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Fixed #27170 -- Added DatabaseWrapper class attributes to ease subclassing.

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Chris Jerdonek 2016-09-08 13:33:36 -07:00 • committed by Tim Graham
parent 0bbab97c28
commit 7ca3b391b6
11 changed files with 87 additions and 70 deletions
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25
tests/backends/tests.py
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@ -32,6 +32,31 @@ from django.utils.six.moves import range
from . import models
class DatabaseWrapperTests(SimpleTestCase):
def test_initialization_class_attributes(self):
"""
The "initialization" class attributes like client_class and
creation_class should be set on the class and reflected in the
corresponding instance attributes of the instantiated backend.
"""
conn = connections[DEFAULT_DB_ALIAS]
conn_class = type(conn)
attr_names = [
('client_class', 'client'),
('creation_class', 'creation'),
('features_class', 'features'),
('introspection_class', 'introspection'),
('ops_class', 'ops'),
('validation_class', 'validation'),
]
for class_attr_name, instance_attr_name in attr_names:
class_attr_value = getattr(conn_class, class_attr_name)
self.assertIsNotNone(class_attr_value)
instance_attr_value = getattr(conn, instance_attr_name)
self.assertIsInstance(instance_attr_value, class_attr_value)
class DummyBackendTest(SimpleTestCase):
def test_no_databases(self):