// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package poll_test

import (
	"errors"
	"internal/poll"
	"os"
	"syscall"
)

func badStateFile() (*os.File, error) {
	if os.Getuid() != 0 {
		return nil, errors.New("must be root")
	}
	// Using OpenFile for a device file is an easy way to make a
	// file attached to the runtime-integrated network poller and

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !linux

package poll_test

import (
	"errors"
	"os"
	"runtime"
)

func badStateFile() (*os.File, error) {
	return nil, errors.New("not supported on " + runtime.GOOS)
}

func isBadStateFileError(err error) (string, bool) {
	return "", false

package poll_test

import (
	"fmt"
	"io/fs"
	"net"
	"os"
	"testing"
	"time"
)

func TestReadError(t *testing.T) {
	t.Run("ErrNotPollable", func(t *testing.T) {
		f, err := badStateFile()
		if err != nil {
			t.Skip(err)
		}
		defer f.Close()

		// Give scheduler a chance to have two separated
		// goroutines: an event poller and an event waiter.
		time.Sleep(100 * time.Millisecond)