Python transaction Examples

Example #1

File: gae_datastore_services_test.py Project: vcamari2-bit/oppia

    def test_raises_exception_from_callback(self):
        def raise_exception():
            """Raises an Exception."""

            raise Exception('uh-oh!')

        with self.assertRaisesRegexp(Exception, 'uh-oh!'):
            gae_datastore_services.transaction(raise_exception)

Example #2

File: gae_datastore_services_test.py Project: vcamari2-bit/oppia

    def test_returns_none_from_void_callback(self):
        def do_nothing():
            """Does nothing."""

            pass

        self.assertIsNone(gae_datastore_services.transaction(do_nothing))

Example #3

File: gae_datastore_services_test.py Project: vcamari2-bit/oppia

 def test_returns_value_of_callback(self):
     self.assertEqual(gae_datastore_services.transaction(lambda: 1), 1)

Example #4

File: gae_datastore_services_test.py Project: vcamari2-bit/oppia

 def test_returns_value_of_nested_transaction(self):
     self.assertEqual(
         gae_datastore_services.transaction(
             lambda: gae_datastore_services.transaction(lambda: 1)), 1)