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747 |
jeremybenn |
// 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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"fmt"
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"io"
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"io/ioutil"
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. "os"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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"time"
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)
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var dot = []string{
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"dir_unix.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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"time.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() (sd *sysDir) {
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switch runtime.GOOS {
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case "windows":
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sd = &sysDir{
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Getenv("SystemRoot") + "\\system32\\drivers\\etc",
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[]string{
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"hosts",
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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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sd = &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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default:
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sd = &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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return
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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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defer file.Close()
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if err != nil {
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t.Fatal("open failed:", err)
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}
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var buf [100]byte
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len := 0
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for {
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n, e := file.Read(buf[0:])
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len += n
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if e == io.EOF {
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break
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}
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if e != nil {
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t.Fatal("read failed:", err)
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}
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}
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return int64(len)
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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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func newFile(testName string, t *testing.T) (f *File) {
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// Use a local file system, not NFS.
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// On Unix, override $TMPDIR in case the user
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// has it set to an NFS-mounted directory.
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dir := ""
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if runtime.GOOS != "windows" {
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dir = "/tmp"
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}
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f, err := ioutil.TempFile(dir, "_Go_"+testName)
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if err != nil {
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t.Fatalf("open %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 TestFstat(t *testing.T) {
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path := sfdir + "/" + sfname
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file, err1 := Open(path)
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defer file.Close()
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if err1 != nil {
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t.Fatal("open failed:", err1)
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}
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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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func testReaddirnames(dir string, contents []string, t *testing.T) {
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file, err := Open(dir)
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defer file.Close()
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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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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 %s in directory", n)
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}
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if equal(m, n) {
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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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}
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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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}
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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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defer file.Close()
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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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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 equal(m, n.Name()) {
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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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}
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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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}
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func TestReaddirnames(t *testing.T) {
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testReaddirnames(".", dot, t)
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testReaddirnames(sysdir.name, sysdir.files, t)
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}
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func TestReaddir(t *testing.T) {
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testReaddir(".", dot, t)
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testReaddir(sysdir.name, sysdir.files, t)
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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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}
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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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}
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// Check that reading a directory one entry at a time gives the same result
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// as reading it all at once.
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func TestReaddirnamesOneAtATime(t *testing.T) {
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// big directory that doesn't change often.
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dir := "/usr/bin"
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switch runtime.GOOS {
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case "windows":
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dir = Getenv("SystemRoot") + "\\system32"
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case "plan9":
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dir = "/bin"
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}
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file, err := Open(dir)
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defer file.Close()
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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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all, err1 := file.Readdirnames(-1)
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if err1 != nil {
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t.Fatalf("readdirnames %q failed: %v", dir, err1)
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}
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| 294 |
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file1, err2 := Open(dir)
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| 295 |
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if err2 != nil {
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t.Fatalf("open %q failed: %v", dir, err2)
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}
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small := smallReaddirnames(file1, len(all)+100, t) // +100 in case we screw up
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if len(small) < len(all) {
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t.Fatalf("len(small) is %d, less than %d", len(small), len(all))
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| 301 |
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}
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for i, n := range all {
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if small[i] != n {
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t.Errorf("small read %q mismatch: %v", small[i], n)
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}
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| 306 |
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}
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| 307 |
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}
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| 308 |
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| 309 |
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func TestReaddirNValues(t *testing.T) {
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| 310 |
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if testing.Short() {
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t.Logf("test.short; skipping")
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| 312 |
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return
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| 313 |
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}
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| 314 |
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dir, err := ioutil.TempDir("", "")
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| 315 |
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if err != nil {
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| 316 |
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t.Fatalf("TempDir: %v", err)
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| 317 |
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}
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| 318 |
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defer RemoveAll(dir)
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| 319 |
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for i := 1; i <= 105; i++ {
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| 320 |
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f, err := Create(filepath.Join(dir, fmt.Sprintf("%d", i)))
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| 321 |
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if err != nil {
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| 322 |
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t.Fatalf("Create: %v", err)
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| 323 |
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}
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| 324 |
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f.Write([]byte(strings.Repeat("X", i)))
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| 325 |
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f.Close()
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| 326 |
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}
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| 327 |
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| 328 |
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var d *File
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| 329 |
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openDir := func() {
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| 330 |
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var err error
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| 331 |
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d, err = Open(dir)
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| 332 |
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if err != nil {
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| 333 |
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t.Fatalf("Open directory: %v", err)
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| 334 |
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}
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| 335 |
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}
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| 336 |
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| 337 |
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readDirExpect := func(n, want int, wantErr error) {
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| 338 |
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fi, err := d.Readdir(n)
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| 339 |
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if err != wantErr {
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| 340 |
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t.Fatalf("Readdir of %d got error %v, want %v", n, err, wantErr)
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| 341 |
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}
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| 342 |
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if g, e := len(fi), want; g != e {
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| 343 |
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t.Errorf("Readdir of %d got %d files, want %d", n, g, e)
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| 344 |
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}
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| 345 |
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}
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| 346 |
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| 347 |
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readDirNamesExpect := func(n, want int, wantErr error) {
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| 348 |
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fi, err := d.Readdirnames(n)
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| 349 |
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if err != wantErr {
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| 350 |
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t.Fatalf("Readdirnames of %d got error %v, want %v", n, err, wantErr)
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| 351 |
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}
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| 352 |
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if g, e := len(fi), want; g != e {
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| 353 |
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t.Errorf("Readdirnames of %d got %d files, want %d", n, g, e)
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| 354 |
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}
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| 355 |
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}
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| 356 |
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| 357 |
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for _, fn := range []func(int, int, error){readDirExpect, readDirNamesExpect} {
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| 358 |
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// Test the slurp case
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| 359 |
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openDir()
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| 360 |
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fn(0, 105, nil)
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| 361 |
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fn(0, 0, nil)
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| 362 |
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d.Close()
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| 363 |
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| 364 |
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// Slurp with -1 instead
|
| 365 |
|
|
openDir()
|
| 366 |
|
|
fn(-1, 105, nil)
|
| 367 |
|
|
fn(-2, 0, nil)
|
| 368 |
|
|
fn(0, 0, nil)
|
| 369 |
|
|
d.Close()
|
| 370 |
|
|
|
| 371 |
|
|
// Test the bounded case
|
| 372 |
|
|
openDir()
|
| 373 |
|
|
fn(1, 1, nil)
|
| 374 |
|
|
fn(2, 2, nil)
|
| 375 |
|
|
fn(105, 102, nil) // and tests buffer >100 case
|
| 376 |
|
|
fn(3, 0, io.EOF)
|
| 377 |
|
|
d.Close()
|
| 378 |
|
|
}
|
| 379 |
|
|
}
|
| 380 |
|
|
|
| 381 |
|
|
func TestHardLink(t *testing.T) {
|
| 382 |
|
|
// Hardlinks are not supported under windows or Plan 9.
