1339 lines
30 KiB
Go
1339 lines
30 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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"io"
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"io/ioutil"
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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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"sort"
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"strings"
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"syscall"
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"testing"
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"text/template"
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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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"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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"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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if err != nil {
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t.Fatal("open failed:", err)
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}
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defer file.Close()
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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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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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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 %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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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 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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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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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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file1, err2 := Open(dir)
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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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defer file1.Close()
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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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}
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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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}
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}
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func TestReaddirNValues(t *testing.T) {
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if testing.Short() {
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t.Skip("test.short; skipping")
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}
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("TempDir: %v", err)
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}
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defer RemoveAll(dir)
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for i := 1; i <= 105; i++ {
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f, err := Create(filepath.Join(dir, fmt.Sprintf("%d", i)))
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if err != nil {
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t.Fatalf("Create: %v", err)
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}
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f.Write([]byte(strings.Repeat("X", i)))
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f.Close()
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}
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var d *File
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openDir := func() {
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var err error
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d, err = Open(dir)
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if err != nil {
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t.Fatalf("Open directory: %v", err)
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}
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}
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readDirExpect := func(n, want int, wantErr error) {
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fi, err := d.Readdir(n)
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if err != wantErr {
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t.Fatalf("Readdir of %d got error %v, want %v", n, err, wantErr)
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}
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if g, e := len(fi), want; g != e {
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t.Errorf("Readdir of %d got %d files, want %d", n, g, e)
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}
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}
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readDirNamesExpect := func(n, want int, wantErr error) {
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fi, err := d.Readdirnames(n)
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if err != wantErr {
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t.Fatalf("Readdirnames of %d got error %v, want %v", n, err, wantErr)
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}
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if g, e := len(fi), want; g != e {
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t.Errorf("Readdirnames of %d got %d files, want %d", n, g, e)
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}
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}
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for _, fn := range []func(int, int, error){readDirExpect, readDirNamesExpect} {
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// Test the slurp case
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openDir()
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fn(0, 105, nil)
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fn(0, 0, nil)
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d.Close()
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// Slurp with -1 instead
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openDir()
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fn(-1, 105, nil)
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fn(-2, 0, nil)
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fn(0, 0, nil)
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d.Close()
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// Test the bounded case
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openDir()
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fn(1, 1, nil)
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fn(2, 2, nil)
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fn(105, 102, nil) // and tests buffer >100 case
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fn(3, 0, io.EOF)
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d.Close()
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}
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}
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func touch(t *testing.T, name string) {
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f, err := Create(name)
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if err != nil {
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t.Fatal(err)
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}
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if err := f.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestReaddirStatFailures(t *testing.T) {
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switch runtime.GOOS {
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case "windows", "plan9":
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// Windows and Plan 9 already do this correctly,
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// but are structured with different syscalls such
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// that they don't use Lstat, so the hook below for
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// testing it wouldn't work.
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t.Skipf("skipping test on %v", runtime.GOOS)
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}
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("TempDir: %v", err)
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}
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defer RemoveAll(dir)
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touch(t, filepath.Join(dir, "good1"))
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touch(t, filepath.Join(dir, "x")) // will disappear or have an error
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touch(t, filepath.Join(dir, "good2"))
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defer func() {
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*LstatP = Lstat
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}()
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var xerr error // error to return for x
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*LstatP = func(path string) (FileInfo, error) {
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if xerr != nil && strings.HasSuffix(path, "x") {
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return nil, xerr
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}
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return Lstat(path)
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}
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readDir := func() ([]FileInfo, error) {
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d, err := Open(dir)
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if err != nil {
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t.Fatal(err)
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}
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defer d.Close()
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return d.Readdir(-1)
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}
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mustReadDir := func(testName string) []FileInfo {
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fis, err := readDir()
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if err != nil {
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t.Fatalf("%s: Readdir: %v", testName, err)
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}
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return fis
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}
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names := func(fis []FileInfo) []string {
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s := make([]string, len(fis))
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for i, fi := range fis {
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s[i] = fi.Name()
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}
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sort.Strings(s)
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return s
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}
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if got, want := names(mustReadDir("inital readdir")),
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[]string{"good1", "good2", "x"}; !reflect.DeepEqual(got, want) {
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t.Errorf("initial readdir got %q; want %q", got, want)
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}
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xerr = ErrNotExist
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if got, want := names(mustReadDir("with x disappearing")),
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[]string{"good1", "good2"}; !reflect.DeepEqual(got, want) {
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t.Errorf("with x disappearing, got %q; want %q", got, want)
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}
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xerr = errors.New("some real error")
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if _, err := readDir(); err != xerr {
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t.Errorf("with a non-ErrNotExist error, got error %v; want %v", err, xerr)
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}
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}
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func TestHardLink(t *testing.T) {
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// Hardlinks are not supported under windows or Plan 9.
