Jest检查元素属性是否存在

您可以使用 enzyme's shallow method 要渲染组件,然后检查路径元素上的道具,请执行以下操作:

// at the top of your test file file:
import { shallow } from 'enzyme';

...

it('should render path element with the expected d attribute', () => {
  // shallowly render your component:
  const wrapper = shallow(<Component />);

  // find the path element using a css selector
  const trendline = wrapper.find('path#TrendLine');

  // make assertion
  expect(trendline.props()).toHaveProperty('d', 'M170,28.76363636363638C170,28.76363636363638,221.46221083573664,189.150059910');
});