go lp_unix_test 源码
golang lp_unix_test 代码
文件路径：/src/os/exec/lp_unix_test.go
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build unix
package exec
import (
"os"
"testing"
)
func TestLookPathUnixEmptyPath(t *testing.T) {
tmp, err := os.MkdirTemp("", "TestLookPathUnixEmptyPath")
if err != nil {
t.Fatal("TempDir failed: ", err)
}
defer os.RemoveAll(tmp)
wd, err := os.Getwd()
if err != nil {
t.Fatal("Getwd failed: ", err)
}
err = os.Chdir(tmp)
if err != nil {
t.Fatal("Chdir failed: ", err)
}
defer os.Chdir(wd)
f, err := os.OpenFile("exec_me", os.O_CREATE|os.O_EXCL, 0700)
if err != nil {
t.Fatal("OpenFile failed: ", err)
}
err = f.Close()
if err != nil {
t.Fatal("Close failed: ", err)
}
t.Setenv("PATH", "")
path, err := LookPath("exec_me")
if err == nil {
t.Fatal("LookPath found exec_me in empty $PATH")
}
if path != "" {
t.Fatalf("LookPath path == %q when err != nil", path)
}
}
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