React Jest示例不起作用

时间:2015-11-12 00:09:27

标签: javascript node.js testing reactjs jestjs

尝试运行Jest测试React代码的示例(来自PRAW documentation),我收到以下错误:

  > @ test /home/aizquier/jest/examples/react
  > jest

  Using Jest CLI v0.7.1
   FAIL  __tests__/CheckboxWithLabel-test.js 
  ● Runtime Error
  SyntaxError: /home/aizquier/jest/examples/react/__tests__/CheckboxWithLabel-test.js: Unexpected token (15:6)
  npm ERR! Test failed.  See above for more details.

测试在文件CheckboxWithLabel-test.js的第15行失败:

jest.dontMock('../CheckboxWithLabel');

import React from 'react';
import ReactDOM from 'react-dom';
import TestUtils from 'react-addons-test-utils';

const CheckboxWithLabel = require('../CheckboxWithLabel');

describe('CheckboxWithLabel', function() {

  it('changes the text after click', function() {

    // Render a checkbox with label in the document
    var checkbox = TestUtils.renderIntoDocument(
      <CheckboxWithLabel labelOn="On" labelOff="Off" />
    );

    var checkboxNode = ReactDOM.findDOMNode(checkbox);

    // Verify that it's Off by default
    expect(checkboxNode.textContent).toEqual('Off');

    // Simulate a click and verify that it is now On
    TestUtils.Simulate.change(TestUtils.findRenderedDOMComponentWithTag(checkbox, 'input'));
    expect(checkboxNode.textContent).toEqual('On');
  });

});

显然处理.jsx的预处理器无效。 package.json如下:

{
  "dependencies": {
    "react": "~0.14.0",
    "react-dom": "~0.14.0"
  },
  "devDependencies": {
    "react-addons-test-utils": "~0.14.0",
    "babel-jest": "*",
    "jest-cli": "*"
  },
  "scripts": {
    "test": "jest"
  },
  "jest": {
    "scriptPreprocessor": "./node_modules/babel-jest",
    "unmockedModulePathPatterns": [
      "./node_modules/react",
      "./node_modules/react-dom",
      "./node_modules/react-addons-test-utils",
      "./node_modules/fbjs"
    ]
  }
}

我的节点是v4.2.2,npm是3.3.12。

任何想法??

2 个答案:

答案 0 :(得分:6)

我遇到了同样的问题。看起来这是由最近发布的Babel 6引起的问题。它是tracked here,希望很快就能添加一个修复程序!

与此同时,您可以在babel-jest中返回早期版本的package.json。例如,尝试^5.3.0

答案 1 :(得分:2)

如果您使用的是Babel 6,则没有默认转换,因此您需要添加一些预设。不确定你是否可以在&#39; package.json&#39;但我添加了&#39; .babelrc&#39;文件与&#39;反应&#39;和&#39; es2015&#39;预设并对其进行排序。见http://babeljs.io/docs/plugins/preset-react/