add js unit test

.gitignore

@@ -1,2 +1,3 @@
 */node_modules
-*/dist
+*/dist
+*/vue-unitTest-karma-webpack

README.md

@@ -132,4 +132,14 @@ webpack、eslint需要全局npm安装
 
     ps： mocha等单元测试的内容请上网自己搜，[阮一峰mocha](http://www.ruanyifeng.com/blog/2015/12/a-mocha-tutorial-of-examples.html)
 
-    es6需要babel来编译，chai是断言库，mocha是测试框架
+    es6需要babel来编译，chai是断言库，mocha是测试框架
+
+13. js-unitTest-karma-webpack
+    es6的单元测试demo
+    karma+mocha+webpack+chrome
+    坑点：
+    有时未报错，但是运行不成功，chrome里的debug按钮点击一下，进入debut.html 打开控制台，你就看到错误信息了！！！！！！
+    * files囊括需要包含的文件 例如'unit/**/*.test.js'
+    * preprocessors是预处理，需要用webpack进行配置
+    * webpack 的打包和webpack官网一致
+    还可以根据需求加入coverage等信息。

js-unitTest-karma-webpack/karma.conf.js

@@ -0,0 +1,86 @@
+// Karma configuration
+// Generated on Tue Sep 18 2018 16:01:24 GMT+0800 (GMT+08:00)
+
+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: ['mocha'],
+
+
+    // list of files / patterns to load in the browser
+    files: [
+      'unit/*'
+    ],
+
+
+    // list of files / patterns to exclude
+    exclude: [
+    ],
+
+
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+      'unit/**/*.test.js':['webpack']
+    },
+    webpack:{
+      module: {
+        rules: [
+          {
+            test: /\.js$/,
+            exclude: /(node_modules|bower_components)/,
+            use: {
+              loader: 'babel-loader',
+              options: {
+                presets: ['@babel/preset-env']
+              }
+            }
+          }
+        ]
+      }
+    },
+
+
+    // 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: false,
+
+
+    // 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
+  })
+}