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if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
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return
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}
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from, to := "hardlinktestfrom", "hardlinktestto"
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Remove(from) // Just in case.
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file, err := Create(to)
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if err != nil {
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t.Fatalf("open %q failed: %v", to, err)
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}
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defer Remove(to)
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if err = file.Close(); err != nil {
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t.Errorf("close %q failed: %v", to, err)
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}
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err = Link(to, from)
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if err != nil {
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t.Fatalf("link %q, %q failed: %v", to, from, err)
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}
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defer Remove(from)
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tostat, err := Stat(to)
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if err != nil {
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t.Fatalf("stat %q failed: %v", to, err)
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}
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fromstat, err := Stat(from)
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if err != nil {
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t.Fatalf("stat %q failed: %v", from, err)
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}
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if !SameFile(tostat, fromstat) {
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t.Errorf("link %q, %q did not create hard link", to, from)
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}
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}
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func TestSymlink(t *testing.T) {
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switch runtime.GOOS {
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case "windows", "plan9", "nacl":
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t.Skipf("skipping on %s", runtime.GOOS)
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}
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from, to := "symlinktestfrom", "symlinktestto"
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Remove(from) // Just in case.
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file, err := Create(to)
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if err != nil {
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t.Fatalf("open %q failed: %v", to, err)
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}
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defer Remove(to)
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if err = file.Close(); err != nil {
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t.Errorf("close %q failed: %v", to, err)
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}
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err = Symlink(to, from)
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if err != nil {
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t.Fatalf("symlink %q, %q failed: %v", to, from, err)
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}
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defer Remove(from)
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tostat, err := Lstat(to)
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if err != nil {
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t.Fatalf("stat %q failed: %v", to, err)
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}
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if tostat.Mode()&ModeSymlink != 0 {
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t.Fatalf("stat %q claims to have found a symlink", to)
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}
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fromstat, err := Stat(from)
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if err != nil {
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t.Fatalf("stat %q failed: %v", from, err)
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}
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if !SameFile(tostat, fromstat) {
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t.Errorf("symlink %q, %q did not create symlink", to, from)
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}
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fromstat, err = Lstat(from)
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if err != nil {
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t.Fatalf("lstat %q failed: %v", from, err)
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}
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if fromstat.Mode()&ModeSymlink == 0 {
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t.Fatalf("symlink %q, %q did not create symlink", to, from)
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}
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fromstat, err = Stat(from)
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if err != nil {
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t.Fatalf("stat %q failed: %v", from, err)
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}
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if fromstat.Mode()&ModeSymlink != 0 {
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t.Fatalf("stat %q did not follow symlink", from)
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}
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s, err := Readlink(from)
|
|
if err != nil {
|
|
t.Fatalf("readlink %q failed: %v", from, err)
|
|
}
|
|
if s != to {
|
|
t.Fatalf("after symlink %q != %q", s, to)
|
|
}
|
|
file, err = Open(from)
|
|
if err != nil {
|
|
t.Fatalf("open %q failed: %v", from, err)
|
|
}
|
|
file.Close()
|
|
}
|
|
|
|
func TestLongSymlink(t *testing.T) {
|
|
switch runtime.GOOS {
|
|
case "windows", "plan9", "nacl":
|
|
t.Skipf("skipping on %s", runtime.GOOS)
|
|
}
|
|
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"
|
|
Remove(from) // Just in case.
|
|
err := Symlink(s, from)
|
|
if err != nil {
|
|
t.Fatalf("symlink %q, %q failed: %v", s, from, err)
|
|
}
|
|
defer Remove(from)
|
|
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) {
|
|
from, to := "renamefrom", "renameto"
|
|
Remove(to) // Just in case.
|
|
file, err := Create(from)
|
|
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 = Rename(from, to)
|
|
if err != nil {
|
|
t.Fatalf("rename %q, %q failed: %v", to, from, err)
|
|
}
|
|
defer Remove(to)
|
|
_, err = Stat(to)
|
|
if err != nil {
|
|
t.Errorf("stat %q failed: %v", to, err)
|
|
}
|
|
}
|
|
|
|
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) {
|
|
if runtime.GOOS == "nacl" {
|
|
t.Skip("skipping on nacl")
|
|
}
|
|
|
|
var dir, cmd string
|
|
var args []string
|
|
if runtime.GOOS == "windows" {
|
|
cmd = Getenv("COMSPEC")
|
|
dir = Getenv("SystemRoot")
|
|
args = []string{"/c", "cd"}
|
|
} else {
|
|
cmd = "/bin/pwd"
|
|
dir = "/"
|
|
args = []string{}
|
|
}
|
|
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()&0777 != mode {
|
|
t.Errorf("Stat %q: mode %#o want %#o", path, dir.Mode(), mode)
|
|
}
|
|
}
|
|
|
|
func TestChmod(t *testing.T) {
|
|
// Chmod is not supported under windows.
