((Queue<?>) errorsField.get(null)).clear();
    }

    // Test addError method
    public void test_addError_withValidMessage() {
        String errorMsg = "Test error message";
        Crawler.addError(errorMsg);

        try {
            Field errorsField = Crawler.class.getDeclaredField("errors");
            errorsField.setAccessible(true);
            @SuppressWarnings("unchecked")