Make test helpers properly inheritable/extendable

The helpers.TestCase classes didn't call their superclass' methods
in their setUp and tearDown methods, which made it impossible to
probperly inherit from them and use mixins with them.

I split the code that was differing for them into separate methods,
removed common code and made them use super() correctly.

Due to some inspect magic, the factory creation has to be duplicated.

Change-Id: I0bf909b1e4324c1e36bcdb83daece391bd0cfae7

horizon/test/helpers.py

@@ -118,18 +118,32 @@ class TestCase(django_test.TestCase):
       * A ready-to-go request object via ``self.request``.
     """
     def setUp(self):
+        super(TestCase, self).setUp()
         self.mox = mox.Mox()
-        self.factory = RequestFactoryWithMessages()
-        self.user = User.objects.create_user(username='test', password='test')
-        self.assertTrue(self.client.login(username="test", password="test"))
-
-        self.request = http.HttpRequest()
-        self.request.session = self.client._session()
+        self._setup_test_data()
+        self._setup_factory()
+        self._setup_user()
+        self._setup_request()
         middleware.HorizonMiddleware().process_request(self.request)
         AuthenticationMiddleware().process_request(self.request)
         os.environ["HORIZON_TEST_RUN"] = "True"
 
+    def _setup_test_data(self):
+        pass
+
+    def _setup_factory(self):
+        self.factory = RequestFactoryWithMessages()
+
+    def _setup_user(self):
+        self.user = User.objects.create_user(username='test', password='test')
+        self.assertTrue(self.client.login(username="test", password="test"))
+
+    def _setup_request(self):
+        self.request = http.HttpRequest()
+        self.request.session = self.client._session()
+
     def tearDown(self):
+        super(TestCase, self).tearDown()
         self.mox.UnsetStubs()
         self.mox.VerifyAll()
         del os.environ["HORIZON_TEST_RUN"]

openstack_dashboard/test/helpers.py

@@ -24,11 +24,9 @@ import os
 from ceilometerclient.v2 import client as ceilometer_client
 from cinderclient import client as cinder_client
 from django.conf import settings
-from django.contrib.auth.middleware import AuthenticationMiddleware  # noqa
 from django.contrib.messages.storage import default_storage  # noqa
 from django.core.handlers import wsgi
 from django.core import urlresolvers
-from django import http
 from django.test.client import RequestFactory  # noqa
 from django.test import utils as django_test_utils
 from django.utils.importlib import import_module  # noqa
@@ -49,7 +47,6 @@ from troveclient import client as trove_client
 
 from horizon import base
 from horizon import conf
-from horizon import middleware
 from horizon.test import helpers as horizon_helpers
 from openstack_dashboard import api
 from openstack_dashboard import context_processors
@@ -151,11 +148,6 @@ class TestCase(horizon_helpers.TestCase):
       * Several handy additional assertion methods.
     """
     def setUp(self):
-        test_utils.load_test_data(self)
-        self.mox = mox.Mox()
-        self.factory = RequestFactoryWithMessages()
-        self.context = {'authorized_tenants': self.tenants.list()}
-
         def fake_conn_request(*args, **kwargs):
             raise Exception("An external URI request tried to escape through "
                             "an httplib2 client. Args: %s, kwargs: %s"
@@ -167,6 +159,21 @@ class TestCase(horizon_helpers.TestCase):
         self._real_context_processor = context_processors.openstack
         context_processors.openstack = lambda request: self.context
 
+        self.patchers = {}
+        self.add_panel_mocks()
+
+        super(TestCase, self).setUp()
+
+    def _setup_test_data(self):
+        super(TestCase, self)._setup_test_data()
+        test_utils.load_test_data(self)
+        self.context = {'authorized_tenants': self.tenants.list()}
+
+    def _setup_factory(self):
+        # For some magical reason we need a copy of this here.
+        self.factory = RequestFactoryWithMessages()
+
+    def _setup_user(self):
         self._real_get_user = utils.get_user
         tenants = self.context['authorized_tenants']
         self.setActiveUser(id=self.user.id,
@@ -176,14 +183,10 @@ class TestCase(horizon_helpers.TestCase):
                            tenant_id=self.tenant.id,
                            service_catalog=self.service_catalog,
                            authorized_tenants=tenants)
-        self.request = http.HttpRequest()
-        self.request.session = self.client._session()
+
+    def _setup_request(self):
+        super(TestCase, self)._setup_request()
         self.request.session['token'] = self.token.id
-        middleware.HorizonMiddleware().process_request(self.request)
-        AuthenticationMiddleware().process_request(self.request)
-        self.patchers = {}
-        self.add_panel_mocks()
-        os.environ["HORIZON_TEST_RUN"] = "True"
 
     def add_panel_mocks(self):
         """Global mocks on panels that get called on all views."""
@@ -194,13 +197,11 @@ class TestCase(horizon_helpers.TestCase):
         self.patchers['aggregates'].start()
 
     def tearDown(self):
-        self.mox.UnsetStubs()
         httplib2.Http._conn_request = self._real_conn_request
         context_processors.openstack = self._real_context_processor
         utils.get_user = self._real_get_user
         mock.patch.stopall()
-        self.mox.VerifyAll()
-        del os.environ["HORIZON_TEST_RUN"]
+        super(TestCase, self).tearDown()
 
     def setActiveUser(self, id=None, token=None, username=None, tenant_id=None,
                       service_catalog=None, tenant_name=None, roles=None,