Merged regressiontests and modeltests into the test root.

tests/base/models.py

@@ -0,0 +1,23 @@
+from __future__ import unicode_literals
+
+from django.db import models
+from django.utils import six
+
+
+# The models definitions below used to crash. Generating models dynamically
+# at runtime is a bad idea because it pollutes the app cache. This doesn't
+# integrate well with the test suite but at least it prevents regressions.
+
+
+class CustomBaseModel(models.base.ModelBase):
+    pass
+
+
+class MyModel(six.with_metaclass(CustomBaseModel, models.Model)):
+        """Model subclass with a custom base using six.with_metaclass."""
+
+
+if not six.PY3:
+    class MyModel(models.Model):
+        """Model subclass with a custom base using __metaclass__."""
+        __metaclass__ = CustomBaseModel