def test_setup_databases(self):
"""
setup_databases() doesn't fail with dummy database backend.
"""
tested_connections = db.ConnectionHandler({})
with mock.patch('django.test.utils.connections', new=tested_connections):
runner_instance = DiscoverRunner(verbosity=0)
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
def test_empty_default_database(self):
"""
An empty default database in settings does not raise an ImproperlyConfigured
error when running a unit test that does not use a database.
"""
testcases.connections = db.ConnectionHandler({'default': {}})
connection = testcases.connections[db.utils.DEFAULT_DB_ALIAS]
self.assertEqual(connection.settings_dict['ENGINE'], 'django.db.backends.dummy')
connections_support_transactions()
def test_empty_default_database(self):
"""
An empty default database in settings does not raise an ImproperlyConfigured
error when running a unit test that does not use a database.
"""
tested_connections = db.ConnectionHandler({"default": {}})
with mock.patch("django.db.connections", new=tested_connections):
connection = tested_connections[db.utils.DEFAULT_DB_ALIAS]
self.assertEqual(connection.settings_dict["ENGINE"],
"django.db.backends.dummy")
connections_support_transactions()
def test_setup_aliased_default_database(self):
"""
setup_databases() doesn't fail when 'default' is aliased
"""
tested_connections = db.ConnectionHandler(
{"default": {"NAME": "dummy"}, "aliased": {"NAME": "dummy"}}
)
with mock.patch("django.test.utils.connections", new=tested_connections):
runner_instance = DiscoverRunner(verbosity=0)
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
def test_serialization(self):
serialize = []
DatabaseCreation.create_test_db = (
lambda *args, **kwargs: serialize.append(kwargs.get('serialize')))
db.connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.dummy',
},
})
self.runner_instance.setup_databases()
self.assertEqual(serialize, [True])
def setUp(self):
backend.NODE_STATE = backend.NodeState(dict())
self.connection = db.ConnectionHandler(
settings={
db.DEFAULT_DB_ALIAS: {
'ENGINE': 'galera.backends.readwritesplit',
'NODES': {
'db1': {},
'db2': {},
}
}
})[db.DEFAULT_DB_ALIAS]
def test_serialization(self):
tested_connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.dummy',
},
})
with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
with mock.patch('django.test.utils.connections', new=tested_connections):
self.runner_instance.setup_databases()
mocked_db_creation.return_value.create_test_db.assert_called_once_with(
verbosity=0, autoclobber=False, serialize=True, keepdb=False
)
def test_destroy_test_db_restores_db_name(self):
tested_connections = db.ConnectionHandler({
'default': {
'ENGINE': settings.DATABASES[db.DEFAULT_DB_ALIAS]["ENGINE"],
'NAME': 'xxx_test_database',
},
})
# Using the real current name as old_name to not mess with the test suite.
old_name = settings.DATABASES[db.DEFAULT_DB_ALIAS]["NAME"]
with mock.patch('django.db.connections', new=tested_connections):
tested_connections['default'].creation.destroy_test_db(old_name, verbosity=0, keepdb=True)
self.assertEqual(tested_connections['default'].settings_dict["NAME"], old_name)
def test_serialized_off(self):
tested_connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.dummy',
'TEST': {'SERIALIZE': False},
},
})
with mock.patch('django.db.backends.dummy.base.DatabaseCreation') as mocked_db_creation:
with mock.patch('django.test.runner.connections', new=tested_connections):
self.runner_instance.setup_databases()
mocked_db_creation.return_value.create_test_db.assert_called_once_with(
0, autoclobber=False, serialize=False, keepdb=False
)
def test_setup_databases(self):
"""
Test that setup_databases() doesn't fail with dummy database backend.
"""
tested_connections = db.ConnectionHandler({})
with mock.patch('django.test.runner.connections', new=tested_connections):
runner_instance = DiscoverRunner(verbosity=0)
try:
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
except Exception as e:
self.fail("setup_databases/teardown_databases unexpectedly raised "
"an error: %s" % e)
def test_setup_databases(self):
"""
Test that setup_databases() doesn't fail with dummy database backend.
