模块未找到错误：错误：无法解析模块'react-addons-test-utils'。

Question

我有一个ES6项目，其中使用webpack将客户端代码转换为ES5。 该项目在客户端使用ReactJS，因此自然地，单元测试使用React TestUtils。 在最近的更新（0.14）中，React 更改了几个模块的导入方式（包括TestUtils）。 我想更新，但我无法弄清楚如何在更改导入后使单元测试正常工作。

当我尝试运行测试时，会收到以下消息：

04 12 2015 12:40:48.038:ERROR [karma]: { [Error: no such file or directory]
  code: 'ENOENT',
  errno: 34,
  message: 'no such file or directory',
  path: '/_karma_webpack_/public/test/main.js' }
Error: no such file or directory
    at MemoryFileSystem.readFileSync (<project>/node_modules/karma-webpack/node_modules/webpack-dev-middleware/node_modules/memory-fs/lib/MemoryFileSystem.js:107:10)
    at MemoryFileSystem.readFile (<project>/node_modules/karma-webpack/node_modules/webpack-dev-middleware/node_modules/memory-fs/lib/MemoryFileSystem.js:297:21)
    at doRead (<project>/node_modules/karma-webpack/index.js:156:26)
    at Plugin.readFile (<project>/node_modules/karma-webpack/index.js:160:3)
    at doNTCallback0 (node.js:419:9)
    at process._tickCallback (node.js:348:13)
Hash: dee787e2bee8303745db
Version: webpack 1.12.9
Time: 3657ms
                               Asset      Size  Chunks       Chunk Names
                 public/test/main.js   1.71 MB       0       public/test/main.js
5044d04bf14a5de57d08.hot-update.json  35 bytes               
chunk    {0} public/test/main.js (public/test/main.js) 1.6 MB [rendered]
    [0] ./public/test/main.js 176 bytes {0} [built]
    [1] ...

ERROR in ./public/test/common/test_modal.jsx
Module not found: Error: Cannot resolve module 'react-addons-test-utils' in <project>/public/test/common
 @ ./public/test/common/test_modal.jsx 13:28-62

ERROR in ./public/test/pages/test_auth.jsx
Module not found: Error: Cannot resolve module 'react-addons-test-utils' in <project>/public/test/pages
 @ ./public/test/pages/test_auth.jsx 17:28-62

在我的tests_auth.jsx和test_modal.jsx文件中，我开始导入以下内容：

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

我的package.json中的测试脚本如下：

PHANTOMJS_BIN=./node_modules/.bin/phantomjs && ./node_modules/karma/bin/karma start karma.config.js

我的相关依赖项如下：

  "devDependencies": {
    "chai": "^3.4.1",
    "chai-as-promised": "^5.1.0",
    "coveralls": "^2.11.4",
    "karma": "^0.13.9",
    "karma-chai": "^0.1.0",
    "karma-chai-as-promised": "^0.1.2",
    "karma-chai-plugins": "^0.6.1",
    "karma-coverage": "^0.5.2",
    "karma-mocha": "^0.2.0",
    "karma-phantomjs-launcher": "^0.2.1",
    "karma-sinon-chai": "^1.0.0",
    "karma-webpack": "^1.7.0",
    "mocha": "^2.3.3",
    "phantomjs": "^1.9.18",
    "react-hot-loader": "^1.3.0",
    "webpack-dev-server": "^1.10.1"
  },
  "dependencies": {
    "react": "0.14.3",
    "react-dom": "0.14.3",
    "webpack": "^1.12.1"
  }

My karma.config.js is:

var webpack = require('webpack');

module.exports = function(config) {
    'use strict';

    config.set({
        files: [
            './public/test/polyfill.js',
            './public/test/main.js'
        ],
        preprocessors: {
            './public/test/main.js': [
                'webpack'
            ]
        },
        browsers: [
            'PhantomJS'
        ],
        frameworks: [
            'mocha',
            'sinon-chai',
            'chai-as-promised',
            'chai'
        ],
        reporters: [
            'progress',
            'coverage'
        ],
        coverageReporter: {
            dir: 'coverage/',
            reporters: [
                {
                    type: 'lcovonly',
                    subdir: '.',
                    file: 'lcov.info'
                }, {
                    type: 'html',
                    subdir: 'html'
                }
            ]
        },
        webpack: {
            plugins: [
                new webpack.HotModuleReplacementPlugin(),
                new webpack.NoErrorsPlugin()
            ],
            module: {
                loaders: [
                    {
                        test: /\.jsx?$/,
                        exclude: /node_modules/,
                        loader: 'babel-loader?stage=0'
                    }
                ]
            },
            resolve: {
                extensions: [
                    '',
                    '.js',
                    '.jsx'
                ],
                modulesDirectories: [
                    'node_modules',
                    'public/src',
                    'public/test'
                ]
            }
        },
        webpackMiddleware: {
            noInfo: true
        },
        singleRun: true,
        plugins: [
            'karma-mocha',
            'karma-webpack',
            'karma-coverage',
            'karma-sinon-chai',
            'karma-chai',
            'karma-chai-plugins',
            'karma-chai-as-promised',
            'karma-phantomjs-launcher'
        ]
    });
};

最终，我的文件结构看起来像这样：

karma.config.js
package.json
node_modules/
public/
    app.js
    index.html
    src/
        main.jsx
    test/
        main.js
        polyfill.js
        pages/
            test_auth.jsx
        common/
            test_modal.jsx

显然我的配置有问题，但是我非常难以找出具体是哪里出了问题。有没有人遇到过类似的问题？熟悉Karma、Webpack或React 0.14的人知道我哪里做错了吗？

- CivBase

Answer 1

我感到相当愚蠢。 我忘记在我的package.json中添加 'react-addons-test-utils'。

- CivBase