diff --git a/analytics/tests/test_counts.py b/analytics/tests/test_counts.py
index 36666ed844..2b27c087cd 100644
--- a/analytics/tests/test_counts.py
+++ b/analytics/tests/test_counts.py
@@ -37,6 +37,7 @@ class AnalyticsTestCase(TestCase):
     TIME_LAST_HOUR = TIME_ZERO - HOUR
 
     def setUp(self) -> None:
+        super().setUp()
         self.default_realm = Realm.objects.create(
             string_id='realmtest', name='Realm Test', date_created=self.TIME_ZERO - 2*self.DAY)
         # used to generate unique names in self.create_*
diff --git a/analytics/tests/test_views.py b/analytics/tests/test_views.py
index 14917877f2..03568bf133 100644
--- a/analytics/tests/test_views.py
+++ b/analytics/tests/test_views.py
@@ -69,6 +69,7 @@ class TestStatsEndpoint(ZulipTestCase):
 
 class TestGetChartData(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.realm = get_realm('zulip')
         self.user = self.example_user('hamlet')
         self.login(self.user.email)
diff --git a/corporate/tests/test_stripe.py b/corporate/tests/test_stripe.py
index 93f7bada14..43766dd836 100644
--- a/corporate/tests/test_stripe.py
+++ b/corporate/tests/test_stripe.py
@@ -213,6 +213,7 @@ class Kandra(object):  # nocoverage: TODO
 
 class StripeTestCase(ZulipTestCase):
     def setUp(self, *mocks: Mock) -> None:
+        super().setUp()
         # This test suite is not robust to users being added in populate_db. The following
         # hack ensures get_seat_count is fixed, even as populate_db changes.
         realm = get_realm('zulip')
@@ -963,6 +964,7 @@ class StripeTest(StripeTestCase):
 
 class RequiresBillingAccessTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         hamlet = self.example_user("hamlet")
         hamlet.is_billing_admin = True
         hamlet.save(update_fields=["is_billing_admin"])
diff --git a/zerver/lib/test_classes.py b/zerver/lib/test_classes.py
index 4a13db327f..1940b67cc1 100644
--- a/zerver/lib/test_classes.py
+++ b/zerver/lib/test_classes.py
@@ -797,6 +797,7 @@ class WebhookTestCase(ZulipTestCase):
         return get_user(self.TEST_USER_EMAIL, get_realm("zulip"))
 
     def setUp(self) -> None:
+        super().setUp()
         self.url = self.build_webhook_url()
 
     def api_stream_message(self, email: str, *args: Any, **kwargs: Any) -> HttpResponse:
diff --git a/zerver/tests/test_attachments.py b/zerver/tests/test_attachments.py
index 022292cbf7..ac19bde7ca 100644
--- a/zerver/tests/test_attachments.py
+++ b/zerver/tests/test_attachments.py
@@ -11,6 +11,7 @@ from zerver.models import Attachment
 
 class AttachmentsTests(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         user_profile = self.example_user('cordelia')
         self.attachment = Attachment.objects.create(
             file_name='test.txt', path_id='foo/bar/test.txt', owner=user_profile)
diff --git a/zerver/tests/test_auth_backends.py b/zerver/tests/test_auth_backends.py
index 786f89351e..43d3c48905 100644
--- a/zerver/tests/test_auth_backends.py
+++ b/zerver/tests/test_auth_backends.py
@@ -475,6 +475,7 @@ class SocialAuthBase(ZulipTestCase):
     __unittest_skip__ = True
 
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
         self.name = self.user_profile.full_name
@@ -1647,6 +1648,7 @@ class GoogleAuthBackendTest(SocialAuthBase):
 
 class JSONFetchAPIKeyTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
 
@@ -1673,6 +1675,7 @@ class JSONFetchAPIKeyTest(ZulipTestCase):
 
 class FetchAPIKeyTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
 
@@ -1726,6 +1729,7 @@ class FetchAPIKeyTest(ZulipTestCase):
 
 class DevFetchAPIKeyTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
 
diff --git a/zerver/tests/test_bugdown.py b/zerver/tests/test_bugdown.py
index fc99338502..2924de5613 100644
--- a/zerver/tests/test_bugdown.py
+++ b/zerver/tests/test_bugdown.py
@@ -250,6 +250,7 @@ class BugdownMiscTest(ZulipTestCase):
 
 class BugdownTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         bugdown.clear_state_for_testing()
 
