off due to caching of meta-data on
|
|
// NFS servers (Issue 848).
|
|
func TestChtimesDir(t *testing.T) {
|
|
name := newDir("TestChtimes", t)
|
|
defer RemoveAll(name)
|
|
|
|
testChtimes(t, name)
|
|
}
|
|
|
|
func testChtimes(t *testing.T, name string) {
|
|
st, err := Stat(name)
|
|
if err != nil {
|
|
t.Fatalf("Stat %s: %s", name, err)
|
|
}
|
|
preStat := st
|
|
|
|
// Move access and modification time back a second
|
|
at := Atime(preStat)
|
|
mt := preStat.ModTime()
|
|
err = Chtimes(name, at.Add(-time.Second), mt.Add(-time.Second))
|
|
if err != nil {
|
|
t.Fatalf("Chtimes %s: %s", name, err)
|
|
}
|
|
|
|
st, err = Stat(name)
|
|
if err != nil {
|
|
t.Fatalf("second Stat %s: %s", name, err)
|
|
}
|
|
postStat := st
|
|
|
|
pat := Atime(postStat)
|
|
pmt := postStat.ModTime()
|
|
if !pat.Before(at) {
|
|
switch runtime.GOOS {
|
|
case "plan9":
|
|
// Mtime is the time of the last change of
|
|
// content. Similarly, atime is set whenever
|
|
// the contents are accessed; also, it is set
|
|
// whenever mtime is set.
|
|
case "netbsd":
|
|
mounts, _ := os.ReadFile("/proc/mounts")
|
|
if strings.Contains(string(mounts), "noatime") {
|
|
t.Logf("AccessTime didn't go backwards, but see a filesystem mounted noatime; ignoring. Issue 19293.")
|
|
} else {
|
|
t.Logf("AccessTime didn't go backwards; was=%v, after=%v (Ignoring on NetBSD, assuming noatime, Issue 19293)", at, pat)
|
|
}
|
|
default:
|
|
t.Errorf("AccessTime didn't go backwards; was=%v, after=%v", at, pat)
|
|
}
|
|
}
|
|
|
|
if !pmt.Before(mt) {
|
|
t.Errorf("ModTime didn't go backwards; was=%v, after=%v", mt, pmt)
|
|
}
|
|
}
|
|
|
|
func TestFileChdir(t *testing.T) {
|
|
// TODO(brainman): file.Chdir() is not implemented on windows.
|
|
if runtime.GOOS == "windows" {
|
|
return
|
|
}
|
|
|
|
wd, err := Getwd()
|
|
if err != nil {
|
|
t.Fatalf("Getwd: %s", err)
|
|
}
|
|
defer Chdir(wd)
|
|
|
|
fd, err := Open(".")
|
|
if err != nil {
|
|
t.Fatalf("Open .: %s", err)
|
|
}
|
|
defer fd.Close()
|
|
|
|
if err := Chdir("/"); err != nil {
|
|
t.Fatalf("Chdir /: %s", err)
|
|
}
|
|
|
|
if err := fd.Chdir(); err != nil {
|
|
t.Fatalf("fd.Chdir: %s", err)
|
|
}
|
|
|
|
wdNew, err := Getwd()
|
|
if err != nil {
|
|
t.Fatalf("Getwd: %s", err)
|
|
}
|
|
if wdNew != wd {
|
|
t.Fatalf("fd.Chdir failed, got %s, want %s", wdNew, wd)
|
|
}
|
|
}
|
|
|
|
func TestChdirAndGetwd(t *testing.T) {
|
|
// TODO(brainman): file.Chdir() is not implemented on windows.
|
|
if runtime.GOOS == "windows" {
|
|
return
|
|
}
|
|
fd, err := Open(".")
|
|
if err != nil {
|
|
t.Fatalf("Open .: %s", err)
|
|
}
|
|
// These are chosen carefully not to be symlinks on a Mac
|
|
// (unlike, say, /var, /etc), except /tmp, which we handle below.
|
|
dirs := []string{"/", "/usr/bin", "/tmp"}
|
|
// /usr/bin does not usually exist on Plan 9 or Android.
|
|
switch runtime.GOOS {
|
|
case "android":
|
|
dirs = []string{"/system/bin"}
|
|
case "plan9":
|
|
dirs = []string{"/", "/usr"}
|
|
case "ios":
|
|
dirs = nil
|
|
for _, d := range []string{"d1", "d2"} {
|
|
dir, err := os.MkdirTemp("", d)
|
|
if err != nil {
|
|
t.Fatalf("TempDir: %v", err)
|
|
}
|
|
// Expand symlinks so path equality tests work.
|
|
dir, err = filepath.EvalSymlinks(dir)
|
|
if err != nil {
|
|
t.Fatalf("EvalSymlinks: %v", err)
|
|
}
|
|
dirs = append(dirs, dir)
|
|
}
|
|
}
|
|
oldwd := Getenv("PWD")
|
|
for mode := 0; mode < 2; mode++ {
|
|
for _, d := range dirs {
|
|
if mode == 0 {
|
|
err = Chdir(d)
|
|
} else {
|
|
fd1, err1 := Open(d)
|
|
if err1 != nil {
|
|
t.Errorf("Open %s: %s", d, err1)
|
|
continue
|
|
}
|
|
err = fd1.Chdir()
|
|
fd1.Close()
|
|
}
|
|
if d == "/tmp" {
|
|
Setenv("PWD", "/tmp")
|
|
}
|
|
pwd, err1 := Getwd()
|
|
Setenv("PWD", oldwd)
|
|
err2 := fd.Chdir()
|
|
if err2 != nil {
|
|
// We changed the current directory and cannot go back.
|
|
// Don't let the tests continue; they'll scribble
|
|
// all over some other directory.
|
|
fmt.Fprintf(Stderr, "fchdir back to dot failed: %s\n", err2)
|
|
Exit(1)
|
|
}
|
|
if err != nil {
|
|
fd.Close()
|
|
t.Fatalf("Chdir %s: %s", d, err)
|
|
}
|
|
if err1 != nil {
|
|
fd.Close()
|
|
t.Fatalf("Getwd in %s: %s", d, err1)
|
|
}
|
|
if pwd != d {
|
|
fd.Close()
|
|
t.Fatalf("Getwd returned %q want %q", pwd, d)
|
|
}
|
|
}
|
|
}
|
|
fd.Close()
|
|
}
|
|
|
|
// Test that Chdir+Getwd is program-wide.
|
|
func TestProgWideChdir(t *testing.T) {
|
|
const N = 10
|
|
const ErrPwd = "Error!"
|
|
c := make(chan bool)
|
|
cpwd := make(chan string, N)
|
|
for i := 0; i < N; i++ {
|
|
go func(i int) {
|
|
// Lock half the goroutines in their own operating system
|
|
// thread to exercise more scheduler possibilities.
