CONV-032: Test format normalization rules

[menvil]

Summary

• Add failing unit tests for FileFormat::normalize() (jpeg→jpg, uppercase, leading dot, unsupported format).
• Tests intentionally red — will be closed by CONV-033 next in sequence.

Test plan

• New tests fail as expected before CONV-033

---

Summary by cubic

Adds unit tests defining FileFormat::normalize() behavior. Covers jpeg→jpg, case insensitivity, stripping a leading dot, and rejecting unsupported formats. Also verifies enum values for png, jpg, webp, and pdf. Tests are red by design and will pass in CONV-033.

^{Written for commit 3974b57. Summary will update on new commits.}

Review in cubic

[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: 95bdbae6-ed9a-4aa2-b216-abf5cfbf911f

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-032-test-format-normalization-rules

---

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.}