adding a testrunner the zope.testing.testrunner can see

lib/python/Testing/ZopeTestCase/zopedoctest/tests.py

+"""test runner that works with zope.testing.testrunner"""
+import unittest
+import os, sys
+
+import os, sys
+
+suite = unittest.TestSuite()
+
+names = os.listdir(os.path.dirname(__file__))
+tests = [x[:-3] for x in names \
+         if x.startswith('test') and x.endswith('.py') \
+         and not x == 'tests.py']
+
+import Testing.ZopeTestCase.zopedoctest
+for test in tests:
+    m = __import__("Testing.ZopeTestCase.zopedoctest.%s" %test)
+    m = getattr(Testing.ZopeTestCase.zopedoctest, test)
+    if hasattr(m, 'test_suite'):
+        suite.addTest(m.test_suite())
+
+def test_suite():
+    return suite