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import copy
from unittest import mock
from django.db import DEFAULT_DB_ALIAS, connection, connections
from django.db.backends.base.creation import (
TEST_DATABASE_PREFIX, BaseDatabaseCreation,
)
from django.test import SimpleTestCase
class TestDbSignatureTests(SimpleTestCase):
def get_connection_copy(self):
# Get a copy of the default connection. (Can't use django.db.connection
# because it'll modify the default connection itself.)
test_connection = copy.copy(connections[DEFAULT_DB_ALIAS])
test_connection.settings_dict = copy.copy(connections[DEFAULT_DB_ALIAS].settings_dict)
return test_connection
def test_default_name(self):
# A test db name isn't set.
prod_name = 'hodor'
test_connection = self.get_connection_copy()
test_connection.settings_dict['NAME'] = prod_name
test_connection.settings_dict['TEST'] = {'NAME': None}
signature = BaseDatabaseCreation(test_connection).test_db_signature()
self.assertEqual(signature[3], TEST_DATABASE_PREFIX + prod_name)
def test_custom_test_name(self):
# A regular test db name is set.
test_name = 'hodor'
test_connection = self.get_connection_copy()
test_connection.settings_dict['TEST'] = {'NAME': test_name}
signature = BaseDatabaseCreation(test_connection).test_db_signature()
self.assertEqual(signature[3], test_name)
def test_custom_test_name_with_test_prefix(self):
# A test db name prefixed with TEST_DATABASE_PREFIX is set.
test_name = TEST_DATABASE_PREFIX + 'hodor'
test_connection = self.get_connection_copy()
test_connection.settings_dict['TEST'] = {'NAME': test_name}
signature = BaseDatabaseCreation(test_connection).test_db_signature()
self.assertEqual(signature[3], test_name)
@mock.patch.object(connection, 'ensure_connection')
@mock.patch('django.core.management.commands.migrate.Command.handle', return_value=None)
class TestDbCreationTests(SimpleTestCase):
def test_migrate_test_setting_false(self, mocked_migrate, mocked_ensure_connection):
creation = connection.creation_class(connection)
saved_settings = copy.deepcopy(connection.settings_dict)
try:
connection.settings_dict['TEST']['MIGRATE'] = False
with mock.patch.object(creation, '_create_test_db'):
creation.create_test_db(verbosity=0, autoclobber=True, serialize=False)
mocked_migrate.assert_not_called()
finally:
connection.settings_dict = saved_settings
def test_migrate_test_setting_true(self, mocked_migrate, mocked_ensure_connection):
creation = connection.creation_class(connection)
saved_settings = copy.deepcopy(connection.settings_dict)
try:
connection.settings_dict['TEST']['MIGRATE'] = True
with mock.patch.object(creation, '_create_test_db'):
creation.create_test_db(verbosity=0, autoclobber=True, serialize=False)
mocked_migrate.assert_called_once()
finally:
connection.settings_dict = saved_settings
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