Add base test class that includes unclaimed temporary and file descriptor test mixins. GitLab issue #309.

mayan/apps/django_gpg/tests/test_models.py

@@ -5,8 +5,7 @@ import StringIO
 import gnupg
 import mock
 
-from django.test import TestCase
-
+from common.tests import BaseTestCase
 from common.utils import TemporaryFile
 
 from ..exceptions import (
@@ -44,7 +43,7 @@ def mock_recv_keys(self, keyserver, *keyids):
     return ImportResult()
 
 
-class KeyTestCase(TestCase):
+class KeyTestCase(BaseTestCase):
     def test_key_instance_creation(self):
         # Creating a Key instance is analogous to importing a key
         key = Key.objects.create(key_data=TEST_KEY_DATA)