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
5package os_test
6
7import (
8	"internal/testenv"
9	. "os"
10	"path/filepath"
11	"runtime"
12	"syscall"
13	"testing"
14)
15
16var isReadonlyError = func(error) bool { return false }
17
18func TestMkdirAll(t *testing.T) {
19	tmpDir := TempDir()
20	path := tmpDir + "/_TestMkdirAll_/dir/./dir2"
21	err := MkdirAll(path, 0777)
22	if err != nil {
23		t.Fatalf("MkdirAll %q: %s", path, err)
24	}
25	defer RemoveAll(tmpDir + "/_TestMkdirAll_")
26
27	// Already exists, should succeed.
28	err = MkdirAll(path, 0777)
29	if err != nil {
30		t.Fatalf("MkdirAll %q (second time): %s", path, err)
31	}
32
33	// Make file.
34	fpath := path + "/file"
35	f, err := Create(fpath)
36	if err != nil {
37		t.Fatalf("create %q: %s", fpath, err)
38	}
39	defer f.Close()
40
41	// Can't make directory named after file.
42	err = MkdirAll(fpath, 0777)
43	if err == nil {
44		t.Fatalf("MkdirAll %q: no error", fpath)
45	}
46	perr, ok := err.(*PathError)
47	if !ok {
48		t.Fatalf("MkdirAll %q returned %T, not *PathError", fpath, err)
49	}
50	if filepath.Clean(perr.Path) != filepath.Clean(fpath) {
51		t.Fatalf("MkdirAll %q returned wrong error path: %q not %q", fpath, filepath.Clean(perr.Path), filepath.Clean(fpath))
52	}
53
54	// Can't make subdirectory of file.
55	ffpath := fpath + "/subdir"
56	err = MkdirAll(ffpath, 0777)
57	if err == nil {
58		t.Fatalf("MkdirAll %q: no error", ffpath)
59	}
60	perr, ok = err.(*PathError)
61	if !ok {
62		t.Fatalf("MkdirAll %q returned %T, not *PathError", ffpath, err)
63	}
64	if filepath.Clean(perr.Path) != filepath.Clean(fpath) {
65		t.Fatalf("MkdirAll %q returned wrong error path: %q not %q", ffpath, filepath.Clean(perr.Path), filepath.Clean(fpath))
66	}
67
68	if runtime.GOOS == "windows" {
69		path := tmpDir + `\_TestMkdirAll_\dir\.\dir2\`
70		err := MkdirAll(path, 0777)
71		if err != nil {
72			t.Fatalf("MkdirAll %q: %s", path, err)
73		}
74	}
75}
76
77func TestMkdirAllWithSymlink(t *testing.T) {
78	testenv.MustHaveSymlink(t)
79
80	tmpDir := t.TempDir()
81	dir := tmpDir + "/dir"
82	if err := Mkdir(dir, 0755); err != nil {
83		t.Fatalf("Mkdir %s: %s", dir, err)
84	}
85
86	link := tmpDir + "/link"
87	if err := Symlink("dir", link); err != nil {
88		t.Fatalf("Symlink %s: %s", link, err)
89	}
90
91	path := link + "/foo"
92	if err := MkdirAll(path, 0755); err != nil {
93		t.Errorf("MkdirAll %q: %s", path, err)
94	}
95}
96
97func TestMkdirAllAtSlash(t *testing.T) {
98	switch runtime.GOOS {
99	case "android", "plan9", "windows":
100		t.Skipf("skipping on %s", runtime.GOOS)
101	case "darwin", "ios":
102		switch runtime.GOARCH {
103		case "arm64":
104			t.Skipf("skipping on darwin/arm64, mkdir returns EPERM")
105		}
106	}
107	RemoveAll("/_go_os_test")
108	const dir = "/_go_os_test/dir"
109	err := MkdirAll(dir, 0777)
110	if err != nil {
111		pathErr, ok := err.(*PathError)
112		// common for users not to be able to write to /
113		if ok && (pathErr.Err == syscall.EACCES || isReadonlyError(pathErr.Err)) {
114			t.Skipf("could not create %v: %v", dir, err)
115		}
116		t.Fatalf(`MkdirAll "/_go_os_test/dir": %v, %s`, err, pathErr.Err)
117	}
118	RemoveAll("/_go_os_test")
119}
120