如何模拟/存根node.js模块 [英] how to mock/stub a node.js module

问题描述

我正在研究一些要在RaspberryPi上运行的代码，并且正在使用Wiring-Pi节点模块. 我有两个问题

I'm working on some code to run on RaspberryPi, and I'm using the Wiring-Pi node module. I have two problems

1)Wiring-Pi无法在x86平台上构建

1) Wiring-Pi won't build on x86 platforms

2)Node-jasmine无法在RaspberryPi上构建

2) Node-jasmine won't build on RaspberryPi

因此，在研究了许多不同的想法之后，我想知道我是否最好在x86平台上模拟或存根Wiring-Pi模块，以便我可以运行测试.

So, after playing around with a bunch of different ideas, I'm wondering if I'm best off to mock or stub the Wiring-Pi module when on x86 platforms, so I can run the tests.

当然，我的问题是我正在测试的文件包含require语句

Of course, my problem is that the file I'm testing includes the require statment

    // getters.js
    var wpi = require('wiring-pi');

    // getters.spec.js
   var get = require('../lib/getters.js');

有没有一种方法可以设置规范文件，以使getters.js文件不加载connectioning-pi模块?

Is there a way I can set-up the spec file so that the getters.js file doesn't load the wiring-pi module?

推荐答案

您可以使用它来控制wire-pi模块的加载:

You can use this to control loading of the wiring-pi module:

var wpi = require('os').arch() === 'arm' ? require('wiring-pi') : {};

Jasmine可以在Pi上编译，安装和运行.您遇到什么错误?

Jasmine compiles, installs and runs on the Pi. What error do you get?

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