Disabled management commands output with verbosity 0 in various tests.

tests/auth_tests/test_management.py

@@ -310,13 +310,12 @@ class CreatesuperuserManagementCommandTestCase(TestCase):
         self.assertFalse(u.has_usable_password())
 
     def test_email_in_username(self):
-        new_io = StringIO()
         call_command(
             "createsuperuser",
             interactive=False,
             username="joe+admin@somewhere.org",
             email="joe@somewhere.org",
-            stdout=new_io
+            verbosity=0,
         )
         u = User._default_manager.get(username="joe+admin@somewhere.org")
         self.assertEqual(u.email, 'joe@somewhere.org')

tests/migrate_signals/tests.py

@@ -1,5 +1,3 @@
-from io import StringIO
-
 from django.apps import apps
 from django.core import management
 from django.db import migrations
@@ -9,7 +7,7 @@ from django.test import TransactionTestCase, override_settings
 APP_CONFIG = apps.get_app_config('migrate_signals')
 SIGNAL_ARGS = ['app_config', 'verbosity', 'interactive', 'using', 'plan', 'apps']
 MIGRATE_DATABASE = 'default'
-MIGRATE_VERBOSITY = 1
+MIGRATE_VERBOSITY = 0
 MIGRATE_INTERACTIVE = False
 
 
@@ -71,7 +69,7 @@ class MigrateSignalTests(TransactionTestCase):
         post_migrate_receiver = Receiver(signals.post_migrate)
         management.call_command(
             'migrate', database=MIGRATE_DATABASE, verbosity=MIGRATE_VERBOSITY,
-            interactive=MIGRATE_INTERACTIVE, stdout=StringIO(),
+            interactive=MIGRATE_INTERACTIVE,
         )
 
         for receiver in [pre_migrate_receiver, post_migrate_receiver]:
@@ -92,10 +90,9 @@ class MigrateSignalTests(TransactionTestCase):
         """
         pre_migrate_receiver = Receiver(signals.pre_migrate)
         post_migrate_receiver = Receiver(signals.post_migrate)
-        stdout = StringIO()
         management.call_command(
             'migrate', database=MIGRATE_DATABASE, verbosity=MIGRATE_VERBOSITY,
-            interactive=MIGRATE_INTERACTIVE, stdout=stdout,
+            interactive=MIGRATE_INTERACTIVE,
         )
         for receiver in [pre_migrate_receiver, post_migrate_receiver]:
             args = receiver.call_args
@@ -119,7 +116,7 @@ class MigrateSignalTests(TransactionTestCase):
         post_migrate_receiver = Receiver(signals.post_migrate)
         management.call_command(
             'migrate', database=MIGRATE_DATABASE, verbosity=MIGRATE_VERBOSITY,
-            interactive=MIGRATE_INTERACTIVE, stdout=stdout,
+            interactive=MIGRATE_INTERACTIVE,
         )
         self.assertEqual(
             [model._meta.label for model in pre_migrate_receiver.call_args['apps'].get_models()],

tests/swappable_models/tests.py

@@ -1,5 +1,3 @@
-from io import StringIO
-
 from django.contrib.auth.models import Permission
 from django.contrib.contenttypes.models import ContentType
 from django.core import management
@@ -26,8 +24,7 @@ class SwappableModelTests(TestCase):
         ContentType.objects.filter(app_label='swappable_models').delete()
 
         # Re-run migrate. This will re-build the permissions and content types.
-        new_io = StringIO()
-        management.call_command('migrate', interactive=False, stdout=new_io)
+        management.call_command('migrate', interactive=False, verbosity=0)
 
         # Content types and permissions exist for the swapped model,
         # but not for the swappable model.