|
|
if i%2 == 1 {
|
|
// On Plan 9, after calling LockOSThread, the goroutines
|
|
// run on different processes which don't share the working
|
|
// directory. This used to be an issue because Go expects
|
|
// the working directory to be program-wide.
|
|
// See issue 9428.
|
|
runtime.LockOSThread()
|
|
}
|
|
hasErr, closed := <-c
|
|
if !closed && hasErr {
|
|
cpwd <- ErrPwd
|
|
return
|
|
}
|
|
pwd, err := Getwd()
|
|
if err != nil {
|
|
t.Errorf("Getwd on goroutine %d: %v", i, err)
|
|
cpwd <- ErrPwd
|
|
return
|
|
}
|
|
cpwd <- pwd
|
|
}(i)
|
|
}
|
|
oldwd, err := Getwd()
|
|
if err != nil {
|
|
c <- true
|
|
t.Fatalf("Getwd: %v", err)
|
|
}
|
|
d, err := os.MkdirTemp("", "test")
|
|
if err != nil {
|
|
c <- true
|
|
t.Fatalf("TempDir: %v", err)
|
|
}
|
|
defer func() {
|
|
if err := Chdir(oldwd); err != nil {
|
|
t.Fatalf("Chdir: %v", err)
|
|
}
|
|
RemoveAll(d)
|
|
}()
|
|
if err := Chdir(d); err != nil {
|
|
c <- true
|
|
t.Fatalf("Chdir: %v", err)
|
|
}
|
|
// OS X sets TMPDIR to a symbolic link.
|
|
// So we resolve our working directory again before the test.
|
|
d, err = Getwd()
|
|
if err != nil {
|
|
c <- true
|
|
t.Fatalf("Getwd: %v", err)
|
|
}
|
|
close(c)
|
|
for i := 0; i < N; i++ {
|
|
pwd := <-cpwd
|
|
if pwd == ErrPwd {
|
|
t.FailNow()
|
|
}
|
|
if pwd != d {
|
|
t.Errorf("Getwd returned %q; want %q", pwd, d)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestSeek(t *testing.T) {
|
|
f := newFile("TestSeek", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
const data = "hello, world\n"
|
|
io.WriteString(f, data)
|
|
|
|
type test struct {
|
|
in int64
|
|
whence int
|
|
out int64
|
|
}
|
|
var tests = []test{
|
|
{0, io.SeekCurrent, int64(len(data))},
|
|
{0, io.SeekStart, 0},
|
|
{5, io.SeekStart, 5},
|
|
{0, io.SeekEnd, int64(len(data))},
|
|
{0, io.SeekStart, 0},
|
|
{-1, io.SeekEnd, int64(len(data)) - 1},
|
|
{1 << 33, io.SeekStart, 1 << 33},
|
|
{1 << 33, io.SeekEnd, 1<<33 + int64(len(data))},
|
|
|
|
// Issue 21681, Windows 4G-1, etc:
|
|
{1<<32 - 1, io.SeekStart, 1<<32 - 1},
|
|
{0, io.SeekCurrent, 1<<32 - 1},
|
|
{2<<32 - 1, io.SeekStart, 2<<32 - 1},
|
|
{0, io.SeekCurrent, 2<<32 - 1},
|
|
}
|
|
for i, tt := range tests {
|
|
if runtime.GOOS == "hurd" && tt.out > 1<<32 {
|
|
t.Logf("skipping test case #%d on Hurd: file too large", i)
|
|
continue
|
|
}
|
|
off, err := f.Seek(tt.in, tt.whence)
|
|
if off != tt.out || err != nil {
|
|
if e, ok := err.(*PathError); ok && e.Err == syscall.EINVAL && tt.out > 1<<32 && runtime.GOOS == "linux" {
|
|
mounts, _ := os.ReadFile("/proc/mounts")
|
|
if strings.Contains(string(mounts), "reiserfs") {
|
|
// Reiserfs rejects the big seeks.
|
|
t.Skipf("skipping test known to fail on reiserfs; https://golang.org/issue/91")
|
|
}
|
|
}
|
|
t.Errorf("#%d: Seek(%v, %v) = %v, %v want %v, nil", i, tt.in, tt.whence, off, err, tt.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestSeekError(t *testing.T) {
|
|
switch runtime.GOOS {
|
|
case "js", "plan9":
|
|
t.Skipf("skipping test on %v", runtime.GOOS)
|
|
}
|
|
|
|
r, w, err := Pipe()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
_, err = r.Seek(0, 0)
|
|
if err == nil {
|
|
t.Fatal("Seek on pipe should fail")
|
|
}
|
|
if perr, ok := err.(*PathError); !ok || perr.Err != syscall.ESPIPE {
|
|
t.Errorf("Seek returned error %v, want &PathError{Err: syscall.ESPIPE}", err)
|
|
}
|
|
_, err = w.Seek(0, 0)
|
|
if err == nil {
|
|
t.Fatal("Seek on pipe should fail")
|
|
}
|
|
if perr, ok := err.(*PathError); !ok || perr.Err != syscall.ESPIPE {
|
|
t.Errorf("Seek returned error %v, want &PathError{Err: syscall.ESPIPE}", err)
|
|
}
|
|
}
|
|
|
|
type openErrorTest struct {
|
|
path string
|
|
mode int
|
|
error error
|
|
}
|
|
|
|
var openErrorTests = []openErrorTest{
|
|
{
|
|
sfdir + "/no-such-file",
|
|
O_RDONLY,
|
|
syscall.ENOENT,
|
|
},
|
|
{
|
|
sfdir,
|
|
O_WRONLY,
|
|
syscall.EISDIR,
|
|
},
|
|
{
|
|
sfdir + "/" + sfname + "/no-such-file",
|
|
O_WRONLY,
|
|
syscall.ENOTDIR,
|
|
},
|
|
}
|
|
|
|
func TestOpenError(t *testing.T) {
|
|
for _, tt := range openErrorTests {
|
|
f, err := OpenFile(tt.path, tt.mode, 0)
|
|
if err == nil {
|
|
t.Errorf("Open(%q, %d) succeeded", tt.path, tt.mode)
|
|
f.Close()
|
|
continue
|
|
}
|
|
perr, ok := err.(*PathError)
|
|
if !ok {
|
|
t.Errorf("Open(%q, %d) returns error of %T type; want *PathError", tt.path, tt.mode, err)
|
|
}
|
|
if perr.Err != tt.error {
|
|
if runtime.GOOS == "plan9" {
|
|
syscallErrStr := perr.Err.Error()
|
|
expectedErrStr := strings.Replace(tt.error.Error(), "file ", "", 1)
|
|
if !strings.HasSuffix(syscallErrStr, expectedErrStr) {
|
|
// Some Plan 9 file servers incorrectly return
|
|
// EACCES rather than EISDIR when a directory is
|
|
// opened for write.
