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-rw-r--r--src/pkg/os/os_test.go1058
1 files changed, 1058 insertions, 0 deletions
diff --git a/src/pkg/os/os_test.go b/src/pkg/os/os_test.go
new file mode 100644
index 000000000..4d60333df
--- /dev/null
+++ b/src/pkg/os/os_test.go
@@ -0,0 +1,1058 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package os_test
+
+import (
+ "bytes"
+ "fmt"
+ "io"
+ "io/ioutil"
+ . "os"
+ "path/filepath"
+ "strings"
+ "syscall"
+ "testing"
+)
+
+var dot = []string{
+ "dir_unix.go",
+ "env_unix.go",
+ "error.go",
+ "file.go",
+ "os_test.go",
+ "time.go",
+ "types.go",
+ "stat_darwin.go",
+ "stat_linux.go",
+}
+
+type sysDir struct {
+ name string
+ files []string
+}
+
+var sysdir = func() (sd *sysDir) {
+ switch syscall.OS {
+ case "windows":
+ sd = &sysDir{
+ Getenv("SystemRoot") + "\\system32\\drivers\\etc",
+ []string{
+ "hosts",
+ "networks",
+ "protocol",
+ "services",
+ },
+ }
+ case "plan9":
+ sd = &sysDir{
+ "/lib/ndb",
+ []string{
+ "common",
+ "local",
+ },
+ }
+ default:
+ sd = &sysDir{
+ "/etc",
+ []string{
+ "group",
+ "hosts",
+ "passwd",
+ },
+ }
+ }
+ return
+}()
+
+func size(name string, t *testing.T) int64 {
+ file, err := Open(name)
+ defer file.Close()
+ if err != nil {
+ t.Fatal("open failed:", err)
+ }
+ var buf [100]byte
+ len := 0
+ for {
+ n, e := file.Read(buf[0:])
+ len += n
+ if e == EOF {
+ break
+ }
+ if e != nil {
+ t.Fatal("read failed:", err)
+ }
+ }
+ return int64(len)
+}
+
+func equal(name1, name2 string) (r bool) {
+ switch syscall.OS {
+ case "windows":
+ r = strings.ToLower(name1) == strings.ToLower(name2)
+ default:
+ r = name1 == name2
+ }
+ return
+}
+
+func newFile(testName string, t *testing.T) (f *File) {
+ // Use a local file system, not NFS.
+ // On Unix, override $TMPDIR in case the user
+ // has it set to an NFS-mounted directory.
+ dir := ""
+ if syscall.OS != "windows" {
+ dir = "/tmp"
+ }
+ f, err := ioutil.TempFile(dir, "_Go_"+testName)
+ if err != nil {
+ t.Fatalf("open %s: %s", testName, err)
+ }
+ return
+}
+
+var sfdir = sysdir.name
+var sfname = sysdir.files[0]
+
+func TestStat(t *testing.T) {
+ path := sfdir + "/" + sfname
+ dir, err := Stat(path)
+ if err != nil {
+ t.Fatal("stat failed:", err)
+ }
+ if !equal(sfname, dir.Name) {
+ t.Error("name should be ", sfname, "; is", dir.Name)
+ }
+ filesize := size(path, t)
+ if dir.Size != filesize {
+ t.Error("size should be", filesize, "; is", dir.Size)
+ }
+}
+
+func TestFstat(t *testing.T) {
+ path := sfdir + "/" + sfname
+ file, err1 := Open(path)
+ defer file.Close()
+ if err1 != nil {
+ t.Fatal("open failed:", err1)
+ }
+ dir, err2 := file.Stat()
+ if err2 != nil {
+ t.Fatal("fstat failed:", err2)
+ }
+ if !equal(sfname, dir.Name) {
+ t.Error("name should be ", sfname, "; is", dir.Name)
+ }
+ filesize := size(path, t)
+ if dir.Size != filesize {
+ t.Error("size should be", filesize, "; is", dir.Size)
+ }
+}
+
+func TestLstat(t *testing.T) {
+ path := sfdir + "/" + sfname
+ dir, err := Lstat(path)
+ if err != nil {
+ t.Fatal("lstat failed:", err)
+ }
+ if !equal(sfname, dir.Name) {
+ t.Error("name should be ", sfname, "; is", dir.Name)
+ }
+ filesize := size(path, t)
+ if dir.Size != filesize {
+ t.Error("size should be", filesize, "; is", dir.Size)
+ }
+}
+
+func testReaddirnames(dir string, contents []string, t *testing.T) {
