Add __eq__ method for permissions.OperandHolder class

[janlis-ff]

The reason behind this proposal is to fully enable permission_classes comparison, e.g. in tests:

# myapp/views.py

from rest_framework.views import APIView
from rest_framework.permissions import IsAdminUser
from myapp.permissions import MyPermission


class MyView(APIView):
    permission_classes = [MyPermission | IsAdminUser]
    # ...

# myapp/tests/views/test_my_view.py

from myapp.views import MyView
from rest_framework.permissions import IsAdminUser
from myapp.permissions import MyPermission


def test__permission_classes():
    cls = MyView
    assert cls.permission_classes == [MyPermission | IsAdminUser]

I'd love to submit an actual test, but being a first-time contributor here I'm not sure where and how exactly would it fit in just by looking at tests/test_permissions.py.

Have a nice day!

[tomchristie]

🤷‍♂️. Okay.

[djowett]

Just a passing note while reviewing an upgrade: should this not also be added to SingleOperandHolder?