|
|
if tt.error == syscall.EISDIR && strings.HasSuffix(syscallErrStr, syscall.EACCES.Error()) {
|
|
continue
|
|
}
|
|
t.Errorf("Open(%q, %d) = _, %q; want suffix %q", tt.path, tt.mode, syscallErrStr, expectedErrStr)
|
|
}
|
|
continue
|
|
}
|
|
if runtime.GOOS == "dragonfly" {
|
|
// DragonFly incorrectly returns EACCES rather
|
|
// EISDIR when a directory is opened for write.
|
|
if tt.error == syscall.EISDIR && perr.Err == syscall.EACCES {
|
|
continue
|
|
}
|
|
}
|
|
t.Errorf("Open(%q, %d) = _, %q; want %q", tt.path, tt.mode, perr.Err.Error(), tt.error.Error())
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestOpenNoName(t *testing.T) {
|
|
f, err := Open("")
|
|
if err == nil {
|
|
f.Close()
|
|
t.Fatal(`Open("") succeeded`)
|
|
}
|
|
}
|
|
|
|
func runBinHostname(t *testing.T) string {
|
|
// Run /bin/hostname and collect output.
|
|
r, w, err := Pipe()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer r.Close()
|
|
const path = "/bin/hostname"
|
|
argv := []string{"hostname"}
|
|
if runtime.GOOS == "aix" {
|
|
argv = []string{"hostname", "-s"}
|
|
}
|
|
p, err := StartProcess(path, argv, &ProcAttr{Files: []*File{nil, w, Stderr}})
|
|
if err != nil {
|
|
if _, err := Stat(path); IsNotExist(err) {
|
|
t.Skipf("skipping test; test requires %s but it does not exist", path)
|
|
}
|
|
t.Fatal(err)
|
|
}
|
|
w.Close()
|
|
|
|
var b bytes.Buffer
|
|
io.Copy(&b, r)
|
|
_, err = p.Wait()
|
|
if err != nil {
|
|
t.Fatalf("run hostname Wait: %v", err)
|
|
}
|
|
err = p.Kill()
|
|
if err == nil {
|
|
t.Errorf("expected an error from Kill running 'hostname'")
|
|
}
|
|
output := b.String()
|
|
if n := len(output); n > 0 && output[n-1] == '\n' {
|
|
output = output[0 : n-1]
|
|
}
|
|
if output == "" {
|
|
t.Fatalf("/bin/hostname produced no output")
|
|
}
|
|
|
|
return output
|
|
}
|
|
|
|
func testWindowsHostname(t *testing.T, hostname string) {
|
|
cmd := osexec.Command("hostname")
|
|
out, err := cmd.CombinedOutput()
|
|
if err != nil {
|
|
t.Fatalf("Failed to execute hostname command: %v %s", err, out)
|
|
}
|
|
want := strings.Trim(string(out), "\r\n")
|
|
if hostname != want {
|
|
t.Fatalf("Hostname() = %q != system hostname of %q", hostname, want)
|
|
}
|
|
}
|
|
|
|
func TestHostname(t *testing.T) {
|
|
hostname, err := Hostname()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if hostname == "" {
|
|
t.Fatal("Hostname returned empty string and no error")
|
|
}
|
|
if strings.Contains(hostname, "\x00") {
|
|
t.Fatalf("unexpected zero byte in hostname: %q", hostname)
|
|
}
|
|
|
|
// There is no other way to fetch hostname on windows, but via winapi.
|
|
// On Plan 9 it can be taken from #c/sysname as Hostname() does.
|
|
switch runtime.GOOS {
|
|
case "android", "plan9":
|
|
// No /bin/hostname to verify against.
|
|
return
|
|
case "windows":
|
|
testWindowsHostname(t, hostname)
|
|
return
|
|
}
|
|
|
|
testenv.MustHaveExec(t)
|
|
|
|
// Check internal Hostname() against the output of /bin/hostname.
|
|
// Allow that the internal Hostname returns a Fully Qualified Domain Name
|
|
// and the /bin/hostname only returns the first component
|
|
want := runBinHostname(t)
|
|
if hostname != want {
|
|
host, _, ok := strings.Cut(hostname, ".")
|
|
if !ok || host != want {
|
|
t.Errorf("Hostname() = %q, want %q", hostname, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReadAt(t *testing.T) {
|
|
f := newFile("TestReadAt", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
const data = "hello, world\n"
|
|
io.WriteString(f, data)
|
|
|
|
b := make([]byte, 5)
|
|
n, err := f.ReadAt(b, 7)
|
|
if err != nil || n != len(b) {
|
|
t.Fatalf("ReadAt 7: %d, %v", n, err)
|
|
}
|
|
if string(b) != "world" {
|
|
t.Fatalf("ReadAt 7: have %q want %q", string(b), "world")
|
|
}
|
|
}
|
|
|
|
// Verify that ReadAt doesn't affect seek offset.
|
|
// In the Plan 9 kernel, there used to be a bug in the implementation of
|
|
// the pread syscall, where the channel offset was erroneously updated after
|
|
// calling pread on a file.
|
|
func TestReadAtOffset(t *testing.T) {
|
|
f := newFile("TestReadAtOffset", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
const data = "hello, world\n"
|
|
io.WriteString(f, data)
|
|
|
|
f.Seek(0, 0)
|
|
b := make([]byte, 5)
|
|
|
|
n, err := f.ReadAt(b, 7)
|
|
if err != nil || n != len(b) {
|
|
t.Fatalf("ReadAt 7: %d, %v", n, err)
|
|
}
|
|
if string(b) != "world" {
|
|
t.Fatalf("ReadAt 7: have %q want %q", string(b), "world")
|
|
}
|
|
|
|
n, err = f.Read(b)
|
|
if err != nil || n != len(b) {
|
|
t.Fatalf("Read: %d, %v", n, err)
|
|
}
|
|
if string(b) != "hello" {
|
|
t.Fatalf("Read: have %q want %q", string(b), "hello")
|
|
}
|
|
}
|
|
|
|
// Verify that ReadAt doesn't allow negative offset.
