diff --git a/slixmpp/test/slixtest.py b/slixmpp/test/slixtest.py
index 668b02c0..d0e380f7 100644
--- a/slixmpp/test/slixtest.py
+++ b/slixmpp/test/slixtest.py
@@ -434,7 +434,9 @@ class SlixTest(unittest.TestCase):
             timeout      -- Time to wait in seconds for data to be received by
                             a live connection.
         """
+        self.wait_()
         self.xmpp.data_received(data)
+        self.wait_()
 
     def recv_header(self, sto='',
                           sfrom='',
@@ -623,10 +625,20 @@ class SlixTest(unittest.TestCase):
         loop = asyncio.get_event_loop()
         future = asyncio.ensure_future(self.xmpp.run_filters(), loop=loop)
         queue = self.xmpp.waiting_queue
-        print(queue)
         loop.run_until_complete(queue.join())
         future.cancel()
 
+    def wait_(self):
+        async def yield_some():
+            for i in range(100):
+                await asyncio.sleep(0)
+        loop = asyncio.get_event_loop()
+        loop.run_until_complete(yield_some())
+
+    def run_coro(self, coro):
+        loop = asyncio.get_event_loop()
+        loop.run_until_complete(coro)
+
     def stream_close(self):
         """
         Disconnect the dummy XMPP client.