libgo/go/os/path_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package os_test
   6
   7 import (
   8         "io/ioutil"
   9         . "os"
  10         "path/filepath"
  11         "runtime"
  12         "syscall"
  13         "testing"
  14 )
  15
  16 func TestMkdirAll(t *testing.T) {
  17         tmpDir := TempDir()
  18         path := tmpDir + "/_TestMkdirAll_/dir/./dir2"
  19         err := MkdirAll(path, 0777)
  20         if err != nil {
  21                 t.Fatalf("MkdirAll %q: %s", path, err)
  22         }
  23         defer RemoveAll(tmpDir + "/_TestMkdirAll_")
  24
  25         // Already exists, should succeed.
  26         err = MkdirAll(path, 0777)
  27         if err != nil {
  28                 t.Fatalf("MkdirAll %q (second time): %s", path, err)
  29         }
  30
  31         // Make file.
  32         fpath := path + "/file"
  33         f, err := Create(fpath)
  34         if err != nil {
  35                 t.Fatalf("create %q: %s", fpath, err)
  36         }
  37         defer f.Close()
  38
  39         // Can't make directory named after file.
  40         err = MkdirAll(fpath, 0777)
  41         if err == nil {
  42                 t.Fatalf("MkdirAll %q: no error", fpath)
  43         }
  44         perr, ok := err.(*PathError)
  45         if !ok {
  46                 t.Fatalf("MkdirAll %q returned %T, not *PathError", fpath, err)
  47         }
  48         if filepath.Clean(perr.Path) != filepath.Clean(fpath) {
  49                 t.Fatalf("MkdirAll %q returned wrong error path: %q not %q", fpath, filepath.Clean(perr.Path), filepath.Clean(fpath))
  50         }
  51
  52         // Can't make subdirectory of file.
  53         ffpath := fpath + "/subdir"
  54         err = MkdirAll(ffpath, 0777)
  55         if err == nil {
  56                 t.Fatalf("MkdirAll %q: no error", ffpath)
  57         }
  58         perr, ok = err.(*PathError)
  59         if !ok {
  60                 t.Fatalf("MkdirAll %q returned %T, not *PathError", ffpath, err)
  61         }
  62         if filepath.Clean(perr.Path) != filepath.Clean(fpath) {
  63                 t.Fatalf("MkdirAll %q returned wrong error path: %q not %q", ffpath, filepath.Clean(perr.Path), filepath.Clean(fpath))
  64         }
  65
  66         if runtime.GOOS == "windows" {
  67                 path := tmpDir + `\_TestMkdirAll_\dir\.\dir2\`
  68                 err := MkdirAll(path, 0777)
  69                 if err != nil {
  70                         t.Fatalf("MkdirAll %q: %s", path, err)
  71                 }
  72         }
  73 }
  74
  75 func TestRemoveAll(t *testing.T) {
  76         tmpDir := TempDir()
  77         // Work directory.
  78         path := tmpDir + "/_TestRemoveAll_"
  79         fpath := path + "/file"
  80         dpath := path + "/dir"
  81
  82         // Make directory with 1 file and remove.
  83         if err := MkdirAll(path, 0777); err != nil {
  84                 t.Fatalf("MkdirAll %q: %s", path, err)
  85         }
  86         fd, err := Create(fpath)
  87         if err != nil {
  88                 t.Fatalf("create %q: %s", fpath, err)
  89         }
  90         fd.Close()
  91         if err = RemoveAll(path); err != nil {
  92                 t.Fatalf("RemoveAll %q (first): %s", path, err)
  93         }
  94         if _, err = Lstat(path); err == nil {
  95                 t.Fatalf("Lstat %q succeeded after RemoveAll (first)", path)
  96         }
  97
  98         // Make directory with file and subdirectory and remove.