|
|
func TestReadAtNegativeOffset(t *testing.T) {
|
|
f := newFile("TestReadAtNegativeOffset", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
const data = "hello, world\n"
|
|
io.WriteString(f, data)
|
|
|
|
f.Seek(0, 0)
|
|
b := make([]byte, 5)
|
|
|
|
n, err := f.ReadAt(b, -10)
|
|
|
|
const wantsub = "negative offset"
|
|
if !strings.Contains(fmt.Sprint(err), wantsub) || n != 0 {
|
|
t.Errorf("ReadAt(-10) = %v, %v; want 0, ...%q...", n, err, wantsub)
|
|
}
|
|
}
|
|
|
|
func TestWriteAt(t *testing.T) {
|
|
f := newFile("TestWriteAt", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
const data = "hello, world\n"
|
|
io.WriteString(f, data)
|
|
|
|
n, err := f.WriteAt([]byte("WORLD"), 7)
|
|
if err != nil || n != 5 {
|
|
t.Fatalf("WriteAt 7: %d, %v", n, err)
|
|
}
|
|
|
|
b, err := os.ReadFile(f.Name())
|
|
if err != nil {
|
|
t.Fatalf("ReadFile %s: %v", f.Name(), err)
|
|
}
|
|
if string(b) != "hello, WORLD\n" {
|
|
t.Fatalf("after write: have %q want %q", string(b), "hello, WORLD\n")
|
|
}
|
|
}
|
|
|
|
// Verify that WriteAt doesn't allow negative offset.
|
|
func TestWriteAtNegativeOffset(t *testing.T) {
|
|
f := newFile("TestWriteAtNegativeOffset", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
n, err := f.WriteAt([]byte("WORLD"), -10)
|
|
|
|
const wantsub = "negative offset"
|
|
if !strings.Contains(fmt.Sprint(err), wantsub) || n != 0 {
|
|
t.Errorf("WriteAt(-10) = %v, %v; want 0, ...%q...", n, err, wantsub)
|
|
}
|
|
}
|
|
|
|
// Verify that WriteAt doesn't work in append mode.
|
|
func TestWriteAtInAppendMode(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
f, err := OpenFile("write_at_in_append_mode.txt", O_APPEND|O_CREATE, 0666)
|
|
if err != nil {
|
|
t.Fatalf("OpenFile: %v", err)
|
|
}
|
|
defer f.Close()
|
|
|
|
_, err = f.WriteAt([]byte(""), 1)
|
|
if err != ErrWriteAtInAppendMode {
|
|
t.Fatalf("f.WriteAt returned %v, expected %v", err, ErrWriteAtInAppendMode)
|
|
}
|
|
}
|
|
|
|
func writeFile(t *testing.T, fname string, flag int, text string) string {
|
|
f, err := OpenFile(fname, flag, 0666)
|
|
if err != nil {
|
|
t.Fatalf("Open: %v", err)
|
|
}
|
|
n, err := io.WriteString(f, text)
|
|
if err != nil {
|
|
t.Fatalf("WriteString: %d, %v", n, err)
|
|
}
|
|
f.Close()
|
|
data, err := os.ReadFile(fname)
|
|
if err != nil {
|
|
t.Fatalf("ReadFile: %v", err)
|
|
}
|
|
return string(data)
|
|
}
|
|
|
|
func TestAppend(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
const f = "append.txt"
|
|
s := writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")
|
|
if s != "new" {
|
|
t.Fatalf("writeFile: have %q want %q", s, "new")
|
|
}
|
|
s = writeFile(t, f, O_APPEND|O_RDWR, "|append")
|
|
if s != "new|append" {
|
|
t.Fatalf("writeFile: have %q want %q", s, "new|append")
|
|
}
|
|
s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "|append")
|
|
if s != "new|append|append" {
|
|
t.Fatalf("writeFile: have %q want %q", s, "new|append|append")
|
|
}
|
|
err := Remove(f)
|
|
if err != nil {
|
|
t.Fatalf("Remove: %v", err)
|
|
}
|
|
s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "new&append")
|
|
if s != "new&append" {
|
|
t.Fatalf("writeFile: after append have %q want %q", s, "new&append")
|
|
}
|
|
s = writeFile(t, f, O_CREATE|O_RDWR, "old")
|
|
if s != "old&append" {
|
|
t.Fatalf("writeFile: after create have %q want %q", s, "old&append")
|
|
}
|
|
s = writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")
|
|
if s != "new" {
|
|
t.Fatalf("writeFile: after truncate have %q want %q", s, "new")
|
|
}
|
|
}
|
|
|
|
func TestStatDirWithTrailingSlash(t *testing.T) {
|
|
// Create new temporary directory and arrange to clean it up.
|
|
path := t.TempDir()
|
|
|
|
// Stat of path should succeed.
|
|
if _, err := Stat(path); err != nil {
|
|
t.Fatalf("stat %s failed: %s", path, err)
|
|
}
|
|
|
|
// Stat of path+"/" should succeed too.
|
|
path += "/"
|
|
if _, err := Stat(path); err != nil {
|
|
t.Fatalf("stat %s failed: %s", path, err)
|
|
}
|
|
}
|
|
|
|
func TestNilProcessStateString(t *testing.T) {
|
|
var ps *ProcessState
|
|
s := ps.String()
|
|
if s != "<nil>" {
|
|
t.Errorf("(*ProcessState)(nil).String() = %q, want %q", s, "<nil>")
|
|
}
|
|
}
|
|
|
|
func TestSameFile(t *testing.T) {
|
|
defer chtmpdir(t)()
|
|
fa, err := Create("a")
|
|
if err != nil {
|
|
t.Fatalf("Create(a): %v", err)
|
|
}
|
|
fa.Close()
|
|
fb, err := Create("b")
|
|
if err != nil {
|
|
t.Fatalf("Create(b): %v", err)
|
|
}
|
|
fb.Close()
|
|
|
|
ia1, err := Stat("a")
|
|
if err != nil {
|
|
t.Fatalf("Stat(a): %v", err)
|
|
}
|
|
ia2, err := Stat("a")
|
|
if err != nil {
|
|
t.Fatalf("Stat(a): %v", err)
|
|
}
|
|
if !SameFile(ia1, ia2) {
|
|
t.Errorf("files should be same")
|
|
}
|
|
|
|
ib, err := Stat("b")
|
|
if err != nil {
|
|
t.Fatalf("Stat(b): %v", err)
|
|
}
|
|
if SameFile(ia1, ib) {
|
|
t.Errorf("files should be different")
|
|
}
|
|
}
|
|
|
|
func testDevNullFileInfo(t *testing.T, statname, devNullName string, fi FileInfo, ignoreCase bool) {
|
|
pre := fmt.Sprintf("%s(%q): ", statname, devNullName)
|
|
name := filepath.Base(devNullName)
|
|
if ignoreCase {
|
|
if strings.ToUpper(fi.Name()) != strings.ToUpper(name) {
|
|
t.Errorf(pre+"wrong file name have %v want %v", fi.Name(), name)
|
|
}
|
|
} else {
|
|
if fi.Name() != name {
|
|
t.Errorf(pre+"wrong file name have %v want %v", fi.Name(), name)
