酶-如何访问子组件的成员变量？

import { shallow } from 'enzyme';
import ChildComponent from './ChildComponent';

describe('ParentComponent', () => {
  it('should access child component member variable', () => {
    const wrapper = shallow(<ParentComponent />);
    const childComponent = wrapper.find(ChildComponent).first();
    const childInstance = childComponent.instance();
    
    // 访问子组件的成员变量
    const childVariable = childInstance.childVariable;
    
    // 断言子组件的成员变量值
    expect(childVariable).toEqual(expectedValue);
  });
});