libgo/go/os/exec/lp_unix_test.go

   1 // Copyright 2013 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 // +build darwin dragonfly freebsd linux netbsd openbsd solaris
   6
   7 package exec
   8
   9 import (
  10         "io/ioutil"
  11         "os"
  12         "testing"
  13 )
  14
  15 func TestLookPathUnixEmptyPath(t *testing.T) {
  16         tmp, err := ioutil.TempDir("", "TestLookPathUnixEmptyPath")
  17         if err != nil {
  18                 t.Fatal("TempDir failed: ", err)
  19         }
  20         defer os.RemoveAll(tmp)
  21         wd, err := os.Getwd()
  22         if err != nil {
  23                 t.Fatal("Getwd failed: ", err)
  24         }
  25         err = os.Chdir(tmp)
  26         if err != nil {
  27                 t.Fatal("Chdir failed: ", err)
  28         }
  29         defer os.Chdir(wd)
  30
  31         f, err := os.OpenFile("exec_me", os.O_CREATE|os.O_EXCL, 0700)
  32         if err != nil {
  33                 t.Fatal("OpenFile failed: ", err)
  34         }
  35         err = f.Close()
  36         if err != nil {
  37                 t.Fatal("Close failed: ", err)
  38         }
  39
  40         pathenv := os.Getenv("PATH")
  41         defer os.Setenv("PATH", pathenv)
  42
  43         err = os.Setenv("PATH", "")
  44         if err != nil {
  45                 t.Fatal("Setenv failed: ", err)
  46         }
  47
  48         path, err := LookPath("exec_me")
  49         if err == nil {
  50                 t.Fatal("LookPath found exec_me in empty $PATH")
  51         }
  52         if path != "" {
  53                 t.Fatalf("LookPath path == %q when err != nil", path)
  54         }
  55 }