relax config type check on JWT_*_TOKEN_EXPIRES

[abathur]

Instead of requiring JWT_ACCESS_TOKEN_EXPIRES and JWT_REFRESH_TOKEN_EXPIRES to
be of type datetime.timedelta or False, checks in config.py support any
value that can be successfully added to a datetime.datetime object.

Closes #214.

(I'm not well-configured to test this atm, so I'm relying on CI to slap me down if there's a problem here.)

[coveralls]

Coverage remained the same at 100.0% when pulling ef2ecbd on abathur:ducktype_expires into 3f37e1e on vimalloc:master.

[coveralls]

Coverage remained the same at 100.0% when pulling d632ad3 on abathur:ducktype_expires into 63075d3 on vimalloc:master.

[vimalloc]

Nice 👍 Could you add a unit test for the dateutil.relativedelta? You can include that package in the requirements.txt.

[abathur]

I was just about to ask; I wasn't sure if you'd want the extra dependency or not. :)

[vimalloc]

For sure, thanks for checking 👍 Having the extra development dependency doesn't bother me at all.

Thanks for contributing!

[vimalloc]

Oh, that reminds me. With the added requirement of the six package, could you also update the install requirements here (https://github.com/vimalloc/flask-jwt-extended/blob/master/setup.py#L31) to list six as well?

Cheers.

[vimalloc]

Whoops, I totally forgot that tox used it's own dependencies as well. Gotta love dependency management right?

If you add six and dateutils to the tox.ini I expect these tests should pass 👍

[vimalloc]

Actually, only dateutil. Six will be installed because it's part of the setup.py now 👍

[abathur]

I think I'm missing something about your test setup; dateutil imports were failing with dateutil in requirements.txt, but started working when I added it to deps in tox.ini.

edit: look what i get for posting without scrolling up :)

[vimalloc]

Yeah, the requirements.txt contains a bunch of additional stuff that isn't needed for unit tests (such as the code to generate documentation or push up new releases to PyPI). For the sake of speed, I have tox setup to only install the necessary requirements for running the unit tests instead of all the code in the requirements.txt.

Thanks for spending the time to put this together, it looks good 👍

[vimalloc]

This has been released in 3.18.0. Cheers.