def METHOD_NAME(case_id, owner=None, should_have=None, should_not_have=None):
    case_block = self.get_update_block(
        case_id=case_id,
        update={'greeting': "Hello!"},
        owner_id=owner.get_id if owner else None,
    )
    submit_case_blocks(case_block, domain=self.domain)
    check_has_block(case_block, should_have, should_not_have, line_by_line=False)