def checkDatabaseUse(self):
        """Enforce `database_use_permitted`."""
        if self.database_use_possible and not self.database_use_permitted:
            from django.db import connection

            self.expectThat(
                connection.connection,
                testtools.matchers.Is(None),
                "Test policy forbids use of the database.",
            )
            connection.close() 

def assertAttributes(self, tested_object, attributes):
        """Check multiple attributes of `tested_object` against a dict.

        :param tested_object: Any object whose attributes should be checked.
        :param attributes: A dict of attributes to test, and their expected
            values.  Only these attributes will be checked.
        """
        matcher = testtools.matchers.MatchesStructure.byEquality(**attributes)
        self.assertThat(tested_object, matcher)