Fixed #14503 -- Unified multiple implementations of test cases assert* methods that verify a given exception is raised by a callable throughout the Django test suite.

Replaced them with a new assertRaisesMessage method of a new SimpleTestCase, a lightweight subclass of unittest.TestCase. Both are also available for usage in user tests.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16610 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/test_utils/tests.py

@@ -1,6 +1,6 @@
 from __future__ import with_statement
 
-from django.test import TestCase, skipUnlessDBFeature
+from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
 from django.utils.unittest import skip
 
 from models import Person
@@ -48,6 +48,7 @@ class AssertNumQueriesTests(TestCase):
             self.client.get("/test_utils/get_person/%s/" % person.pk)
         self.assertNumQueries(2, test_func)
 
+
 class AssertNumQueriesContextManagerTests(TestCase):
     urls = 'regressiontests.test_utils.urls'
 
@@ -129,6 +130,15 @@ class SkippingExtraTests(TestCase):
         pass
 
 
+class AssertRaisesMsgTest(SimpleTestCase):
+
+    def test_special_re_chars(self):
+        """assertRaisesMessage shouldn't interpret RE special chars."""
+        def func1():
+            raise ValueError("[.*x+]y?")
+        self.assertRaisesMessage(ValueError, "[.*x+]y?", func1)
+
+
 __test__ = {"API_TEST": r"""
 # Some checks of the doctest output normalizer.
 # Standard doctests do fairly