implement tag validation functionality and tests

[ak-massa]

What?

In our project, a lot of people work on one shared documentation and we used a predefined set of tags that are allowed to be put on pages. For this, it would be nice to have a functionality that fails the build if tags outside of the predefined set of allowed tags are used.

How?

implementation works so far, however the negative test cases only pass if they are run individually...

pytest test/test_validation_tags.py::test_allowed_tag_names_regex_error 
pytest test/test_validation_tags.py::test_minimum_error 
pytest test/test_validation_tags.py::test_maximum_error 

...but not when run with pytest.

FAILED test/test_validation_tags.py::test_allowed_tag_names_regex_error - Failed: DID NOT RAISE <class 'sphinx.errors.ExtensionError'>
FAILED test/test_validation_tags.py::test_minimum_error - Failed: DID NOT RAISE <class 'sphinx.errors.ExtensionError'>
FAILED test/test_validation_tags.py::test_maximum_error - Failed: DID NOT RAISE <class 'sphinx.errors.ExtensionError'>

behavior appears on python v3.12.9. JetBrains Rider 2024.3 pytest testrunner shows the same behavior.

I can't for the life of me figure out why that is (or how to adapt the negative cases to use either status.getValue() or the TagLinks.validate() method directly, similar to the test_empty_taglinks test in test_general_tags). Maybe one of you is smarter than me and knows what my mistake is. 😬

[ak-massa]

Hi @melissawm, any chance you can take a look? 👀