Add a test

Author: asvetlov

tests/test_simple.py

@@ -246,3 +246,9 @@ def test_async_close_loop(event_loop):
 @pytest.mark.xfail(strict=True, raises=asyncio.TimeoutError)
 async def test_timeout():
     await asyncio.sleep(1)
+
+
+@pytest.mark.asyncio(timeout="abc")
+@pytest.mark.xfail(strict=True, raises=ValueError)
+async def test_timeout_not_numeric():
+    await asyncio.sleep(1)