Refs #16490 - Add a commit to ensure that a fresh read is provided; t…

…his is only a problem for databases in REPEATABLE READ mode, which is MySQL InnoDB's default. Thanks to Jim Dalton for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16781 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/select_for_update/tests.py

@@ -205,6 +205,11 @@ def test_block(self):
         # Check the thread has finished. Assuming it has, we should
         # find that it has updated the person's name.
         self.failIf(thread.isAlive())
+
+        # We must commit the transaction to ensure that MySQL gets a fresh read,
+        # since by default it runs in REPEATABLE READ mode
+        transaction.commit()
+
         p = Person.objects.get(pk=self.person.pk)
         self.assertEqual('Fred', p.name)