net: fix windows and plan9 build

Don't call unix-only function in test init.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/7778043

src/pkg/net/conn_test.go

@@ -16,11 +16,11 @@ import (
 
 var connTests = []struct {
 	net  string
-	addr string
+	addr func() string
 }{
-	{"tcp", "127.0.0.1:0"},
-	{"unix", testUnixAddr()},
-	{"unixpacket", testUnixAddr()},
+	{"tcp", func() string { return "127.0.0.1:0" }},
+	{"unix", testUnixAddr},
+	{"unixpacket", testUnixAddr},
 }
 
 // someTimeout is used just to test that net.Conn implementations
@@ -41,7 +41,8 @@ func TestConnAndListener(t *testing.T) {
 			}
 		}
 
-		ln, err := Listen(tt.net, tt.addr)
+		addr := tt.addr()
+		ln, err := Listen(tt.net, addr)
 		if err != nil {
 			t.Fatalf("Listen failed: %v", err)
 		}
@@ -51,7 +52,7 @@ func TestConnAndListener(t *testing.T) {
 			case "unix", "unixpacket":
 				os.Remove(addr)
 			}
-		}(ln, tt.net, tt.addr)
+		}(ln, tt.net, addr)
 		ln.Addr()
 
 		done := make(chan int)

src/pkg/net/packetconn_test.go

@@ -15,14 +15,20 @@ import (
 	"time"
 )
 
+func strfunc(s string) func() string {
+	return func() string {
+		return s
+	}
+}
+
 var packetConnTests = []struct {
 	net   string
-	addr1 string
-	addr2 string
+	addr1 func() string
+	addr2 func() string
 }{
-	{"udp", "127.0.0.1:0", "127.0.0.1:0"},
-	{"ip:icmp", "127.0.0.1", "127.0.0.1"},
-	{"unixgram", testUnixAddr(), testUnixAddr()},
+	{"udp", strfunc("127.0.0.1:0"), strfunc("127.0.0.1:0")},
+	{"ip:icmp", strfunc("127.0.0.1"), strfunc("127.0.0.1")},
+	{"unixgram", testUnixAddr, testUnixAddr},
 }
 
 func TestPacketConn(t *testing.T) {
@@ -70,21 +76,22 @@ func TestPacketConn(t *testing.T) {
 			continue
 		}
 
-		c1, err := ListenPacket(tt.net, tt.addr1)
+		addr1, addr2 := tt.addr1(), tt.addr2()
+		c1, err := ListenPacket(tt.net, addr1)
 		if err != nil {
 			t.Fatalf("ListenPacket failed: %v", err)
 		}
-		defer closer(c1, netstr[0], tt.addr1, tt.addr2)
+		defer closer(c1, netstr[0], addr1, addr2)
 		c1.LocalAddr()
 		c1.SetDeadline(time.Now().Add(100 * time.Millisecond))
 		c1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
 		c1.SetWriteDeadline(time.Now().Add(100 * time.Millisecond))
 
-		c2, err := ListenPacket(tt.net, tt.addr2)
+		c2, err := ListenPacket(tt.net, addr2)
 		if err != nil {
 			t.Fatalf("ListenPacket failed: %v", err)
 		}
-		defer closer(c2, netstr[0], tt.addr1, tt.addr2)
+		defer closer(c2, netstr[0], addr1, addr2)
 		c2.LocalAddr()
 		c2.SetDeadline(time.Now().Add(100 * time.Millisecond))
 		c2.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
@@ -152,11 +159,12 @@ func TestConnAndPacketConn(t *testing.T) {
 			continue
 		}
 
-		c1, err := ListenPacket(tt.net, tt.addr1)
+		addr1, addr2 := tt.addr1(), tt.addr2()
+		c1, err := ListenPacket(tt.net, addr1)
 		if err != nil {
 			t.Fatalf("ListenPacket failed: %v", err)
 		}
-		defer closer(c1, netstr[0], tt.addr1, tt.addr2)
+		defer closer(c1, netstr[0], addr1, addr2)
 		c1.LocalAddr()
 		c1.SetDeadline(time.Now().Add(100 * time.Millisecond))
 		c1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))