go exec_windows_test 源码
golang exec_windows_test 代码
文件路径：/src/os/exec/exec_windows_test.go
// Copyright 2021 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 windows
package exec_test
import (
"fmt"
"io"
"os"
"os/exec"
"strconv"
"strings"
"syscall"
"testing"
)
func init() {
registerHelperCommand("pipehandle", cmdPipeHandle)
}
func cmdPipeHandle(args ...string) {
handle, _ := strconv.ParseUint(args[0], 16, 64)
pipe := os.NewFile(uintptr(handle), "")
_, err := fmt.Fprint(pipe, args[1])
if err != nil {
fmt.Fprintf(os.Stderr, "writing to pipe failed: %v\n", err)
os.Exit(1)
}
pipe.Close()
}
func TestPipePassing(t *testing.T) {
r, w, err := os.Pipe()
if err != nil {
t.Error(err)
}
const marker = "arrakis, dune, desert planet"
childProc := helperCommand(t, "pipehandle", strconv.FormatUint(uint64(w.Fd()), 16), marker)
childProc.SysProcAttr = &syscall.SysProcAttr{AdditionalInheritedHandles: []syscall.Handle{syscall.Handle(w.Fd())}}
err = childProc.Start()
if err != nil {
t.Error(err)
}
w.Close()
response, err := io.ReadAll(r)
if err != nil {
t.Error(err)
}
r.Close()
if string(response) != marker {
t.Errorf("got %q; want %q", string(response), marker)
}
err = childProc.Wait()
if err != nil {
t.Error(err)
}
}
func TestNoInheritHandles(t *testing.T) {
cmd := exec.Command("cmd", "/c exit 88")
cmd.SysProcAttr = &syscall.SysProcAttr{NoInheritHandles: true}
err := cmd.Run()
exitError, ok := err.(*exec.ExitError)
if !ok {
t.Fatalf("got error %v; want ExitError", err)
}
if exitError.ExitCode() != 88 {
t.Fatalf("got exit code %d; want 88", exitError.ExitCode())
}
}
// start a child process without the user code explicitly starting
// with a copy of the parent's SYSTEMROOT.
// (See issue 25210.)
func TestChildCriticalEnv(t *testing.T) {
cmd := helperCommand(t, "echoenv", "SYSTEMROOT")
// Explicitly remove SYSTEMROOT from the command's environment.
var env []string
for _, kv := range cmd.Environ() {
k, _, ok := strings.Cut(kv, "=")
if !ok || !strings.EqualFold(k, "SYSTEMROOT") {
env = append(env, kv)
}
}
cmd.Env = env
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatal(err)
}
if strings.TrimSpace(string(out)) == "" {
t.Error("no SYSTEMROOT found")
}
}
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