Improve teams test run times by skipping signals

TNL-3126

add **kwargs to skip_signal method

common/test/utils.py

@@ -96,3 +96,14 @@ class MockSignalHandlerMixin(object):
                 del kwargs['exclude_args']
             self.assertEqual(mock_args, args)
             self.assertEqual(mock_kwargs, dict(kwargs, signal=mock_signal))
+
+
+@contextmanager
+def skip_signal(signal, **kwargs):
+    """
+    ContextManager to skip a signal by disconnecting it, yielding,
+    and then reconnecting the signal.
+    """
+    signal.disconnect(**kwargs)
+    yield
+    signal.connect(**kwargs)

lms/djangoapps/teams/search_indexes.py

@@ -88,7 +88,7 @@ class CourseTeamIndexer(object):
         return settings.FEATURES.get(cls.ENABLE_SEARCH_KEY, False)
 
 
-@receiver(post_save, sender=CourseTeam)
+@receiver(post_save, sender=CourseTeam, dispatch_uid='teams.signals.course_team_post_save_callback')
 def course_team_post_save_callback(**kwargs):
     """
     Reindex object after save.

lms/djangoapps/teams/tests/test_views.py

@@ -4,21 +4,22 @@ import json
 import pytz
 from datetime import datetime
 from dateutil import parser
-
 import ddt
 
 from django.core.urlresolvers import reverse
 from django.conf import settings
+from django.db.models.signals import post_save
 from nose.plugins.attrib import attr
 from rest_framework.test import APITestCase, APIClient
 
 from courseware.tests.factories import StaffFactory
+from common.test.utils import skip_signal
 from student.tests.factories import UserFactory, AdminFactory, CourseEnrollmentFactory
 from student.models import CourseEnrollment
+from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory
 from .factories import CourseTeamFactory, LAST_ACTIVITY_AT
-from ..search_indexes import CourseTeamIndexer
-from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
+from ..search_indexes import CourseTeamIndexer, CourseTeam, course_team_post_save_callback
 
 from django_comment_common.models import Role, FORUM_ROLE_COMMUNITY_TA
 from django_comment_common.utils import seed_permissions_roles
@@ -194,32 +195,39 @@ class TeamAPITestCase(APITestCase, SharedModuleStoreTestCase):
             username='student_enrolled_other_course_not_on_team'
         )
 
-        # clear the teams search index before rebuilding teams
-        CourseTeamIndexer.engine().destroy()
-
-        # 'solar team' is intentionally lower case to test case insensitivity in name ordering
-        self.test_team_1 = CourseTeamFactory.create(
-            name=u'sólar team',
-            course_id=self.test_course_1.id,
-            topic_id='topic_0'
-        )
-        self.test_team_2 = CourseTeamFactory.create(name='Wind Team', course_id=self.test_course_1.id)
-        self.test_team_3 = CourseTeamFactory.create(name='Nuclear Team', course_id=self.test_course_1.id)
-        self.test_team_4 = CourseTeamFactory.create(name='Coal Team', course_id=self.test_course_1.id, is_active=False)
-        self.test_team_5 = CourseTeamFactory.create(name='Another Team', course_id=self.test_course_2.id)
-        self.test_team_6 = CourseTeamFactory.create(
-            name='Public Profile Team',
-            course_id=self.test_course_2.id,
-            topic_id='topic_6'
-        )
-        self.test_team_7 = CourseTeamFactory.create(
-            name='Search',
-            description='queryable text',
-            country='GS',
-            language='to',
-            course_id=self.test_course_2.id,
-            topic_id='topic_7'
-        )
+        with skip_signal(
+            post_save,
+            receiver=course_team_post_save_callback,
+            sender=CourseTeam,
+            dispatch_uid='teams.signals.course_team_post_save_callback'
+        ):
+            # 'solar team' is intentionally lower case to test case insensitivity in name ordering
+            self.test_team_1 = CourseTeamFactory.create(
+                name=u'sólar team',
+                course_id=self.test_course_1.id,
+                topic_id='topic_0'
+            )
+            self.test_team_2 = CourseTeamFactory.create(name='Wind Team', course_id=self.test_course_1.id)
+            self.test_team_3 = CourseTeamFactory.create(name='Nuclear Team', course_id=self.test_course_1.id)
+            self.test_team_4 = CourseTeamFactory.create(
+                name='Coal Team',
+                course_id=self.test_course_1.id,
+                is_active=False
+            )
+            self.test_team_5 = CourseTeamFactory.create(name='Another Team', course_id=self.test_course_2.id)
+            self.test_team_6 = CourseTeamFactory.create(
+                name='Public Profile Team',
+                course_id=self.test_course_2.id,
+                topic_id='topic_6'
+            )
+            self.test_team_7 = CourseTeamFactory.create(
+                name='Search',
+                description='queryable text',
+                country='GS',
+                language='to',
+                course_id=self.test_course_2.id,
+                topic_id='topic_7'
+            )
 
