umi-game-template/src/pages/__tests__/index.test.tsx

import 'jest';
import Index from '..';
import React from 'react';
import renderer, { ReactTestInstance, ReactTestRenderer } from 'react-test-renderer';


describe('Page: index', () => {
  it('Render correctly', () => {
    const wrapper: ReactTestRenderer = renderer.create(<Index />);
    expect(wrapper.root.children.length).toBe(1);
    const outerLayer = wrapper.root.children[0] as ReactTestInstance;
    expect(outerLayer.type).toBe('div');
    expect(outerLayer.children.length).toBe(2);
    
  });
});