func TestSymlink(t *testing.T) {
testenv.MustHaveSymlink(t)
defer chtmpdir(t)()
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 := Lstat(to)
if err != nil {
t.Fatalf("stat %q failed: %v", to, err)
}
if tostat.Mode()&ModeSymlink != 0 {
t.Fatalf("stat %q claims to have found a symlink", to)
}
fromstat, err := Stat(from)
if err != nil {
t.Fatalf("stat %q failed: %v", from, err)
}
if !SameFile(tostat, fromstat) {
t.Errorf("symlink %q, %q did not create symlink", to, from)
}
fromstat, err = Lstat(from)
if err != nil {
t.Fatalf("lstat %q failed: %v", from, err)
}
if fromstat.Mode()&ModeSymlink == 0 {
t.Fatalf("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.Mode()&ModeSymlink != 0 {
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 TestMkdirAllWithSymlink(t *testing.T) {
testenv.MustHaveSymlink(t)
tmpDir, err := ioutil.TempDir("", "TestMkdirAllWithSymlink-")
if err != nil {
t.Fatal(err)
}
defer RemoveAll(tmpDir)
dir := tmpDir + "/dir"
err = Mkdir(dir, 0755)
if err != nil {
t.Fatalf("Mkdir %s: %s", dir, err)
}
link := tmpDir + "/link"
err = Symlink("dir", link)
if err != nil {
t.Fatalf("Symlink %s: %s", link, err)
}
path := link + "/foo"
err = MkdirAll(path, 0755)
if err != nil {
t.Errorf("MkdirAll %q: %s", path, err)
}
}
func TestEvalSymlinksIsNotExist(t *testing.T) {
testenv.MustHaveSymlink(t)
defer chtmpdir(t)()
_, err := filepath.EvalSymlinks("notexist")
if !os.IsNotExist(err) {
t.Errorf("expected the file is not found, got %v\n", err)
}
err = os.Symlink("notexist", "link")
if err != nil {
t.Fatal(err)
}
defer os.Remove("link")
_, err = filepath.EvalSymlinks("link")
if !os.IsNotExist(err) {
t.Errorf("expected the file is not found, got %v\n", err)
}
}
func TestStatSymlinkLoop(t *testing.T) {
testenv.MustHaveSymlink(t)
defer chtmpdir(t)()
err := os.Symlink("x", "y")
if err != nil {
t.Fatal(err)
}
defer os.Remove("y")
err = os.Symlink("y", "x")
if err != nil {
t.Fatal(err)
}
defer os.Remove("x")
_, err = os.Stat("x")
if perr, ok := err.(*os.PathError); !ok || perr.Err != syscall.ELOOP {
t.Errorf("expected *PathError with ELOOP, got %T: %v\n", err, err)
}
}
func TestLongSymlink(t *testing.T) {
testenv.MustHaveSymlink(t)
defer chtmpdir(t)()
s := "0123456789abcdef"
// Long, but not too long: a common limit is 255.
s = s + s + s + s + s + s + s + s + s + s + s + s + s + s + s
from := "longsymlinktestfrom"
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 TestGlobSymlink(t *testing.T) {
testenv.MustHaveSymlink(t)
tmpDir, err := ioutil.TempDir("", "globsymlink")
if err != nil {
t.Fatal("creating temp dir:", err)
}
defer os.RemoveAll(tmpDir)
for _, tt := range globSymlinkTests {
path := Join(tmpDir, tt.path)
dest := Join(tmpDir, tt.dest)
f, err := os.Create(path)
if err != nil {
t.Fatal(err)
}
if err := f.Close(); err != nil {
t.Fatal(err)
}
err = os.Symlink(path, dest)
if err != nil {
t.Fatal(err)
}
if tt.brokenLink {
// Break the symlink.