     def assertEqual(self, first: Any, second: Any, msg: str = "") -> None:
diff --git a/zerver/tests/test_create_video_call.py b/zerver/tests/test_create_video_call.py
index df1cb8a1ab..8cbf59e7d2 100644
--- a/zerver/tests/test_create_video_call.py
+++ b/zerver/tests/test_create_video_call.py
@@ -5,6 +5,7 @@ from typing import Dict
 
 class TestFeedbackBot(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         user_profile = self.example_user('hamlet')
         self.login(user_profile.email, realm=user_profile.realm)
 
diff --git a/zerver/tests/test_custom_profile_data.py b/zerver/tests/test_custom_profile_data.py
index 2a83af2c13..d2015d48b0 100644
--- a/zerver/tests/test_custom_profile_data.py
+++ b/zerver/tests/test_custom_profile_data.py
@@ -16,6 +16,7 @@ import mock
 
 class CustomProfileFieldTestCase(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.realm = get_realm("zulip")
         self.original_count = len(custom_profile_fields_for_realm(self.realm.id))
 
diff --git a/zerver/tests/test_decorators.py b/zerver/tests/test_decorators.py
index bfe4711890..f4641c3ce4 100644
--- a/zerver/tests/test_decorators.py
+++ b/zerver/tests/test_decorators.py
@@ -1264,6 +1264,7 @@ class InactiveUserTest(ZulipTestCase):
 
 class TestIncomingWebhookBot(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         zulip_realm = get_realm('zulip')
         self.webhook_bot = get_user('webhook-bot@zulip.com', zulip_realm)
 
@@ -1281,6 +1282,7 @@ class TestIncomingWebhookBot(ZulipTestCase):
 
 class TestValidateApiKey(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         zulip_realm = get_realm('zulip')
         self.webhook_bot = get_user('webhook-bot@zulip.com', zulip_realm)
         self.default_bot = get_user('default-bot@zulip.com', zulip_realm)
diff --git a/zerver/tests/test_docs.py b/zerver/tests/test_docs.py
index 1d4c843e88..a7ef5a2ff3 100644
--- a/zerver/tests/test_docs.py
+++ b/zerver/tests/test_docs.py
@@ -333,6 +333,7 @@ class AboutPageTest(ZulipTestCase):
         would not have the `static/generated/github-contributors.json` fixture
         file.
         """
+        super().setUp()
         # This block has unreliable test coverage due to the implicit
         # caching here, so we exclude it from coverage.
         if not os.path.exists(static_path('generated/github-contributors.json')):
diff --git a/zerver/tests/test_embedded_bot_system.py b/zerver/tests/test_embedded_bot_system.py
index d0164e7404..a144f0415f 100644
--- a/zerver/tests/test_embedded_bot_system.py
+++ b/zerver/tests/test_embedded_bot_system.py
@@ -13,6 +13,7 @@ import ujson
 
 class TestEmbeddedBotMessaging(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user("othello")
         self.bot_profile = self.create_test_bot('embedded', self.user_profile,
                                                 full_name='Embedded bot',
diff --git a/zerver/tests/test_events.py b/zerver/tests/test_events.py
index f667e1cade..df600a1df4 100644
--- a/zerver/tests/test_events.py
+++ b/zerver/tests/test_events.py
@@ -3512,6 +3512,7 @@ class FetchQueriesTest(ZulipTestCase):
 
 class TestEventsRegisterAllPublicStreamsDefaults(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
 
@@ -3553,6 +3554,7 @@ class TestEventsRegisterAllPublicStreamsDefaults(ZulipTestCase):
 
 class TestEventsRegisterNarrowDefaults(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
         self.stream = get_stream('Verona', self.user_profile.realm)
diff --git a/zerver/tests/test_external.py b/zerver/tests/test_external.py
index 94a500892a..3a2933ad9a 100644
--- a/zerver/tests/test_external.py
+++ b/zerver/tests/test_external.py
@@ -48,6 +48,7 @@ class MITNameTest(ZulipTestCase):
 class RateLimitTests(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         settings.RATE_LIMITING = True
         add_ratelimit_rule(1, 5)
 
diff --git a/zerver/tests/test_hotspots.py b/zerver/tests/test_hotspots.py
index de97e71a2b..326b6dc16f 100644
--- a/zerver/tests/test_hotspots.py
+++ b/zerver/tests/test_hotspots.py
@@ -11,6 +11,7 @@ import ujson
 # complicated hotspots logic.
 class TestGetNextHotspots(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user = do_create_user(
             'user@zulip.com', 'password', get_realm('zulip'), 'user', 'user')
 
