[FEAT] Project API Functionality Coverage

[becevka]

Summary
To improve stability of Project page backend API we should improve code coverage of Project API code.

Describe the solution you'd like
Review current use cases and custom code within Project API code and create tests to support use cases.

Acceptance criteria

Generated by Zenhub AI

• Scenario: Code coverage improvement for Project API functions
• Given the current Project API codebase
• When additional test cases are created to cover all possible use cases
• Then the code coverage should be improved, ensuring that all functions and edge cases are tested
• Scenario: Testing custom code within Project API
  • Given custom code has been implemented in the Project API
  • When tests are written to specifically target these custom implementations
  • Then the custom code should be thoroughly tested, ensuring its functionality and stability