assertEquals(0.0f, elevateWord.getBoost(), 0.001f);
    }

    @Test
    public void testConstructorWithNegativeBoost() {
        // Test constructor with negative boost
        String word = "negative boost";
        float boost = -1.5f;
        List<String> readings = Arrays.asList("reading1");
        List<String> fields = Arrays.asList("field1");
        List<String> tags = Arrays.asList("tag1");

        TestRule rule2 = new TestRule("rule2", false);

        ruleManager.addRule(rule1);

        try {
            ruleManager.addRule(-1, rule2);
            fail("Should throw IndexOutOfBoundsException for negative index");
        } catch (IndexOutOfBoundsException e) {
            // Expected
        }

        try {
            ruleManager.addRule(5, rule2);