diff --git a/zerver/tests/test_import_export.py b/zerver/tests/test_import_export.py
index 86ff9a9d10..9a2038a5e4 100644
--- a/zerver/tests/test_import_export.py
+++ b/zerver/tests/test_import_export.py
@@ -220,6 +220,7 @@ class QueryUtilTest(ZulipTestCase):
 class ImportExportTest(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.rm_tree(settings.LOCAL_UPLOADS_DIR)
 
     def _make_output_dir(self) -> str:
diff --git a/zerver/tests/test_logging_handlers.py b/zerver/tests/test_logging_handlers.py
index d3029ad1b6..83e45d0a8b 100644
--- a/zerver/tests/test_logging_handlers.py
+++ b/zerver/tests/test_logging_handlers.py
@@ -39,6 +39,7 @@ class AdminNotifyHandlerTest(ZulipTestCase):
     logger = logging.getLogger('django')
 
     def setUp(self) -> None:
+        super().setUp()
         self.handler = AdminNotifyHandler()
         # Prevent the exceptions we're going to raise from being printed
         # You may want to disable this when debugging tests
diff --git a/zerver/tests/test_management_commands.py b/zerver/tests/test_management_commands.py
index 6dd415b272..74e88f5349 100644
--- a/zerver/tests/test_management_commands.py
+++ b/zerver/tests/test_management_commands.py
@@ -39,6 +39,7 @@ class TestCheckConfig(ZulipTestCase):
 
 class TestZulipBaseCommand(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.zulip_realm = get_realm("zulip")
         self.command = ZulipBaseCommand()
 
@@ -162,6 +163,7 @@ class TestZulipBaseCommand(ZulipTestCase):
 class TestCommandsCanStart(TestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.commands = filter(
             lambda filename: filename != '__init__',
             map(
@@ -185,6 +187,7 @@ class TestSendWebhookFixtureMessage(TestCase):
     COMMAND_NAME = 'send_webhook_fixture_message'
 
     def setUp(self) -> None:
+        super().setUp()
         self.fixture_path = os.path.join('some', 'fake', 'path.json')
         self.url = '/some/url/with/hook'
 
diff --git a/zerver/tests/test_narrow.py b/zerver/tests/test_narrow.py
index c85a4c512d..b2601a8aa2 100644
--- a/zerver/tests/test_narrow.py
+++ b/zerver/tests/test_narrow.py
@@ -85,6 +85,7 @@ def first_visible_id_as(message_id: int) -> Any:
 
 class NarrowBuilderTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.realm = get_realm('zulip')
         self.user_profile = self.example_user('hamlet')
         self.builder = NarrowBuilder(self.user_profile, column('id'))
diff --git a/zerver/tests/test_new_users.py b/zerver/tests/test_new_users.py
index 1dff7dcd0b..dd76c550af 100644
--- a/zerver/tests/test_new_users.py
+++ b/zerver/tests/test_new_users.py
@@ -111,6 +111,7 @@ class SendLoginEmailTest(ZulipTestCase):
 class TestBrowserAndOsUserAgentStrings(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.user_agents = [
             ('mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) ' +
                 'Chrome/54.0.2840.59 Safari/537.36', 'Chrome', 'Linux',),
diff --git a/zerver/tests/test_outgoing_webhook_interfaces.py b/zerver/tests/test_outgoing_webhook_interfaces.py
index 33e0289dcc..afd2d173f3 100644
--- a/zerver/tests/test_outgoing_webhook_interfaces.py
+++ b/zerver/tests/test_outgoing_webhook_interfaces.py
@@ -16,6 +16,7 @@ from zerver.models import get_realm, get_user, SLACK_INTERFACE
 class TestGenericOutgoingWebhookService(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.event = {
             u'command': '@**test**',
             u'message': {
@@ -98,6 +99,7 @@ class TestGenericOutgoingWebhookService(ZulipTestCase):
 class TestSlackOutgoingWebhookService(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.stream_message_event = {
             u'command': '@**test**',
             u'user_profile_id': 12,
diff --git a/zerver/tests/test_outgoing_webhook_system.py b/zerver/tests/test_outgoing_webhook_system.py
index fd8f46ef1a..b91e377844 100644
--- a/zerver/tests/test_outgoing_webhook_system.py
+++ b/zerver/tests/test_outgoing_webhook_system.py
@@ -38,6 +38,7 @@ service_handler = GenericOutgoingWebhookService(None, None, None)
 
