from django.contrib.auth.models import User
from django.core.exceptions import ImproperlyConfigured
from django.test import override_settings

from .tests import AdminDocsTestCase, TestDataMixin


class XViewMiddlewareTest(TestDataMixin, AdminDocsTestCase):

    def test_xview_func(self):
        user = User.objects.get(username='super')
        response = self.client.head('/xview/func/')
        self.assertNotIn('X-View', response)
        self.client.force_login(self.superuser)
        response = self.client.head('/xview/func/')
        self.assertIn('X-View', response)
        self.assertEqual(response.headers['X-View'], 'admin_docs.views.xview')
        user.is_staff = False
        user.save()
        response = self.client.head('/xview/func/')
        self.assertNotIn('X-View', response)
        user.is_staff = True
        user.is_active = False
        user.save()
        response = self.client.head('/xview/func/')
        self.assertNotIn('X-View', response)

    def test_xview_class(self):
        user = User.objects.get(username='super')
        response = self.client.head('/xview/class/')
        self.assertNotIn('X-View', response)
        self.client.force_login(self.superuser)
        response = self.client.head('/xview/class/')
        self.assertIn('X-View', response)
        self.assertEqual(response.headers['X-View'], 'admin_docs.views.XViewClass')
        user.is_staff = False
        user.save()
        response = self.client.head('/xview/class/')
        self.assertNotIn('X-View', response)
        user.is_staff = True
        user.is_active = False
        user.save()
        response = self.client.head('/xview/class/')
        self.assertNotIn('X-View', response)

    def test_callable_object_view(self):
        self.client.force_login(self.superuser)
        response = self.client.head('/xview/callable_object/')
        self.assertEqual(response.headers['X-View'], 'admin_docs.views.XViewCallableObject')

    @override_settings(MIDDLEWARE=[])
    def test_no_auth_middleware(self):
        msg = (
            "The XView middleware requires authentication middleware to be "
            "installed. Edit your MIDDLEWARE setting to insert "
            "'django.contrib.auth.middleware.AuthenticationMiddleware'."
        )
        with self.assertRaisesMessage(ImproperlyConfigured, msg):
            self.client.head('/xview/func/')