Add unit tests for all services current coverage is below 50% for most modules

[nanaf6203-bit]

Problem

Several modules have zero test files: search (9 services), notifications, dashboard, neighborhoods, open-house, backup. Others have minimal coverage.

Expected Outcome

All services have unit tests with at least 70% line coverage.

Acceptance Criteria

• Each service has a corresponding .spec.ts file
• Tests cover success paths, error paths, edge cases
• Mocked PrismaService with proper return types

Files Affected

New spec files for untested services, jest.config.js

Difficulty

Medium

Estimated Effort

Large (ongoing)

Labels

testing, quality, tech-debt

[nuhumusamagaji]

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

Hello Maintainer, I carefully investigated the issue and have identified the relevant areas for modification. I'll validate the implementation thoroughly before submission.

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

[Maryermarh]

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

I would like to work on this issue, assign please

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

[drips-wave]

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

🧑‍💻 @Maryermarh: 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 🌊