Integrating Stryker with Meteor

Requirements

• We have to mock the Meteor Framework in our unit tests using testdouble.js
• (you can read more in here)
• We have to use Babel along with Stryker to transpile our code (see stryker.conf.js)

How to Run Tests

Unit Tests:

npm test

Mutation Tests:

npm test-stryker

.babelrc File

We use a .babelrc in the root of the project to make Meteor and Mocha compile in the same way. The file used here follows these recommendations. There are a few compromises that you will have to live with in your Meteor app as a result of this:

• It won't allow you to use nested import declarations.
• You cannot use absolute import paths from your project root (Node will read it as being the root of your filesystem)

There may be a way to improve this further using meteor-babel/register - here is an example. A PR that makes this work would be welcome! Regardless, it seems likely that this situation will improve as Meteor migrates to NPM.