Establish Comprehensive Test Coverage for Cron Job Analytics Purge Edge Cases

[temma02]

Description

Build comprehensive test coverage for the analytics purge cron job, verifying correct retention-window enforcement, batch deletion behavior, and handling of concurrent purge executions.

Requirements and Context

• Testing: Target apps/backend/src/app/api/cron/purge-analytics/route.ts
• Coverage: Cover retention window, batch deletion, and concurrency
• Documentation: Document the purge retention policy

Suggested Execution

Branch: test/issue-048-analytics-purge-cron-tests

Implement Changes

• Add tests verifying only data older than the retention window is purged
• Test batch deletion behavior for large datasets
• Assert that recent data within the retention window is never deleted
• Test concurrent purge execution safety

Test and Commit

• Cover retention boundary, batch deletion, and concurrency
• Assert data within retention is preserved
• Document the retention policy in route JSDoc

Example Commit Message

test(cron): add comprehensive coverage for analytics purge edge cases

- Verify retention window enforcement
- Test batch deletion for large datasets
- Assert concurrent purge execution safety

Guidelines

• Use fake timers to control the retention boundary
• Test the exact retention boundary (just inside vs just outside)
• Mock the database to verify deletion queries

[Fidelis900]

@Fidelis900 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

i would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Fidelis900 to this issue.

[drips-wave]

Congratulations, @Fidelis900! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

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