我尝试测试通过create-react-app创建的应用。只有一个自动生成的测试文件：
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
it('renders without crashing',() => {
const div = document.createElement('div');
ReactDOM.render(<App />,div);
ReactDOM.unmountComponentAtNode(div);
});
这是我的package.json（我也有package-lock.json（〜15k行））：
{
"name": "project","version": "0.1.0","private": true,"dependencies": {
"avro-js": "^1.9.1","axios": "^0.19.0","bootstrap": "^4.3.1","jquery": "^3.4.1","prop-types": "^15.7.2","react": "^16.10.2","react-dom": "^16.10.2","react-redux": "^7.1.1","react-scripts": "3.2.0","react-syntax-highlighter": "^11.0.2","reactstrap": "^8.0.1","redux": "^4.0.4","redux-thunk": "^2.3.0"
},"scripts": {
"start": "react-scripts start","build": "react-scripts build","test": "react-scripts test","eject": "react-scripts eject"
},"eslintConfig": {
"extends": "react-app"
},"browserslist": {
"production": [
">0.2%","not dead","not op_mini all"
],"development": [
"last 1 chrome version","last 1 firefox version","last 1 safari version"
]
}
}
当我尝试使用测试脚本对其进行测试时，出现此错误：
Jest遇到意外令牌
This usually means that you are trying to import a file which Jest cannot parse,e.g. it's not plain JavaScript. By default,if Jest sees a Babel config,it will use that to transform your files,ignoring "node_modules".详细信息：
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export{默认为'./a11y-dark'中的a11yDark};
此外，我没有.babelrc文件。我尝试添加.babelrc，但没有帮助（或者我做错了）