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go/internal/jsonrpc2/serve_test.go
Ian Cottrell dd5f9d1033 internal/stack: add the leak test
This adds a package for dealing with stacks in tests.
The only function at this time is NoLeak which verifies that a test
does not leak any goroutines, and prints a stack summary if it does.

Change-Id: I284b846f422334b745bef0e96d84138295120a62
Reviewed-on: https://go-review.googlesource.com/c/tools/+/232681
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-05-27 14:25:42 +00:00

63 lines
1.3 KiB
Go

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package jsonrpc2
import (
"context"
"net"
"sync"
"testing"
"time"
"golang.org/x/tools/internal/stack/stacktest"
)
func TestIdleTimeout(t *testing.T) {
stacktest.NoLeak(t)
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
ln, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
connect := func() net.Conn {
conn, err := net.DialTimeout("tcp", ln.Addr().String(), 5*time.Second)
if err != nil {
panic(err)
}
return conn
}
server := HandlerServer(MethodNotFound)
// connTimer := &fakeTimer{c: make(chan time.Time, 1)}
var (
runErr error
wg sync.WaitGroup
)
wg.Add(1)
go func() {
defer wg.Done()
runErr = Serve(ctx, ln, server, 100*time.Millisecond)
}()
// Exercise some connection/disconnection patterns, and then assert that when
// our timer fires, the server exits.
conn1 := connect()
conn2 := connect()
conn1.Close()
conn2.Close()
conn3 := connect()
conn3.Close()
wg.Wait()
if runErr != ErrIdleTimeout {
t.Errorf("run() returned error %v, want %v", runErr, ErrIdleTimeout)
}
}