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