Source file
src/os/stat_test.go
1
2
3
4
5 package os_test
6
7 import (
8 "internal/testenv"
9 "io/fs"
10 "os"
11 "path/filepath"
12 "runtime"
13 "testing"
14 )
15
16
17 func testStatAndLstat(t *testing.T, path string, isLink bool, statCheck, lstatCheck func(*testing.T, string, fs.FileInfo)) {
18
19 sfi, err := os.Stat(path)
20 if err != nil {
21 t.Error(err)
22 return
23 }
24 statCheck(t, path, sfi)
25
26
27 lsfi, err := os.Lstat(path)
28 if err != nil {
29 t.Error(err)
30 return
31 }
32 lstatCheck(t, path, lsfi)
33
34 if isLink {
35 if os.SameFile(sfi, lsfi) {
36 t.Errorf("stat and lstat of %q should not be the same", path)
37 }
38 } else {
39 if !os.SameFile(sfi, lsfi) {
40 t.Errorf("stat and lstat of %q should be the same", path)
41 }
42 }
43
44
45 f, err := os.Open(path)
46 if err != nil {
47 t.Error(err)
48 return
49 }
50 defer f.Close()
51
52 sfi2, err := f.Stat()
53 if err != nil {
54 t.Error(err)
55 return
56 }
57 statCheck(t, path, sfi2)
58
59 if !os.SameFile(sfi, sfi2) {
60 t.Errorf("stat of open %q file and stat of %q should be the same", path, path)
61 }
62
63 if isLink {
64 if os.SameFile(sfi2, lsfi) {
65 t.Errorf("stat of opened %q file and lstat of %q should not be the same", path, path)
66 }
67 } else {
68 if !os.SameFile(sfi2, lsfi) {
69 t.Errorf("stat of opened %q file and lstat of %q should be the same", path, path)
70 }
71 }
72
73
74 if len(path) > 0 && os.IsPathSeparator(path[len(path)-1]) {
75
76 return
77 }
78 parentdir := filepath.Dir(path)
79 parent, err := os.Open(parentdir)
80 if err != nil {
81 t.Error(err)
82 return
83 }
84 defer parent.Close()
85
86 fis, err := parent.Readdir(-1)
87 if err != nil {
88 t.Error(err)
89 return
90 }
91 var lsfi2 fs.FileInfo
92 base := filepath.Base(path)
93 for _, fi2 := range fis {
94 if fi2.Name() == base {
95 lsfi2 = fi2
96 break
97 }
98 }
99 if lsfi2 == nil {
100 t.Errorf("failed to find %q in its parent", path)
101 return
102 }
103 lstatCheck(t, path, lsfi2)
104
105 if !os.SameFile(lsfi, lsfi2) {
106 t.Errorf("lstat of %q file in %q directory and %q should be the same", lsfi2.Name(), parentdir, path)
107 }
108 }
109
110
111 func testIsDir(t *testing.T, path string, fi fs.FileInfo) {
112 t.Helper()
113 if !fi.IsDir() {
114 t.Errorf("%q should be a directory", path)
115 }
116 if fi.Mode()&fs.ModeSymlink != 0 {
117 t.Errorf("%q should not be a symlink", path)
118 }
119 }
120
121
122 func testIsSymlink(t *testing.T, path string, fi fs.FileInfo) {
123 t.Helper()
124 if fi.IsDir() {
125 t.Errorf("%q should not be a directory", path)
126 }
127 if fi.Mode()&fs.ModeSymlink == 0 {
128 t.Errorf("%q should be a symlink", path)
129 }
130 }
131
132
133 func testIsFile(t *testing.T, path string, fi fs.FileInfo) {
134 t.Helper()
135 if fi.IsDir() {
136 t.Errorf("%q should not be a directory", path)
137 }
138 if fi.Mode()&fs.ModeSymlink != 0 {
139 t.Errorf("%q should not be a symlink", path)
140 }
141 }
142
143 func testDirStats(t *testing.T, path string) {
144 testStatAndLstat(t, path, false, testIsDir, testIsDir)
145 }
146
147 func testFileStats(t *testing.T, path string) {
148 testStatAndLstat(t, path, false, testIsFile, testIsFile)
