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// Copyright (c) 2014-2015 The Notify Authors. All rights reserved.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
//go:build !windows
// +build !windows
package notify
import (
"os"
"path/filepath"
"testing"
)
func tmpfile(s string) (string, error) {
f, err := os.CreateTemp(filepath.Split(s))
if err != nil {
return "", err
}
if err = nonil(f.Sync(), f.Close()); err != nil {
return "", err
}
return f.Name(), nil
}
func symlink(src, dst string) (string, error) {
name, err := tmpfile(dst)
if err != nil {
return "", err
}
if err = nonil(os.Remove(name), os.Symlink(src, name)); err != nil {
return "", err
}
return name, nil
}
func removeall(s ...string) {
for _, s := range s {
os.Remove(s)
}
}
func TestCanonical(t *testing.T) {
wd, err := os.Getwd()
if err != nil {
t.Fatalf("os.Getwd()=%v", err)
}
wdsym, err := symlink(wd, "")
if err != nil {
t.Fatalf(`symlink(%q, "")=%v`, wd, err)
}
td := filepath.Join(wd, "testdata")
tdsym, err := symlink(td, td)
if err != nil {
t.Errorf("symlink(%q, %q)=%v", td, td, nonil(err, os.Remove(wdsym)))
}
defer removeall(wdsym, tdsym)
vfstxt := filepath.Join(td, "vfs.txt")
cases := [...]caseCanonical{
{wdsym, wd},
{tdsym, td},
{filepath.Join(wdsym, "notify.go"), filepath.Join(wd, "notify.go")},
{filepath.Join(tdsym, "vfs.txt"), vfstxt},
{filepath.Join(wdsym, filepath.Base(tdsym), "vfs.txt"), vfstxt},
}
testCanonical(t, cases[:])
}
func TestCanonicalCircular(t *testing.T) {
tmp1, err := tmpfile("circular")
if err != nil {
t.Fatal(err)
}
tmp2, err := tmpfile("circular")
if err != nil {
t.Fatal(nonil(err, os.Remove(tmp1)))
}
defer removeall(tmp1, tmp2)
// Symlink tmp1 -> tmp2.
if err = nonil(os.Remove(tmp1), os.Symlink(tmp2, tmp1)); err != nil {
t.Fatal(err)
}
// Symlnik tmp2 -> tmp1.
if err = nonil(os.Remove(tmp2), os.Symlink(tmp1, tmp2)); err != nil {
t.Fatal(err)
}
if _, err = canonical(tmp1); err == nil {
t.Fatalf("want canonical(%q)!=nil", tmp1)
}
if _, ok := err.(*os.PathError); !ok {
t.Fatalf("want canonical(%q)=os.PathError; got %T", tmp1, err)
}
}
// issue #83
func TestCanonical_RelativeSymlink(t *testing.T) {
dir, err := os.MkdirTemp(wd, "")
if err != nil {
t.Fatalf("TempDir()=%v", err)
}
var (
path = filepath.Join(dir, filepath.FromSlash("a/b/c/d/e/f"))
realpath = filepath.Join(dir, filepath.FromSlash("a/b/x/y/z/d/e/f"))
rel = filepath.FromSlash("x/y/z/../z/../z")
chdir = filepath.Join(dir, filepath.FromSlash("a/b"))
)
defer os.RemoveAll(dir)
if err = os.MkdirAll(realpath, 0755); err != nil {
t.Fatalf("MkdirAll()=%v", err)
}
if err := os.Chdir(chdir); err != nil {
t.Fatalf("Chdir()=%v", err)
}
if err := nonil(os.Symlink(rel, "c"), os.Chdir(wd)); err != nil {
t.Fatalf("Symlink()=%v", err)
}
got, err := canonical(path)
if err != nil {
t.Fatalf("canonical(%s)=%v", path, err)
}
if got != realpath {
t.Fatalf("want canonical()=%s; got %s", realpath, got)
}
}
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