javascript - React 应用程序：Jest 遇到了意外的令牌

问题描述

我尝试测试通过创建的应用程序create-react-app。自动生成的测试文件只有一个：

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 遇到了意外的令牌

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".

细节：

({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export

{ 默认为 a11yDark } 来自 './a11y-dark';

另外，我没有.babelrc文件。我尝试添加.babelrc但没有帮助（或者我做错了）

标签： javascriptreactjsunit-testingcreate-react-app

javascript - React 应用程序：Jest 遇到了意外的令牌

问题描述

解决方案

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