         self.test_team_name_id_map = {team.name: team for team in (
             self.test_team_1,
@@ -227,6 +235,8 @@ class TeamAPITestCase(APITestCase, SharedModuleStoreTestCase):
             self.test_team_3,
             self.test_team_4,
             self.test_team_5,
+            self.test_team_6,
+            self.test_team_7,
         )}
 
         for user, course in [('staff', self.test_course_1), ('course_staff', self.test_course_1)]:
@@ -455,9 +465,15 @@ class TestListTeamsAPI(TeamAPITestCase):
         # Make "solar team" the most recently active team.
         # The CourseTeamFactory sets the last_activity_at to a fixed time (in the past), so all of the
         # other teams have the same last_activity_at.
-        solar_team = self.test_team_name_id_map[u'sólar team']
-        solar_team.last_activity_at = datetime.utcnow().replace(tzinfo=pytz.utc)
-        solar_team.save()
+        with skip_signal(
+            post_save,
+            receiver=course_team_post_save_callback,
+            sender=CourseTeam,
+            dispatch_uid='teams.signals.course_team_post_save_callback'
+        ):
+            solar_team = self.test_team_name_id_map[u'sólar team']
+            solar_team.last_activity_at = datetime.utcnow().replace(tzinfo=pytz.utc)
+            solar_team.save()
 
         data = {'order_by': field} if field else {}
         self.verify_names(data, status, names)
@@ -508,6 +524,12 @@ class TestListTeamsAPI(TeamAPITestCase):
     )
     @ddt.unpack
     def test_text_search(self, text_search, expected_team_names):
+        # clear out the teams search index before reindexing
+        CourseTeamIndexer.engine().destroy()
+
+        for team in self.test_team_name_id_map.values():
+            CourseTeamIndexer.index(team)
+
         self.verify_names(
             {'course_id': self.test_course_2.id, 'text_search': text_search},
             200,
@@ -797,13 +819,19 @@ class TestListTopicsAPI(TeamAPITestCase):
     )
     @ddt.unpack
     def test_order_by(self, field, status, names, expected_ordering):
-        # Add 2 teams to "Nuclear Power", which previously had no teams.
-        CourseTeamFactory.create(
-            name=u'Nuclear Team 1', course_id=self.test_course_1.id, topic_id='topic_2'
-        )
-        CourseTeamFactory.create(
-            name=u'Nuclear Team 2', course_id=self.test_course_1.id, topic_id='topic_2'
-        )
+        with skip_signal(
+            post_save,
+            receiver=course_team_post_save_callback,
+            sender=CourseTeam,
+            dispatch_uid='teams.signals.course_team_post_save_callback'
+        ):
+            # Add 2 teams to "Nuclear Power", which previously had no teams.
+            CourseTeamFactory.create(
+                name=u'Nuclear Team 1', course_id=self.test_course_1.id, topic_id='topic_2'
+            )
+            CourseTeamFactory.create(
+                name=u'Nuclear Team 2', course_id=self.test_course_1.id, topic_id='topic_2'
+            )
         data = {'course_id': self.test_course_1.id}
         if field:
             data['order_by'] = field
@@ -817,13 +845,19 @@ class TestListTopicsAPI(TeamAPITestCase):
         Ensure that the secondary sort (alphabetical) when primary sort is team_count
         works across pagination boundaries.
         """
-        # Add 2 teams to "Wind Power", which previously had no teams.
-        CourseTeamFactory.create(
-            name=u'Wind Team 1', course_id=self.test_course_1.id, topic_id='topic_1'
-        )
-        CourseTeamFactory.create(
-            name=u'Wind Team 2', course_id=self.test_course_1.id, topic_id='topic_1'
-        )
+        with skip_signal(
+            post_save,
+            receiver=course_team_post_save_callback,
+            sender=CourseTeam,
+            dispatch_uid='teams.signals.course_team_post_save_callback'
+        ):
+            # Add 2 teams to "Wind Power", which previously had no teams.
+            CourseTeamFactory.create(
+                name=u'Wind Team 1', course_id=self.test_course_1.id, topic_id='topic_1'
+            )
+            CourseTeamFactory.create(
+                name=u'Wind Team 2', course_id=self.test_course_1.id, topic_id='topic_1'
+            )
 
         topics = self.get_topics_list(data={
             'course_id': self.test_course_1.id,