"""
runner_instance = DiscoverRunner(verbosity=0)
old_db_connections = db.connections
try:
db.connections = db.ConnectionHandler({})
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
except Exception as e:
self.fail("setup_databases/teardown_databases unexpectedly raised "
"an error: %s" % e)
finally:
db.connections = old_db_connections
def test_setup_aliased_default_database(self):
"""
setup_databases() doesn't fail when 'default' is aliased
"""
tested_connections = db.ConnectionHandler({
'default': {
'NAME': 'dummy'
},
'aliased': {
'NAME': 'dummy'
}
})
with mock.patch('django.test.utils.connections', new=tested_connections):
runner_instance = DiscoverRunner(verbosity=0)
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
def test_setup_aliased_databases(self):
tested_connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.dummy',
'NAME': 'dbname',
},
'other': {
'ENGINE': 'django.db.backends.dummy',
'NAME': 'dbname',
}
})
with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
with mock.patch('django.test.utils.connections', new=tested_connections):
old_config = self.runner_instance.setup_databases()
self.runner_instance.teardown_databases(old_config)
mocked_db_creation.return_value.destroy_test_db.assert_called_once_with('dbname', 0, False)
def test_ticket_16885(self):
"""Features are also confirmed on mirrored databases."""
old_db_connections = db.connections
try:
db.connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.sqlite3',
},
'slave': {
'ENGINE': 'django.db.backends.sqlite3',
'TEST_MIRROR': 'default',
},
})
slave = db.connections['slave']
self.assertEqual(slave.features.supports_transactions, None)
DjangoTestSuiteRunner(verbosity=0).setup_databases()
self.assertNotEqual(slave.features.supports_transactions, None)
finally:
db.connections = old_db_connections
def test_serialized_off(self):
tested_connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.dummy',
'TEST': {'SERIALIZE': False},
},
})
msg = (
'The SERIALIZE test database setting is deprecated as it can be '
'inferred from the TestCase/TransactionTestCase.databases that '
'enable the serialized_rollback feature.'
)
with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
with mock.patch('django.test.utils.connections', new=tested_connections):
with self.assertWarnsMessage(RemovedInDjango50Warning, msg):
self.runner_instance.setup_databases()
mocked_db_creation.return_value.create_test_db.assert_called_once_with(
verbosity=0, autoclobber=False, serialize=False, keepdb=False
)
def test_transaction_support(self):
# Assert connections mocking is appropriately applied by preventing
# any attempts at calling create_test_db on the global connection
# objects.
for connection in db.connections.all():
create_test_db = mock.patch.object(
connection.creation,
"create_test_db",
side_effect=AssertionError(
"Global connection object shouldn't be manipulated."
),
)
create_test_db.start()
self.addCleanup(create_test_db.stop)
for option_key, option_value in (
("NAME", ":memory:"),
("TEST", {"NAME": ":memory:"}),
):
tested_connections = db.ConnectionHandler(
{
"default": {
"ENGINE": "django.db.backends.sqlite3",
option_key: option_value,
},
"other": {
"ENGINE": "django.db.backends.sqlite3",
option_key: option_value,
},
}
)
with mock.patch("django.test.utils.connections", new=tested_connections):
other = tested_connections["other"]
DiscoverRunner(verbosity=0).setup_databases()
msg = (
"DATABASES setting '%s' option set to sqlite3's ':memory:' value "
"shouldn't interfere with transaction support detection."
