public void test_assistDBMetaProvider() {
        DBMetaProvider result = invokerAssistant.assistDBMetaProvider();
        assertNull(result);
    }

    // Test assistSqlClauseCreator
    public void test_assistSqlClauseCreator() {
        SqlClauseCreator result = invokerAssistant.assistSqlClauseCreator();
        assertNull(result);
    }

    // Test assistStatementFactory
    public void test_assistStatementFactory() {