|
| 383 |
|
|
if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
|
| 384 |
|
|
return
|
| 385 |
|
|
}
|
| 386 |
|
|
from, to := "hardlinktestfrom", "hardlinktestto"
|
| 387 |
|
|
Remove(from) // Just in case.
|
| 388 |
|
|
file, err := Create(to)
|
| 389 |
|
|
if err != nil {
|
| 390 |
|
|
t.Fatalf("open %q failed: %v", to, err)
|
| 391 |
|
|
}
|
| 392 |
|
|
defer Remove(to)
|
| 393 |
|
|
if err = file.Close(); err != nil {
|
| 394 |
|
|
t.Errorf("close %q failed: %v", to, err)
|
| 395 |
|
|
}
|
| 396 |
|
|
err = Link(to, from)
|
| 397 |
|
|
if err != nil {
|
| 398 |
|
|
t.Fatalf("link %q, %q failed: %v", to, from, err)
|
| 399 |
|
|
}
|
| 400 |
|
|
defer Remove(from)
|
| 401 |
|
|
tostat, err := Stat(to)
|
| 402 |
|
|
if err != nil {
|
| 403 |
|
|
t.Fatalf("stat %q failed: %v", to, err)
|
| 404 |
|
|
}
|
| 405 |
|
|
fromstat, err := Stat(from)
|
| 406 |
|
|
if err != nil {
|
| 407 |
|
|
t.Fatalf("stat %q failed: %v", from, err)
|
| 408 |
|
|
}
|
| 409 |
|
|
if !SameFile(tostat, fromstat) {
|
| 410 |
|
|
t.Errorf("link %q, %q did not create hard link", to, from)
|
| 411 |
|
|
}
|
| 412 |
|
|
}
|
| 413 |
|
|
|
| 414 |
|
|
func TestSymLink(t *testing.T) {
|
| 415 |
|
|
// Symlinks are not supported under windows or Plan 9.
|
| 416 |
|
|
if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
|
| 417 |
|
|
return
|
| 418 |
|
|
}
|
| 419 |
|
|
from, to := "symlinktestfrom", "symlinktestto"
|
| 420 |
|
|
Remove(from) // Just in case.
|
| 421 |
|
|
file, err := Create(to)
|
| 422 |
|
|
if err != nil {
|
| 423 |
|
|
t.Fatalf("open %q failed: %v", to, err)
|
| 424 |
|
|
}
|
| 425 |
|
|
defer Remove(to)
|
| 426 |
|
|
if err = file.Close(); err != nil {
|
| 427 |
|
|
t.Errorf("close %q failed: %v", to, err)
|
| 428 |
|
|
}
|
| 429 |
|
|
err = Symlink(to, from)
|
| 430 |
|
|
if err != nil {
|
| 431 |
|
|
t.Fatalf("symlink %q, %q failed: %v", to, from, err)
|
| 432 |
|
|
}
|
| 433 |
|
|
defer Remove(from)
|
| 434 |
|
|
tostat, err := Lstat(to)
|
| 435 |
|
|
if err != nil {
|
| 436 |
|
|
t.Fatalf("stat %q failed: %v", to, err)
|
| 437 |
|
|
}
|
| 438 |
|
|
if tostat.Mode()&ModeSymlink != 0 {
|
| 439 |
|
|
t.Fatalf("stat %q claims to have found a symlink", to)
|
| 440 |
|
|
}
|
| 441 |
|
|
fromstat, err := Stat(from)
|
| 442 |
|
|
if err != nil {
|
| 443 |
|
|
t.Fatalf("stat %q failed: %v", from, err)
|
| 444 |
|
|
}
|
| 445 |
|
|
if !SameFile(tostat, fromstat) {
|
| 446 |
|
|
t.Errorf("symlink %q, %q did not create symlink", to, from)
|
| 447 |
|
|
}
|
| 448 |
|
|
fromstat, err = Lstat(from)
|
| 449 |
|
|
if err != nil {
|
| 450 |
|
|
t.Fatalf("lstat %q failed: %v", from, err)
|
| 451 |
|
|
}
|
| 452 |
|
|
if fromstat.Mode()&ModeSymlink == 0 {
|
| 453 |
|
|
t.Fatalf("symlink %q, %q did not create symlink", to, from)
|
| 454 |
|
|
}
|
| 455 |
|
|
fromstat, err = Stat(from)
|
| 456 |
|
|
if err != nil {
|
| 457 |
|
|
t.Fatalf("stat %q failed: %v", from, err)
|
| 458 |
|
|
}
|
| 459 |
|
|
if fromstat.Mode()&ModeSymlink != 0 {
|
| 460 |
|
|
t.Fatalf("stat %q did not follow symlink", from)
|
| 461 |
|
|
}
|
| 462 |
|
|
s, err := Readlink(from)
|
| 463 |
|
|
if err != nil {
|
| 464 |
|
|
t.Fatalf("readlink %q failed: %v", from, err)
|
| 465 |
|
|
}
|
| 466 |
|
|
if s != to {
|
| 467 |
|
|
t.Fatalf("after symlink %q != %q", s, to)
|
| 468 |
|
|
}
|
| 469 |
|
|
file, err = Open(from)
|
| 470 |
|
|
if err != nil {
|
| 471 |
|
|
t.Fatalf("open %q failed: %v", from, err)
|
| 472 |
|
|
}
|
| 473 |
|
|
file.Close()
|
| 474 |
|
|
}
|
| 475 |
|
|
|
| 476 |
|
|
func TestLongSymlink(t *testing.T) {
|
| 477 |
|
|
// Symlinks are not supported under windows or Plan 9.
