mirror of https://github.com/golang/go.git
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package os_test
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import (
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"errors"
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"internal/testenv"
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"os"
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"syscall"
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"testing"
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)
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func TestFindProcessViaPidfd(t *testing.T) {
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testenv.MustHaveGoBuild(t)
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t.Parallel()
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if err := os.CheckPidfdOnce(); err != nil {
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// Non-pidfd code paths tested in exec_unix_test.go.
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t.Skipf("skipping: pidfd not available: %v", err)
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}
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p, err := os.StartProcess(testenv.GoToolPath(t), []string{"go"}, &os.ProcAttr{})
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if err != nil {
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t.Fatalf("starting test process: %v", err)
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}
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p.Wait()
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// Use pid of a non-existing process.
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proc, err := os.FindProcess(p.Pid)
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// FindProcess should never return errors on Unix.
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if err != nil {
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t.Fatalf("FindProcess: got error %v, want <nil>", err)
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}
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// FindProcess should never return nil Process.
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if proc == nil {
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t.Fatal("FindProcess: got nil, want non-nil")
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}
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if proc.Status() != os.StatusDone {
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t.Fatalf("got process status: %v, want %d", proc.Status(), os.StatusDone)
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}
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// Check that all Process' public methods work as expected with
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// "done" Process.
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if err := proc.Kill(); err != os.ErrProcessDone {
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t.Errorf("Kill: got %v, want %v", err, os.ErrProcessDone)
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}
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if err := proc.Signal(os.Kill); err != os.ErrProcessDone {
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t.Errorf("Signal: got %v, want %v", err, os.ErrProcessDone)
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}
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if _, err := proc.Wait(); !errors.Is(err, syscall.ECHILD) {
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t.Errorf("Wait: got %v, want %v", err, os.ErrProcessDone)
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}
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// Release never returns errors on Unix.
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if err := proc.Release(); err != nil {
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t.Fatalf("Release: got %v, want <nil>", err)
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}
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}
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