assertEquals(3, rules.size());
        assertEquals("rule3", rules.get(2).getRuleId());
    }

    /**
     * Test adding rule at invalid index
     */
    public void test_addRule_atInvalidIndex() {
        TestRule rule1 = new TestRule("rule1", true);
        TestRule rule2 = new TestRule("rule2", false);

        ruleManager.addRule(rule1);

        try {