// license that can be found in the LICENSE file.

// check that initialization cycle is diagnosed
// and that closure cannot be used to hide it.
// error message is not standard format, so no errchk above.

package main

type F func()

func f() {
	if true {
		_ = func() { _ = m }
	}
}

			}
			asms, err := filepath.Glob(filepath.Join(dir, "*.s"))
			if err != nil {
				t.Fatal(err)
			}
			var files []string
			files = append(files, gos...)
			files = append(files, asms...)

			errchk(cmd, files, t)
		})
	}

	// The loopclosure analyzer (aka "rangeloop" before CL 140578)
	// is a no-op for files whose version >= go1.22, so we use a
	// go.mod file in the rangeloop directory to "downgrade".

			m = errRx.FindStringSubmatch(line)
		}
		if m == nil {
			continue
		}
		all := m[1]
		mm := errQuotesRx.FindAllStringSubmatch(all, -1)
		if mm == nil {
			t.Fatalf("%s:%d: invalid errchk line: %s", t.goFileName(), lineNum, line)
		}
		for _, m := range mm {
			rx := lineRx.ReplaceAllStringFunc(m[1], func(m string) string {
				n := lineNum
				if strings.HasPrefix(m, "LINE+") {

			fw, err = f.buildK8sPortForwarder(readyCh)
			if err != nil {
				f.errCh <- fmt.Errorf("building port forwarded: %v", err)
				return
			}
			if err = fw.ForwardPorts(); err != nil {
				log.Errorf("port forward failed: %v", err)
				f.errCh <- fmt.Errorf("port forward: %v", err)
				return
			}
			log.Infof("port forward completed without error")
			f.errCh <- nil

import (
	"context"
	"errors"
	"testing"
)

func TestErrorChannel(t *testing.T) {
	errCh := NewErrorChannel()

	if actualErr := errCh.ReceiveError(); actualErr != nil {
		t.Errorf("expect nil from err channel, but got %v", actualErr)
	}

	err := errors.New("unknown error")
	errCh.SendError(err)
	if actualErr := errCh.ReceiveError(); actualErr != err {
		t.Errorf("expect %v from err channel, but got %v", err, actualErr)
	}

	"sync"
	"testing"
	"time"
)

func Test_newReady(t *testing.T) {
	errCh := make(chan error, 10)
	ready := newReady()
	ready.set(false)
	// create 10 goroutines waiting for ready
	for i := 0; i < 10; i++ {
		go func() {
			errCh <- ready.wait(context.Background())
		}()
	}
	select {
	case <-time.After(1 * time.Second):
	case <-errCh:
		t.Errorf("ready should be blocking")
	}
	ready.set(true)

	logger := klog.FromContext(ctx)
	ctx, cancel := context.WithCancel(ctx)

	var errCh chan error
	tearDown := func() {
		cancel()

		// If the scheduler was started, let's wait for it to
		// shutdown clearly.
		if errCh != nil {
			err, ok := <-errCh
			if ok && err != nil {
				logger.Error(err, "Failed to shutdown test server clearly")
			}
		}
		if len(result.TmpDir) != 0 {

	logger := klog.FromContext(ctx)
	ctx, cancel := context.WithCancel(ctx)
	var errCh chan error
	tearDown := func() {
		cancel()

		// If the kube-controller-manager was started, let's wait for
		// it to shutdown cleanly.
		if errCh != nil {
			err, ok := <-errCh
			if ok && err != nil {
				logger.Error(err, "Failed to shutdown test server cleanly")
			}
		}

	defer ln.Close()

	errc := make(chan error, 1)
	defer func() {
		if err := <-errc; err != nil {
			t.Error(err)
		}
	}()
	go func() {
		c, err := ln.Accept()
		if err != nil {
			errc <- err
			return
		}
		defer c.Close()

		buf := make([]byte, 100)
		n, err := io.ReadFull(c, buf)
		if err != io.ErrUnexpectedEOF || n != 2 {

	serverDone <- struct{}{}
}

func TestConnectionCloseIsImmediateThroughAProxy(t *testing.T) {
	errCh := make(chan error)

	serverDone := make(chan struct{}, 1)
	backendUrlChan := make(chan string)
	go runServer(t, backendUrlChan, serverDone, errCh)

	var backendUrl string
	select {
	case err := <-errCh:
		t.Fatalf("server: error listening: %v", err)
	case backendUrl = <-backendUrlChan:
	}