test-setup

Set up Mocha, Chai, and Bluebird for testing. Requiring this file:

1. Makes chai available globally
2. Makes sinon available globally.
3. Applies chai-as-promised
4. Applies sinon-as-promised
5. Logs long stack traces for Bluebird promises
6. Throws onPossiblyUnhandledRejection as errors, causing tests to fail

Just require to set up:

require('test-setup');