使用 jasmine 进行 nodejs 单元测试时出错，业力：未定义要求

Question

我正在使用 jasmine 使用 karma 工具进行 node.js 单元测试。

运行时出现错误：“require is not defined”。

我尝试了很多方法，例如使用 karma-browserify 、 requirejs ，但都没有奏效。

我在link 中尝试了所有建议的解决方案，但没有一个对我有用。

这是我的 karma.config.js

// Karma configuration
// Generated on Mon Nov 28 2016 13:37:38 GMT+0530 (India Standard Time)

module.exports = function(config) {
  config.set({

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '',


    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: [
        'jasmine',
        'browserify'
    ],


    // list of files / patterns to load in the browser
    files: [
      'src/**/*.js',
      'src/server.js',
      'test/*.js'
    ],
      browserify: {
          debug: true,
          transform: [ 'brfs' ]
      },
      watchify: {
          poll: true
      },


    // list of files to exclude
    exclude: [

    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
        'test/*.js': [ 'browserify' ]
    },
      browserify: {
               bundleDelay: 2000,  // This may reduce instances of the karma-browserify "require is not defined" bug
              debug: true,
            },



    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress'],


    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['Chrome'],


    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: false,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity
  })
};

package.json
"devDependencies": {
    "browserify": "^13.1.1",
    "grunt": "^0.4.5",
    "grunt-contrib-jshint": "^0.11.3",
    "grunt-jasmine-node": "^0.3.1",
    "grunt-jscs": "^2.5.0",
    "jasmine-core": "^2.2.0",
    "karma": "^1.3.0",
    "karma-browserify": "^5.1.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-jasmine": "^1.0.2",
    "load-grunt-tasks": "^3.4.0",
    "watchify": "^3.7.0"
  }

Answer 1

此错误可能是由您的src/**/*.js 和src/server.js 文件中的require 调用引起的。

您在浏览器中加载这些文件：

   files: [
      'src/**/*.js',
      'src/server.js',
      'test/*.js'
   ],

不使用 broserify 进行预处理：

preprocessors: {
    'test/*.js': [ 'browserify' ]
},