|
| 478 |
|
|
if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
|
| 479 |
|
|
return
|
| 480 |
|
|
}
|
| 481 |
|
|
s := "0123456789abcdef"
|
| 482 |
|
|
// Long, but not too long: a common limit is 255.
|
| 483 |
|
|
s = s + s + s + s + s + s + s + s + s + s + s + s + s + s + s
|
| 484 |
|
|
from := "longsymlinktestfrom"
|
| 485 |
|
|
Remove(from) // Just in case.
|
| 486 |
|
|
err := Symlink(s, from)
|
| 487 |
|
|
if err != nil {
|
| 488 |
|
|
t.Fatalf("symlink %q, %q failed: %v", s, from, err)
|
| 489 |
|
|
}
|
| 490 |
|
|
defer Remove(from)
|
| 491 |
|
|
r, err := Readlink(from)
|
| 492 |
|
|
if err != nil {
|
| 493 |
|
|
t.Fatalf("readlink %q failed: %v", from, err)
|
| 494 |
|
|
}
|
| 495 |
|
|
if r != s {
|
| 496 |
|
|
t.Fatalf("after symlink %q != %q", r, s)
|
| 497 |
|
|
}
|
| 498 |
|
|
}
|
| 499 |
|
|
|
| 500 |
|
|
func TestRename(t *testing.T) {
|
| 501 |
|
|
from, to := "renamefrom", "renameto"
|
| 502 |
|
|
Remove(to) // Just in case.
|
| 503 |
|
|
file, err := Create(from)
|
| 504 |
|
|
if err != nil {
|
| 505 |
|
|
t.Fatalf("open %q failed: %v", to, err)
|
| 506 |
|
|
}
|
| 507 |
|
|
if err = file.Close(); err != nil {
|
| 508 |
|
|
t.Errorf("close %q failed: %v", to, err)
|
| 509 |
|
|
}
|
| 510 |
|
|
err = Rename(from, to)
|
| 511 |
|
|
if err != nil {
|
| 512 |
|
|
t.Fatalf("rename %q, %q failed: %v", to, from, err)
|
| 513 |
|
|
}
|
| 514 |
|
|
defer Remove(to)
|
| 515 |
|
|
_, err = Stat(to)
|
| 516 |
|
|
if err != nil {
|
| 517 |
|
|
t.Errorf("stat %q failed: %v", to, err)
|
| 518 |
|
|
}
|
| 519 |
|
|
}
|
| 520 |
|
|
|
| 521 |
|
|
func exec(t *testing.T, dir, cmd string, args []string, expect string) {
|
| 522 |
|
|
r, w, err := Pipe()
|
| 523 |
|
|
if err != nil {
|
| 524 |
|
|
t.Fatalf("Pipe: %v", err)
|
| 525 |
|
|
}
|
| 526 |
|
|
attr := &ProcAttr{Dir: dir, Files: []*File{nil, w, Stderr}}
|
| 527 |
|
|
p, err := StartProcess(cmd, args, attr)
|
| 528 |
|
|
if err != nil {
|
| 529 |
|
|
t.Fatalf("StartProcess: %v", err)
|
| 530 |
|
|
}
|
| 531 |
|
|
defer p.Release()
|
| 532 |
|
|
w.Close()
|
| 533 |
|
|
|
| 534 |
|
|
var b bytes.Buffer
|
| 535 |
|
|
io.Copy(&b, r)
|
| 536 |
|
|
output := b.String()
|
| 537 |
|
|
// Accept /usr prefix because Solaris /bin is symlinked to /usr/bin.
|
| 538 |
|
|
if output != expect && output != "/usr"+expect {
|
| 539 |
|
|
t.Errorf("exec %q returned %q wanted %q",
|
| 540 |
|
|
strings.Join(append([]string{cmd}, args...), " "), output, expect)
|
| 541 |
|
|
}
|
| 542 |
|
|
p.Wait(0)
|
| 543 |
|
|
}
|
| 544 |
|
|
|
| 545 |
|
|
func TestStartProcess(t *testing.T) {
|
| 546 |
|
|
var dir, cmd, le string
|
| 547 |
|
|
var args []string
|
| 548 |
|
|
if runtime.GOOS == "windows" {
|
| 549 |
|
|
le = "\r\n"
|
| 550 |
|
|
cmd = Getenv("COMSPEC")
|
| 551 |
|
|
dir = Getenv("SystemRoot")
|
| 552 |
|
|
args = []string{"/c", "cd"}
|
| 553 |
|
|
} else {
|
| 554 |
|
|
le = "\n"
|
| 555 |
|
|
cmd = "/bin/pwd"
|
| 556 |
|
|
dir = "/"
|
| 557 |
|
|
args = []string{}
|
| 558 |
|
|
}
|
| 559 |
|
|
cmddir, cmdbase := filepath.Split(cmd)
|
| 560 |
|
|
args = append([]string{cmdbase}, args...)
