[Backend] Add Comprehensive Test Coverage for Authentication Services

[ayomideadeniran]

🚀 Feature Overview

Add unit and integration tests for auth flows and security features with edge case coverage.

This is an essential, MVP-critical feature designed to ensure authentication works correctly.

🛠️ Implementation Requirements

• Build comprehensive test coverage.
• Include comprehensive unit tests with coverage >90%.
• Add thorough documentation and educational comments.
• Integrate with existing CI infrastructure.

🔧 Technical Specifications

• Built with Node.js and Express.
• Use Jest for testing.
• Cover edge cases and security scenarios.
• Follow security best practices.

✅ Acceptance Criteria

• Test coverage meets requirements.
• Edge cases are covered.
• All tests pass consistently.
• Documentation is complete and educational.

🎓 Difficulty Level

Intermediate - Requires understanding of testing and Node.js development.

⏱️ Timeline

ETA: 1 day

[shoaib050326]

@shoaib050326 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi Maintainer, Can you pls assign this to me.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @shoaib050326 to this issue.

[Richardkingz2019]

@Richardkingz2019 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I would love to work on this issue and I shall deliver promptly on this with qualitaively feedback

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Richardkingz2019 to this issue.