Implement Mock File Operations for add_or_update_normal_file Tests

[Sushil2k4]

Description

This pull request implements mock file operations for the add_or_update_normal_file tests to simulate various file system behaviors. It allows the tests to verify the consistency and correctness of the normalStore under concurrent access without relying on the actual file system. This change addresses issue by enhancing the testing framework.

• Fixes #(11)

Type of change

• New feature (non-breaking change which adds functionality)
• Tests update

Checklist

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

[Kota-Karthik]

@Sushil2k4
please fix code which is breaking workflows
strictly follow the PR template
After you fix them i will review your PR
You can go through CONTRIBUTING.MD

[techy4shri]

Another instance of violation of rules and thus, this is your second warning. Another warning, and you will be banned from this repository for forever @Sushil2k4 . Kindly refrain from creating a pull request without going through the contribution guidelines, code of conduct and readme of the repoository.
Closing this due to violation of rules of the program and repository.