JavaScript 标准样式无法识别 Mocha
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JavaScript Standard Style does not recognize Mocha
提问by urig
I have a Mochatest file that looks like this:
我有一个Mocha测试文件，如下所示：
var expect = require('chai').expect
var muting = require('../muting')
describe('muting', function () {
describe('init()', function () {
it('should inject an object into twitter', function () {
var twitter = 'twitter'
muting.init(twitter)
expect(muting.twitter).to.equal(twitter)
})
})
})
When I run mochafrom the CLI, it runs the test successfully.
当我mocha从 CLI 运行时，它成功运行了测试。
When I run standard(the executable for JavaScript Standard Style) I get errors on Mocha's framework functions like so:
当我运行standard（JavaScript Standard Style的可执行文件）时，我在 Mocha 的框架函数上遇到错误，如下所示：
standard: Use JavaScript Standard Style (https://github.com/feross/standard)
c:\..\test\index.js:5:0: 'describe' is not defined.
c:\..\test\index.js:6:2: 'describe' is not defined.
c:\..\test\index.js:7:4: 'it' is not defined.
What's the cleanest way to make Standard not complain about these functions?
让 Standard 不抱怨这些功能的最简洁方法是什么？
回答by Krzysztof Kaczor
Actually, you don't need to list every single global variable in your package.json
实际上，您不需要在 package.json 中列出每个全局变量
You can specify environments instead like this:
您可以像这样指定环境：
"standard": {
"env": [ "mocha" ]
}
Source: Official ESLint configuration docs.
来源：官方 ESLint 配置文档。
回答by Developerium
I prefer to edit my .eslintrcand add mocha to env section:
我更喜欢编辑我的.eslintrc并将 mocha 添加到 env 部分：
...
"env": {
"commonjs": true,
"node": true,
"mocha": true
},
...
this way my package.jsonfile is kept clean, also vscode plugin for eslint understands it better
这样我的package.json文件就保持干净了，eslint 的 vscode 插件也能更好地理解它
回答by Nick Tomlin
while eslint's comment configuration works great for a single file, I prefer to use standard's package.jsonglobalsconfiguration to do this for my projects. E.g.
虽然 eslint 的注释配置适用于单个文件，但我更喜欢使用标准的配置来为我的项目执行此操作。例如package.jsonglobals
{
"name": "my-package",
"version": "1.0.0",
"standard": {
"globals": [
"describe",
"context",
"before",
"beforeEach",
"after",
"afterEach",
"it",
"expect"
]
}
}
回答by Ryu_hayabusa
for eslint use this line on the beginning of test_file.js
对于 eslint 在test_file.js的开头使用这一行
/* eslint-env mocha */
回答by Niklas Ingholt
You can use the same solution as for web workers
您可以使用与网络工作者相同的解决方案
/* global describe it */
var expect = require('chai').expect
var muting = require('../muting')
describe('muting', function () {
describe('init()', function () {
it('should inject an object into twitter', function () {
var twitter = 'twitter'
muting.init(twitter)
expect(muting.twitter).to.equal(twitter)
})
})
})
回答by Gianluca Casati
As pointed out by Nick Tomlinyou just need to declare globals.
正如Nick Tomlin所指出的，你只需要声明全局变量。
I use to put it in the command line, since I have different globals for tests as for sources or different parts of the project.
我过去常常把它放在命令行中，因为我有不同的全局变量用于测试源或项目的不同部分。
For tests we should use
对于测试，我们应该使用
standard --global describe --global it test/
elsewhere in my project I want to lint code that uses jQuery so I use
在我项目的其他地方，我想对使用 jQuery 的代码进行 lint，所以我使用
standard --global $ src/client/
Bonus tip
小费
If you are using vim with Syntastic you maybe want to add to your .vimrc
如果你在 Syntastic 中使用 vim，你可能想添加到你的.vimrc
let b:syntastic_checkers = ['standard']
let g:syntastic_javascript_standard_args = "--global $ --global it --global describe"
