[IDCS 480 UT] Adding unit tests

[venkata-ramana-d2l]

https://desire2learn.atlassian.net/browse/IDCS-480

[github-actions[bot]]

PR Checklist:

Did you use a semver keyword in a commit message?

• [ ] Yes I used one in at least one of my commits
• [ ] No but I will use a semver keyword in the commit message when I merge and squash

Did you paste the Rally US URL in the description?

• [ ] Yes
• [ ] No as there's no corresponding Rally US