[Backend] -- Add E2E API Tests

[Devsol-01]

Description

Create comprehensive end-to-end tests for all API endpoints.

Tasks

• Set up E2E test environment
• Write tests for auth endpoints
• Write tests for CRUD endpoints
• Test error scenarios
• Add test data fixtures
• Integrate with CI/CD
• Achieve 80%+ coverage

Acceptance Criteria

• All endpoints tested
• Error cases covered
• Tests run in CI
• 80%+ coverage achieved

[NnamdiCyber]

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

I’d like to work on this issue because it contributes to improving the project's functionality, reliability, and overall user experience. I enjoy working on open-source projects and collaborating with maintainers to deliver clean, maintainable solutions.

I have experience with software development across frontend, backend, testing, and debugging tasks. I’m comfortable working with existing codebases, following project guidelines, writing tests, and ensuring changes are well-documented. I can investigate the current implementation, propose a clear solution, and deliver a high-quality contribution that meets the acceptance criteria.

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

[dee-john]

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

Hi, I'd like to work on this issue! because I am very conversant with solving problems like this!

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