Merged revisions 79049 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r79049 | florent.xicluna | 2010-03-18 20:51:47 +0100 (jeu, 18 mar 2010) | 2 lines

  #8155: Preserve backward compatibility for test_support.check_warnings().  Add regression tests.
........

1 files changed, 8 insertions, 3 deletions

diff --git a/Lib/test/support.py b/Lib/test/support.py
index 28f7e27..73c4228 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -534,14 +534,19 @@ def check_warnings(*filters, **kwargs):
 
     Optional argument:
      - if 'quiet' is True, it does not fail if a filter catches nothing
-        (default False)
+        (default True without argument,
+         default False if some filters are defined)
 
     Without argument, it defaults to:
-        check_warnings(("", Warning), quiet=False)
+        check_warnings(("", Warning), quiet=True)
     """
+    quiet = kwargs.get('quiet')
     if not filters:
         filters = (("", Warning),)
-    return _filterwarnings(filters, kwargs.get('quiet'))
+        # Preserve backward compatibility
+        if quiet is None:
+            quiet = True
+    return _filterwarnings(filters, quiet)
 
 
 class CleanImport(object):