Clean up socket map at start of test to avoid running out of

descriptors when running the tests repeatedly.

src/zc/ngi/tests.py

@@ -15,7 +15,9 @@
 
 $Id$
 """
-import threading, unittest
+import unittest
+import sys
+import threading
 from zope.testing import doctest
 import zc.ngi.testing
 import zc.ngi.async
@@ -151,6 +153,9 @@ def async_evil_setup(test):
     #import logging
     #logging.getLogger().addHandler(logging.StreamHandler())
 
+    # clean up the map.
+    zc.ngi.async.cleanup_map()
+
     # See if we can break the main loop before running the async test
 
     # Connect to bad port with bad handler