feat: Adding SESSION_COOKIE_PARTITIONED

[Josecespedesant]

This pull request is related to Add support for partitioned session cookies

fixes #5472

Regarding the commit Adding code to handle SESSION_COOKIE_SECURE I see that in the test_basic.py in line 20 is using import flask, I believe this is the reason I got this error as it's using the package installed via pip install flask and not the code contained in /src/flask/

E       AssertionError: assert 'partitioned' in 'session=eyj0zxn0aw5nijo0mn0.zmzhyw.hgj68cffl4hz1avfswp08uya5ya; domain=example.com; secure; path=/; samesite=lax'

I'd like to learn if I'm doing something wrong with this to correct it and modify the PR

• [x] Test case modified for the behavior of the change
• [x] Updated relevant docs, based on the appearances of SESSION_COOKIE_SECURE
• [x] Added entry to CHANGES.rst

[davidism]

I believe this is the reason I got this error as it's using the package installed via pip install flask and not the code contained in /src/flask/

I'm not sure what you mean here. You should follow our contributing guide to set up your development environment. It instructs you to do pip install -e . during the setup. You can also run tox to set up test envs for you. The failure does not appear to be related.

[Josecespedesant]

Hello, thank you for your response, I went ahead and applied changes without taking a look at the contribution guide, I just went through it and will make the process correctly, my apologies.

[davidism]

So the immediate reason this wouldn't work is because it needs to depend on Werkzeug 3.1, which is not yet released. But after that, you didn't actually use the get_cookie_partitioned method to pass the parameter to set_cookie. I've corrected that, and will merge this once Werkzeug 3.1 is available.