Add coverage tests for issue 698

[karurukaruru]

Linked issue

• See Python: Improve test coverage in 5 places for production code #698

Description

Adds focused tests for five uncovered paths involving unknown-property representation, category hashing and representation, invalid calendar dates, and invalid jCal weekday values. No production code is changed.

I used OpenAI Codex (GPT-5.6) to help identify uncovered paths, understand the relevant code, review the tests, and verify formatting, tests, and coverage.

Checklist

• I added a change log entry, following the instructions in Change log entry format.
• I followed icalendar's Artificial intelligence policy and disclosed my Responsible AI use in my commit messages, if applicable.
• I added or updated tests, if applicable.
• I ran and ensured all tests pass locally by following Run tests.
• I added or edited documentation as necessary, both as docstrings to be rendered in the API documentation and narrative documentation, following the Style guide.

[github-actions]

This pull request did not pass quality checks and AI use is suspected. Please review Contribute and make any necessary amendments.

[github-actions]

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GitHub user: karurukaruru
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        name: カルル
        twitter: https://x.com/djkaruru
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[github-actions]

This pull request did not pass quality checks and AI use is suspected. Please review Contribute and make any necessary amendments.

[read-the-docs-community]

Documentation build overview

📚 icalendar | 🛠️ Build #33973084 | 📁 Comparing 89756ff against latest (f8d109c)

  🔍 Preview build  

45 files changed · + 1 added · ± 44 modified

+ Added

• contribute/join-the-icalendar-team.html

± Modified

• 404.html
• genindex.html
• contribute/code-of-conduct.html
• contribute/development.html
• how-to/parse-errors.html
• _modules/icalendar/alarms.html
• _modules/icalendar/error.html
• contribute/documentation/style-guide.html
• reference/api/icalendar.cal.component.html
• reference/api/icalendar.cal.event.html
• and 34 more...

[karurukaruru]

Hello, thank you for reviewing my first PR.
I created this GitHub account four days ago. The bot may have marked my PR because this account is new.
I am not a native English speaker. I started learning Python again about one month ago. I used OpenAI Codex (GPT-5.6) to help me understand the project, review the tests, write English, and read the test results.
I added tests for five places that did not have tests before. I did not change the project code. I only added tests. I checked the changes and I can explain them.
Could you please review my PR? Thank you very much.

[stevepiercy]

Thank you for your first contribution! The work LGTM.

Let's get a technical review. There may be a preferred way to organize the tests in existing test files or parametrize them.

[SashankBhamidi]

Thanks for the contribution, and welcome. I ran all five tests and they pass.

One thing to address inline.

[SashankBhamidi]

The tests should be split into their natural homes rather than collected in a new file.

• test_vunknown_repr belongs in src/icalendar/tests/test_issue_1445.py, that's where all vUnknown tests live.
• test_vcategory_hash and test_vcategory_repr belong in src/icalendar/tests/prop/test_unit.py alongside the existing vCategory tests at line 335.
• test_vweekday_rejects_invalid_jcal_value belongs in src/icalendar/tests/prop/test_vWeekday.py.
• test_vdate_rejects_invalid_calendar_date belongs in src/icalendar/tests/prop/test_date_and_time.py.

Once you've moved them, this new file can be deleted.

[karurukaruru]

Thank you very much for the detailed guidance. I have moved each test to the existing test file you suggested and removed src/icalendar/tests/prop/test_issue_698_more_coverage.py. I also ran the five affected tests and the Ruff lint and formatting checks, and they pass. I appreciate your help in showing me the project's preferred test organization.

[niccokunzmann]

Thanks for your PR. I will wait for Sashank to have a look again.