Add more tests and refactor to make code more testable

[gionkunz]

No description provided.

[valotas]

Shall I put the tests under source/scripts named with a spec.js suffix? I really do not like creating test in a different folder.

[gionkunz]

I also like to put test files into the folder where the component under test lives. However, for a library project with less components I don't see the same benefit as with an application where you might end up with 30+ components. Also it's still quite common to use a test folder and given possible future contributions with people who are more used to a test folder, I'd rather go with the current approach.

[gionkunz]

It would be awesome if the project also contains everything required so we can run the tests on Travis!

[valotas]

I'll start with the tests first :)

[valotas]

And I think I'll integrate first istanbul so that I'll know what to test

[gionkunz]

Cool, istanbul is awesome! :-)

[gionkunz]

As we have now some code coverage I'll close this issue. There is still need for more tests but this is no longer a blocker for 1.0.0