作者回复: 建议可以整体的去学习了解下前端测试这个方向的知识体系。这两个问题回答下： 1. 单元测试可以对业务代码进行测试，我们团队针对核心业务会做单元测试和端对端测试。单测更加适合通用组件和基础模块。和本地调试的区别：本地调试是黑盒，颗粒度较粗，单测是白盒，颗粒度更细。另外单侧可以覆盖到具体的代码，比如某段代码只有特定的情况才会执行。单测也是一个衡量项目质量很好的手段，每次需求迭代都可以通过单测保证基础的逻辑不受到影响。 2. 单元测试颗粒度更细，是白盒，需要针对具体的代码逻辑分支进行测试用例编写。冒烟测试只是关注最基本的功能是否ok，比如构建是否成功，是否有资源生成出来，也是一个黑盒的过程。

2019-07-17

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yhq

单元测试和测试覆盖率一般是在构建前全部完成,还是构建后呢

作者回复: 这里有两种情况：第一种：也是我们本章的场景，即针对基础组件或者构建包而言。需要通过单测和测试覆盖率保证组件质量。这个是需要在发版前严格遵守的。第二种：对于业务而言，每次commit时会进行业务代码的构建。同时异步的触发单测和测试覆盖率检查，并没有先后顺序要求。

2019-07-21

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Noah

"Mocha"是“摩卡”，发音是/ˈmōkə/。一种咖啡，摩卡咖啡。哈哈，当然，这不重要。

2019-10-14

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8

不想说什么

老师你好 const path = require('path'); process.chdir(path.join(__dirname, 'smoke/template')); describe('builder-webpack test case', () => { require('./unit/webpack-base-test'); }); 在编写这个测试用例时为什么要切换到template目录

2019-12-19

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小岩岩

请问为什么要使用process.chdir修改工作目录呢？不是很理解

2022-10-28

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RageYourDream

geektime-builder-webpack 这个包，现在没有了。

2020-04-26

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Geek_983df7

No coverage information was collected, exit without writing coverage information E:\ImportantTest\WEBPACK\my-test\builder-webpack\node_modules\.bin\_mocha:2 basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')") ^^^^^^^ SyntaxError: missing ) after argument list at Module._compile (internal/modules/cjs/loader.js:892:18) at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10) at Object.Module._extensions.<computed> [as .js] (E:\ImportantTest\WEBPACK\my-test\builder-webpack\node_modules\istanbul\lib\hook.js:109:37) at Module.load (internal/modules/cjs/loader.js:812:32) at Function.Module._load (internal/modules/cjs/loader.js:724:14) at Function.Module.runMain (internal/modules/cjs/loader.js:1025:10) at runFn (E:\ImportantTest\WEBPACK\my-test\builder-webpack\node_modules\istanbul\lib\command\common\run-with-cover.js:122:16) at E:\ImportantTest\WEBPACK\my-test\builder-webpack\node_modules\istanbul\lib\command\common\run-with-cover.js:251:17 at E:\ImportantTest\WEBPACK\my-test\builder-webpack\node_modules\istanbul\lib\util\file-matcher.js:68:16 at E:\ImportantTest\WEBPACK\my-test\builder-webpack\node_modules\async\lib\async.js:52:16 npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! ztsk-webpack@1.0.0 test: `istanbul cover ./node_modules/.bin/_mocha` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the ztsk-webpack@1.0.0 test script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2019-11-25T07_47_47_152Z-debug.log

2019-11-25

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周大侠

老师执行"test": "istanbul cover ./node_modules/.bin/_mocha",报错这是我的版本 "istanbul": "^0.4.5", "mocha": "^6.2.2", test /Users/zzh/project/build-webpack-zzh > istanbul cover ./node_modules/.bin/_mocha Failed to parse file: /Users/zzh/project/build-webpack-zzh/lib/webpack.base.js Transformation error; return original code { Error: Line 38: Unexpected token ) at constructError (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:2407:21) at createError (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:2426:17) at unexpectedTokenError (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:2500:13) at throwUnexpectedToken (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:2505:15) at parsePrimaryExpression (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:3307:13) at inheritCoverGrammar (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:2681:18) at parseLeftHandSideExpressionAllowCall (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:3414:20) at inheritCoverGrammar (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:2681:18) at parsePostfixExpression (/Users/zzh/project/build-webpack-zzh/node_modules/istanbul/node_modules/esprima/esprima.js:3490:16)

2019-11-04

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请叫我胖虎

老师照着你的写法报这个错 istanbul cover ./node_modules/.bin/_mocha No coverage information was collected, exit without writing coverage information D:\D_disk\LEARN_CODE\webpack4.0\build-webpack\node_modules\.bin\_mocha:2 basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')") ^^^^^^^ SyntaxError: missing ) after argument list at Module._compile (internal/modules/cjs/loader.js:721:23) at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10) at Object.Module._extensions.(anonymous function) [as .js] (D:\D_disk\LEARN_CODE\webpack4.0\build-webpack\node_modules\istanbul\lib\hook.js:109:37) at Module.load (internal/modules/cjs/loader.js:653:32) at tryModuleLoad (internal/modules/cjs/loader.js:593:12) at Function.Module._load (internal/modules/cjs/loader.js:585:3) at Function.Module.runMain (internal/modules/cjs/loader.js:829:12) at runFn (D:\D_disk\LEARN_CODE\webpack4.0\build-webpack\node_modules\istanbul\lib\command\common\run-with-cover.js:122:16) at D:\D_disk\LEARN_CODE\webpack4.0\build-webpack\node_modules\istanbul\lib\command\common\run-with-cover.js:251:17 at D:\D_disk\LEARN_CODE\webpack4.0\build-webpack\node_modules\istanbul\lib\util\file-matcher.js:68:16 npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! build-webpack@1.0.0 test: `istanbul cover ./node_modules/.bin/_mocha` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the build-webpack@1.0.0 test script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\11294\AppData\Roaming\npm-cache\_logs\2019-07-23T04_09_28_095Z-debug.log

2019-07-23

5

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