mocha 测试需要外部 js 文件

问题描述

所以我在我的 express.js 项目中使用 BDD 和 mocha.我才刚刚开始，所以这是我的第一个测试用例:

So I'm playing around with BDD and mocha with my express.js project. I'm just getting started so here is what I have as my first test case:

should = require "should"
require "../lib/models/skill.js"


describe 'Skill', ->
    describe '#constructor()', ->
        it 'should return an instance of class skill', ->
            testSkill = new Skill "iOS", "4 years", 100
            testSkill.constructor.name.should.equal 'Skill'

(这个coffeescript也会生成一些看起来很奇怪的js，因为它会插入返回到最后一条语句.这是用coffeescript设置测试的正确方法吗?)

(also this coffeescript generates some odd looking js since it inserts returns to last statement.. is this the correct way to setup a test with coffeescript?)

现在当我运行 mocha 时出现此错误:

Now when I run mocha I get this error:

 1) Skill #constructor() should return an instance of class skill:
     ReferenceError: Skill is not defined

我认为这意味着 Skill.js 没有正确导入.此时我的技能类很简单，只是一个构造函数:

Which I assume means skill.js was not imported correctly. My skill class is very simple at this point, just a constructor:

class Skill
    constructor: (@name,@years,@width) ->

如何导入我的模型以便我的 mocha 测试可以访问它们?

How do I import my models so my mocha test can access them?

推荐答案

你需要像这样导出你的 Skill 类:

You need to export your Skill class like this:

class Skill
    constructor: (@name,@years,@width) ->

module.exports = Skill

并将其分配给测试中的变量:

And assign it to variable in your test:

should = require "should"
Skill = require "../lib/models/skill.js"


describe 'Skill', ->
    describe '#constructor()', ->
        it 'should return an instance of class skill', ->
            testSkill = new Skill "iOS", "4 years", 100
            testSkill.constructor.name.should.equal 'Skill'

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