os.Remove(path)
}
matches, err := Glob(dest)
if err != nil {
t.Errorf("GlobSymlink error for %q: %s", dest, err)
}
if !contains(matches, dest) {
t.Errorf("Glob(%#q) = %#v want %v", dest, matches, dest)
}
}
}
func TestNetworkSymbolicLink(t *testing.T) {
testenv.MustHaveSymlink(t)
dir, err := ioutil.TempDir("", "TestNetworkSymbolicLink")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
oldwd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
err = os.Chdir(dir)
if err != nil {
t.Fatal(err)
}
defer os.Chdir(oldwd)
shareName := "GoSymbolicLinkTestShare" // hope no conflictions
sharePath := filepath.Join(dir, shareName)
testDir := "TestDir"
err = os.MkdirAll(filepath.Join(sharePath, testDir), 0777)
if err != nil {
t.Fatal(err)
}
wShareName, err := syscall.UTF16PtrFromString(shareName)
if err != nil {
t.Fatal(err)
}
wSharePath, err := syscall.UTF16PtrFromString(sharePath)
if err != nil {
t.Fatal(err)
}
p := windows.SHARE_INFO_2{
Netname: wShareName,
Type: windows.STYPE_DISKTREE,
Remark: nil,
Permissions: 0,
MaxUses: 1,
CurrentUses: 0,
Path: wSharePath,
Passwd: nil,
}
err = windows.NetShareAdd(nil, 2, (*byte)(unsafe.Pointer(&p)), nil)
if err != nil {
if err == syscall.ERROR_ACCESS_DENIED {
t.Skip("you don't have enough privileges to add network share")
}
t.Fatal(err)
}
defer func() {
err := windows.NetShareDel(nil, wShareName, 0)
if err != nil {
t.Fatal(err)
}
}()
UNCPath := `\\localhost\` + shareName + `\`
fi1, err := os.Stat(sharePath)
if err != nil {
t.Fatal(err)
}
fi2, err := os.Stat(UNCPath)
if err != nil {
t.Fatal(err)
}
if !os.SameFile(fi1, fi2) {
t.Fatalf("%q and %q should be the same directory, but not", sharePath, UNCPath)
}
target := filepath.Join(UNCPath, testDir)
link := "link"
err = os.Symlink(target, link)
if err != nil {
t.Fatal(err)
}
defer os.Remove(link)
got, err := os.Readlink(link)
if err != nil {
t.Fatal(err)
}
if got != target {
t.Errorf(`os.Readlink("%s"): got %v, want %v`, link, got, target)
}
}
func TestIssue13582(t *testing.T) {
testenv.MustHaveSymlink(t)
tmpDir, err := ioutil.TempDir("", "issue13582")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpDir)
dir := filepath.Join(tmpDir, "dir")
err = os.Mkdir(dir, 0755)
if err != nil {
t.Fatal(err)
}
linkToDir := filepath.Join(tmpDir, "link_to_dir")
err = os.Symlink(dir, linkToDir)
if err != nil {
t.Fatal(err)
}
file := filepath.Join(linkToDir, "file")
err = ioutil.WriteFile(file, nil, 0644)
if err != nil {
t.Fatal(err)
}
link1 := filepath.Join(linkToDir, "link1")
err = os.Symlink(file, link1)
if err != nil {
t.Fatal(err)
}
link2 := filepath.Join(linkToDir, "link2")
err = os.Symlink(link1, link2)
if err != nil {
t.Fatal(err)
}
// /tmp may itself be a symlink!
realTmpDir, err := filepath.EvalSymlinks(tmpDir)
if err != nil {
t.Fatal(err)
}
realDir := filepath.Join(realTmpDir, "dir")
realFile := filepath.Join(realDir, "file")
tests := []struct {
path, want string
}{
{dir, realDir},
{linkToDir, realDir},
{file, realFile},
{link1, realFile},
{link2, realFile},
}
for i, test := range tests {
have, err := filepath.EvalSymlinks(test.path)
if err != nil {
t.Fatal(err)
}
if have != test.want {
t.Errorf("test#%d: EvalSymlinks(%q) returns %q, want %q", i, test.path, have, test.want)
}
}
}
func TestEvalSymlinks(t *testing.T) {
testenv.MustHaveSymlink(t)
tmpDir, err := ioutil.TempDir("", "evalsymlink")
if err != nil {
t.Fatal("creating temp dir:", err)
}
defer os.RemoveAll(tmpDir)
// /tmp may itself be a symlink! Avoid the confusion, although
// it means trusting the thing we're testing.