+ file, err := Open(dir)
+ defer file.Close()
+ if err != nil {
+ t.Fatalf("open %q failed: %v", dir, err)
+ }
+ s, err2 := file.Readdirnames(-1)
+ if err2 != nil {
+ t.Fatalf("readdirnames %q failed: %v", dir, err2)
+ }
+ for _, m := range contents {
+ found := false
+ for _, n := range s {
+ if n == "." || n == ".." {
+ t.Errorf("got %s in directory", n)
+ }
+ if equal(m, n) {
+ if found {
+ t.Error("present twice:", m)
+ }
+ found = true
+ }
+ }
+ if !found {
+ t.Error("could not find", m)
+ }
+ }
+}
+
+func testReaddir(dir string, contents []string, t *testing.T) {
+ file, err := Open(dir)
+ defer file.Close()
+ if err != nil {
+ t.Fatalf("open %q failed: %v", dir, err)
+ }
+ s, err2 := file.Readdir(-1)
+ if err2 != nil {
+ t.Fatalf("readdir %q failed: %v", dir, err2)
+ }
+ for _, m := range contents {
+ found := false
+ for _, n := range s {
+ if equal(m, n.Name) {
+ if found {
+ t.Error("present twice:", m)
+ }
+ found = true
+ }
+ }
+ if !found {
+ t.Error("could not find", m)
+ }
+ }
+}
+
+func TestReaddirnames(t *testing.T) {
+ testReaddirnames(".", dot, t)
+ testReaddirnames(sysdir.name, sysdir.files, t)
+}
+
+func TestReaddir(t *testing.T) {
+ testReaddir(".", dot, t)
+ testReaddir(sysdir.name, sysdir.files, t)
+}
+
+// Read the directory one entry at a time.
+func smallReaddirnames(file *File, length int, t *testing.T) []string {
+ names := make([]string, length)
+ count := 0
+ for {
+ d, err := file.Readdirnames(1)
+ if err == EOF {
+ break
+ }
+ if err != nil {
+ t.Fatalf("readdirnames %q failed: %v", file.Name(), err)
+ }
+ if len(d) == 0 {
+ t.Fatalf("readdirnames %q returned empty slice and no error", file.Name())
+ }
+ names[count] = d[0]
+ count++
+ }
+ return names[0:count]
+}
+
+// Check that reading a directory one entry at a time gives the same result
+// as reading it all at once.
+func TestReaddirnamesOneAtATime(t *testing.T) {
+ // big directory that doesn't change often.
+ dir := "/usr/bin"
+ switch syscall.OS {
+ case "windows":
+ dir = Getenv("SystemRoot") + "\\system32"
+ case "plan9":
+ dir = "/bin"
+ }
+ file, err := Open(dir)
+ defer file.Close()
+ if err != nil {
+ t.Fatalf("open %q failed: %v", dir, err)
+ }
+ all, err1 := file.Readdirnames(-1)
+ if err1 != nil {
+ t.Fatalf("readdirnames %q failed: %v", dir, err1)
+ }
+ file1, err2 := Open(dir)
+ if err2 != nil {
+ t.Fatalf("open %q failed: %v", dir, err2)
+ }
+ small := smallReaddirnames(file1, len(all)+100, t) // +100 in case we screw up
+ if len(small) < len(all) {
+ t.Fatalf("len(small) is %d, less than %d", len(small), len(all))
+ }
+ for i, n := range all {
+ if small[i] != n {
+ t.Errorf("small read %q mismatch: %v", small[i], n)
+ }
+ }
+}
+
+func TestReaddirNValues(t *testing.T) {
+ if testing.Short() {
+ t.Logf("test.short; skipping")
+ return
+ }
+ dir, err := ioutil.TempDir("", "")
+ if err != nil {
+ t.Fatalf("TempDir: %v", err)
+ }
+ defer RemoveAll(dir)
+ for i := 1; i <= 105; i++ {
+ f, err := Create(filepath.Join(dir, fmt.Sprintf("%d", i)))
+ if err != nil {
+ t.Fatalf("Create: %v", err)
+ }
+ f.Write([]byte(strings.Repeat("X", i)))
+ f.Close()
+ }
+
+ var d *File
+ openDir := func() {
+ var err Error
+ d, err = Open(dir)
+ if err != nil {
+ t.Fatalf("Open directory: %v", err)
+ }
+ }
+
+ readDirExpect := func(n, want int, wantErr Error) {
