Mentorship-backend: Tests: Add tests for User file

[devkapilbansal]

Description

Coverage ensures that the code we have in our project is tested and working fine. But app/api/dao/user.py has least coverage percentage, i.e. 85% till now dropping overall coverage to 93 %

We need to ensure that code changes done are covered by test cases correctly.

Acceptance Criteria

Update [Required]

• [ ] Ensure all cases are covered and get 100% on codecov for this particular file.
  See codecov reports here

Enhancement to Update [Optional]

• [ ] Find other test cases that can be helpful to cover to ensure app is working fine.

Definition of Done

• [ ] All of the required items are completed.
• [ ] Approval by 1 mentor.

Estimation

5 hours

[17sushmita]

May I work on this issue?

[epicadk]

Good luck 😄 @17sushmita .