You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: net_test.go
    path of file: ./repos/gitkube/vendor/google.golang.org/appengine/internal
    
    the code of the file until where you have to start completion: // Copyright 2014 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.

// +build !appengine

package internal

import (
	"sync"
	"testing"
	"time"

	netcontext "golang.org/x/net/context"

	basepb "google.golang.org/appengine/internal/base"
)

func TestDialLimit(t *testing.T) {
	// Fill up semaphore with false acquisitions to permit only two TCP connections at a time.
	// We don't replace limitSem because that results in a data race when net/http lazily closes connections.
	nFake := cap(limitSem) - 2
	for i := 0; i < nFake; i++ {
		limitSem <- 1
	}
	defer func() {
		
    
func TestDialLimit(t *testing.T) {
	// Fill up semaphore with false acquisitions to permit only two TCP connections at a time.
	// We don't replace limitSem because that results in a data race when net/http lazily closes connections.
	nFake := cap(limitSem) - 2
	for i := 0; i < nFake; i++ {
		limitSem <- 1
	}
	defer func() {
		for i := 0; i < nFake; i++ {
			<-limitSem
		}
	}()

	f, c, cleanup := setup() // setup is in api_test.go
	defer cleanup()
	f.hang = make(chan int)

	// If we make two RunSlowly RPCs (which will wait for f.hang to be strobed),
	// then the simple Non200 RPC should hang.
	var wg sync.WaitGroup
	wg.Add(2)
	for i := 0; i < 2; i++ {
		go func() {
			defer wg.Done()
			Call(toContext(c), "errors", "RunSlowly", &basepb.VoidProto{}, &basepb.VoidProto{})
		}()
	}
	time.Sleep(50 * time.Millisecond) // let those two RPCs start

	ctx, _ := netcontext.WithTimeout(toContext(c), 50*time.Millisecond)
	err := Call(ctx, "errors", "Non200", &basepb.VoidProto{}, &basepb.VoidProto{})
	if err != errTimeout {
		t.Errorf("Non200 RPC returned with err %v, want errTimeout", err)
	}

	// Drain the two RunSlowly calls.
	f.hang <- 1
	f.hang <- 1
	wg.Wait()
}