+ fi, err := d.Readdir(n)
+ if err != wantErr {
+ t.Fatalf("Readdir of %d got error %v, want %v", n, err, wantErr)
+ }
+ if g, e := len(fi), want; g != e {
+ t.Errorf("Readdir of %d got %d files, want %d", n, g, e)
+ }
+ }
+
+ readDirNamesExpect := func(n, want int, wantErr Error) {
+ fi, err := d.Readdirnames(n)
+ if err != wantErr {
+ t.Fatalf("Readdirnames of %d got error %v, want %v", n, err, wantErr)
+ }
+ if g, e := len(fi), want; g != e {
+ t.Errorf("Readdirnames of %d got %d files, want %d", n, g, e)
+ }
+ }
+
+ for _, fn := range []func(int, int, Error){readDirExpect, readDirNamesExpect} {
+ // Test the slurp case
+ openDir()
+ fn(0, 105, nil)
+ fn(0, 0, nil)
+ d.Close()
+
+ // Slurp with -1 instead
+ openDir()
+ fn(-1, 105, nil)
+ fn(-2, 0, nil)
+ fn(0, 0, nil)
+ d.Close()
+
+ // Test the bounded case
+ openDir()
+ fn(1, 1, nil)
+ fn(2, 2, nil)
+ fn(105, 102, nil) // and tests buffer >100 case
+ fn(3, 0, EOF)
+ d.Close()
+ }
+}
+
+func TestHardLink(t *testing.T) {
+ // Hardlinks are not supported under windows or Plan 9.
+ if syscall.OS == "windows" || syscall.OS == "plan9" {
+ return
+ }
+ from, to := "hardlinktestfrom", "hardlinktestto"
+ Remove(from) // Just in case.
+ file, err := Create(to)
+ if err != nil {
+ t.Fatalf("open %q failed: %v", to, err)
+ }
+ defer Remove(to)
+ if err = file.Close(); err != nil {
+ t.Errorf("close %q failed: %v", to, err)
+ }
+ err = Link(to, from)
+ if err != nil {
+ t.Fatalf("link %q, %q failed: %v", to, from, err)
+ }
+ defer Remove(from)
+ tostat, err := Stat(to)
+ if err != nil {
+ t.Fatalf("stat %q failed: %v", to, err)
+ }
+ fromstat, err := Stat(from)
+ if err != nil {
+ t.Fatalf("stat %q failed: %v", from, err)
+ }
+ if tostat.Dev != fromstat.Dev || tostat.Ino != fromstat.Ino {
+ t.Errorf("link %q, %q did not create hard link", to, from)
+ }
+}
+
+func TestSymLink(t *testing.T) {
+ // Symlinks are not supported under windows or Plan 9.
+ if syscall.OS == "windows" || syscall.OS == "plan9" {
+ return
+ }
+ from, to := "symlinktestfrom", "symlinktestto"
+ Remove(from) // Just in case.
+ file, err := Create(to)
+ if err != nil {
+ t.Fatalf("open %q failed: %v", to, err)
+ }
+ defer Remove(to)
+ if err = file.Close(); err != nil {
+ t.Errorf("close %q failed: %v", to, err)
+ }
+ err = Symlink(to, from)
+ if err != nil {
+ t.Fatalf("symlink %q, %q failed: %v", to, from, err)
+ }
+ defer Remove(from)
+ tostat, err := Stat(to)
+ if err != nil {
+ t.Fatalf("stat %q failed: %v", to, err)
+ }
+ if tostat.FollowedSymlink {
+ t.Fatalf("stat %q claims to have followed a symlink", to)
+ }
+ fromstat, err := Stat(from)
+ if err != nil {
+ t.Fatalf("stat %q failed: %v", from, err)
+ }
+ if tostat.Dev != fromstat.Dev || tostat.Ino != fromstat.Ino {
+ t.Errorf("symlink %q, %q did not create symlink", to, from)
+ }
+ fromstat, err = Lstat(from)
+ if err != nil {
+ t.Fatalf("lstat %q failed: %v", from, err)
+ }
+ if !fromstat.IsSymlink() {
+ t.Fatalf("symlink %q, %q did not create symlink", to, from)
+ }
+ fromstat, err = Stat(from)
+ if err != nil {
+ t.Fatalf("stat %q failed: %v", from, err)
+ }
+ if !fromstat.FollowedSymlink {
+ t.Fatalf("stat %q did not follow symlink", from)
+ }
+ 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) {
+ // Symlinks are not supported under windows or Plan 9.
