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Fixed #17760 -- Implemented callable database features as cached properties

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This does remove the requirement to call features.confirm() method
before checking the properties.
Thanks cdestiger and Ramiro Morales for their work on the patch.
This commit is contained in:
Claude Paroz 2012-06-09 15:59:52 +02:00
parent 484fcd34a4
commit aa423575e7
7 changed files with 29 additions and 47 deletions
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3
tests/regressiontests/backends/tests.py
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@ -403,8 +403,7 @@ class BackendTestCase(TestCase):
self.assertTrue(hasattr(connection.ops, 'connection'))
self.assertEqual(connection, connection.ops.connection)
def test_supports_needed_confirm(self):
connection.features.confirm()
def test_cached_db_features(self):
self.assertIn(connection.features.supports_transactions, (True, False))
self.assertIn(connection.features.supports_stddev, (True, False))
self.assertIn(connection.features.can_introspect_foreign_keys, (True, False))