如何用mock模拟readonly属性？

const obj = {
  name: 'John',
};

Object.defineProperty(obj, 'readonlyProp', {
  value: 'This is a readonly property',
  writable: false, // 设置为false，使属性只读
  enumerable: true,
  configurable: false, // 设置为false，使属性不可配置
});

console.log(obj.readonlyProp); // 输出：This is a readonly property

obj.readonlyProp = 'Trying to modify the readonly property'; // 尝试修改属性
console.log(obj.readonlyProp); // 输出：This is a readonly property，属性值未被修改