Hw1: add FastAPI for interacting with mail client, plus adapter to act like a mail client... version 2

[austinhuang0131]

Pull Request

Summary

Adapt hw1 code, actually call it an adapter as assignment indicated, fix tests, and make CircleCI pass.

Related Issues

• Supersedes Hw1: add FastAPI for interacting with mail client #2 .

Change Type

• 🐛 Bug fix
• ✨ Feature / enhancement
• 💥 Breaking change
• 📚 Documentation
• 🔧 Refactor / cleanup
• ⚡ Performance
• 🧪 Test improvement
• 🔨 Build / tooling

Impacted Areas

• mail_client_api
• gmail_client_impl
• Documentation
• Tests
• Tooling / CI
• Other (describe in summary)

Testing

Commands executed

# Example (edit as needed)
uv run pytest src/ tests/
uv run mypy src tests
uv run ruff check .

Results

• Tests pass
• Type checks clean
• Linting clean
• Manual verification (if applicable)

Quality Checklist

• Contract boundaries respected; abstractions unchanged unless noted
• Backward compatibility confirmed or migration documented
• Security / secrets handled correctly
• Performance impact acceptable
• Docs updated for user-facing changes

Notes for Reviewers

[adithyab-20]

I wouldn't say this is the best way to do this -- you're coupling application code with test code. I would recommend removing test_client.py and using MagicMock to create a mock client in your unit tests instead.

[austinhuang0131]

I wouldn't either but I have not found a way to patch it then run with uvicorn in the integration test (which is not supposed to be with production credentials) so unfortunately that's the current compromise. Maybe I'll look into it further later on.

[adithyab-20]

Overall, nice work! Your peers gave you good feedback and you've made the right changes. The structure of your components is spot on. Your service is now correct as well (needs some minor fixes). Your adapter correctly implements the mail_client_api.Client interface which calls methods on the autogenerated client internally. Well done!