Fix test suite under Sphinx 7.4+

[yut23]

The source of this issue is sphinx-doc/sphinx#12492, which changed how directive content gets parsed. Previously, it went through SphinxDirective.state.nested_parse() which MockState implements as a no-op, so content was never used.

Closes #987.

[AA-Turner]

@yut23 thanks for the PR Eric, would you be able to update it to ignore the Docutils warnings?

A

[AA-Turner]

    def update(app: Sphinx, source_file: str | os.PathLike[str]) -> None:
E   TypeError: unsupported operand type(s) for |: 'type' and 'types.GenericAlias'

Could you add a from __future__ import annotations import?

[yut23]

I was going to fix all the linter errors in another PR, and only touch the tests here.

[AA-Turner]

This is a test error in Python 3.9

[yut23]

Fair enough, should be fixed now.

[AA-Turner]

Thanks Eric!

A