test_class_decorators.py

# vim: set fileencoding=utf-8 :
"""
Unittest module of ...


AUTHOR:
    lambdalisue[Ali su ae] (lambdalisue@hashnote.net)
    
License:
    The MIT License (MIT)

    Copyright (c) 2012 Alisue allright reserved.

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to
    deal in the Software without restriction, including without limitation the
    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
    sell copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
    IN THE SOFTWARE.

"""
from __future__ import with_statement
from mock import MagicMock as Mock
from django.test import TestCase
from django.http import HttpResponse
from django.views.generic import View
from django.core.exceptions import PermissionDenied

from permission import registry
from permission.decorators.class_decorators import permission_required
from permission.tests.models import Article

class PermissionClassDecoratorsTestCase(TestCase):

    fixtures = ('django_permission_test_datas.yaml',)

    def setUp(self):
        mock_handler = Mock(**{
                'has_perm.return_value': False,
                'get_permissions.return_value': 'permission.add_article',
            })
        mock_request = Mock()
        mock_request.META = Mock()
        mock_request.user = Mock()
        mock_request.user.is_active.return_value = True
        mock_request.user.is_authenticated.return_value = True
        mock_request.user.has_perm.side_effect = mock_handler.has_perm

        self.mock_handler = mock_handler
        self.mock_request = mock_request

        # store original registry
        self._original_registry = registry._registry

        # clear registry and register mock handler
        registry._registry = {}
        registry.register(
                Article,
                Mock(return_value=self.mock_handler)
            )
        self.view_func = Mock(return_value=HttpResponse)
        view_class = type('MockView', (View,), {})
        view_class.dispatch = self.view_func
        view_class = permission_required('permission.add_article')(view_class)

        view_class_exc = type('MockView', (View,), {})
        view_class_exc.dispatch = self.view_func
        view_class_exc = \
            permission_required('permission.add_article',
                                raise_exception=True)(view_class_exc)

        self.view_class = view_class
        self.view_class_exc = view_class_exc

    def tearDown(self):
        # restore original reigstry
        registry._registry = self._original_registry

    def test_with_object(self):
        self.assertEqual(registry._registry[Article], self.mock_handler)

        self.view_class.object = Article.objects.get(pk=1)
        # has_perm always return False
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.assertFalse(self.view_func.called)

        self.view_class_exc.object = Article.objects.get(pk=1)
        self.assertRaises(PermissionDenied, self.view_class_exc.as_view(),
                          self.mock_request, pk=1)
        self.assertFalse(self.view_func.called)

        # has_perm always return True
        self.mock_handler.has_perm.return_value = True
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.assertTrue(self.view_func.called)
        del self.view_class.object

    def test_with_get_object(self):
        self.assertEqual(registry._registry[Article], self.mock_handler)

        self.view_class.get_object = Mock(return_value=Article.objects.get(pk=1))
        # has_perm always return False
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.view_class.get_object.assert_called_with(None)
        self.assertFalse(self.view_func.called)
        # has_perm always return True
        self.mock_handler.has_perm.return_value = True
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.assertTrue(self.view_func.called)
        del self.view_class.get_object

    def test_with_queryset(self):
        self.assertEqual(registry._registry[Article], self.mock_handler)

        self.view_class.queryset = "mock queryset"
        self.view_class.get_object = Mock(return_value=Article.objects.get(pk=1))
        # has_perm always return False
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.view_class.get_object.assert_called_with(
                "mock queryset",
            )
        self.assertFalse(self.view_func.called)
        # has_perm always return True
        self.mock_handler.has_perm.return_value = True
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.assertTrue(self.view_func.called)
        del self.view_class.get_object
        del self.view_class.queryset

    def test_with_get_queryset(self):
        self.assertEqual(registry._registry[Article], self.mock_handler)

        self.view_class.get_queryset = Mock(return_value="mock queryset")
        self.view_class.get_object = Mock(return_value=Article.objects.get(pk=1))
        # has_perm always return False
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.view_class.get_object.assert_called_with(
                "mock queryset",
            )
        self.assertFalse(self.view_func.called)
        # has_perm always return True
        self.mock_handler.has_perm.return_value = True
        self.view_class.as_view()(self.mock_request, pk=1)
        self.mock_request.user.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.mock_handler.has_perm.assert_called_with(
                'permission.add_article',
                obj=Article.objects.get(pk=1)
            )
        self.assertTrue(self.view_func.called)
        del self.view_class.get_object
        del self.view_class.get_queryset