CONV-268: Test duplicate credit pack purchase is ignored

[menvil]

Summary

• Adds two failing idempotency tests to CreditPackWebhookHandlerTest:
  1. Same event ID called twice → credits granted once only
  2. Same checkout session ID, different event IDs → credits granted once only
• Tests fail with double balance (1050 instead of 550) — intentional, implementation in CONV-269

Test plan

• Tests confirmed failing before implementation
• composer lint passes

🤖 Generated with Claude Code

---

Summary by cubic

Adds two tests for CreditPackWebhookHandler to ensure duplicate Stripe credit pack purchases don’t grant credits twice (CONV-268).

Covers both same event ID replays and the same checkout session with different event IDs.

^{Written for commit b24a652. Summary will update on new commits.}

[coderabbitai]

Important

Review skipped

Auto reviews are limited based on label configuration.

🏷️ Required labels (at least one) (1)

• release

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 474cbcb7-e27b-46ff-99ca-51f3f29343dc

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/CONV-268-test-duplicate-credit-pack-purchase-is-ignored

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}