  99         if err = MkdirAll(dpath, 0777); err != nil {
 100                 t.Fatalf("MkdirAll %q: %s", dpath, err)
 101         }
 102         fd, err = Create(fpath)
 103         if err != nil {
 104                 t.Fatalf("create %q: %s", fpath, err)
 105         }
 106         fd.Close()
 107         fd, err = Create(dpath + "/file")
 108         if err != nil {
 109                 t.Fatalf("create %q: %s", fpath, err)
 110         }
 111         fd.Close()
 112         if err = RemoveAll(path); err != nil {
 113                 t.Fatalf("RemoveAll %q (second): %s", path, err)
 114         }
 115         if _, err := Lstat(path); err == nil {
 116                 t.Fatalf("Lstat %q succeeded after RemoveAll (second)", path)
 117         }
 118
 119         // Determine if we should run the following test.
 120         testit := true
 121         if runtime.GOOS == "windows" {
 122                 // Chmod is not supported under windows.
 123                 testit = false
 124         } else {
 125                 // Test fails as root.
 126                 testit = Getuid() != 0
 127         }
 128         if testit {
 129                 // Make directory with file and subdirectory and trigger error.
 130                 if err = MkdirAll(dpath, 0777); err != nil {
 131                         t.Fatalf("MkdirAll %q: %s", dpath, err)
 132                 }
 133
 134                 for _, s := range []string{fpath, dpath + "/file1", path + "/zzz"} {
 135                         fd, err = Create(s)
 136                         if err != nil {
 137                                 t.Fatalf("create %q: %s", s, err)
 138                         }
 139                         fd.Close()
 140                 }
 141                 if err = Chmod(dpath, 0); err != nil {
 142                         t.Fatalf("Chmod %q 0: %s", dpath, err)
 143                 }
 144
 145                 // No error checking here: either RemoveAll
 146                 // will or won't be able to remove dpath;
 147                 // either way we want to see if it removes fpath
 148                 // and path/zzz.  Reasons why RemoveAll might
 149                 // succeed in removing dpath as well include:
 150                 //      * running as root
 151                 //      * running on a file system without permissions (FAT)
 152                 RemoveAll(path)
 153                 Chmod(dpath, 0777)
 154
 155                 for _, s := range []string{fpath, path + "/zzz"} {
 156                         if _, err = Lstat(s); err == nil {
 157                                 t.Fatalf("Lstat %q succeeded after partial RemoveAll", s)
 158                         }
 159                 }
 160         }
 161         if err = RemoveAll(path); err != nil {
 162                 t.Fatalf("RemoveAll %q after partial RemoveAll: %s", path, err)
 163         }
 164         if _, err = Lstat(path); err == nil {
 165                 t.Fatalf("Lstat %q succeeded after RemoveAll (final)", path)
 166         }
 167 }
 168
 169 func TestMkdirAllWithSymlink(t *testing.T) {
 170         if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
 171                 t.Skip("Skipping test: symlinks don't exist under Windows/Plan 9")
 172         }
 173
 174         tmpDir, err := ioutil.TempDir("", "TestMkdirAllWithSymlink-")
 175         if err != nil {
 176                 t.Fatal(err)
 177         }
 178         defer RemoveAll(tmpDir)
 179
 180         dir := tmpDir + "/dir"
 181         err = Mkdir(dir, 0755)
 182         if err != nil {
 183                 t.Fatalf("Mkdir %s: %s", dir, err)
 184         }
 185
 186         link := tmpDir + "/link"
 187         err = Symlink("dir", link)
 188         if err != nil {
 189                 t.Fatalf("Symlink %s: %s", link, err)
 190         }
 191
 192         path := link + "/foo"
 193         err = MkdirAll(path, 0755)
 194         if err != nil {
 195                 t.Errorf("MkdirAll %q: %s", path, err)
 196         }
 197 }
 198
 199 func TestMkdirAllAtSlash(t *testing.T) {
 200         if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
 201                 return
 202         }
 203         RemoveAll("/_go_os_test")
 204         err := MkdirAll("/_go_os_test/dir", 0777)
 205         if err != nil {
 206                 pathErr, ok := err.(*PathError)
 207                 // common for users not to be able to write to /
 208                 if ok && pathErr.Err == syscall.EACCES {
 209                         return
 210                 }
 211                 t.Fatalf(`MkdirAll "/_go_os_test/dir": %v`, err)
 212         }
 213         RemoveAll("/_go_os_test")
 214 }