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[2.1.x] Fixed #29380 -- Added support for QuerySet.select_for_update()'s nowait and skip_locked options on MySQL 8+.

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Backport of a7bc1aea03 from master
This commit is contained in:
bakabiko
2018-05-19 01:37:36 +02:00
committed by Tim Graham
parent 452abf7b43
commit 54b29e022d
3 changed files with 20 additions and 1 deletions
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13
tests/backends/mysql/test_features.py
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@@ -1,6 +1,7 @@
from unittest import mock, skipUnless
from django.db import connection
from django.db.backends.mysql.features import DatabaseFeatures
from django.test import TestCase
@@ -17,3 +18,15 @@ class TestFeatures(TestCase):
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)
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)
database_features = DatabaseFeatures(_connection)
self.assertFalse(database_features.has_select_for_update_skip_locked)
self.assertFalse(database_features.has_select_for_update_nowait)