|
| 561 |
|
|
// Test absolute executable path.
|
| 562 |
|
|
exec(t, dir, cmd, args, dir+le)
|
| 563 |
|
|
// Test relative executable path.
|
| 564 |
|
|
exec(t, cmddir, cmdbase, args, filepath.Clean(cmddir)+le)
|
| 565 |
|
|
}
|
| 566 |
|
|
|
| 567 |
|
|
func checkMode(t *testing.T, path string, mode FileMode) {
|
| 568 |
|
|
dir, err := Stat(path)
|
| 569 |
|
|
if err != nil {
|
| 570 |
|
|
t.Fatalf("Stat %q (looking for mode %#o): %s", path, mode, err)
|
| 571 |
|
|
}
|
| 572 |
|
|
if dir.Mode()&0777 != mode {
|
| 573 |
|
|
t.Errorf("Stat %q: mode %#o want %#o", path, dir.Mode(), mode)
|
| 574 |
|
|
}
|
| 575 |
|
|
}
|
| 576 |
|
|
|
| 577 |
|
|
func TestChmod(t *testing.T) {
|
| 578 |
|
|
// Chmod is not supported under windows.
|
| 579 |
|
|
if runtime.GOOS == "windows" {
|
| 580 |
|
|
return
|
| 581 |
|
|
}
|
| 582 |
|
|
f := newFile("TestChmod", t)
|
| 583 |
|
|
defer Remove(f.Name())
|
| 584 |
|
|
defer f.Close()
|
| 585 |
|
|
|
| 586 |
|
|
if err := Chmod(f.Name(), 0456); err != nil {
|
| 587 |
|
|
t.Fatalf("chmod %s 0456: %s", f.Name(), err)
|
| 588 |
|
|
}
|
| 589 |
|
|
checkMode(t, f.Name(), 0456)
|
| 590 |
|
|
|
| 591 |
|
|
if err := f.Chmod(0123); err != nil {
|
| 592 |
|
|
t.Fatalf("chmod %s 0123: %s", f.Name(), err)
|
| 593 |
|
|
}
|
| 594 |
|
|
checkMode(t, f.Name(), 0123)
|
| 595 |
|
|
}
|
| 596 |
|
|
|
| 597 |
|
|
func checkSize(t *testing.T, f *File, size int64) {
|
| 598 |
|
|
dir, err := f.Stat()
|
| 599 |
|
|
if err != nil {
|
| 600 |
|
|
t.Fatalf("Stat %q (looking for size %d): %s", f.Name(), size, err)
|
| 601 |
|
|
}
|
| 602 |
|
|
if dir.Size() != size {
|
| 603 |
|
|
t.Errorf("Stat %q: size %d want %d", f.Name(), dir.Size(), size)
|
| 604 |
|
|
}
|
| 605 |
|
|
}
|
| 606 |
|
|
|
| 607 |
|
|
func TestFTruncate(t *testing.T) {
|
| 608 |
|
|
f := newFile("TestFTruncate", t)
|
| 609 |
|
|
defer Remove(f.Name())
|
| 610 |
|
|
defer f.Close()
|
| 611 |
|
|
|
| 612 |
|
|
checkSize(t, f, 0)
|
| 613 |
|
|
f.Write([]byte("hello, world\n"))
|
| 614 |
|
|
checkSize(t, f, 13)
|
| 615 |
|
|
f.Truncate(10)
|
| 616 |
|
|
checkSize(t, f, 10)
|
| 617 |
|
|
f.Truncate(1024)
|
| 618 |
|
|
checkSize(t, f, 1024)
|
| 619 |
|
|
f.Truncate(0)
|
| 620 |
|
|
checkSize(t, f, 0)
|
| 621 |
|
|
f.Write([]byte("surprise!"))
|
| 622 |
|
|
checkSize(t, f, 13+9) // wrote at offset past where hello, world was.
|
| 623 |
|
|
}
|
| 624 |
|
|
|
| 625 |
|
|
func TestTruncate(t *testing.T) {
|
| 626 |
|
|
f := newFile("TestTruncate", t)
|
| 627 |
|
|
defer Remove(f.Name())
|
| 628 |
|
|
defer f.Close()
|
| 629 |
|
|
|
| 630 |
|
|
checkSize(t, f, 0)
|
| 631 |
|
|
f.Write([]byte("hello, world\n"))
|
| 632 |
|
|
checkSize(t, f, 13)
|
| 633 |
|
|
Truncate(f.Name(), 10)
|
| 634 |
|
|
checkSize(t, f, 10)
|
| 635 |
|
|
Truncate(f.Name(), 1024)
|
| 636 |
|
|
checkSize(t, f, 1024)
|
| 637 |
|
|
Truncate(f.Name(), 0)
|
| 638 |
|
|
checkSize(t, f, 0)
|
| 639 |
|
|
f.Write([]byte("surprise!"))
|
| 640 |
|
|
checkSize(t, f, 13+9) // wrote at offset past where hello, world was.
|
| 641 |
|
|
}
|
| 642 |
|
|
|
| 643 |
|
|
// Use TempDir() to make sure we're on a local file system,
|
| 644 |
|
|
// so that timings are not distorted by latency and caching.
