commit 4b0ed8b6030450e6d99909a7c683e9642e546387

Author: Michael Hudson-Doyle <michael.hudson@canonical.com>

Date:   Wed Jun 7 13:52:17 2017 -0700

    fix test_remove_watch_file flakiness

    pass a known-good file descriptor to watch_file rather than hard-coding 5

    Fixes #164

diff --git a/urwid/tests/test_event_loops.py b/urwid/tests/test_event_loops.py

index c85bbed..b01212d 100644

--- a/urwid/tests/test_event_loops.py

+++ b/urwid/tests/test_event_loops.py

@@ -30,9 +30,14 @@ class EventLoopTestMixin(object):

     def test_remove_watch_file(self):

         evl = self.evl

-        handle = evl.watch_file(5, lambda: None)

-        self.assertTrue(evl.remove_watch_file(handle))

-        self.assertFalse(evl.remove_watch_file(handle))

+        fd_r, fd_w = os.pipe()

+        try:

+            handle = evl.watch_file(fd_r, lambda: None)

+            self.assertTrue(evl.remove_watch_file(handle))

+            self.assertFalse(evl.remove_watch_file(handle))

+        finally:

+            os.close(fd_r)

+            os.close(fd_w)

     _expected_idle_handle = 1