1 files changed, 109 insertions, 0 deletions
diff --git a/src/os/exec/exec_windows_test.go b/src/os/exec/exec_windows_test.go
new file mode 100644
index 0000000..efd3710
--- /dev/null
+++ b/src/os/exec/exec_windows_test.go
@@ -0,0 +1,109 @@
+// 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"
+	"internal/testenv"
+	"io"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"syscall"
+	"testing"
+)
+
+var (
+	quitSignal os.Signal = nil
+	pipeSignal os.Signal = syscall.SIGPIPE
+)
+
+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) {
+	t.Parallel()
+
+	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) {
+	t.Parallel()
+
+	cmd := testenv.Command(t, "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) {
+	t.Parallel()
+	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")
+	}
+}