Added unit test in host app for helper functions

[Akhil017]

Title : Added unit test in host app for helper functions Issue No. : #412 Code Stack : React

Checklist:

• [X] I have mentioned the issue number in my Pull Request.
• [X] I have commented my code, particularly in hard-to-understand areas
• [] I have created a helpful and easy to understand README.md
• [] I have updated the Index.html file for my contribution

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