Fixed #16961 -- Skipped resetting AUTO_INCREMENT fields for MySQL if the server version is greater than 5.0.12. This allows for much faster testing.

Thanks to aigarius for the report and claudep and ramiro for review.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17932 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Anssi Kääriäinen 2012-04-24 16:47:31 +00:00
parent 03a442c8ad
commit 612247b3a0
4 changed files with 65 additions and 11 deletions

View File

@ -261,15 +261,17 @@ class DatabaseOperations(BaseDatabaseOperations):
sql.append('%s %s;' % (style.SQL_KEYWORD('TRUNCATE'), style.SQL_FIELD(self.quote_name(table))))
sql.append('SET FOREIGN_KEY_CHECKS = 1;')
# 'ALTER TABLE table AUTO_INCREMENT = 1;'... style SQL statements
# to reset sequence indices
sql.extend(["%s %s %s %s %s;" % \
(style.SQL_KEYWORD('ALTER'),
style.SQL_KEYWORD('TABLE'),
style.SQL_TABLE(self.quote_name(sequence['table'])),
style.SQL_KEYWORD('AUTO_INCREMENT'),
style.SQL_FIELD('= 1'),
) for sequence in sequences])
# Truncate already resets the AUTO_INCREMENT field from
# MySQL version 5.0.13 onwards. Refs #16961.
if self.connection.mysql_version < (5,0,13):
sql.extend(
["%s %s %s %s %s;" % \
(style.SQL_KEYWORD('ALTER'),
style.SQL_KEYWORD('TABLE'),
style.SQL_TABLE(self.quote_name(sequence['table'])),
style.SQL_KEYWORD('AUTO_INCREMENT'),
style.SQL_FIELD('= 1'),
) for sequence in sequences])
return sql
else:
return []

View File

@ -61,10 +61,34 @@ class OracleChecks(unittest.TestCase):
def test_client_encoding(self):
# If the backend is Oracle, test that the client encoding is set
# correctly. This was broken under Cygwin prior to r14781.
c = connection.cursor() # Ensure the connection is initialized.
connection.cursor() # Ensure the connection is initialized.
self.assertEqual(connection.connection.encoding, "UTF-8")
self.assertEqual(connection.connection.nencoding, "UTF-8")
class MySQLTests(TestCase):
@unittest.skipUnless(connection.vendor == 'mysql',
"Test valid only for MySQL")
def test_autoincrement(self):
"""
Check that auto_increment fields are reset correctly by sql_flush().
Before MySQL version 5.0.13 TRUNCATE did not do auto_increment reset.
Refs #16961.
"""
statements = connection.ops.sql_flush(no_style(),
tables=['test'],
sequences=[{
'table': 'test',
'col': 'somecol',
}])
found_reset = False
for sql in statements:
found_reset = found_reset or 'ALTER TABLE' in sql
if connection.mysql_version < (5,0,13):
self.assertTrue(found_reset)
else:
self.assertFalse(found_reset)
class DateQuotingTest(TestCase):
def test_django_date_trunc(self):

View File

@ -0,0 +1,5 @@
from django.db import models
class Person(models.Model):
first_name = models.CharField(max_length=20)
last_name = models.CharField(max_length=20)

View File

@ -8,13 +8,15 @@ from optparse import make_option
from django.core.exceptions import ImproperlyConfigured
from django.core.management import call_command
from django import db
from django.test import simple
from django.db import connection
from django.test import simple, TransactionTestCase
from django.test.simple import DjangoTestSuiteRunner, get_tests
from django.test.testcases import connections_support_transactions
from django.utils import unittest
from django.utils.importlib import import_module
from ..admin_scripts.tests import AdminScriptTestCase
from .models import Person
TEST_APP_OK = 'regressiontests.test_runner.valid_app.models'
@ -281,3 +283,24 @@ class Sqlite3InMemoryTestDbs(unittest.TestCase):
self.assertTrue(connections_support_transactions(), msg)
finally:
db.connections = old_db_connections
class AutoIncrementResetTest(TransactionTestCase):
"""
Here we test creating the same model two times in different test methods,
and check that both times they get "1" as their PK value. That is, we test
that AutoField values start from 1 for each transactional test case.
"""
@unittest.skipIf(connection.vendor == 'oracle',
"Oracle's auto-increment fields are not reset between "
"tests")
def test_autoincrement_reset1(self):
p = Person.objects.create(first_name='Jack', last_name='Smith')
self.assertEquals(p.pk, 1)
@unittest.skipIf(connection.vendor == 'oracle',
"Oracle's auto-increment fields are not reset between "
"tests")
def test_autoincrement_reset2(self):
p = Person.objects.create(first_name='Jack', last_name='Smith')
self.assertEquals(p.pk, 1)