import unittest from unittest import mock from django.core.checks import Tags, run_checks from django.core.checks.registry import CheckRegistry from django.db import connection from django.test import TestCase class DatabaseCheckTests(TestCase): multi_db = True @property def func(self): from django.core.checks.database import check_database_backends return check_database_backends def test_database_checks_not_run_by_default(self): """ `database` checks are only run when their tag is specified. """ def f1(**kwargs): return [5] registry = CheckRegistry() registry.register(Tags.database)(f1) errors = registry.run_checks() self.assertEqual(errors, []) errors2 = registry.run_checks(tags=[Tags.database]) self.assertEqual(errors2, [5]) def test_database_checks_called(self): with mock.patch('django.db.backends.base.validation.BaseDatabaseValidation.check') as mocked_check: run_checks(tags=[Tags.database]) self.assertTrue(mocked_check.called) @unittest.skipUnless(connection.vendor == 'mysql', 'Test only for MySQL') def test_mysql_strict_mode(self): good_sql_modes = [ 'STRICT_TRANS_TABLES,STRICT_ALL_TABLES', 'STRICT_TRANS_TABLES', 'STRICT_ALL_TABLES', ] for response in good_sql_modes: with mock.patch( 'django.db.backends.utils.CursorWrapper.fetchone', create=True, return_value=(response,) ): self.assertEqual(self.func(None), []) bad_sql_modes = ['', 'WHATEVER'] for response in bad_sql_modes: with mock.patch( 'django.db.backends.utils.CursorWrapper.fetchone', create=True, return_value=(response,) ): # One warning for each database alias result = self.func(None) self.assertEqual(len(result), 2) self.assertEqual([r.id for r in result], ['mysql.W002', 'mysql.W002'])