unix: enable TestPoll for all unix systems

Poll is now supported for all unix systems. Also enable TestPoll for all
of them.

Change-Id: Id6250702bf0d29c49fbeeed4cca21d232b72666a
Reviewed-on: https://go-review.googlesource.com/74310
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

unix/syscall_linux_test.go

@@ -56,34 +56,6 @@ func TestIoctlGetInt(t *testing.T) {
 	t.Logf("%d bits of entropy available", v)
 }
 
-func TestPoll(t *testing.T) {
-	f, cleanup := mktmpfifo(t)
-	defer cleanup()
-
-	const timeout = 100
-
-	ok := make(chan bool, 1)
-	go func() {
-		select {
-		case <-time.After(10 * timeout * time.Millisecond):
-			t.Errorf("Poll: failed to timeout after %d milliseconds", 10*timeout)
-		case <-ok:
-		}
-	}()
-
-	fds := []unix.PollFd{{Fd: int32(f.Fd()), Events: unix.POLLIN}}
-	n, err := unix.Poll(fds, timeout)
-	ok <- true
-	if err != nil {
-		t.Errorf("Poll: unexpected error: %v", err)
-		return
-	}
-	if n != 0 {
-		t.Errorf("Poll: wrong number of events: got %v, expected %v", n, 0)
-		return
-	}
-}
-
 func TestPpoll(t *testing.T) {
 	f, cleanup := mktmpfifo(t)
 	defer cleanup()
@@ -113,25 +85,6 @@ func TestPpoll(t *testing.T) {
 	}
 }
 
-// mktmpfifo creates a temporary FIFO and provides a cleanup function.
-func mktmpfifo(t *testing.T) (*os.File, func()) {
-	err := unix.Mkfifo("fifo", 0666)
-	if err != nil {
-		t.Fatalf("mktmpfifo: failed to create FIFO: %v", err)
-	}
-
-	f, err := os.OpenFile("fifo", os.O_RDWR, 0666)
-	if err != nil {
-		os.Remove("fifo")
-		t.Fatalf("mktmpfifo: failed to open FIFO: %v", err)
-	}
-
-	return f, func() {
-		f.Close()
-		os.Remove("fifo")
-	}
-}
-
 func TestTime(t *testing.T) {
 	var ut unix.Time_t
 	ut2, err := unix.Time(&ut)

unix/syscall_unix_test.go

@@ -343,3 +343,50 @@ func TestDup(t *testing.T) {
 		t.Errorf("Dup: stdout write not in file, expected %v, got %v", string(b1), string(b2))
 	}
 }
+
+func TestPoll(t *testing.T) {
+	f, cleanup := mktmpfifo(t)
+	defer cleanup()
+
+	const timeout = 100
+
+	ok := make(chan bool, 1)
+	go func() {
+		select {
+		case <-time.After(10 * timeout * time.Millisecond):
+			t.Errorf("Poll: failed to timeout after %d milliseconds", 10*timeout)
+		case <-ok:
+		}
+	}()
+
+	fds := []unix.PollFd{{Fd: int32(f.Fd()), Events: unix.POLLIN}}
+	n, err := unix.Poll(fds, timeout)
+	ok <- true
+	if err != nil {
+		t.Errorf("Poll: unexpected error: %v", err)
+		return
+	}
+	if n != 0 {
+		t.Errorf("Poll: wrong number of events: got %v, expected %v", n, 0)
+		return
+	}
+}
+
+// mktmpfifo creates a temporary FIFO and provides a cleanup function.
+func mktmpfifo(t *testing.T) (*os.File, func()) {
+	err := unix.Mkfifo("fifo", 0666)
+	if err != nil {
+		t.Fatalf("mktmpfifo: failed to create FIFO: %v", err)
+	}
+
+	f, err := os.OpenFile("fifo", os.O_RDWR, 0666)
+	if err != nil {
+		os.Remove("fifo")
+		t.Fatalf("mktmpfifo: failed to open FIFO: %v", err)
+	}
+
+	return f, func() {
+		f.Close()
+		os.Remove("fifo")
+	}
+}