|
|
}
|
|
}
|
|
if fi.Size() != 0 {
|
|
t.Errorf(pre+"wrong file size have %d want 0", fi.Size())
|
|
}
|
|
if fi.Mode()&ModeDevice == 0 {
|
|
t.Errorf(pre+"wrong file mode %q: ModeDevice is not set", fi.Mode())
|
|
}
|
|
if fi.Mode()&ModeCharDevice == 0 {
|
|
t.Errorf(pre+"wrong file mode %q: ModeCharDevice is not set", fi.Mode())
|
|
}
|
|
if fi.Mode().IsRegular() {
|
|
t.Errorf(pre+"wrong file mode %q: IsRegular returns true", fi.Mode())
|
|
}
|
|
}
|
|
|
|
func testDevNullFile(t *testing.T, devNullName string, ignoreCase bool) {
|
|
f, err := Open(devNullName)
|
|
if err != nil {
|
|
t.Fatalf("Open(%s): %v", devNullName, err)
|
|
}
|
|
defer f.Close()
|
|
|
|
fi, err := f.Stat()
|
|
if err != nil {
|
|
t.Fatalf("Stat(%s): %v", devNullName, err)
|
|
}
|
|
testDevNullFileInfo(t, "f.Stat", devNullName, fi, ignoreCase)
|
|
|
|
fi, err = Stat(devNullName)
|
|
if err != nil {
|
|
t.Fatalf("Stat(%s): %v", devNullName, err)
|
|
}
|
|
testDevNullFileInfo(t, "Stat", devNullName, fi, ignoreCase)
|
|
}
|
|
|
|
func TestDevNullFile(t *testing.T) {
|
|
testDevNullFile(t, DevNull, false)
|
|
}
|
|
|
|
var testLargeWrite = flag.Bool("large_write", false, "run TestLargeWriteToConsole test that floods console with output")
|
|
|
|
func TestLargeWriteToConsole(t *testing.T) {
|
|
if !*testLargeWrite {
|
|
t.Skip("skipping console-flooding test; enable with -large_write")
|
|
}
|
|
b := make([]byte, 32000)
|
|
for i := range b {
|
|
b[i] = '.'
|
|
}
|
|
b[len(b)-1] = '\n'
|
|
n, err := Stdout.Write(b)
|
|
if err != nil {
|
|
t.Fatalf("Write to os.Stdout failed: %v", err)
|
|
}
|
|
if n != len(b) {
|
|
t.Errorf("Write to os.Stdout should return %d; got %d", len(b), n)
|
|
}
|
|
n, err = Stderr.Write(b)
|
|
if err != nil {
|
|
t.Fatalf("Write to os.Stderr failed: %v", err)
|
|
}
|
|
if n != len(b) {
|
|
t.Errorf("Write to os.Stderr should return %d; got %d", len(b), n)
|
|
}
|
|
}
|
|
|
|
func TestStatDirModeExec(t *testing.T) {
|
|
const mode = 0111
|
|
|
|
path := t.TempDir()
|
|
if err := Chmod(path, 0777); err != nil {
|
|
t.Fatalf("Chmod %q 0777: %v", path, err)
|
|
}
|
|
|
|
dir, err := Stat(path)
|
|
if err != nil {
|
|
t.Fatalf("Stat %q (looking for mode %#o): %s", path, mode, err)
|
|
}
|
|
if dir.Mode()&mode != mode {
|
|
t.Errorf("Stat %q: mode %#o want %#o", path, dir.Mode()&mode, mode)
|
|
}
|
|
}
|
|
|
|
func TestStatStdin(t *testing.T) {
|
|
switch runtime.GOOS {
|
|
case "android", "plan9":
|
|
t.Skipf("%s doesn't have /bin/sh", runtime.GOOS)
|
|
}
|
|
|
|
testenv.MustHaveExec(t)
|
|
|
|
if Getenv("GO_WANT_HELPER_PROCESS") == "1" {
|
|
st, err := Stdin.Stat()
|
|
if err != nil {
|
|
t.Fatalf("Stat failed: %v", err)
|
|
}
|
|
fmt.Println(st.Mode() & ModeNamedPipe)
|
|
Exit(0)
|
|
}
|
|
|
|
fi, err := Stdin.Stat()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
switch mode := fi.Mode(); {
|
|
case mode&ModeCharDevice != 0 && mode&ModeDevice != 0:
|
|
case mode&ModeNamedPipe != 0:
|
|
default:
|
|
t.Fatalf("unexpected Stdin mode (%v), want ModeCharDevice or ModeNamedPipe", mode)
|
|
}
|
|
|
|
var cmd *osexec.Cmd
|
|
if runtime.GOOS == "windows" {
|
|
cmd = osexec.Command("cmd", "/c", "echo output | "+Args[0]+" -test.run=TestStatStdin")
|
|
} else {
|
|
cmd = osexec.Command("/bin/sh", "-c", "echo output | "+Args[0]+" -test.run=TestStatStdin")
|
|
}
|
|
cmd.Env = append(Environ(), "GO_WANT_HELPER_PROCESS=1")
|
|
|
|
output, err := cmd.CombinedOutput()
|
|
if err != nil {
|
|
t.Fatalf("Failed to spawn child process: %v %q", err, string(output))
|
|
}
|
|
|
|
// result will be like "prw-rw-rw"
|
|
if len(output) < 1 || output[0] != 'p' {
|
|
t.Fatalf("Child process reports stdin is not pipe '%v'", string(output))
|
|
}
|
|
}
|
|
|
|
func TestStatRelativeSymlink(t *testing.T) {
|
|
testenv.MustHaveSymlink(t)
|
|
|
|
tmpdir := t.TempDir()
|
|
target := filepath.Join(tmpdir, "target")
|
|
f, err := Create(target)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
st, err := f.Stat()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
link := filepath.Join(tmpdir, "link")
|
|
err = Symlink(filepath.Base(target), link)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
st1, err := Stat(link)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if !SameFile(st, st1) {
|
|
t.Error("Stat doesn't follow relative symlink")
|
|
}
|
|
|
|
if runtime.GOOS == "windows" {
|
|
Remove(link)
|
|
err = Symlink(target[len(filepath.VolumeName(target)):], link)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
st1, err := Stat(link)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if !SameFile(st, st1) {
|
|
t.Error("Stat doesn't follow relative symlink")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReadAtEOF(t *testing.T) {
|
|
f := newFile("TestReadAtEOF", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
_, err := f.ReadAt(make([]byte, 10), 0)
|
|
switch err {
|
|
case io.EOF:
|
|
// all good
|
|
case nil:
|
|
t.Fatalf("ReadAt succeeded")
|
|
default:
|
|
t.Fatalf("ReadAt failed: %s", err)
|
|
}
|
|
}
|
|
|
|
func TestLongPath(t *testing.T) {
|
|
tmpdir := newDir("TestLongPath", t)
|
|
defer func(d string) {
|
|
if err := RemoveAll(d); err != nil {
|
|
t.Fatalf("RemoveAll failed: %v", err)
|
|
}
|
|
}(tmpdir)
|
|
|
|
// Test the boundary of 247 and fewer bytes (normal) and 248 and more bytes (adjusted).