% option_key
)
# Transaction support is properly initialized for the 'other' DB.
self.assertTrue(other.features.supports_transactions, msg)
# And all the DBs report that they support transactions.
self.assertTrue(connections_support_transactions(), msg)
def test_setup_aliased_default_database(self):
"""
Test that setup_datebases() doesn't fail when 'default' is aliased
"""
tested_connections = db.ConnectionHandler({
'default': {
'NAME': 'dummy'
},
'aliased': {
'NAME': 'dummy'
}
})
with mock.patch('django.test.runner.connections', new=tested_connections):
runner_instance = DiscoverRunner(verbosity=0)
try:
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
except Exception as e:
self.fail("setup_databases/teardown_databases unexpectedly raised "
"an error: %s" % e)
def test_setup_aliased_databases(self):
tested_connections = db.ConnectionHandler({
"default": {
"ENGINE": "django.db.backends.dummy",
"NAME": "dbname",
},
"other": {
"ENGINE": "django.db.backends.dummy",
"NAME": "dbname",
},
})
with mock.patch(
"django.db.backends.dummy.base.DatabaseWrapper.creation_class"
) as mocked_db_creation:
with mock.patch("django.test.utils.connections",
new=tested_connections):
old_config = self.runner_instance.setup_databases()
self.runner_instance.teardown_databases(old_config)
mocked_db_creation.return_value.destroy_test_db.assert_called_once_with(
"dbname", 0, False)
def test_setup_aliased_default_database(self):
"""
Test that setup_datebases() doesn't fail when 'default' is aliased
"""
runner_instance = DiscoverRunner(verbosity=0)
old_db_connections = db.connections
try:
db.connections = db.ConnectionHandler({
'default': {
'NAME': 'dummy'
},
'aliased': {
'NAME': 'dummy'
}
})
old_config = runner_instance.setup_databases()
runner_instance.teardown_databases(old_config)
except Exception as e:
self.fail("setup_databases/teardown_databases unexpectedly raised "
"an error: %s" % e)
finally:
db.connections = old_db_connections
def test_setup_aliased_databases(self):
destroyed_names = []
DatabaseCreation.destroy_test_db = (
lambda self, old_database_name, verbosity=1, keepdb=False,
serialize=True: destroyed_names.append(old_database_name))
DatabaseCreation.create_test_db = (
lambda self, verbosity=1, autoclobber=False, keepdb=False,
serialize=True: self._get_test_db_name())
db.connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.dummy',
'NAME': 'dbname',
},
'other': {
'ENGINE': 'django.db.backends.dummy',
'NAME': 'dbname',
}
})
old_config = self.runner_instance.setup_databases()
self.runner_instance.teardown_databases(old_config)
self.assertEqual(destroyed_names.count('dbname'), 1)
def test_transaction_support(self):
"""Ticket #16329: sqlite3 in-memory test databases"""
old_db_connections = db.connections
for option in ('NAME', 'TEST_NAME'):
try:
db.connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.sqlite3',
option: ':memory:',
},
'other': {
'ENGINE': 'django.db.backends.sqlite3',
option: ':memory:',
},
})
other = db.connections['other']
runner.DiscoverRunner(verbosity=0).setup_databases()
msg = "DATABASES setting '%s' option set to sqlite3's ':memory:' value shouldn't interfere with transaction support detection." % option
# Transaction support should be properly initialised for the 'other' DB
self.assertTrue(other.features.supports_transactions, msg)
# And all the DBs should report that they support transactions
self.assertTrue(connections_support_transactions(), msg)
finally:
db.connections = old_db_connections
def test_transaction_support(self):
"""Ticket #16329: sqlite3 in-memory test databases"""
for option_key, option_value in (
('NAME', ':memory:'), ('TEST', {'NAME': ':memory:'})):
tested_connections = db.ConnectionHandler({
'default': {
'ENGINE': 'django.db.backends.sqlite3',
option_key: option_value,
},
'other': {
'ENGINE': 'django.db.backends.sqlite3',
option_key: option_value,
},
})
with mock.patch('django.db.connections', new=tested_connections):
with mock.patch('django.test.testcases.connections', new=tested_connections):
other = tested_connections['other']
DiscoverRunner(verbosity=0).setup_databases()
msg = ("DATABASES setting '%s' option set to sqlite3's ':memory:' value "
"shouldn't interfere with transaction support detection." % option_key)
# Transaction support should be properly initialized for the 'other' DB
self.assertTrue(other.features.supports_transactions, msg)
# And all the DBs should report that they support transactions
self.assertTrue(connections_support_transactions(), msg)
