caucase.test: Disable event wait timeout on caucased thread.

Otherwise, this will trigger if a test takes more than 10s to run, causing
caucased to exit prematurely, as only _stopServer triggers this event.

caucase/test.py

@@ -224,12 +224,13 @@ class UntilEvent(object):
   Like utils.until, but with a threading.Event replacing
   KeyboardInterrupt as the early interruption source.
   """
-  def __init__(self, event):
+  def __init__(self, event, event_wait=10):
     """
     event (Event)
       Event to wait upon. Set and cleared outside this class.
     """
     self._event = event
+    self._event_wait = event_wait
     self._action = ON_EVENT_RAISE
     self._wait_event = threading.Event()
     self._wait_event.clear()
@@ -282,7 +283,7 @@ class UntilEvent(object):
     if now < deadline:
       self._deadline = deadline
       self._wait_event.set()
-      assert self._event.wait(10)
+      assert self._event.wait(self._event_wait)
       self._deadline = None
       self._event.clear()
       if self._action is ON_EVENT_EXPIRE:
@@ -555,7 +556,7 @@ class CaucaseTest(unittest.TestCase):
     """
     Start caucased server
     """
-    self._server_until = until = UntilEvent(self._server_event)
+    self._server_until = until = UntilEvent(self._server_event, None)
     self._server = server = threading.Thread(
       target=caucase.http.main,
       kwargs={