|
|
sizes := []int{247, 248, 249, 400}
|
|
for len(tmpdir) < 400 {
|
|
tmpdir += "/dir3456789"
|
|
}
|
|
for _, sz := range sizes {
|
|
t.Run(fmt.Sprintf("length=%d", sz), func(t *testing.T) {
|
|
sizedTempDir := tmpdir[:sz-1] + "x" // Ensure it does not end with a slash.
|
|
|
|
// The various sized runs are for this call to trigger the boundary
|
|
// condition.
|
|
if err := MkdirAll(sizedTempDir, 0755); err != nil {
|
|
t.Fatalf("MkdirAll failed: %v", err)
|
|
}
|
|
data := []byte("hello world\n")
|
|
if err := os.WriteFile(sizedTempDir+"/foo.txt", data, 0644); err != nil {
|
|
t.Fatalf("os.WriteFile() failed: %v", err)
|
|
}
|
|
if err := Rename(sizedTempDir+"/foo.txt", sizedTempDir+"/bar.txt"); err != nil {
|
|
t.Fatalf("Rename failed: %v", err)
|
|
}
|
|
mtime := time.Now().Truncate(time.Minute)
|
|
if err := Chtimes(sizedTempDir+"/bar.txt", mtime, mtime); err != nil {
|
|
t.Fatalf("Chtimes failed: %v", err)
|
|
}
|
|
names := []string{"bar.txt"}
|
|
if testenv.HasSymlink() {
|
|
if err := Symlink(sizedTempDir+"/bar.txt", sizedTempDir+"/symlink.txt"); err != nil {
|
|
t.Fatalf("Symlink failed: %v", err)
|
|
}
|
|
names = append(names, "symlink.txt")
|
|
}
|
|
if testenv.HasLink() {
|
|
if err := Link(sizedTempDir+"/bar.txt", sizedTempDir+"/link.txt"); err != nil {
|
|
t.Fatalf("Link failed: %v", err)
|
|
}
|
|
names = append(names, "link.txt")
|
|
}
|
|
for _, wantSize := range []int64{int64(len(data)), 0} {
|
|
for _, name := range names {
|
|
path := sizedTempDir + "/" + name
|
|
dir, err := Stat(path)
|
|
if err != nil {
|
|
t.Fatalf("Stat(%q) failed: %v", path, err)
|
|
}
|
|
filesize := size(path, t)
|
|
if dir.Size() != filesize || filesize != wantSize {
|
|
t.Errorf("Size(%q) is %d, len(ReadFile()) is %d, want %d", path, dir.Size(), filesize, wantSize)
|
|
}
|
|
err = Chmod(path, dir.Mode())
|
|
if err != nil {
|
|
t.Fatalf("Chmod(%q) failed: %v", path, err)
|
|
}
|
|
}
|
|
if err := Truncate(sizedTempDir+"/bar.txt", 0); err != nil {
|
|
t.Fatalf("Truncate failed: %v", err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func testKillProcess(t *testing.T, processKiller func(p *Process)) {
|
|
testenv.MustHaveExec(t)
|
|
t.Parallel()
|
|
|
|
// Re-exec the test binary to start a process that hangs until stdin is closed.
|
|
cmd := osexec.Command(Args[0])
|
|
cmd.Env = append(os.Environ(), "GO_OS_TEST_DRAIN_STDIN=1")
|
|
stdout, err := cmd.StdoutPipe()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
stdin, err := cmd.StdinPipe()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
err = cmd.Start()
|
|
if err != nil {
|
|
t.Fatalf("Failed to start test process: %v", err)
|
|
}
|
|
|
|
defer func() {
|
|
if err := cmd.Wait(); err == nil {
|
|
t.Errorf("Test process succeeded, but expected to fail")
|
|
}
|
|
stdin.Close() // Keep stdin alive until the process has finished dying.
|
|
}()
|
|
|
|
// Wait for the process to be started.
|
|
// (It will close its stdout when it reaches TestMain.)
|
|
io.Copy(io.Discard, stdout)
|
|
|
|
processKiller(cmd.Process)
|
|
}
|
|
|
|
func TestKillStartProcess(t *testing.T) {
|
|
testKillProcess(t, func(p *Process) {
|
|
err := p.Kill()
|
|
if err != nil {
|
|
t.Fatalf("Failed to kill test process: %v", err)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestGetppid(t *testing.T) {
|
|
if runtime.GOOS == "plan9" {
|
|
// TODO: golang.org/issue/8206
|
|
t.Skipf("skipping test on plan9; see issue 8206")
|
|
}
|
|
|
|
testenv.MustHaveExec(t)
|
|
|
|
if Getenv("GO_WANT_HELPER_PROCESS") == "1" {
|
|
fmt.Print(Getppid())
|
|
Exit(0)
|
|
}
|
|
|
|
cmd := osexec.Command(Args[0], "-test.run=TestGetppid")
|
|
cmd.Env = append(Environ(), "GO_WANT_HELPER_PROCESS=1")
|
|
|
|
// verify that Getppid() from the forked process reports our process id
|
|
output, err := cmd.CombinedOutput()
|
|
if err != nil {
|
|
t.Fatalf("Failed to spawn child process: %v %q", err, string(output))
|
|
}
|
|
|
|
childPpid := string(output)
|
|
ourPid := fmt.Sprintf("%d", Getpid())
|
|
if childPpid != ourPid {
|
|
t.Fatalf("Child process reports parent process id '%v', expected '%v'", childPpid, ourPid)
|
|
}
|
|
}
|
|
|
|
func TestKillFindProcess(t *testing.T) {
|
|
testKillProcess(t, func(p *Process) {
|
|
p2, err := FindProcess(p.Pid)
|
|
if err != nil {
|
|
t.Fatalf("Failed to find test process: %v", err)
|
|
}
|
|
err = p2.Kill()
|
|
if err != nil {
|
|
t.Fatalf("Failed to kill test process: %v", err)
|
|
}
|
|
})
|
|
}
|
|
|
|
var nilFileMethodTests = []struct {
|
|
name string
|
|
f func(*File) error
|
|
}{
|
|
{"Chdir", func(f *File) error { return f.Chdir() }},
|
|
{"Close", func(f *File) error { return f.Close() }},
|
|
{"Chmod", func(f *File) error { return f.Chmod(0) }},
|
|
{"Chown", func(f *File) error { return f.Chown(0, 0) }},
|
|
{"Read", func(f *File) error { _, err := f.Read(make([]byte, 0)); return err }},
|
|
{"ReadAt", func(f *File) error { _, err := f.ReadAt(make([]byte, 0), 0); return err }},
|
|
{"Readdir", func(f *File) error { _, err := f.Readdir(1); return err }},
|
|
{"Readdirnames", func(f *File) error { _, err := f.Readdirnames(1); return err }},
|
|
{"Seek", func(f *File) error { _, err := f.Seek(0, io.SeekStart); return err }},
|
|
{"Stat", func(f *File) error { _, err := f.Stat(); return err }},
|
|
{"Sync", func(f *File) error { return f.Sync() }},
|
|
{"Truncate", func(f *File) error { return f.Truncate(0) }},
|
|
{"Write", func(f *File) error { _, err := f.Write(make([]byte, 0)); return err }},
|
|
{"WriteAt", func(f *File) error { _, err := f.WriteAt(make([]byte, 0), 0); return err }},
|
|
{"WriteString", func(f *File) error { _, err := f.WriteString(""); return err }},
|
|
}
|
|
|
|
// Test that all File methods give ErrInvalid if the receiver is nil.
