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65 lines
2.6 KiB
Python
65 lines
2.6 KiB
Python
import unittest
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from django.core.exceptions import ImproperlyConfigured
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from django.db import connection
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from django.test import TestCase, override_settings
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@override_settings(DEBUG=True)
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@unittest.skipUnless(connection.vendor == 'mysql', 'MySQL specific test.')
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class MySQLTests(TestCase):
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@staticmethod
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def get_isolation_level(connection):
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with connection.cursor() as cursor:
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cursor.execute("SELECT @@session.tx_isolation")
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return cursor.fetchone()[0]
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def test_auto_is_null_auto_config(self):
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query = 'set sql_auto_is_null = 0'
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connection.init_connection_state()
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last_query = connection.queries[-1]['sql'].lower()
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if connection.features.is_sql_auto_is_null_enabled:
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self.assertIn(query, last_query)
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else:
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self.assertNotIn(query, last_query)
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def test_connect_isolation_level(self):
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read_committed = 'read committed'
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repeatable_read = 'repeatable read'
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isolation_values = {
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level: level.replace(' ', '-').upper()
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for level in (read_committed, repeatable_read)
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}
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configured_level = connection.isolation_level or isolation_values[repeatable_read]
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configured_level = configured_level.upper()
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other_level = read_committed if configured_level != isolation_values[read_committed] else repeatable_read
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self.assertEqual(self.get_isolation_level(connection), configured_level)
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new_connection = connection.copy()
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new_connection.settings_dict['OPTIONS']['isolation_level'] = other_level
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try:
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self.assertEqual(self.get_isolation_level(new_connection), isolation_values[other_level])
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finally:
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new_connection.close()
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# Upper case values are also accepted in 'isolation_level'.
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new_connection = connection.copy()
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new_connection.settings_dict['OPTIONS']['isolation_level'] = other_level.upper()
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try:
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self.assertEqual(self.get_isolation_level(new_connection), isolation_values[other_level])
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finally:
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new_connection.close()
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def test_isolation_level_validation(self):
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new_connection = connection.copy()
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new_connection.settings_dict['OPTIONS']['isolation_level'] = 'xxx'
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msg = (
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"Invalid transaction isolation level 'xxx' specified.\n"
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"Use one of 'read committed', 'read uncommitted', "
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"'repeatable read', 'serializable', or None."
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)
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with self.assertRaisesMessage(ImproperlyConfigured, msg):
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new_connection.cursor()
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