Write unit tests for Sep10Service refresh token rotation

[JSE19]

Description: Sep10Service.rotateRefreshToken handles refresh token rotation with family revocation. This is a critical security feature preventing token reuse attacks. There are no unit tests for this flow.
Acceptance Criteria:

• Write unit test for successful refresh token rotation
• Write unit test for reused refresh token → revoke family and throw
• Write unit test for expired refresh token → UnauthorizedException
• Write unit test for invalid refresh token hash → UnauthorizedException
• Write unit test for revokeTokenFamily revokes all user tokens

[onuibeblessing2019-hash]

@onuibeblessing2019-hash has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, my name is onuibeblessing2019-hash, and I am a fullstack and smart contract developer skilled in React, Next.js, JavaScript, TypeScript, Tailwind CSS, and Soroban. For this task, I will:

1. Implement unit tests verifying successful refresh token rotation alongside proper error handling for expired tokens and invalid token hashes, ensuring they accurately throw an UnauthorizedException.
2. Write test cases to simulate token reuse attacks, validating that presenting a previously used refresh token successfully triggers the security mechanism to revoke the entire token family.
3. Develop tests specifically targeting the revokeTokenFamily method to ensure it completely and effectively invalidates all active tokens associated with the user in the database.
4. Execute the complete Jest unit test suite using robust repository mocks to achieve comprehensive code coverage and verify the integrity of the token rotation security flow.

ETA: 10 hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @onuibeblessing2019-hash to this issue.

[Ryjen1]

@Ryjen1 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Ryjen1 to this issue.

[Mendes472]

@Mendes472 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Can i work on this?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Mendes472 to this issue.

[akprinciple]

@akprinciple has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hi! I can work on this issue.

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

[drips-wave]

Congratulations, @IbrahimIjai! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @IbrahimIjai: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[StephenMero]

@StephenMero has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Good day maintainer, I’ve reviewed this issue and I’ll appreciate the opportunity to work on this issue

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