考虑我们有以下地图组件。这是使用TypeScript编写的,但对于普通JavaScript应该也适用。
import * as React from 'react';
import ReactMapboxGl from 'react-mapbox-gl';
const MapBox = ReactMapboxGl({
accessToken: 'pk.<redacted>'
});
export default class Map extends React.Component {
render() {
return (
<MapBox
style="mapbox://styles/mapbox/streets-v9"
zoom={[0]}
containerStyle={{
height: '500px',
width: 'inherit'
}}
/>);
}
}
然后它成为一些React应用程序的一部分,被渲染如下:
import * as React from 'react';
export default class App extends React.Component {
render() {
return (
<Map />
);
}
}
为了测试这个设置,我们使用 Jest 和 JSDOM。
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import App from './App';
it('renders without crashing', () => {
const div = document.createElement('div');
ReactDOM.render(<App />, div);
});
这个测试将无法运行并生成以下输出:
TypeError: window.URL.createObjectURL is not a function
at Object.254.../../source/worker (node_modules/mapbox-gl/dist/mapbox-gl.js:509:100)
at s (node_modules/mapbox-gl/dist/mapbox-gl.js:1:711)
at node_modules/mapbox-gl/dist/mapbox-gl.js:1:762
at Object.280.../ (node_modules/mapbox-gl/dist/mapbox-gl.js:561:28)
at s (node_modules/mapbox-gl/dist/mapbox-gl.js:1:711)
at node_modules/mapbox-gl/dist/mapbox-gl.js:1:762
at Object.263../worker_pool (node_modules/mapbox-gl/dist/mapbox-gl.js:527:29)
at s (node_modules/mapbox-gl/dist/mapbox-gl.js:1:711)
at node_modules/mapbox-gl/dist/mapbox-gl.js:1:762
at Object.191.../render/glyph_manager (node_modules/mapbox-gl/dist/mapbox-gl.js:383:809)
at s (node_modules/mapbox-gl/dist/mapbox-gl.js:1:711)
at node_modules/mapbox-gl/dist/mapbox-gl.js:1:762
at Object.248.../geo/lng_lat (node_modules/mapbox-gl/dist/mapbox-gl.js:497:338)
at s (node_modules/mapbox-gl/dist/mapbox-gl.js:1:711)
at node_modules/mapbox-gl/dist/mapbox-gl.js:1:762
at Object.72.../package.json (node_modules/mapbox-gl/dist/mapbox-gl.js:144:148)
at s (node_modules/mapbox-gl/dist/mapbox-gl.js:1:711)
at e (node_modules/mapbox-gl/dist/mapbox-gl.js:1:882)
at node_modules/mapbox-gl/dist/mapbox-gl.js:1:900
at Object.<anonymous>.i (node_modules/mapbox-gl/dist/mapbox-gl.js:1:177)
at Object.<anonymous> (node_modules/mapbox-gl/dist/mapbox-gl.js:1:413)
at Object.<anonymous> (node_modules/react-mapbox-gl/lib/map.js:21:16)
at Object.<anonymous> (node_modules/react-mapbox-gl/lib/index.js:3:13)
at Object.<anonymous> (src/Map.tsx:14:25)
at Object.<anonymous> (src/NewOrder.tsx:21:13)
at Object.<anonymous> (src/Routes.ts:17:18)
at Object.<anonymous> (src/App.tsx:16:16)
at Object.<anonymous> (src/App.test.tsx:6:169)
at <anonymous>
亲爱的读者,我的问题很简单:是否有可能解决这个问题?我们是否可以使用某些方法来注入模拟的MapBoxGL库?我在GitHub上找到了多个与此问题相关的问题,但是它们都没有提供解决方案:1、2。一些建议使用mapbox-gl-js-mock,而另一些则声称它无用,因为它也需要真实的浏览器才能运行。另外,JSDOM项目中还有一个相关问题,关于添加URL.createObjectURL,这可能会解决潜在问题。