|
|
func TestNilFileMethods(t *testing.T) {
|
|
for _, tt := range nilFileMethodTests {
|
|
var file *File
|
|
got := tt.f(file)
|
|
if got != ErrInvalid {
|
|
t.Errorf("%v should fail when f is nil; got %v", tt.name, got)
|
|
}
|
|
}
|
|
}
|
|
|
|
func mkdirTree(t *testing.T, root string, level, max int) {
|
|
if level >= max {
|
|
return
|
|
}
|
|
level++
|
|
for i := 'a'; i < 'c'; i++ {
|
|
dir := filepath.Join(root, string(i))
|
|
if err := Mkdir(dir, 0700); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
mkdirTree(t, dir, level, max)
|
|
}
|
|
}
|
|
|
|
// Test that simultaneous RemoveAll do not report an error.
|
|
// As long as it gets removed, we should be happy.
|
|
func TestRemoveAllRace(t *testing.T) {
|
|
if runtime.GOOS == "windows" {
|
|
// Windows has very strict rules about things like
|
|
// removing directories while someone else has
|
|
// them open. The racing doesn't work out nicely
|
|
// like it does on Unix.
|
|
t.Skip("skipping on windows")
|
|
}
|
|
|
|
n := runtime.GOMAXPROCS(16)
|
|
defer runtime.GOMAXPROCS(n)
|
|
root, err := os.MkdirTemp("", "issue")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
mkdirTree(t, root, 1, 6)
|
|
hold := make(chan struct{})
|
|
var wg sync.WaitGroup
|
|
for i := 0; i < 4; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
<-hold
|
|
err := RemoveAll(root)
|
|
if err != nil {
|
|
t.Errorf("unexpected error: %T, %q", err, err)
|
|
}
|
|
}()
|
|
}
|
|
close(hold) // let workers race to remove root
|
|
wg.Wait()
|
|
}
|
|
|
|
// Test that reading from a pipe doesn't use up a thread.
|
|
func TestPipeThreads(t *testing.T) {
|
|
switch runtime.GOOS {
|
|
case "illumos", "solaris":
|
|
t.Skip("skipping on Solaris and illumos; issue 19111")
|
|
case "windows":
|
|
t.Skip("skipping on Windows; issue 19098")
|
|
case "plan9":
|
|
t.Skip("skipping on Plan 9; does not support runtime poller")
|
|
case "js":
|
|
t.Skip("skipping on js; no support for os.Pipe")
|
|
}
|
|
|
|
threads := 100
|
|
|
|
// OpenBSD has a low default for max number of files.
|
|
if runtime.GOOS == "openbsd" {
|
|
threads = 50
|
|
}
|
|
|
|
r := make([]*File, threads)
|
|
w := make([]*File, threads)
|
|
for i := 0; i < threads; i++ {
|
|
rp, wp, err := Pipe()
|
|
if err != nil {
|
|
for j := 0; j < i; j++ {
|
|
r[j].Close()
|
|
w[j].Close()
|
|
}
|
|
t.Fatal(err)
|
|
}
|
|
r[i] = rp
|
|
w[i] = wp
|
|
}
|
|
|
|
defer debug.SetMaxThreads(debug.SetMaxThreads(threads / 2))
|
|
|
|
creading := make(chan bool, threads)
|
|
cdone := make(chan bool, threads)
|
|
for i := 0; i < threads; i++ {
|
|
go func(i int) {
|
|
var b [1]byte
|
|
creading <- true
|
|
if _, err := r[i].Read(b[:]); err != nil {
|
|
t.Error(err)
|
|
}
|
|
if err := r[i].Close(); err != nil {
|
|
t.Error(err)
|
|
}
|
|
cdone <- true
|
|
}(i)
|
|
}
|
|
|
|
for i := 0; i < threads; i++ {
|
|
<-creading
|
|
}
|
|
|
|
// If we are still alive, it means that the 100 goroutines did
|
|
// not require 100 threads.
|
|
|
|
for i := 0; i < threads; i++ {
|
|
if _, err := w[i].Write([]byte{0}); err != nil {
|
|
t.Error(err)
|
|
}
|
|
if err := w[i].Close(); err != nil {
|
|
t.Error(err)
|
|
}
|
|
<-cdone
|
|
}
|
|
}
|
|
|
|
func testDoubleCloseError(t *testing.T, path string) {
|
|
file, err := Open(path)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := file.Close(); err != nil {
|
|
t.Fatalf("unexpected error from Close: %v", err)
|
|
}
|
|
if err := file.Close(); err == nil {
|
|
t.Error("second Close did not fail")
|
|
} else if pe, ok := err.(*PathError); !ok {
|
|
t.Errorf("second Close returned unexpected error type %T; expected fs.PathError", pe)
|
|
} else if pe.Err != ErrClosed {
|
|
t.Errorf("second Close returned %q, wanted %q", err, ErrClosed)
|
|
} else {
|
|
t.Logf("second close returned expected error %q", err)
|
|
}
|
|
}
|
|
|
|
func TestDoubleCloseError(t *testing.T) {
|
|
testDoubleCloseError(t, filepath.Join(sfdir, sfname))
|
|
testDoubleCloseError(t, sfdir)
|
|
}
|
|
|
|
func TestUserHomeDir(t *testing.T) {
|
|
dir, err := UserHomeDir()
|
|
if dir == "" && err == nil {
|
|
t.Fatal("UserHomeDir returned an empty string but no error")
|
|
}
|
|
if err != nil {
|
|
t.Skipf("UserHomeDir failed: %v", err)
|
|
}
|
|
fi, err := Stat(dir)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !fi.IsDir() {
|
|
t.Fatalf("dir %s is not directory; type = %v", dir, fi.Mode())
|
|
}
|
|
}
|
|
|
|
func TestDirSeek(t *testing.T) {
|
|
if runtime.GOOS == "windows" {
|
|
testenv.SkipFlaky(t, 36019)
|
|
}
|
|
wd, err := Getwd()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
f, err := Open(wd)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
dirnames1, err := f.Readdirnames(0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
ret, err := f.Seek(0, 0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if ret != 0 {
|
|
t.Fatalf("seek result not zero: %d", ret)
|
|
}
|
|
|
|
dirnames2, err := f.Readdirnames(0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
return
|
|
}
|
|
|
|
if len(dirnames1) != len(dirnames2) {
|
|
t.Fatalf("listings have different lengths: %d and %d\n", len(dirnames1), len(dirnames2))
|
|
}
|
|
for i, n1 := range dirnames1 {
|
|
n2 := dirnames2[i]
|
|
if n1 != n2 {
|
|
t.Fatalf("different name i=%d n1=%s n2=%s\n", i, n1, n2)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReaddirSmallSeek(t *testing.T) {
|
|
// See issue 37161. Read only one entry from a directory,
|
|
// seek to the beginning, and read again. We should not see
|
|
// duplicate entries.
