Setup unit tests

[xitter]

• Describe the Feature Request
  Add safeguard unit tests to the repository

• Describe Preferred Solution
  I would prefer having https://github.com/testing-library/react-testing-library instead of enzyme here, see post. Thoughts are welcome in comments.

[apollonian]

react-testing-library is what I was thinking as well to begin with. 👍

[xitter]

Awesome, I will work on this.

[Buyantogtokh]

@xitter how's your test going? I also would like to work on this issue @apollonian.

[xitter]

I will be soon raising a PR for unit test setup, you are welcome to add more tests once it gets merged.

[ankiiitraj]

This issue will help be getting started with unit testing, I want to work on it!

[apollonian]

@ankiiitraj Sure, we could use your help!

[ankiiitraj]

working on it! stuck somewhere!

[apollonian]

@ankiiitraj Let me know how I could be helpful!

[ankiiitraj]

I will draft a PR today! Thanks

[alex-parra]

PR with jest and tests for all props and events:
#337