}

    @Test
    public void test_toString_withEmptyValues() {
        // Test toString with empty values
        String name = "emptyParam";
        String[] values = {};
        RequestParameter param = new RequestParameter(name, values);

        String expected = "[emptyParam, []]";
        assertEquals(expected, param.toString());
    }

    @Test
    public void test_toString_withNullInValues() {

        stack.addFirst(element);
    }

    public Element pop() {
        Element element = stack.removeFirst();
        if (emptyPara(element)) {
            element.getParentNode().removeChild(element);
        }
        return element;
    }

    private boolean emptyPara(Element element) {
        if (!element.getTagName().equals("para")) {
            return false;
        }

    }

    // Test evaluate with empty parameters
    @Test
    public void test_evaluate_emptyParams() {
        Map<String, Object> emptyParams = new HashMap<>();
        Object result = testScriptEngine.evaluate("template", emptyParams);
        assertEquals("processed: template with params", result);
    }

    // Test evaluate with null template
    @Test