fix tests on Python 2.4, named tuples are not available there

diff --git a/babel/tests/support.py b/babel/tests/support.py
index 5e40c9f1a3c3a9bdd03ca68d322be61a97a9dea7..5fba9a93218acd3e39864dbb070fe5f3b1d474b1 100644 (file)
--- a/babel/tests/support.py
+++ b/babel/tests/support.py
@@ -199,7 +199,7 @@ class NullTranslationsTestCase(unittest.TestCase):
             method = getattr(self.translations, name)
             null_method = getattr(self.null_translations, name)
             signature = inspect.getargspec(method)
-            parameter_names = [name for name in signature.args if name != 'self']
+            parameter_names = [name for name in signature[0] if name != 'self']
             values = [data[name] for name in parameter_names]
             self.assertEqual(method(*values), null_method(*values))