Fix failing test with Flask 2.2

[anthonyroussel]

Fixes:

• 531

• https://github.com/NixOS/nixpkgs/pull/190680

Compiling flask-wtf with the current version of flask v2.2.2 breaks the test suite. The faulty test is test_set_default_message_language.

Looks like it is caused by a change in Flask 2.2:

• https://github.com/pallets/flask/pull/4577

A resolution is to move the client.post code in the test after the controller code.

Works & tested with Flask 2.1 & 2.2.

Checklist:

• [ ] Add tests that demonstrate the correct behavior of the change. Tests should fail without the change.
• [ ] Add or update relevant docs, in the docs folder and in code.
• [ ] Add an entry in docs/changes.rst summarizing the change and linking to the issue. Add .. versionchanged:: entries in any relevant code docs.

[davidism]

The changelog isn't needed, it doesn't describe a user-facing change.

[anthonyroussel]

The changelog isn't needed, it doesn't describe a user-facing change.

Thanks for the review.

I removed the line I had added in the changelog.

[azmeuk]

I pushed the same patch on the repository. Sorry I did not see this one before.