|
| 645 |
|
|
// On NFS, timings can be off due to caching of meta-data on
|
| 646 |
|
|
// NFS servers (Issue 848).
|
| 647 |
|
|
func TestChtimes(t *testing.T) {
|
| 648 |
|
|
f := newFile("TestChtimes", t)
|
| 649 |
|
|
defer Remove(f.Name())
|
| 650 |
|
|
defer f.Close()
|
| 651 |
|
|
|
| 652 |
|
|
f.Write([]byte("hello, world\n"))
|
| 653 |
|
|
f.Close()
|
| 654 |
|
|
|
| 655 |
|
|
st, err := Stat(f.Name())
|
| 656 |
|
|
if err != nil {
|
| 657 |
|
|
t.Fatalf("Stat %s: %s", f.Name(), err)
|
| 658 |
|
|
}
|
| 659 |
|
|
preStat := st
|
| 660 |
|
|
|
| 661 |
|
|
// Move access and modification time back a second
|
| 662 |
|
|
at := Atime(preStat)
|
| 663 |
|
|
mt := preStat.ModTime()
|
| 664 |
|
|
err = Chtimes(f.Name(), at.Add(-time.Second), mt.Add(-time.Second))
|
| 665 |
|
|
if err != nil {
|
| 666 |
|
|
t.Fatalf("Chtimes %s: %s", f.Name(), err)
|
| 667 |
|
|
}
|
| 668 |
|
|
|
| 669 |
|
|
st, err = Stat(f.Name())
|
| 670 |
|
|
if err != nil {
|
| 671 |
|
|
t.Fatalf("second Stat %s: %s", f.Name(), err)
|
| 672 |
|
|
}
|
| 673 |
|
|
postStat := st
|
| 674 |
|
|
|
| 675 |
|
|
/* Plan 9:
|
| 676 |
|
|
Mtime is the time of the last change of content. Similarly, atime is set whenever the
|
| 677 |
|
|
contents are accessed; also, it is set whenever mtime is set.
|
| 678 |
|
|
*/
|
| 679 |
|
|
pat := Atime(postStat)
|
| 680 |
|
|
pmt := postStat.ModTime()
|
| 681 |
|
|
if !pat.Before(at) && runtime.GOOS != "plan9" {
|
| 682 |
|
|
t.Errorf("AccessTime didn't go backwards; was=%d, after=%d", at, pat)
|
| 683 |
|
|
}
|
| 684 |
|
|
|
| 685 |
|
|
if !pmt.Before(mt) {
|
| 686 |
|
|
t.Errorf("ModTime didn't go backwards; was=%d, after=%d", mt, pmt)
|
| 687 |
|
|
}
|
| 688 |
|
|
}
|
| 689 |
|
|
|
| 690 |
|
|
func TestChdirAndGetwd(t *testing.T) {
|
| 691 |
|
|
// TODO(brainman): file.Chdir() is not implemented on windows.
|
| 692 |
|
|
if runtime.GOOS == "windows" {
|
| 693 |
|
|
return
|
| 694 |
|
|
}
|
| 695 |
|
|
fd, err := Open(".")
|
| 696 |
|
|
if err != nil {
|
| 697 |
|
|
t.Fatalf("Open .: %s", err)
|
| 698 |
|
|
}
|
| 699 |
|
|
// These are chosen carefully not to be symlinks on a Mac
|
| 700 |
|
|
// (unlike, say, /var, /etc, and /tmp).
|
| 701 |
|
|
dirs := []string{"/", "/usr/bin"}
|
| 702 |
|
|
// /usr/bin does not usually exist on Plan 9.
|
| 703 |
|
|
if runtime.GOOS == "plan9" {
|
| 704 |
|
|
dirs = []string{"/", "/usr"}
|
| 705 |
|
|
}
|
| 706 |
|
|
for mode := 0; mode < 2; mode++ {
|
| 707 |
|
|
for _, d := range dirs {
|
| 708 |
|
|
if mode == 0 {
|
| 709 |
|
|
err = Chdir(d)
|
| 710 |
|
|
} else {
|
| 711 |
|
|
fd1, err := Open(d)
|
| 712 |
|
|
if err != nil {
|
| 713 |
|
|
t.Errorf("Open %s: %s", d, err)
|
| 714 |
|
|
continue
|
| 715 |
|
|
}
|
| 716 |
|
|
err = fd1.Chdir()
|
| 717 |
|
|
fd1.Close()
|
| 718 |
|
|
}
|
| 719 |
|
|
pwd, err1 := Getwd()
|
| 720 |
|
|
err2 := fd.Chdir()
|
| 721 |
|
|
if err2 != nil {
|
| 722 |
|
|
// We changed the current directory and cannot go back.
|
| 723 |
|
|
// Don't let the tests continue; they'll scribble
|
| 724 |
|
|
// all over some other directory.
|
| 725 |
|
|
fmt.Fprintf(Stderr, "fchdir back to dot failed: %s\n", err2)
|
| 726 |
|
|
Exit(1)
|
| 727 |
|
|
}
|
| 728 |
|
|
if err != nil {
|
| 729 |
|
|
fd.Close()
|
| 730 |
|
|
t.Fatalf("Chdir %s: %s", d, err)
|
| 731 |
|
|
}
|
| 732 |
|
|
if err1 != nil {
|
| 733 |
|
|
fd.Close()
|
| 734 |
|
|
t.Fatalf("Getwd in %s: %s", d, err1)
|
| 735 |
|
|
}
|
| 736 |
|
|
if pwd != d {
|
| 737 |
|
|
fd.Close()
|
| 738 |
|
|
t.Fatalf("Getwd returned %q want %q", pwd, d)
|
| 739 |
|
|
}
|
| 740 |
|
|
}
|
| 741 |
|
|
}
|
| 742 |
|
|
fd.Close()
|
| 743 |
|
|
}
|
| 744 |
|
|
|
| 745 |
|
|
func TestTime(t *testing.T) {
|
| 746 |
|
|
// Just want to check that Time() is getting something.
