| from unittest import mock, skipUnless |
|
|
| from django.db import connection |
| from django.db.backends.mysql.features import DatabaseFeatures |
| from django.test import TestCase |
|
|
|
|
| @skipUnless(connection.vendor == "mysql", "MySQL tests") |
| class TestFeatures(TestCase): |
| def test_supports_transactions(self): |
| """ |
| All storage engines except MyISAM support transactions. |
| """ |
| del connection.features.supports_transactions |
| with mock.patch( |
| "django.db.connection.features._mysql_storage_engine", "InnoDB" |
| ): |
| self.assertTrue(connection.features.supports_transactions) |
| del connection.features.supports_transactions |
| with mock.patch( |
| "django.db.connection.features._mysql_storage_engine", "MyISAM" |
| ): |
| self.assertFalse(connection.features.supports_transactions) |
| del connection.features.supports_transactions |
|
|
| def test_skip_locked_no_wait(self): |
| with mock.MagicMock() as _connection: |
| _connection.mysql_version = (8, 0, 1) |
| _connection.mysql_is_mariadb = False |
| database_features = DatabaseFeatures(_connection) |
| self.assertTrue(database_features.has_select_for_update_skip_locked) |
| self.assertTrue(database_features.has_select_for_update_nowait) |
| with mock.MagicMock() as _connection: |
| _connection.mysql_version = (8, 0, 0) |
| _connection.mysql_is_mariadb = False |
| database_features = DatabaseFeatures(_connection) |
| self.assertFalse(database_features.has_select_for_update_skip_locked) |
| self.assertFalse(database_features.has_select_for_update_nowait) |
|
|
| def test_allows_auto_pk_0(self): |
| with mock.MagicMock() as _connection: |
| _connection.sql_mode = {"NO_AUTO_VALUE_ON_ZERO"} |
| database_features = DatabaseFeatures(_connection) |
| self.assertIs(database_features.allows_auto_pk_0, True) |
|
|
