add tests for #8

[STSonyThomas]

Description

Please include a summary of the change and which issue is fixed. Also include relevant motivation and context.

• Fixes Write Unit Tests for add_or_update_normal_file method #8

Type of change

• Tests update

Checklist

• [Yes ] My code follows the style guidelines of this project
• [ Yes] I have performed a self-review of my own code
• [ Yes] I have commented my code, particularly in hard-to-understand areas
• [ Tested] My changes generate no new warnings
• [Tested ] New and existing unit tests pass locally with my changes
• [Yes ] I have maintained a clean commit history by using the necessary Git commands
• [ Yes] I have checked that my code does not cause any merge conflicts

Screenshots (if applicable)

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[Kota-Karthik]

@STSonyThomas LGTM!