|
| 747 |
|
|
// A common failure mode on Darwin is to get 0, 0,
|
| 748 |
|
|
// because it returns the time in registers instead of
|
| 749 |
|
|
// filling in the structure passed to the system call.
|
| 750 |
|
|
// Too bad the compiler doesn't know that
|
| 751 |
|
|
// 365.24*86400 is an integer.
|
| 752 |
|
|
sec, nsec, err := Time()
|
| 753 |
|
|
if sec < (2009-1970)*36524*864 {
|
| 754 |
|
|
t.Errorf("Time() = %d, %d, %s; not plausible", sec, nsec, err)
|
| 755 |
|
|
}
|
| 756 |
|
|
}
|
| 757 |
|
|
|
| 758 |
|
|
func TestSeek(t *testing.T) {
|
| 759 |
|
|
f := newFile("TestSeek", t)
|
| 760 |
|
|
defer Remove(f.Name())
|
| 761 |
|
|
defer f.Close()
|
| 762 |
|
|
|
| 763 |
|
|
const data = "hello, world\n"
|
| 764 |
|
|
io.WriteString(f, data)
|
| 765 |
|
|
|
| 766 |
|
|
type test struct {
|
| 767 |
|
|
in int64
|
| 768 |
|
|
whence int
|
| 769 |
|
|
out int64
|
| 770 |
|
|
}
|
| 771 |
|
|
var tests = []test{
|
| 772 |
|
|
{0, 1, int64(len(data))},
|
| 773 |
|
|
{0, 0, 0},
|
| 774 |
|
|
{5, 0, 5},
|
| 775 |
|
|
{0, 2, int64(len(data))},
|
| 776 |
|
|
{0, 0, 0},
|
| 777 |
|
|
{-1, 2, int64(len(data)) - 1},
|
| 778 |
|
|
{1 << 33, 0, 1 << 33},
|
| 779 |
|
|
{1 << 33, 2, 1<<33 + int64(len(data))},
|
| 780 |
|
|
}
|
| 781 |
|
|
for i, tt := range tests {
|
| 782 |
|
|
off, err := f.Seek(tt.in, tt.whence)
|
| 783 |
|
|
if off != tt.out || err != nil {
|
| 784 |
|
|
if e, ok := err.(*PathError); ok && e.Err == EINVAL && tt.out > 1<<32 {
|
| 785 |
|
|
// Reiserfs rejects the big seeks.
|
| 786 |
|
|
// http://code.google.com/p/go/issues/detail?id=91
|
| 787 |
|
|
break
|
| 788 |
|
|
}
|
| 789 |
|
|
t.Errorf("#%d: Seek(%v, %v) = %v, %v want %v, nil", i, tt.in, tt.whence, off, err, tt.out)
|
| 790 |
|
|
}
|
| 791 |
|
|
}
|
| 792 |
|
|
}
|
| 793 |
|
|
|
| 794 |
|
|
type openErrorTest struct {
|
| 795 |
|
|
path string
|
| 796 |
|
|
mode int
|
| 797 |
|
|
error error
|
| 798 |
|
|
}
|
| 799 |
|
|
|
| 800 |
|
|
var openErrorTests = []openErrorTest{
|
| 801 |
|
|
{
|
| 802 |
|
|
sfdir + "/no-such-file",
|
| 803 |
|
|
O_RDONLY,
|
| 804 |
|
|
ENOENT,
|
| 805 |
|
|
},
|
| 806 |
|
|
{
|
| 807 |
|
|
sfdir,
|
| 808 |
|
|
O_WRONLY,
|
| 809 |
|
|
EISDIR,
|
| 810 |
|
|
},
|
| 811 |
|
|
{
|
| 812 |
|
|
sfdir + "/" + sfname + "/no-such-file",
|
| 813 |
|
|
O_WRONLY,
|
| 814 |
|
|
ENOTDIR,
|
| 815 |
|
|
},
|
| 816 |
|
|
}
|
| 817 |
|
|
|
| 818 |
|
|
func TestOpenError(t *testing.T) {
|
| 819 |
|
|
for _, tt := range openErrorTests {
|
| 820 |
|
|
f, err := OpenFile(tt.path, tt.mode, 0)
|
| 821 |
|
|
if err == nil {
|
| 822 |
|
|
t.Errorf("Open(%q, %d) succeeded", tt.path, tt.mode)
|
| 823 |
|
|
f.Close()
|
| 824 |
|
|
continue
|
| 825 |
|
|
}
|
| 826 |
|
|
perr, ok := err.(*PathError)
|
| 827 |
|
|
if !ok {
|
| 828 |
|
|
t.Errorf("Open(%q, %d) returns error of %T type; want *PathError", tt.path, tt.mode, err)
|
| 829 |
|
|
}
|
| 830 |
|
|
if perr.Err != tt.error {
|
| 831 |
|
|
if runtime.GOOS == "plan9" {
|
| 832 |
|
|
syscallErrStr := perr.Err.Error()
|
| 833 |
|
|
expectedErrStr := strings.Replace(tt.error.Error(), "file ", "", 1)
|
| 834 |
|
|
if !strings.HasSuffix(syscallErrStr, expectedErrStr) {
|
| 835 |
|
|
t.Errorf("Open(%q, %d) = _, %q; want suffix %q", tt.path, tt.mode, syscallErrStr, expectedErrStr)
|
| 836 |
|
|
}
|
| 837 |
|
|
} else {
|
| 838 |
|
|
t.Errorf("Open(%q, %d) = _, %q; want %q", tt.path, tt.mode, perr.Err.Error(), tt.error.Error())
|
| 839 |
|
|
}
|
| 840 |
|
|
}
|
| 841 |
|
|
}
|
| 842 |
|
|
}
|
| 843 |
|
|
|
| 844 |
|
|
func TestOpenNoName(t *testing.T) {
|
| 845 |
|
|
f, err := Open("")
|
| 846 |
|
|
if err == nil {
|
| 847 |
|
|
t.Fatal(`Open("") succeeded`)
|
| 848 |
|
|
f.Close()
|
| 849 |
|
|
}
|
| 850 |
|
|
}
|
| 851 |
|
|
|
| 852 |
|
|
func run(t *testing.T, cmd []string) string {
|
| 853 |
|
|
// Run /bin/hostname and collect output.