+ if syscall.OS == "windows" || syscall.OS == "plan9" {
+ return
+ }
+ 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)
+ }
+ attr := &ProcAttr{Dir: dir, Files: []*File{nil, w, Stderr}}
+ p, err := StartProcess(cmd, args, attr)
+ if err != nil {
+ t.Fatalf("StartProcess: %v", err)
+ }
+ defer p.Release()
+ w.Close()
+
+ var b bytes.Buffer
+ io.Copy(&b, r)
+ output := b.String()
+ // Accept /usr prefix because Solaris /bin is symlinked to /usr/bin.
+ if output != expect && output != "/usr"+expect {
+ t.Errorf("exec %q returned %q wanted %q",
+ strings.Join(append([]string{cmd}, args...), " "), output, expect)
+ }
+ p.Wait(0)
+}
+
+func TestStartProcess(t *testing.T) {
+ var dir, cmd, le string
+ var args []string
+ if syscall.OS == "windows" {
+ le = "\r\n"
+ cmd = Getenv("COMSPEC")
+ dir = Getenv("SystemRoot")
+ args = []string{"/c", "cd"}
+ } else {
+ le = "\n"
+ 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+le)
+ // Test relative executable path.
+ exec(t, cmddir, cmdbase, args, filepath.Clean(cmddir)+le)
+}
+
+func checkMode(t *testing.T, path string, mode uint32) {
+ 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 syscall.OS == "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 checkUidGid(t *testing.T, path string, uid, gid int) {
+ dir, err := Stat(path)
+ if err != nil {
+ t.Fatalf("Stat %q (looking for uid/gid %d/%d): %s", path, uid, gid, err)
+ }
+ if dir.Uid != uid {
+ t.Errorf("Stat %q: uid %d want %d", path, dir.Uid, uid)
+ }
+ if dir.Gid != gid {
+ t.Errorf("Stat %q: gid %d want %d", path, dir.Gid, gid)
+ }
+}
+
+func TestChown(t *testing.T) {
+ // Chown is not supported under windows or Plan 9.
+ // Plan9 provides a native ChownPlan9 version instead.
+ if syscall.OS == "windows" || syscall.OS == "plan9" {
+ return
+ }
+ // Use TempDir() to make sure we're on a local file system,
+ // so that the group ids returned by Getgroups will be allowed
+ // on the file. On NFS, the Getgroups groups are
+ // basically useless.
+ f := newFile("TestChown", t)
+ defer Remove(f.Name())
+ defer f.Close()
+ dir, err := f.Stat()
+ if err != nil {
+ t.Fatalf("stat %s: %s", f.Name(), err)
+ }
+
+ // Can't change uid unless root, but can try
+ // changing the group id. First try our current group.
+ gid := Getgid()
+ t.Log("gid:", gid)
+ if err = Chown(f.Name(), -1, gid); err != nil {
+ t.Fatalf("chown %s -1 %d: %s", f.Name(), gid, err)
+ }
+ checkUidGid(t, f.Name(), dir.Uid, gid)
+
+ // Then try all the auxiliary groups.
+ groups, err := Getgroups()
+ if err != nil {
+ t.Fatalf("getgroups: %s", err)
+ }
+ t.Log("groups: ", groups)
+ for _, g := range groups {
+ if err = Chown(f.Name(), -1, g); err != nil {
+ t.Fatalf("chown %s -1 %d: %s", f.Name(), g, err)
+ }
+ checkUidGid(t, f.Name(), dir.Uid, g)
+
+ // change back to gid to test fd.Chown
+ if err = f.Chown(-1, gid); err != nil {
+ t.Fatalf("fchown %s -1 %d: %s", f.Name(), gid, err)
+ }
+ checkUidGid(t, f.Name(), dir.Uid, gid)
+ }
+}
+
+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)
+ f.Write([]byte("surprise!"))
+ 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)
+ f.Write([]byte("surprise!"))