 class DoRestCallTests(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         realm = get_realm("zulip")
         user_profile = get_user("outgoing-webhook@zulip.com", realm)
         self.mock_event = {
@@ -139,6 +140,7 @@ I'm a generic exception :(
 
 class TestOutgoingWebhookMessaging(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user("othello")
         self.bot_profile = self.create_test_bot('outgoing-webhook', self.user_profile,
                                                 full_name='Outgoing Webhook bot',
diff --git a/zerver/tests/test_push_notifications.py b/zerver/tests/test_push_notifications.py
index de32f86743..912f8d7af3 100644
--- a/zerver/tests/test_push_notifications.py
+++ b/zerver/tests/test_push_notifications.py
@@ -1720,6 +1720,7 @@ class TestClearOnRead(ZulipTestCase):
 
 class TestReceivesNotificationsFunctions(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user = self.example_user('cordelia')
 
     def test_receivers_online_notifications_when_user_is_a_bot(self) -> None:
diff --git a/zerver/tests/test_reactions.py b/zerver/tests/test_reactions.py
index e72f830b02..6ce946e3c5 100644
--- a/zerver/tests/test_reactions.py
+++ b/zerver/tests/test_reactions.py
@@ -383,6 +383,7 @@ class EmojiReactionBase(ZulipTestCase):
 
 class DefaultEmojiReactionTests(EmojiReactionBase):
     def setUp(self) -> None:
+        super().setUp()
         self.reaction_type = 'unicode_emoji'
         reaction_info = {
             'emoji_name': 'hamburger',
@@ -620,6 +621,7 @@ class ZulipExtraEmojiReactionTest(EmojiReactionBase):
 
 class RealmEmojiReactionTests(EmojiReactionBase):
     def setUp(self) -> None:
+        super().setUp()
         green_tick_emoji = RealmEmoji.objects.get(name="green_tick")
         self.default_reaction_info = {
             'emoji_name': 'green_tick',
diff --git a/zerver/tests/test_realm.py b/zerver/tests/test_realm.py
index 49aec48a9a..fca71673ff 100644
--- a/zerver/tests/test_realm.py
+++ b/zerver/tests/test_realm.py
@@ -542,6 +542,7 @@ class RealmTest(ZulipTestCase):
 class RealmAPITest(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         user_profile = self.example_user('cordelia')
         email = user_profile.email
         self.login(email)
diff --git a/zerver/tests/test_retention.py b/zerver/tests/test_retention.py
index 5fae403712..c9dcdae5e8 100644
--- a/zerver/tests/test_retention.py
+++ b/zerver/tests/test_retention.py
@@ -72,6 +72,7 @@ class RetentionTestingBase(ZulipTestCase):
 
 class ArchiveMessagesTestingBase(RetentionTestingBase):
     def setUp(self) -> None:
+        super().setUp()
         self.zulip_realm = get_realm('zulip')
         self.mit_realm = get_realm('zephyr')
         self._set_realm_message_retention_value(self.zulip_realm, ZULIP_REALM_DAYS)
@@ -471,6 +472,7 @@ class TestArchivingReactions(ArchiveMessagesTestingBase, EmojiReactionBase):
 
 class MoveMessageToArchiveBase(RetentionTestingBase):
     def setUp(self) -> None:
+        super().setUp()
         self.sender = 'hamlet@zulip.com'
         self.recipient = 'cordelia@zulip.com'
 
diff --git a/zerver/tests/test_service_bot_system.py b/zerver/tests/test_service_bot_system.py
index 4aa56824ce..6202f276cc 100644
--- a/zerver/tests/test_service_bot_system.py
+++ b/zerver/tests/test_service_bot_system.py
@@ -170,6 +170,7 @@ class TestServiceBotBasics(ZulipTestCase):
 
 class TestServiceBotStateHandler(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user("othello")
         self.bot_profile = do_create_user(email="embedded-bot-1@zulip.com",
                                           password="test",
@@ -350,6 +351,7 @@ class TestServiceBotStateHandler(ZulipTestCase):
 
