Added unit test cases for markupParser utils

[vaibhavj2111]

Description

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Closes #198

What change does this PR introduce?

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (changes to docs/code comments)
• Unit Test

What is the proposed approach?

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Checklist:

• The commit message follows our adopted guidelines
• Testing has been done for the change(s) added (for bug fixes/features)
• Relevant comments/docs have been added/updated (for bug fixes/features)

[tjtanjin]

LGTM, but the test file is named incorrectly 😢 Kindly help to rename, thanks!

[vaibhavj2111]

LGTM, but the test file is named incorrectly 😢 Kindly help to rename, thanks!

Oops 😿 , fixed it now. Any more changes required??

[tjtanjin]

LGTM! 😊