1 files changed, 16 insertions, 0 deletions
diff --git a/tests/validation/__init__.py b/tests/validation/__init__.py
new file mode 100644
index 0000000000..5daa06be66
--- /dev/null
+++ b/tests/validation/__init__.py
@@ -0,0 +1,16 @@
+from django.core.exceptions import ValidationError
+from django.test import TestCase
+
+
+class ValidationTestCase(TestCase):
+    def assertFailsValidation(self, clean, failed_fields):
+        with self.assertRaises(ValidationError) as cm:
+            clean()
+        self.assertEqual(sorted(failed_fields), sorted(cm.exception.message_dict))
+
+    def assertFieldFailsValidationWithMessage(self, clean, field_name, message):
+        with self.assertRaises(ValidationError) as cm:
+            clean()
+        self.assertIn(field_name, cm.exception.message_dict)
+        self.assertEqual(message, cm.exception.message_dict[field_name])
+