|
|
if runtime.GOOS == "windows" {
|
|
return
|
|
}
|
|
f := newFile("TestChmod", t)
|
|
defer Remove(f.Name())
|
|
defer f.Close()
|
|
|
|
if err := Chmod(f.Name(), 0456); err != nil {
|
|
t.Fatalf("chmod %s 0456: %s", f.Name(), err)
|
|
}
|
|
checkMode(t, f.Name(), 0456)
|
|
|
|
if err := f.Chmod(0123); err != nil {
|
|
t.Fatalf("chmod %s 0123: %s", f.Name(), err)
|
|
}
|
|
checkMode(t, f.Name(), 0123)
|
|
}
|
|
|
|
func checkSize(t *testing.T, f *File, size int64) {
|
|
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() 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())
|
|
defer f.Close()
|
|
|
|
f.Write([]byte("hello, world\n"))
|
|
f.Close()
|
|
|
|
st, err := Stat(f.Name())
|
|
if err != nil {
|
|
t.Fatalf("Stat %s: %s", f.Name(), err)
|
|
}
|
|
preStat := st
|
|
|
|
// Move access and modification time back a second
|
|
at := Atime(preStat)
|
|
mt := preStat.ModTime()
|
|
err = Chtimes(f.Name(), at.Add(-time.Second), mt.Add(-time.Second))
|
|
if err != nil {
|
|
t.Fatalf("Chtimes %s: %s", f.Name(), err)
|
|
}
|
|
|
|
st, err = Stat(f.Name())
|
|
if err != nil {
|
|
t.Fatalf("second Stat %s: %s", f.Name(), err)
|
|
}
|
|
postStat := st
|
|
|
|
/* Plan 9, NaCl:
|
|
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.
|
|
*/
|
|
pat := Atime(postStat)
|
|
pmt := postStat.ModTime()
|
|
if !pat.Before(at) && runtime.GOOS != "plan9" && runtime.GOOS != "nacl" {
|
|
t.Errorf("AccessTime didn't go backwards; was=%d, after=%d", at, pat)
|
|
}
|
|
|
|
if !pmt.Before(mt) {
|
|
t.Errorf("ModTime didn't go backwards; was=%d, after=%d", mt, pmt)
|
|
}
|
|
}
|
|
|
|
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, and /tmp).
|
|
dirs := []string{"/", "/usr/bin"}
|
|
// /usr/bin does not usually exist on Plan 9.
|
|
if runtime.GOOS == "plan9" {
|
|
dirs = []string{"/", "/usr"}
|
|
}
|
|
for mode := 0; mode < 2; mode++ {
|
|
for _, d := range dirs {
|
|
if mode == 0 {
|
|
err = Chdir(d)
|
|
} else {
|
|
fd1, err := Open(d)
|
|
if err != nil {
|
|
t.Errorf("Open %s: %s", d, err)
|
|
continue
|
|
}
|
|
err = fd1.Chdir()
|
|
fd1.Close()
|
|
}
|
|
pwd, err1 := Getwd()
|
|
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()
|
|
}
|
|
|
|
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, 1, int64(len(data))},
|
|
{0, 0, 0},
|
|
{5, 0, 5},
|
|
{0, 2, int64(len(data))},
|
|
{0, 0, 0},
|
|
{-1, 2, int64(len(data)) - 1},
|
|
{1 << 33, 0, 1 << 33},
|
|
{1 << 33, 2, 1<<33 + int64(len(data))},
|
|
}
|
|
for i, tt := range tests {
|
|
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 {
|
|
// Reiserfs rejects the big seeks.
|
|
// http://code.google.com/p/go/issues/detail?id=91
|
|
break
|
|
}
|
|
t.Errorf("#%d: Seek(%v, %v) = %v, %v want %v, nil", i, tt.in, tt.whence, off, err, tt.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
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) {
|
|
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 {
|
|
t.Fatal(`Open("") succeeded`)
|
|
f.Close()
|
|
}
|
|
}
|
|
|
|
func run(t *testing.T, cmd []string) string {
|
|
// Run /bin/hostname and collect output.
|
|
r, w, err := Pipe()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer r.Close()
|
|
p, err := StartProcess("/bin/hostname", []string{"hostname"}, &ProcAttr{Files: []*File{nil, w, Stderr}})
|
|
if err != nil {
|
|
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("%v produced no output", cmd)
|
|
}
|
|
|
|
return output
|
|
}
|
|
|
|
func TestHostname(t *testing.T) {
|
|
// There is no other way to fetch hostname on windows, but via winapi.
|
|
// On Plan 9 it is can be taken from #c/sysname as Hostname() does.
