使用mocha测试含有es6 modules的代码是,需要使用babel-register来转化语法。babel-register跟项目中web端的项目共享同一份.babelrc。如下:
{
“presets”: [
[
“env”,
{
“modules”: false,
“targets”: {
“browsers”: [
“> 1%”,
“last 2 versions”,
“not ie <= 8”
]
}
}
],
“stage-2”
],
“plugins”: [
“transform-vue-jsx”,
“transform-runtime”
],
“env”: {
“test” : {
“presets”: [“env”, “stage-2”]
}
}
}
在windows powershell 中:
set BABEL_ENV=test | mocha –rquire babel-register
这里要注意的是powershell中的管理命令连接符是 | ,而不是&&
在mocha的issue中,有一个是希望加入–env标志,但tj大神直接说不需要, 你干嘛不set xxx_env && mocha.
底下也有人给了另外的解决办法
Since this still seems to get a lot of traffic I thought I would throw out
a relatively simply solution for people like me who wish there was a –env flag.
What I’ve been doing is add a test/mocha.env.js file in the repo,
and then add –require test/mocha.env.js to mocha.opts:
// mocha.opts
–require babel-register
–require test/mocha.env.js
–timeout 60000
// mocha.env.js
process.env.NODE_ENV = ‘test’;
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