Backport test case improvements

Add random primary key mixin. Split test case code into mixins.
Make the view test case and the API test cases part of the same
class hierachy. Update tests that failed due to the new import
locations.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/common/tests/base.py

@@ -1,30 +1,23 @@
 from __future__ import absolute_import, unicode_literals
 
-from django.conf.urls import url
-from django.contrib.auth import get_user_model
-from django.http import HttpResponse
-from django.template import Context, Template
 from django.test import TestCase
-from django.test.utils import ContextList
-from django.urls import clear_url_caches, reverse
 
 from django_downloadview import assert_download_response
 
+from acls.tests.mixins import ACLTestCaseMixin
 from permissions.classes import Permission
 from smart_settings.classes import Namespace
-from user_management.tests import (
-    TEST_ADMIN_PASSWORD, TEST_ADMIN_USERNAME, TEST_USER_USERNAME,
-    TEST_USER_PASSWORD
-)
+from user_management.tests.mixins import UserTestCaseMixin
 
-from .literals import TEST_VIEW_NAME, TEST_VIEW_URL
 from .mixins import (
-    ContentTypeCheckMixin, DatabaseConversionMixin, OpenFileCheckMixin,
-    TempfileCheckMixin, UserMixin
+    ClientMethodsTestCaseMixin, ContentTypeCheckTestCaseMixin,
+    DatabaseConversionMixin, OpenFileCheckTestCaseMixin,
+    RandomPrimaryKeyModelMonkeyPatchMixin, TempfileCheckTestCasekMixin,
+    TestViewTestCaseMixin
 )
 
 
-class BaseTestCase(DatabaseConversionMixin, UserMixin, ContentTypeCheckMixin, OpenFileCheckMixin, TempfileCheckMixin, TestCase):
+class BaseTestCase(RandomPrimaryKeyModelMonkeyPatchMixin, DatabaseConversionMixin, ACLTestCaseMixin, OpenFileCheckTestCaseMixin, TempfileCheckTestCasekMixin, TestCase):
     """
     This is the most basic test case class any test in the project should use.
     """
@@ -36,81 +29,9 @@ class BaseTestCase(DatabaseConversionMixin, UserMixin, ContentTypeCheckMixin, Op
         Permission.invalidate_cache()
 
 
-class GenericViewTestCase(BaseTestCase):
-    def setUp(self):
-        super(GenericViewTestCase, self).setUp()
-        self.has_test_view = False
-
-    def tearDown(self):
-        from mayan.urls import urlpatterns
-
-        self.client.logout()
-        if self.has_test_view:
-            urlpatterns.pop(0)
-        super(GenericViewTestCase, self).tearDown()
-
-    def add_test_view(self, test_object):
-        from mayan.urls import urlpatterns
-
-        def test_view(request):
-            template = Template('{{ object }}')
-            context = Context(
-                {'object': test_object, 'resolved_object': test_object}
-            )
-            return HttpResponse(template.render(context=context))
-
-        urlpatterns.insert(0, url(TEST_VIEW_URL, test_view, name=TEST_VIEW_NAME))
-        clear_url_caches()
-        self.has_test_view = True
-
-    def get_test_view(self):
-        response = self.get(TEST_VIEW_NAME)
-        if isinstance(response.context, ContextList):
-            # template widget rendering causes test client response to be
-            # ContextList rather than RequestContext. Typecast to dictionary
-            # before updating.
-            result = dict(response.context).copy()
-            result.update({'request': response.wsgi_request})
-            return Context(result)
-        else:
-            response.context.update({'request': response.wsgi_request})
-            return Context(response.context)
-
-    def get(self, viewname=None, path=None, *args, **kwargs):
-        data = kwargs.pop('data', {})
-        follow = kwargs.pop('follow', False)
-
-        if viewname:
-            path = reverse(viewname=viewname, *args, **kwargs)
-
-        return self.client.get(
-            path=path, data=data, follow=follow
-        )
-
-    def login(self, username, password):
-        logged_in = self.client.login(username=username, password=password)
-
-        user = get_user_model().objects.get(username=username)
-
-        self.assertTrue(logged_in)
-        self.assertTrue(user.is_authenticated)
-
-    def login_user(self):
-        self.login(username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD)
-
-    def login_admin_user(self):
-        self.login(username=TEST_ADMIN_USERNAME, password=TEST_ADMIN_PASSWORD)
-
-    def logout(self):
-        self.client.logout()
-
-    def post(self, viewname=None, path=None, *args, **kwargs):
-        data = kwargs.pop('data', {})
-        follow = kwargs.pop('follow', False)
-
-        if viewname:
-            path = reverse(viewname=viewname, *args, **kwargs)
-
-        return self.client.post(
-            path=path, data=data, follow=follow
-        )
+class GenericViewTestCase(ClientMethodsTestCaseMixin, ContentTypeCheckTestCaseMixin, TestViewTestCaseMixin, UserTestCaseMixin, BaseTestCase):
+    """
+    A generic view test case built on top of the base test case providing
+    a single, user customizable view to test object resolution and shorthand
+    HTTP method functions.
+    """