[英]Coffeescript unit test failing with Mocha, Should, Node.js
我正在尝试使用Mocha为CoffeeScript示例类层次结构运行示例CoffeeScript单元测试。 但是我一直在收到错误,而且似乎在没有任何帮助的情况下也无法修复它们。 这是我的示例CoffeeScript文件,位于/ src文件夹中:
#Animal.coffee
class Animal
constructor: (@name) ->
move: (meters) ->
console.log @name + " moved #{meters}m."
class Snake extends Animal
move: ->
console.log "Slithering..."
super 5
class Horse extends Animal
move: ->
console.log "Galloping..."
super 45
#module.exports = new Snake()
module.exports.Snake = Snake
这是/ Tests文件夹中的CoffeeScript单元测试:
#AnimalTest.coffee
should = require 'should'
{ Snake } = require "../src/Animal"
describe 'sample', ->
it 'should pass', ->
snake = new Snake "Venomous python"
snake.should.be.an.instanceOf(Snake)
我已经在全球范围内安装了所有这些库。 因此,当我通过命令行(Windows 7)执行此命令时:
Desktop>mocha --compilerscoffee:coffee-script/register Tests
它抛出了这个错误:
desktop\Tests\sampleTest.coffee:15
snake.should.be.an.instanceOf(Snake);
^
ReferenceError: snake is not defined
at Object.<anonymous> (c:\users\ap\desktop\Tests\AnimalTest.coffee:8:3)
at Object.<anonymous> (c:\users\ap\desktop\Tests\AnimalTest.coffee:2:1)
at Module._compile (module.js:456:26)
at Object.loadFile (C:\Users\ap\AppData\Roaming\npm\node_modules\coffee-sc
ript\lib\coffee-script\register.js:16:19)
at Module.load (C:\Users\ap\AppData\Roaming\npm\node_modules\coffee-script
\lib\coffee-script\register.js:45:36)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:172:27
at Array.forEach (native)
at Mocha.loadFiles (C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\lib
\mocha.js:169:14)
at Mocha.run (C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\lib\mocha
.js:356:31)
at Object.<anonymous> (C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\
bin\_mocha:359:16)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:902:3
我正在使用CoffeeScript版本1.7.1,Mocha版本1.18.2和Node版本0.10.26。 我尝试到处寻找并尝试了测试之间的所有组合,但是我一生都无法想出如何使它成功创建对象并运行测试的方法。
作为参考,我尝试了所有其他组合的这些方法: 使用nodejs从另一个CoffeeScript文件中请求CoffeeScript文件
如何在Coffeescript Mocha Test中检查类继承?
有人可以指出可能出什么问题吗?
更新1:修改了dule指出的所有内容,但现在我收到此错误:
module.js:340
throw err;
^
Error: Cannot find module 'should'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (C:\Users\ap\Desktop\Tests\AnimalTest.coffee:2:11)
at Object.<anonymous> (C:\Users\ap\Desktop\Tests\AnimalTest.coffee:2:1)
at Module._compile (module.js:456:26)
at Object.loadFile (C:\Users\ap\AppData\Roaming\npm\node_modules\coffee-sc
ript\lib\coffee-script\register.js:16:19)
at Module.load (C:\Users\ap\AppData\Roaming\npm\node_modules\coffee-script
\lib\coffee-script\register.js:45:36)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:172:27
at Array.forEach (native)
at Mocha.loadFiles (C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\lib
\mocha.js:169:14)
at Mocha.run (C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\lib\mocha
.js:356:31)
at Object.<anonymous> (C:\Users\ap\AppData\Roaming\npm\node_modules\mocha\
bin\_mocha:359:16)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:902:3
更新2:我对AnimalTest脚本进行了以下更改,并通过了测试。
should = require ("../npm/node_modules/should/should")
{ Snake } = require ("../src/Animal.coffee")
describe 'sample', ->
it 'should pass', ->
console.log(new Snake "Venomous python")
但是,由于某种原因,创建对象并将其保存以供使用仍然失败。 和我得到相同的snake not defined
错误。
看来您有很多问题。 请尝试以下操作:
src / animal.coffee:
class Animal
constructor: (@name) ->
move: (meters) ->
console.log @name + " moved #{meters}m."
class Snake extends Animal
move: ->
console.log "Slithering..."
super 5
module.exports.Snake = Snake
测试/animalTest.coffee
should = require "should"
{ Snake } = require "../src/animal"
describe 'sample', ->
it 'should pass', ->
snake = new Snake "Venomous python"
snake.should.be.an.instanceOf(Snake)
然后运行(从项目根目录开始):
mocha --compilers coffee:coffee-script/register tests
因此,这完全是奇怪的。 一个解释是非常受欢迎的! 这就是我所做的,测试通过了:
should = require ("../npm/node_modules/should/should")
{ Snake } = require ("../src/Animal.coffee")
describe 'sample', ->
it 'should pass', ->
(new Snake "Venomous python").should.be.an.instanceOf(Snake)
使用CoffeeScript 1.8.0和Mocha 1.21.4时,我的测试用例随机中断。
可以手动批准该测试用例,但是它在mocha中失败,并带有诸如“ undefined function ...”之类的奇怪异常。 无法复制长久失败,异常,堆栈跟踪...
解决方法:
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