print on stdout durint live test

product/ERP5Type/tests/ERP5TypeLiveTestCase.py

@@ -219,7 +219,13 @@ def runLiveTest(test_list, verbosity=1, stream=None, **kw):
   suite = loader.loadTestsFromNames(test_list)
   output = stream
   if stream is None:
-    output = StringIO()
+    class StdoutStringIO(StringIO):
+      # a string IO that also writes on stdout.
+      def write(self, s):
+        sys.stdout.write(s)
+        StringIO.write(self, f)
+    output = StdoutStringIO()
+
   output.write("**Running Live Test:\n")
   ZopeTestCase._print = output.write