IocpProactor.wait_for_handle() test now also checks the result of the future

asyncio/windows_events.py

@@ -427,6 +427,11 @@ class IocpProactor:
         return self._register(ov, None, finish_connect_pipe, wait_for_post=True)
 
     def wait_for_handle(self, handle, timeout=None):
+        """Wait for a handle.
+
+        Return a Future object. The result of the future is True if the wait
+        completed, or False if the wait did not complete (on timeout).
+        """
         if timeout is None:
             ms = _winapi.INFINITE
         else:

tests/test_windows_events.py

@@ -98,8 +98,10 @@ class ProactorTests(test_utils.TestCase):
         # result should be False at timeout
         fut = self.loop._proactor.wait_for_handle(event, 0.5)
         start = self.loop.time()
-        self.loop.run_until_complete(fut)
+        done = self.loop.run_until_complete(fut)
         elapsed = self.loop.time() - start
+
+        self.assertEqual(done, False)
         self.assertFalse(fut.result())
         self.assertTrue(0.48 < elapsed < 0.9, elapsed)
 
@@ -109,8 +111,10 @@ class ProactorTests(test_utils.TestCase):
         # result should be True immediately
         fut = self.loop._proactor.wait_for_handle(event, 10)
         start = self.loop.time()
-        self.loop.run_until_complete(fut)
+        done = self.loop.run_until_complete(fut)
         elapsed = self.loop.time() - start
+
+        self.assertEqual(done, True)
         self.assertTrue(fut.result())
         self.assertTrue(0 <= elapsed < 0.3, elapsed)