@Test
    public void testInitMultipleTimes() throws IOException {
        // Test multiple initialization calls
        converter.init();
        assertTrue(testConverter.isInitialized());

        // Call init again
        converter.init();
        assertTrue(testConverter.isInitialized());
        assertEquals(2, testConverter.getInitCount());
    }

    @Test
    public void testInitWithException() {

        StackTraceElement[] originalStackTrace = exception.getStackTrace();
        assertNotNull(originalStackTrace);
        assertTrue(originalStackTrace.length > 0);

        // Fill in stack trace again
        Throwable filled = exception.fillInStackTrace();
        assertSame(exception, filled);

        StackTraceElement[] newStackTrace = exception.getStackTrace();
        assertNotNull(newStackTrace);

     */
    public void test_addRule_duplicates() {
        TestRule rule = new TestRule("rule1", true);

        ruleManager.addRule(rule);
        ruleManager.addRule(rule); // Add same rule again

        assertEquals(2, ruleManager.getRuleCount());
        assertTrue(ruleManager.hasRule(rule));

        // Remove one instance
        assertTrue(ruleManager.removeRule(rule));