|
| 854 |
|
|
r, w, err := Pipe()
|
| 855 |
|
|
if err != nil {
|
| 856 |
|
|
t.Fatal(err)
|
| 857 |
|
|
}
|
| 858 |
|
|
p, err := StartProcess("/bin/hostname", []string{"hostname"}, &ProcAttr{Files: []*File{nil, w, Stderr}})
|
| 859 |
|
|
if err != nil {
|
| 860 |
|
|
t.Fatal(err)
|
| 861 |
|
|
}
|
| 862 |
|
|
defer p.Release()
|
| 863 |
|
|
w.Close()
|
| 864 |
|
|
|
| 865 |
|
|
var b bytes.Buffer
|
| 866 |
|
|
io.Copy(&b, r)
|
| 867 |
|
|
_, err = p.Wait(0)
|
| 868 |
|
|
if err != nil {
|
| 869 |
|
|
t.Fatalf("run hostname Wait: %v", err)
|
| 870 |
|
|
}
|
| 871 |
|
|
err = p.Kill()
|
| 872 |
|
|
if err == nil {
|
| 873 |
|
|
t.Errorf("expected an error from Kill running 'hostname'")
|
| 874 |
|
|
}
|
| 875 |
|
|
output := b.String()
|
| 876 |
|
|
if n := len(output); n > 0 && output[n-1] == '\n' {
|
| 877 |
|
|
output = output[0 : n-1]
|
| 878 |
|
|
}
|
| 879 |
|
|
if output == "" {
|
| 880 |
|
|
t.Fatalf("%v produced no output", cmd)
|
| 881 |
|
|
}
|
| 882 |
|
|
|
| 883 |
|
|
return output
|
| 884 |
|
|
}
|
| 885 |
|
|
|
| 886 |
|
|
func TestHostname(t *testing.T) {
|
| 887 |
|
|
// There is no other way to fetch hostname on windows, but via winapi.
|
| 888 |
|
|
// On Plan 9 it is can be taken from #c/sysname as Hostname() does.
|
| 889 |
|
|
if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
|
| 890 |
|
|
return
|
| 891 |
|
|
}
|
| 892 |
|
|
|
| 893 |
|
|
// Check internal Hostname() against the output of /bin/hostname.
|
| 894 |
|
|
// Allow that the internal Hostname returns a Fully Qualified Domain Name
|
| 895 |
|
|
// and the /bin/hostname only returns the first component
|
| 896 |
|
|
hostname, err := Hostname()
|
| 897 |
|
|
if err != nil {
|
| 898 |
|
|
t.Fatalf("%v", err)
|
| 899 |
|
|
}
|
| 900 |
|
|
want := run(t, []string{"/bin/hostname"})
|
| 901 |
|
|
if hostname != want {
|
| 902 |
|
|
i := strings.Index(hostname, ".")
|
| 903 |
|
|
if i < 0 || hostname[0:i] != want {
|
| 904 |
|
|
t.Errorf("Hostname() = %q, want %q", hostname, want)
|
| 905 |
|
|
}
|
| 906 |
|
|
}
|
| 907 |
|
|
}
|
| 908 |
|
|
|
| 909 |
|
|
func TestReadAt(t *testing.T) {
|
| 910 |
|
|
f := newFile("TestReadAt", t)
|
| 911 |
|
|
defer Remove(f.Name())
|
| 912 |
|
|
defer f.Close()
|
| 913 |
|
|
|
| 914 |
|
|
const data = "hello, world\n"
|
| 915 |
|
|
io.WriteString(f, data)
|
| 916 |
|
|
|
| 917 |
|
|
b := make([]byte, 5)
|
| 918 |
|
|
n, err := f.ReadAt(b, 7)
|
| 919 |
|
|
if err != nil || n != len(b) {
|
| 920 |
|
|
t.Fatalf("ReadAt 7: %d, %v", n, err)
|
| 921 |
|
|
}
|
| 922 |
|
|
if string(b) != "world" {
|
| 923 |
|
|
t.Fatalf("ReadAt 7: have %q want %q", string(b), "world")
|
| 924 |
|
|
}
|
| 925 |
|
|
}
|
| 926 |
|
|
|
| 927 |
|
|
func TestWriteAt(t *testing.T) {
|
| 928 |
|
|
f := newFile("TestWriteAt", t)
|
| 929 |
|
|
defer Remove(f.Name())
|
| 930 |
|
|
defer f.Close()
|
| 931 |
|
|
|
| 932 |
|
|
const data = "hello, world\n"
|
| 933 |
|
|
io.WriteString(f, data)
|
| 934 |
|
|
|
| 935 |
|
|
n, err := f.WriteAt([]byte("WORLD"), 7)
|
| 936 |
|
|
if err != nil || n != 5 {
|
| 937 |
|
|
t.Fatalf("WriteAt 7: %d, %v", n, err)
|
| 938 |
|
|
}
|
| 939 |
|
|
|
| 940 |
|
|
b, err := ioutil.ReadFile(f.Name())
|
| 941 |
|
|
if err != nil {
|
| 942 |
|
|
t.Fatalf("ReadFile %s: %v", f.Name(), err)
|
| 943 |
|
|
}
|
| 944 |
|
|
if string(b) != "hello, WORLD\n" {
