feat(tests): Implement Unit Tests for /signup Route

[benoit-bremaud]

Summary

This pull request implements unit tests for the /signup route in the HappiHub application. These tests are designed to ensure that the user registration process works correctly and securely, including the proper handling and hashing of passwords.

Context

Issue #219 identified the need for comprehensive unit tests to validate the /signup route. These tests are crucial for verifying the functionality and security of the registration process, ensuring that user inputs are correctly validated and that sensitive data, such as passwords, are securely hashed before storage.

Changes Made

• Added unit tests to check the following:
  • User input validation for required fields (name, email, password).
  • Password hashing before saving to the database.
  • Response structure and status code verification.

Implementation Details

• The tests use Jest as the testing framework and include mock data and functions to simulate the registration process.
• The tests verify that passwords are not stored in plain text and that the registration endpoint responds with the correct status and data format.

Related Issue

This pull request closes Issue #219.

Verification

• The tests have been run locally, and all test cases pass successfully.
• The code has been reviewed and adheres to the project's coding standards and best practices.

References

• Issue #219: Implement User Registration Tests
• Documentation: Jest Documentation

Checklist

• [x] I have added tests that prove my fix is effective or that my feature works.
• [x] I have documented my code thoroughly.
• [x] All new and existing tests passed.
• [x] I have updated the documentation where necessary.