diff -r 5ff1fc726848 -r c6bca38c1cbf parts/django/tests/modeltests/validation/__init__.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/modeltests/validation/__init__.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,21 @@
+import unittest
+
+from django.core.exceptions import ValidationError
+
+class ValidationTestCase(unittest.TestCase):
+    def assertFailsValidation(self, clean, failed_fields):
+        self.assertRaises(ValidationError, clean)
+        try:
+            clean()
+        except ValidationError, e:
+            self.assertEquals(sorted(failed_fields), sorted(e.message_dict.keys()))
+    
+    def assertFieldFailsValidationWithMessage(self, clean, field_name, message):
+        self.assertRaises(ValidationError, clean)
+        try:
+            clean()
+        except ValidationError, e:
+            self.assertTrue(field_name in e.message_dict)
+            self.assertEquals(message, e.message_dict[field_name])
+
+