|
|
if runtime.GOOS == "windows" {
|
|
testenv.SkipFlaky(t, 36019)
|
|
}
|
|
wd, err := Getwd()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
df, err := Open(filepath.Join(wd, "testdata", "issue37161"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
names1, err := df.Readdirnames(1)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err = df.Seek(0, 0); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
names2, err := df.Readdirnames(0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if len(names2) != 3 {
|
|
t.Fatalf("first names: %v, second names: %v", names1, names2)
|
|
}
|
|
}
|
|
|
|
// isDeadlineExceeded reports whether err is or wraps os.ErrDeadlineExceeded.
|
|
// We also check that the error has a Timeout method that returns true.
|
|
func isDeadlineExceeded(err error) bool {
|
|
if !IsTimeout(err) {
|
|
return false
|
|
}
|
|
if !errors.Is(err, ErrDeadlineExceeded) {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Test that opening a file does not change its permissions. Issue 38225.
|
|
func TestOpenFileKeepsPermissions(t *testing.T) {
|
|
t.Parallel()
|
|
dir := t.TempDir()
|
|
name := filepath.Join(dir, "x")
|
|
f, err := Create(name)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := f.Close(); err != nil {
|
|
t.Error(err)
|
|
}
|
|
f, err = OpenFile(name, O_WRONLY|O_CREATE|O_TRUNC, 0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if fi, err := f.Stat(); err != nil {
|
|
t.Error(err)
|
|
} else if fi.Mode()&0222 == 0 {
|
|
t.Errorf("f.Stat.Mode after OpenFile is %v, should be writable", fi.Mode())
|
|
}
|
|
if err := f.Close(); err != nil {
|
|
t.Error(err)
|
|
}
|
|
if fi, err := Stat(name); err != nil {
|
|
t.Error(err)
|
|
} else if fi.Mode()&0222 == 0 {
|
|
t.Errorf("Stat after OpenFile is %v, should be writable", fi.Mode())
|
|
}
|
|
}
|
|
|
|
func TestDirFS(t *testing.T) {
|
|
// On Windows, we force the MFT to update by reading the actual metadata from GetFileInformationByHandle and then
|
|
// explicitly setting that. Otherwise it might get out of sync with FindFirstFile. See golang.org/issues/42637.
|
|
if runtime.GOOS == "windows" {
|
|
if err := filepath.WalkDir("./testdata/dirfs", func(path string, d fs.DirEntry, err error) error {
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
info, err := d.Info()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
stat, err := Stat(path) // This uses GetFileInformationByHandle internally.
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if stat.ModTime() == info.ModTime() {
|
|
return nil
|
|
}
|
|
if err := Chtimes(path, stat.ModTime(), stat.ModTime()); err != nil {
|
|
t.Log(err) // We only log, not die, in case the test directory is not writable.
|
|
}
|
|
return nil
|
|
}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
if err := fstest.TestFS(DirFS("./testdata/dirfs"), "a", "b", "dir/x"); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Test that Open does not accept backslash as separator.
|
|
d := DirFS(".")
|
|
_, err := d.Open(`testdata\dirfs`)
|
|
if err == nil {
|
|
t.Fatalf(`Open testdata\dirfs succeeded`)
|
|
}
|
|
}
|
|
|
|
func TestDirFSPathsValid(t *testing.T) {
|
|
if runtime.GOOS == "windows" {
|
|
t.Skipf("skipping on Windows")
|
|
}
|
|
|
|
d := t.TempDir()
|
|
if err := os.WriteFile(filepath.Join(d, "control.txt"), []byte(string("Hello, world!")), 0644); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := os.WriteFile(filepath.Join(d, `e:xperi\ment.txt`), []byte(string("Hello, colon and backslash!")), 0644); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
fsys := os.DirFS(d)
|
|
err := fs.WalkDir(fsys, ".", func(path string, e fs.DirEntry, err error) error {
|
|
if fs.ValidPath(e.Name()) {
|
|
t.Logf("%q ok", e.Name())
|
|
} else {
|
|
t.Errorf("%q INVALID", e.Name())
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestReadFileProc(t *testing.T) {
|
|
// Linux files in /proc report 0 size,
|
|
// but then if ReadFile reads just a single byte at offset 0,
|
|
// the read at offset 1 returns EOF instead of more data.
|
|
// ReadFile has a minimum read size of 512 to work around this,
|
|
// but test explicitly that it's working.
|
|
name := "/proc/sys/fs/pipe-max-size"
|
|
if _, err := Stat(name); err != nil {
|
|
t.Skip(err)
|
|
}
|
|
data, err := ReadFile(name)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if len(data) == 0 || data[len(data)-1] != '\n' {
|
|
t.Fatalf("read %s: not newline-terminated: %q", name, data)
|
|
}
|
|
}
|
|
|
|
func TestWriteStringAlloc(t *testing.T) {
|
|
if runtime.GOOS == "js" {
|
|
t.Skip("js allocates a lot during File.WriteString")
|
|
}
|
|
d := t.TempDir()
|
|
f, err := Create(filepath.Join(d, "whiteboard.txt"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
allocs := testing.AllocsPerRun(100, func() {
|
|
f.WriteString("I will not allocate when passed a string longer than 32 bytes.\n")
|
|
})
|
|
if allocs != 0 {
|
|
t.Errorf("expected 0 allocs for File.WriteString, got %v", allocs)
|
|
}
|
|
}
|