[1.7.x] refs #22487: Don't flush out data from before normal TestCases (spatialite)

            verbosity=max(verbosity - 1, 0),

            interactive=False,

            database=self.connection.alias,

            load_initial_data=False)

            load_initial_data=False,

            test_flush=True)

        # We then serialize the current state of the database into a string

        # and store it on the connection. This slightly horrific process is so people

        if serialize:

            self.connection._test_serialized_contents = self.serialize_db_to_string()

        # We need to then do a flush to ensure that any data installed by

        # custom SQL has been removed. The only test data should come from

        # test fixtures, or autogenerated from post_migrate triggers.

        # This has the side effect of loading initial data (which was

        # intentionally skipped in the migrate).

        call_command('flush',

            verbosity=max(verbosity - 1, 0),

            interactive=False,

            database=self.connection.alias)

        call_command('createcachetable', database=self.connection.alias)

        # Ensure a connection for the side effect of initializing the test database.