1 files changed, 10 insertions, 4 deletions
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index 2f3fa185c95..b6ad0189215 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -65,15 +65,21 @@ class SelectorEventLoopSignalTests(test_utils.TestCase):
 
     @mock.patch('asyncio.unix_events.signal')
     def test_add_signal_handler_coroutine_error(self, m_signal):
+        m_signal.NSIG = signal.NSIG
 
         @asyncio.coroutine
         def simple_coroutine():
             yield from []
 
-        self.assertRaises(
-            TypeError,
-            self.loop.add_signal_handler,
-            signal.SIGINT, simple_coroutine)
+        # callback must not be a coroutine function
+        coro_func = simple_coroutine
+        coro_obj = coro_func()
+        self.addCleanup(coro_obj.close)
+        for func in (coro_func, coro_obj):
+            self.assertRaisesRegex(
+                TypeError, 'coroutines cannot be used with add_signal_handler',
+                self.loop.add_signal_handler,
+                signal.SIGINT, func)
 
     @mock.patch('asyncio.unix_events.signal')
     def test_add_signal_handler(self, m_signal):