github.com/jhump/golang-x-tools@v0.0.0-20220218190644-4958d6d39439/internal/jsonrpc2/serve_test.go (about)

     1  // Copyright 2020 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package jsonrpc2
     6  
     7  import (
     8  	"context"
     9  	"net"
    10  	"sync"
    11  	"testing"
    12  	"time"
    13  
    14  	"github.com/jhump/golang-x-tools/internal/stack/stacktest"
    15  )
    16  
    17  func TestIdleTimeout(t *testing.T) {
    18  	stacktest.NoLeak(t)
    19  	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
    20  	defer cancel()
    21  
    22  	ln, err := net.Listen("tcp", "localhost:0")
    23  	if err != nil {
    24  		t.Fatal(err)
    25  	}
    26  	defer ln.Close()
    27  
    28  	connect := func() net.Conn {
    29  		conn, err := net.DialTimeout("tcp", ln.Addr().String(), 5*time.Second)
    30  		if err != nil {
    31  			panic(err)
    32  		}
    33  		return conn
    34  	}
    35  
    36  	server := HandlerServer(MethodNotFound)
    37  	// connTimer := &fakeTimer{c: make(chan time.Time, 1)}
    38  	var (
    39  		runErr error
    40  		wg     sync.WaitGroup
    41  	)
    42  	wg.Add(1)
    43  	go func() {
    44  		defer wg.Done()
    45  		runErr = Serve(ctx, ln, server, 100*time.Millisecond)
    46  	}()
    47  
    48  	// Exercise some connection/disconnection patterns, and then assert that when
    49  	// our timer fires, the server exits.
    50  	conn1 := connect()
    51  	conn2 := connect()
    52  	conn1.Close()
    53  	conn2.Close()
    54  	conn3 := connect()
    55  	conn3.Close()
    56  
    57  	wg.Wait()
    58  
    59  	if runErr != ErrIdleTimeout {
    60  		t.Errorf("run() returned error %v, want %v", runErr, ErrIdleTimeout)
    61  	}
    62  }