internal/netreflect: use of internal/nettest package

Change-Id: Ia77cabda5ae189dd91c3e528b9769ba93581f00d
Reviewed-on: https://go-review.googlesource.com/34732
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

internal/netreflect/socket_test.go

@@ -5,61 +5,15 @@
 package netreflect_test
 
 import (
-	"fmt"
-	"io/ioutil"
 	"net"
 	"os"
 	"runtime"
 	"testing"
 
 	"golang.org/x/net/internal/netreflect"
+	"golang.org/x/net/internal/nettest"
 )
 
-func localPath() string {
-	f, err := ioutil.TempFile("", "netreflect")
-	if err != nil {
-		panic(err)
-	}
-	path := f.Name()
-	f.Close()
-	os.Remove(path)
-	return path
-}
-
-func newLocalListener(network string) (net.Listener, error) {
-	switch network {
-	case "tcp":
-		if ln, err := net.Listen("tcp4", "127.0.0.1:0"); err == nil {
-			return ln, nil
-		}
-		return net.Listen("tcp6", "[::1]:0")
-	case "tcp4":
-		return net.Listen("tcp4", "127.0.0.1:0")
-	case "tcp6":
-		return net.Listen("tcp6", "[::1]:0")
-	case "unix", "unixpacket":
-		return net.Listen(network, localPath())
-	}
-	return nil, fmt.Errorf("%s is not supported", network)
-}
-
-func newLocalPacketListener(network string) (net.PacketConn, error) {
-	switch network {
-	case "udp":
-		if c, err := net.ListenPacket("udp4", "127.0.0.1:0"); err == nil {
-			return c, nil
-		}
-		return net.ListenPacket("udp6", "[::1]:0")
-	case "udp4":
-		return net.ListenPacket("udp4", "127.0.0.1:0")
-	case "udp6":
-		return net.ListenPacket("udp6", "[::1]:0")
-	case "unixgram":
-		return net.ListenPacket(network, localPath())
-	}
-	return nil, fmt.Errorf("%s is not supported", network)
-}
-
 func TestSocketOf(t *testing.T) {
 	for _, network := range []string{"tcp", "unix", "unixpacket"} {
 		switch runtime.GOOS {
@@ -74,7 +28,7 @@ func TestSocketOf(t *testing.T) {
 				continue
 			}
 		}
-		ln, err := newLocalListener(network)
+		ln, err := nettest.NewLocalListener(network)
 		if err != nil {
 			t.Error(err)
 			continue
@@ -109,7 +63,7 @@ func TestPacketSocketOf(t *testing.T) {
 				continue
 			}
 		}
-		c, err := newLocalPacketListener(network)
+		c, err := nettest.NewLocalPacketListener(network)
 		if err != nil {
 			t.Error(err)
 			continue