Failing tests should exit loudly

[metarhia]

Failing tests should exit loudly

[nechaido]

@tshemsedinov @aqrln here is one more alternative this time using jest

[nechaido]

@tshemsedinov I propose we use tap for testing, it works well with asynchronous functions.

[aqrln]

@nechaido yeah, I've used tap and so far I like it the most among the existing testing frameworks. It has an extensive feature set (including testing asynchronous code like a charm, parallel and sequential tests, analyzing code coverage and virtually anything else you might need) yet maintaining simple and minimalistic API.

[tshemsedinov]

@nechaido @aqrln ok, we can try
@nechaido please prepare tap test for metasync.find() and metasync.for().map()

[nechaido]

@tshemsedinov @aqrln here are examples of tests using:

• mocha
• tap

[aqrln]

@nechaido I can see a few issues in your tests. Can you please raise PRs for them so that we can start the reviewing process right away? Opening and closing PRs is cheap, that's okay to land only one of those ;)