|
| 945 |
|
|
t.Fatalf("after write: have %q want %q", string(b), "hello, WORLD\n")
|
| 946 |
|
|
}
|
| 947 |
|
|
}
|
| 948 |
|
|
|
| 949 |
|
|
func writeFile(t *testing.T, fname string, flag int, text string) string {
|
| 950 |
|
|
f, err := OpenFile(fname, flag, 0666)
|
| 951 |
|
|
if err != nil {
|
| 952 |
|
|
t.Fatalf("Open: %v", err)
|
| 953 |
|
|
}
|
| 954 |
|
|
n, err := io.WriteString(f, text)
|
| 955 |
|
|
if err != nil {
|
| 956 |
|
|
t.Fatalf("WriteString: %d, %v", n, err)
|
| 957 |
|
|
}
|
| 958 |
|
|
f.Close()
|
| 959 |
|
|
data, err := ioutil.ReadFile(fname)
|
| 960 |
|
|
if err != nil {
|
| 961 |
|
|
t.Fatalf("ReadFile: %v", err)
|
| 962 |
|
|
}
|
| 963 |
|
|
return string(data)
|
| 964 |
|
|
}
|
| 965 |
|
|
|
| 966 |
|
|
func TestAppend(t *testing.T) {
|
| 967 |
|
|
const f = "append.txt"
|
| 968 |
|
|
defer Remove(f)
|
| 969 |
|
|
s := writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")
|
| 970 |
|
|
if s != "new" {
|
| 971 |
|
|
t.Fatalf("writeFile: have %q want %q", s, "new")
|
| 972 |
|
|
}
|
| 973 |
|
|
s = writeFile(t, f, O_APPEND|O_RDWR, "|append")
|
| 974 |
|
|
if s != "new|append" {
|
| 975 |
|
|
t.Fatalf("writeFile: have %q want %q", s, "new|append")
|
| 976 |
|
|
}
|
| 977 |
|
|
s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "|append")
|
| 978 |
|
|
if s != "new|append|append" {
|
| 979 |
|
|
t.Fatalf("writeFile: have %q want %q", s, "new|append|append")
|
| 980 |
|
|
}
|
| 981 |
|
|
err := Remove(f)
|
| 982 |
|
|
if err != nil {
|
| 983 |
|
|
t.Fatalf("Remove: %v", err)
|
| 984 |
|
|
}
|
| 985 |
|
|
s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "new&append")
|
| 986 |
|
|
if s != "new&append" {
|
| 987 |
|
|
t.Fatalf("writeFile: after append have %q want %q", s, "new&append")
|
| 988 |
|
|
}
|
| 989 |
|
|
s = writeFile(t, f, O_CREATE|O_RDWR, "old")
|
| 990 |
|
|
if s != "old&append" {
|
| 991 |
|
|
t.Fatalf("writeFile: after create have %q want %q", s, "old&append")
|
| 992 |
|
|
}
|
| 993 |
|
|
s = writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")
|
| 994 |
|
|
if s != "new" {
|
| 995 |
|
|
t.Fatalf("writeFile: after truncate have %q want %q", s, "new")
|
| 996 |
|
|
}
|
| 997 |
|
|
}
|
| 998 |
|
|
|
| 999 |
|
|
func TestStatDirWithTrailingSlash(t *testing.T) {
|
| 1000 |
|
|
// Create new dir, in _test so it will get
|
| 1001 |
|
|
// cleaned up by make if not by us.
|
| 1002 |
|
|
path := "_test/_TestStatDirWithSlash_"
|
| 1003 |
|
|
err := MkdirAll(path, 0777)
|
| 1004 |
|
|
if err != nil {
|
| 1005 |
|
|
t.Fatalf("MkdirAll %q: %s", path, err)
|
| 1006 |
|
|
}
|
| 1007 |
|
|
defer RemoveAll(path)
|
| 1008 |
|
|
|
| 1009 |
|
|
// Stat of path should succeed.
|
| 1010 |
|
|
_, err = Stat(path)
|
| 1011 |
|
|
if err != nil {
|
| 1012 |
|
|
t.Fatal("stat failed:", err)
|
| 1013 |
|
|
}
|
| 1014 |
|
|
|
| 1015 |
|
|
// Stat of path+"/" should succeed too.
|
| 1016 |
|
|
_, err = Stat(path + "/")
|
| 1017 |
|
|
if err != nil {
|
| 1018 |
|
|
t.Fatal("stat failed:", err)
|
| 1019 |
|
|
}
|
| 1020 |
|
|
}
|
| 1021 |
|
|
|
| 1022 |
|
|
func TestNilWaitmsgString(t *testing.T) {
|
| 1023 |
|
|
var w *Waitmsg
|
| 1024 |
|
|
s := w.String()
|
| 1025 |
|
|
if s != "" {
|
| 1026 |
|
|
t.Errorf("(*Waitmsg)(nil).String() = %q, want %q", s, "")
|
| 1027 |
|
|
}
|
| 1028 |
|
|
}
|