+ 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()
+
+ preStat, err := Stat(f.Name())
+ if err != nil {
+ t.Fatalf("Stat %s: %s", f.Name(), err)
+ }
+
+ // Move access and modification time back a second
+ const OneSecond = 1e9 // in nanoseconds
+ err = Chtimes(f.Name(), preStat.Atime_ns-OneSecond, preStat.Mtime_ns-OneSecond)
+ if err != nil {
+ t.Fatalf("Chtimes %s: %s", f.Name(), err)
+ }
+
+ postStat, err := Stat(f.Name())
+ if err != nil {
+ t.Fatalf("second Stat %s: %s", f.Name(), err)
+ }
+
+ /* Plan 9:
+ 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.
+ */
+ if postStat.Atime_ns >= preStat.Atime_ns && syscall.OS != "plan9" {
+ t.Errorf("Atime_ns didn't go backwards; was=%d, after=%d",
+ preStat.Atime_ns,
+ postStat.Atime_ns)
+ }
+
+ if postStat.Mtime_ns >= preStat.Mtime_ns {
+ t.Errorf("Mtime_ns didn't go backwards; was=%d, after=%d",
+ preStat.Mtime_ns,
+ postStat.Mtime_ns)
+ }
+}
+
+func TestChdirAndGetwd(t *testing.T) {
+ // TODO(brainman): file.Chdir() is not implemented on windows.
+ if syscall.OS == "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 syscall.OS == "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 TestTime(t *testing.T) {
+ // Just want to check that Time() is getting something.
+ // A common failure mode on Darwin is to get 0, 0,
+ // because it returns the time in registers instead of
+ // filling in the structure passed to the system call.
+ // Too bad the compiler doesn't know that
+ // 365.24*86400 is an integer.
+ sec, nsec, err := Time()
+ if sec < (2009-1970)*36524*864 {
+ t.Errorf("Time() = %d, %d, %s; not plausible", sec, nsec, err)
+ }
+}
+
+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.Error == 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,
+ ENOENT,
+ },
+ {
+ sfdir,
+ O_WRONLY,
+ EISDIR,
+ },
+ {
+ sfdir + "/" + sfname + "/no-such-file",
+ O_WRONLY,
+ 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 *os.PathError", tt.path, tt.mode, err)
+ }
+ if perr.Error != tt.error {
+ if syscall.OS == "plan9" {
+ syscallErrStr := perr.Error.String()
+ expectedErrStr := strings.Replace(tt.error.String(), "file ", "", 1)
+ if !strings.HasSuffix(syscallErrStr, expectedErrStr) {
+ t.Errorf("Open(%q, %d) = _, %q; want suffix %q", tt.path, tt.mode, syscallErrStr, expectedErrStr)
+ }
+ } else {
+ t.Errorf("Open(%q, %d) = _, %q; want %q", tt.path, tt.mode, perr.Error.String(), tt.error.String())
+ }
+ }
+ }
+}
+
+func run(t *testing.T, cmd []string) string {
+ // Run /bin/hostname and collect output.
+ r, w, err := Pipe()
+ if err != nil {
+ t.Fatal(err)
+ }
+ p, err := StartProcess("/bin/hostname", []string{"hostname"}, &ProcAttr{Files: []*File{nil, w, Stderr}})
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer p.Release()
+ w.Close()
+
+ var b bytes.Buffer
+ io.Copy(&b, r)
+ _, err = p.Wait(0)
+ 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.
+ if syscall.OS == "windows" || syscall.OS == "plan9" {
+ return
+ }
+ // 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, %r", 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 dir, in _test so it will get
+ // cleaned up by make if not by us.
+ path := "_test/_TestStatDirWithSlash_"
+ err := MkdirAll(path, 0777)
+ if err != nil {
+ t.Fatalf("MkdirAll %q: %s", path, err)
+ }
+ defer RemoveAll(path)
+
+ // Stat of path should succeed.
+ _, err = Stat(path)
+ if err != nil {
+ t.Fatal("stat failed:", err)
+ }
+
+ // Stat of path+"/" should succeed too.
+ _, err = Stat(path + "/")
+ if err != nil {
+ t.Fatal("stat failed:", err)
+ }
+}
+
+func TestNilWaitmsgString(t *testing.T) {
+ var w *Waitmsg
+ s := w.String()
+ if s != "<nil>" {
+ t.Errorf("(*Waitmsg)(nil).String() = %q, want %q", s, "<nil>")
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-25 15:21:40 +0000