1
0
mirror of https://github.com/django/django.git synced 2024-12-23 09:36:06 +00:00
django/tests/test_utils/test_transactiontestcase.py
Matthijs Kooijman 2a2ea4ee18 Refs #31117 -- Made various tests properly handle unexpected databases aliases.
- Used selected "databases" instead of django.db.connections.
- Made routers in tests.migrations skip migrations on unexpected
  databases.
- Added DiscoverRunnerGetDatabasesTests.assertSkippedDatabases() hook
  which properly asserts messages about skipped databases.
2020-01-20 14:39:02 +01:00

63 lines
2.1 KiB
Python

from unittest import mock
from django.db import connections
from django.test import TestCase, TransactionTestCase, override_settings
from .models import Car
class TestSerializedRollbackInhibitsPostMigrate(TransactionTestCase):
"""
TransactionTestCase._fixture_teardown() inhibits the post_migrate signal
for test classes with serialized_rollback=True.
"""
available_apps = ['test_utils']
serialized_rollback = True
def setUp(self):
# self.available_apps must be None to test the serialized_rollback
# condition.
self.available_apps = None
def tearDown(self):
self.available_apps = ['test_utils']
@mock.patch('django.test.testcases.call_command')
def test(self, call_command):
# with a mocked call_command(), this doesn't have any effect.
self._fixture_teardown()
call_command.assert_called_with(
'flush', interactive=False, allow_cascade=False,
reset_sequences=False, inhibit_post_migrate=True,
database='default', verbosity=0,
)
@override_settings(DEBUG=True) # Enable query logging for test_queries_cleared
class TransactionTestCaseDatabasesTests(TestCase):
available_apps = []
databases = {'default', 'other'}
def test_queries_cleared(self):
"""
TransactionTestCase._pre_setup() clears the connections' queries_log
so that it's less likely to overflow. An overflow causes
assertNumQueries() to fail.
"""
for alias in self.databases:
self.assertEqual(len(connections[alias].queries_log), 0, 'Failed for alias %s' % alias)
class DisallowedDatabaseQueriesTests(TransactionTestCase):
available_apps = ['test_utils']
def test_disallowed_database_queries(self):
message = (
"Database queries to 'other' are not allowed in this test. "
"Add 'other' to test_utils.test_transactiontestcase."
"DisallowedDatabaseQueriesTests.databases to ensure proper test "
"isolation and silence this failure."
)
with self.assertRaisesMessage(AssertionError, message):
Car.objects.using('other').get()