      url(
          r'^basic/$',
          MockView.as_view(authentication_classes=[BasicAuthentication])
      ),
      url(
          r'^remote-user/$',
          MockView.as_view(authentication_classes=[RemoteUserAuthentication])
      ),
      url(
          r'^token/$',
          MockView.as_view(authentication_classes=[TokenAuthentication])
 
</s> remove     url(
        r'^token/$',
 </s> add     path(
        'token/', </s> remove     url(
        r'^basic/$',
 </s> add     path(
        'basic/', </s> remove     url(
        r'^customtoken/$',
 </s> add     path(
        'customtoken/', </s> remove     url(
        r'^session/$',
 </s> add     path(
        'session/', </s> remove     url(
        r'^customkeywordtoken/$',
 </s> add     path(
        'customkeywordtoken/',
    path(
        'remote-user/',
      url(
          r'^basic/$',
          MockView.as_view(authentication_classes=[BasicAuthentication])
      ),
    path(
        'remote-user/',
    path(
        'remote-user/',
          MockView.as_view(authentication_classes=[RemoteUserAuthentication])
      ),
      url(
          r'^token/$',
          MockView.as_view(authentication_classes=[TokenAuthentication])
keep keep keep keep replace replace keep keep keep keep keep
 Replace all url() calls with path() or re_path() (#7512)

* url() is deprecated in Django 3.1

* update given feedbacks on url() is deprecated in Django 3.1

* Fix test_urlpatterns.py to continue testing mixed re_path() and path()

* Fix one missed reference

Co-authored-by: sanjusci <sanju.sci9@gmail.com> 
tests/authentication/test_authentication.py