[Storage] Write Unit Tests for Storage Module

[Eniola3321]

Create unit tests covering all storage operations.

Acceptance Criteria
Test getters
Test setters
Test updates
Test deletions
Achieve >90% coverage

[Olasunkanmi975]

@Olasunkanmi975 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I want to work on this issue because it sits at the intersection of logic and reliability

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Olasunkanmi975 to this issue.

[Abdulmajeed82]

@Abdulmajeed82 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 @Abdulmajeed82 to this issue.

[drips-wave]

Congratulations, @Abdulmajeed82! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @Abdulmajeed82: 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 🌊