TestResponseProcessor processor1 = new TestResponseProcessor();
        testRule.setRuleId("originalId");
        testRule.setResponseProcessor(processor1);

        // Register
        testRule.register(0);

        // Verify initial state
        Rule registeredRule = ruleManager.getRules().get(0);
        assertEquals("originalId", registeredRule.getRuleId());
        assertSame(processor1, registeredRule.getResponseProcessor());