Add and remove list testing using Jest

[tonnytech]

Added a test for the add-remove functions

[rloterh]

Hi Tei,

While you made a great effort in this project, unfortunately, I cannot proceed to review your code.

Invalid Code Review Request

You have submitted a project, with a ReadMe that does not conform to the new standardized ReadMe template. Kindly ensure to update your ReadMe to this standardized template, and then request another review.

New ReadMe Template:

Your Code Review Request will be marked as invalid in your Dashboard, so please submit a new one once you are ready 🙏

Cheers and Happy coding!👏👏👏

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[Ismailco]

Hi @teitonny,

Your project is complete! There is nothing else to say other than... it's time to merge it
Congratulations! 🎉

Highlights

✔️ No linter errors
✔️ Used Github Flow
✔️ Work documented professionally

Optional suggestions

• [OPTIONAL] Kindly consider customizing your README more so it looks professional and descriptive
  Every comment with the [OPTIONAL] prefix won't stop the approval of this PR. However, I strongly recommend you to take them into account as they can make your code better. Some of them were simply missed by the previous reviewer and addressing them will really improve your application.

Cheers and Happy coding!👏👏👏

Feel free to leave any questions or comments in the PR thread if something is not 100% clear.
Please, remember to tag me in your question so I can receive the notification.

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