|
|
switch runtime.GOOS {
|
|
case "windows", "plan9", "nacl":
|
|
t.Skipf("skipping on %s", runtime.GOOS)
|
|
}
|
|
|
|
// 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
|
|
hostname, err := Hostname()
|
|
if err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
want := run(t, []string{"/bin/hostname"})
|
|
if hostname != want {
|
|
i := strings.Index(hostname, ".")
|
|
if i < 0 || hostname[0:i] != 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")
|
|
}
|
|
}
|
|
|
|
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 := ioutil.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")
|
|
}
|
|
}
|
|
|
|
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 := ioutil.ReadFile(fname)
|
|
if err != nil {
|
|
t.Fatalf("ReadFile: %v", err)
|
|
}
|
|
return string(data)
|
|
}
|
|
|
|
func TestAppend(t *testing.T) {
|
|
const f = "append.txt"
|
|
defer Remove(f)
|
|
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, err := ioutil.TempDir("", "/_TestStatDirWithSlash_")
|
|
if err != nil {
|
|
t.Fatalf("TempDir: %s", err)
|
|
}
|
|
defer RemoveAll(path)
|
|
|
|
// Stat of path should succeed.
|
|
_, err = Stat(path)
|
|
if err != nil {
|
|
t.Fatalf("stat %s failed: %s", path, err)
|
|
}
|
|
|
|
// Stat of path+"/" should succeed too.
|
|
path += "/"
|
|
_, err = Stat(path)
|
|
if 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) {
|
|
fa, err := Create("a")
|
|
if err != nil {
|
|
t.Fatalf("Create(a): %v", err)
|
|
}
|
|
defer Remove(fa.Name())
|
|
fa.Close()
|
|
fb, err := Create("b")
|
|
if err != nil {
|
|
t.Fatalf("Create(b): %v", err)
|
|
}
|
|
defer Remove(fb.Name())
|
|
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 TestDevNullFile(t *testing.T) {
|
|
f, err := Open(DevNull)
|
|
if err != nil {
|
|
t.Fatalf("Open(%s): %v", DevNull, err)
|
|
}
|
|
defer f.Close()
|
|
fi, err := f.Stat()
|
|
if err != nil {
|
|
t.Fatalf("Stat(%s): %v", DevNull, err)
|
|
}
|
|
name := filepath.Base(DevNull)
|
|
if fi.Name() != name {
|
|
t.Fatalf("wrong file name have %v want %v", fi.Name(), name)
|
|
}
|
|
if fi.Size() != 0 {
|
|
t.Fatalf("wrong file size have %d want 0", fi.Size())
|
|
}
|
|
}
|
|
|
|
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, err := ioutil.TempDir("", "go-build")
|
|
if err != nil {
|
|
t.Fatalf("Failed to create temp directory: %v", err)
|
|
}
|
|
defer RemoveAll(path)
|
|
|
|
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 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 testKillProcess(t *testing.T, processKiller func(p *Process)) {
|
|
t.Skip("gccgo does not have a go command")
|
|
if runtime.GOOS == "nacl" {
|
|
t.Skip("skipping on nacl")
|
|
}
|
|
|
|
dir, err := ioutil.TempDir("", "go-build")
|
|
if err != nil {
|
|
t.Fatalf("Failed to create temp directory: %v", err)
|
|
}
|
|
defer RemoveAll(dir)
|
|
|
|
src := filepath.Join(dir, "main.go")
|
|
f, err := Create(src)
|
|
if err != nil {
|
|
t.Fatalf("Failed to create %v: %v", src, err)
|
|
}
|
|
st := template.Must(template.New("source").Parse(`
|
|
package main
|
|
import "time"
|
|
func main() {
|
|
time.Sleep(time.Second)
|
|
}
|
|
`))
|
|
err = st.Execute(f, nil)
|
|
if err != nil {
|
|
f.Close()
|
|
t.Fatalf("Failed to execute template: %v", err)
|
|
}
|
|
f.Close()
|
|
|
|
exe := filepath.Join(dir, "main.exe")
|
|
output, err := osexec.Command("go", "build", "-o", exe, src).CombinedOutput()
|
|
if err != nil {
|
|
t.Fatalf("Failed to build exe %v: %v %v", exe, err, string(output))
|
|
}
|
|
|
|
cmd := osexec.Command(exe)
|
|
err = cmd.Start()
|
|
if err != nil {
|
|
t.Fatalf("Failed to start test process: %v", err)
|
|
}
|
|
go func() {
|
|
time.Sleep(100 * time.Millisecond)
|
|
processKiller(cmd.Process)
|
|
}()
|
|
err = cmd.Wait()
|
|
if err == nil {
|
|
t.Errorf("Test process succeeded, but expected to fail")
|
|
}
|
|
}
|
|
|
|
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 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, 0); 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)
|
|
}
|
|
}
|
|
}
|