tmpDir, err = filepath.EvalSymlinks(tmpDir)
if err != nil {
t.Fatal("eval symlink for tmp dir:", err)
}
tests := EvalSymlinksTests
testdirs := EvalSymlinksTestDirs
if runtime.GOOS == "windows" {
if len(tmpDir) < 3 {
t.Fatalf("tmpDir path %q is too short", tmpDir)
}
if tmpDir[1] != ':' {
t.Fatalf("tmpDir path %q must have drive letter in it", tmpDir)
}
newtest := EvalSymlinksTest{"test/linkabswin", tmpDir[:3]}
tests = append(tests, newtest)
testdirs = append(testdirs, newtest)
}
// Create the symlink farm using relative paths.
for _, d := range testdirs {
var err error
path := simpleJoin(tmpDir, d.path)
if d.dest == "" {
err = os.Mkdir(path, 0755)
} else {
err = os.Symlink(d.dest, path)
}
if err != nil {
t.Fatal(err)
}
}
wd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
// Evaluate the symlink farm.
for _, d := range tests {
path := simpleJoin(tmpDir, d.path)
dest := simpleJoin(tmpDir, d.dest)
if filepath.IsAbs(d.dest) || os.IsPathSeparator(d.dest[0]) {
dest = d.dest
}
if p, err := filepath.EvalSymlinks(path); err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", d.path, err)
} else if filepath.Clean(p) != filepath.Clean(dest) {
t.Errorf("EvalSymlinks(%q)=%q, want %q", path, p, dest)
}
// test EvalSymlinks(".")
func() {
defer func() {
err := os.Chdir(wd)
if err != nil {
t.Fatal(err)
}
}()
err := os.Chdir(path)
if err != nil {
t.Error(err)
return
}
p, err := filepath.EvalSymlinks(".")
if err != nil {
t.Errorf(`EvalSymlinks(".") in %q directory error: %v`, d.path, err)
return
}
if p == "." {
return
}
want := filepath.Clean(findEvalSymlinksTestDirsDest(t, testdirs, d.path))
if p == want {
return
}
t.Errorf(`EvalSymlinks(".") in %q directory returns %q, want "." or %q`, d.path, p, want)
}()
// test EvalSymlinks("C:.") on Windows
if runtime.GOOS == "windows" {
func() {
defer func() {
err := os.Chdir(wd)
if err != nil {
t.Fatal(err)
}
}()
err := os.Chdir(path)
if err != nil {
t.Error(err)
return
}
volDot := filepath.VolumeName(tmpDir) + "."
p, err := filepath.EvalSymlinks(volDot)
if err != nil {
t.Errorf(`EvalSymlinks("%s") in %q directory error: %v`, volDot, d.path, err)
return
}
if p == volDot {
return
}
want := filepath.Clean(findEvalSymlinksTestDirsDest(t, testdirs, d.path))
if p == want {
return
}
t.Errorf(`EvalSymlinks("%s") in %q directory returns %q, want %q or %q`, volDot, d.path, p, volDot, want)
}()
}
// test EvalSymlinks(".."+path)
func() {
defer func() {
err := os.Chdir(wd)
if err != nil {
t.Fatal(err)
}
}()
err := os.Chdir(simpleJoin(tmpDir, "test"))
if err != nil {
t.Error(err)
return
}
path := simpleJoin("..", d.path)
dest := simpleJoin("..", d.dest)
if filepath.IsAbs(d.dest) || os.IsPathSeparator(d.dest[0]) {
dest = d.dest
}
if p, err := filepath.EvalSymlinks(path); err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", d.path, err)
} else if filepath.Clean(p) != filepath.Clean(dest) {
t.Errorf("EvalSymlinks(%q)=%q, want %q", path, p, dest)
}
}()
// test EvalSymlinks where parameter is relative path
func() {
defer func() {
err := os.Chdir(wd)
if err != nil {
t.Fatal(err)
}
}()
err := os.Chdir(tmpDir)
if err != nil {
t.Error(err)
return
}
if p, err := filepath.EvalSymlinks(d.path); err != nil {
t.Errorf("EvalSymlinks(%q) error: %v", d.path, err)
} else if filepath.Clean(p) != filepath.Clean(d.dest) {
t.Errorf("EvalSymlinks(%q)=%q, want %q", d.path, p, d.dest)
}
}()
}
}