Test that default South configuration raises error

tests/tests.py

@@ -2,13 +2,13 @@ from __future__ import unicode_literals, absolute_import
 
 
 from unittest import TestCase as UnitTestCase
 from unittest import TestCase as UnitTestCase
 try:
 try:
-    from unittest import skipIf
+    from unittest import skipIf, skipUnless
 except:
 except:
-    from django.utils.unittest import skipIf
+    from django.utils.unittest import skipIf, skipUnless
 
 
 import django
 import django
 from django.conf import settings
 from django.conf import settings
-from django.core.exceptions import ValidationError
+from django.core.exceptions import ImproperlyConfigured, ValidationError
 from django.core import serializers
 from django.core import serializers
 from django.db import connection
 from django.db import connection
 from django.test import TestCase, TransactionTestCase
 from django.test import TestCase, TransactionTestCase
@@ -560,3 +560,13 @@ class DeconstructTestCase(UnitTestCase):
         name, path, args, kwargs = instance.deconstruct()
         name, path, args, kwargs = instance.deconstruct()
         new_instance = TaggableManager(*args, **kwargs)
         new_instance = TaggableManager(*args, **kwargs)
         self.assertEqual(instance.rel.through, new_instance.rel.through)
         self.assertEqual(instance.rel.through, new_instance.rel.through)
+
+
+@skipUnless(django.VERSION < (1, 7), "test only applies to 1.6 and below")
+class SouthSupportTests(TestCase):
+    def test_import_migrations_module(self):
+        try:
+            from taggit.migrations import __doc__  # noqa
+        except ImproperlyConfigured as e:
+            exception = e
+        self.assertIn("SOUTH_MIGRATION_MODULES", exception.args[0])