 class TestServiceBotConfigHandler(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user("othello")
         self.bot_profile = self.create_test_bot('embedded', self.user_profile,
                                                 full_name='Embedded bot',
@@ -406,6 +408,7 @@ class TestServiceBotConfigHandler(ZulipTestCase):
 class TestServiceBotEventTriggers(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user("othello")
         self.bot_profile = do_create_user(email="foo-bot@zulip.com",
                                           password="test",
diff --git a/zerver/tests/test_signup.py b/zerver/tests/test_signup.py
index ae467e8fa2..203d7b9d98 100644
--- a/zerver/tests/test_signup.py
+++ b/zerver/tests/test_signup.py
@@ -1451,6 +1451,7 @@ class InvitationsTestCase(InviteUserBase):
 
 class InviteeEmailsParserTests(TestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.email1 = "email1@zulip.com"
         self.email2 = "email2@zulip.com"
         self.email3 = "email3@zulip.com"
@@ -1477,6 +1478,7 @@ class InviteeEmailsParserTests(TestCase):
 
 class MultiuseInviteTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.realm = get_realm('zulip')
         self.realm.invite_required = True
         self.realm.save()
diff --git a/zerver/tests/test_subs.py b/zerver/tests/test_subs.py
index 22c66c76d7..3281c311b0 100644
--- a/zerver/tests/test_subs.py
+++ b/zerver/tests/test_subs.py
@@ -1985,6 +1985,7 @@ class SubscriptionAPITest(ZulipTestCase):
         All tests will be logged in as hamlet. Also save various useful values
         as attributes that tests can access.
         """
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.test_email = self.user_profile.email
         self.test_user = self.user_profile
@@ -3298,6 +3299,7 @@ class GetPublicStreamsTest(ZulipTestCase):
 
 class StreamIdTest(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
         self.login(self.email)
@@ -3406,6 +3408,7 @@ class InviteOnlyStreamTest(ZulipTestCase):
 class GetSubscribersTest(ZulipTestCase):
 
     def setUp(self) -> None:
+        super().setUp()
         self.user_profile = self.example_user('hamlet')
         self.email = self.user_profile.email
         self.login(self.email)
diff --git a/zerver/tests/test_tutorial.py b/zerver/tests/test_tutorial.py
index 03604322f8..347aa768ef 100644
--- a/zerver/tests/test_tutorial.py
+++ b/zerver/tests/test_tutorial.py
@@ -10,6 +10,7 @@ import ujson
 
 class TutorialTests(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         # This emulates the welcome message sent by the welcome bot to hamlet@zulip.com
         # This is only a quick fix - ideally, we would have this message sent by the initialization
         # code in populate_db.py
diff --git a/zerver/tests/test_unread.py b/zerver/tests/test_unread.py
index 73d26d5f2c..8624bde78a 100644
--- a/zerver/tests/test_unread.py
+++ b/zerver/tests/test_unread.py
@@ -205,6 +205,7 @@ class PointerTest(ZulipTestCase):
 
 class UnreadCountTests(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         with mock.patch('zerver.lib.push_notifications.push_notifications_enabled',
                         return_value = True) as mock_push_notifications_enabled:
             self.unread_msg_ids = [
diff --git a/zerver/tests/test_upload.py b/zerver/tests/test_upload.py
index fbd9e8626e..f10c707926 100644
--- a/zerver/tests/test_upload.py
+++ b/zerver/tests/test_upload.py
@@ -1809,6 +1809,7 @@ class SanitizeNameTests(TestCase):
 
 class UploadSpaceTests(UploadSerializeMixin, ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.realm = get_realm("zulip")
         self.user_profile = self.example_user('hamlet')
 
@@ -1878,6 +1879,7 @@ class ExifRotateTests(TestCase):
 
 class DecompressionBombTests(ZulipTestCase):
     def setUp(self) -> None:
+        super().setUp()
         self.test_urls = {
             "/json/users/me/avatar": "Image size exceeds limit.",
             "/json/realm/logo": "Image size exceeds limit.",
diff --git a/zerver/webhooks/taiga/tests.py b/zerver/webhooks/taiga/tests.py
index 8e61ca2709..f987927d67 100644
--- a/zerver/webhooks/taiga/tests.py
+++ b/zerver/webhooks/taiga/tests.py
@@ -8,6 +8,7 @@ class TaigaHookTests(WebhookTestCase):
     FIXTURE_DIR_NAME = 'taiga'
 
     def setUp(self) -> None:
+        super().setUp()
         self.url = self.build_webhook_url(topic=self.TOPIC)
 
     def test_taiga_userstory_deleted(self) -> None: