Классы миксинов перенесены в проект

net/xeaf/rack/tests/models/mixins/__init__.py

@@ -11,4 +11,6 @@
 from .created_at_mixin_tests import CreatedAtMixinTests
 from .deleted_at_mixin_tests import DeletedAtMixinTests
 from .expired_at_mixin_tests import ExpiresAtMixinTests
-
+from .slug_mixin_tests import SlugMixinTests
+from .updated_at_mixin_tests import UpdatedAtMixinTests
+from .uuid_id_mixin_tests import UuidIdMixinTests