Getting Started with Intern
Intern is a full-featured JavaScript test framework developed by the fine folks at SitePen. While there are other excellent options out there (most notably Mocha[53]), Intern stands out as a natural choice for testing CoffeeScript because it includes full support for source maps.
Before we begin, make a copy of the project from the previous chapter in a new directory. Now let’s install Intern as a development dependency and add a tests directory:
| | $ npm install --save-dev intern |
| | $ mkdir tests |
Intern doesn’t have out-of-the-box support for CoffeeScript, so we’ll be compiling our test files with Grunt. To accommodate that, let’s subdivide tests:
| | $ mkdir tests/src |
| | $ mkdir |
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