Setup travis & coverage

[RamyElkest]

and add to readme

[glowcone]

Hi, I came from hacktoberfest and would like to work on this

[RamyElkest]

Thanks @recurza
I set up travis and coveralls, however coveralls needs some setting up on the repository side

( we probably need to npm i --save istanbul coveralls ) then follow https://github.com/nickmerwin/node-coveralls#istanbul

That requires setting a .yml.coveralls with a config, there should be a quick tutorial out there

let me if you still want to take it / need some help 👍

[glowcone]

Sure I'll try to set it up 😁

[glowcone]

I'm a bit confused: the coveralls website said Travis users don't need a coveralls.yml. So we are using istanbul instead of travis?
Also when I setup istanbul/mocha, it said there were no test files.

[RamyElkest]

You're right @recurza we don't need a yml file 👍

So mocha is the testing framework, istanbul is coverage library which determines how much is covered by the tests, and travis is the continuous integration which runs all these on every pull request.

the tests are currently in api/**/*.test.js (passing this to mocha should have found them)
but (currently) we also have to pass the --compilers argument to mocha (and istanbul) for it to work with es6.

even after this is set up, istanbul reports "no coverage information found", this is probably linked to gotwarlost/istanbul#262, which suggested using babel-istanbul.

switching to babel-istanbul worked.. but it wasn't as straight forward as i thought.. so sorry about that ;)

let me know if you have any questions

[glowcone]

oh I see. Thanks for explaining :)

[RamyElkest]

Thank you for looking into it 💯