149 }
150
151 func testSymlinkStats(t *testing.T, path string, isdir bool) {
152 if isdir {
153 testStatAndLstat(t, path, true, testIsDir, testIsSymlink)
154 } else {
155 testStatAndLstat(t, path, true, testIsFile, testIsSymlink)
156 }
157 }
158
159 func testSymlinkSameFile(t *testing.T, path, link string) {
160 pathfi, err := os.Stat(path)
161 if err != nil {
162 t.Error(err)
163 return
164 }
165
166 linkfi, err := os.Stat(link)
167 if err != nil {
168 t.Error(err)
169 return
170 }
171 if !os.SameFile(pathfi, linkfi) {
172 t.Errorf("os.Stat(%q) and os.Stat(%q) are not the same file", path, link)
173 }
174
175 linkfi, err = os.Lstat(link)
176 if err != nil {
177 t.Error(err)
178 return
179 }
180 if os.SameFile(pathfi, linkfi) {
181 t.Errorf("os.Stat(%q) and os.Lstat(%q) are the same file", path, link)
182 }
183 }
184
185 func TestDirAndSymlinkStats(t *testing.T) {
186 testenv.MustHaveSymlink(t)
187
188 tmpdir := t.TempDir()
189 dir := filepath.Join(tmpdir, "dir")
190 if err := os.Mkdir(dir, 0777); err != nil {
191 t.Fatal(err)
192 }
193 testDirStats(t, dir)
194
195 dirlink := filepath.Join(tmpdir, "link")
196 if err := os.Symlink(dir, dirlink); err != nil {
197 t.Fatal(err)
198 }
199 testSymlinkStats(t, dirlink, true)
200 testSymlinkSameFile(t, dir, dirlink)
201
202 linklink := filepath.Join(tmpdir, "linklink")
203 if err := os.Symlink(dirlink, linklink); err != nil {
204 t.Fatal(err)
205 }
206 testSymlinkStats(t, linklink, true)
207 testSymlinkSameFile(t, dir, linklink)
208 }
209
210 func TestFileAndSymlinkStats(t *testing.T) {
211 testenv.MustHaveSymlink(t)
212
213 tmpdir := t.TempDir()
214 file := filepath.Join(tmpdir, "file")
215 if err := os.WriteFile(file, []byte(""), 0644); err != nil {
216 t.Fatal(err)
217 }
218 testFileStats(t, file)
219
220 filelink := filepath.Join(tmpdir, "link")
221 if err := os.Symlink(file, filelink); err != nil {
222 t.Fatal(err)
223 }
224 testSymlinkStats(t, filelink, false)
225 testSymlinkSameFile(t, file, filelink)
226
227 linklink := filepath.Join(tmpdir, "linklink")
228 if err := os.Symlink(filelink, linklink); err != nil {
229 t.Fatal(err)
230 }
231 testSymlinkStats(t, linklink, false)
232 testSymlinkSameFile(t, file, linklink)
233 }
234
235
236 func TestSymlinkWithTrailingSlash(t *testing.T) {
237 testenv.MustHaveSymlink(t)
238
239 tmpdir := t.TempDir()
240 dir := filepath.Join(tmpdir, "dir")
241 if err := os.Mkdir(dir, 0777); err != nil {
242 t.Fatal(err)
243 }
244 dirlink := filepath.Join(tmpdir, "link")
245 if err := os.Symlink(dir, dirlink); err != nil {
246 t.Fatal(err)
247 }
248 dirlinkWithSlash := dirlink + string(os.PathSeparator)
249
250 if runtime.GOOS == "windows" {
251 testSymlinkStats(t, dirlinkWithSlash, true)
252 } else {
253 testDirStats(t, dirlinkWithSlash)
254 }
255
256 fi1, err := os.Stat(dir)
257 if err != nil {
258 t.Error(err)
259 return
260 }
261 fi2, err := os.Stat(dirlinkWithSlash)
262 if err != nil {
263 t.Error(err)
264 return
265 }
266 if !os.SameFile(fi1, fi2) {
267 t.Errorf("os.Stat(%q) and os.Stat(%q) are not the same file", dir, dirlinkWithSlash)
268 }
269 }
270
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