diff --git a/Lib/test/test_kqueue.py b/Lib/test/test_kqueue.py
index dd1ecc8..5ba21a2 100644
--- a/Lib/test/test_kqueue.py
+++ b/Lib/test/test_kqueue.py
@@ -163,6 +163,22 @@
         server.close()
         serverSocket.close()
 
+    def testPair(self):
+        kq = select.kqueue()
+        a, b = socket.socketpair()
+
+        a.send(b'foo')
+        event1 = select.kevent(a, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE)
+        event2 = select.kevent(b, select.KQ_FILTER_READ, select.KQ_EV_ADD | select.KQ_EV_ENABLE)
+        r = kq.control([event1, event2], 1, 1)
+        self.assertTrue(r)
+        self.assertFalse(r[0].flags & select.KQ_EV_ERROR)
+        self.assertEquals(b.recv(r[0].data), b'foo')
+
+        a.close()
+        b.close()
+        kq.close()
+
 def test_main():
     support.run_unittest(TestKQueue)
 
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index 9f4e1a2..18066ba 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -991,6 +991,12 @@
         self.assertEqual(pmap(sqr, list(range(100)), chunksize=20),
                          list(map(sqr, list(range(100)))))
 
+    def test_map_chunksize(self):
+        try:
+            self.pool.map_async(sqr, [], chunksize=1).get(timeout=TIMEOUT1)
+        except multiprocessing.TimeoutError:
+            self.fail("pool.map_async with chunksize stalled on null list")
+
     def test_async(self):
         res = self.pool.apply_async(sqr, (7, TIMEOUT1,))
         get = TimingWrapper(res.get)