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import unittest
from django.core.management.color import no_style
from django.db import connection
from django.test import SimpleTestCase
from ..models import Person, Tag
@unittest.skipUnless(connection.vendor == "mysql", "MySQL tests.")
class MySQLOperationsTests(SimpleTestCase):
def test_sql_flush(self):
# allow_cascade doesn't change statements on MySQL.
for allow_cascade in [False, True]:
with self.subTest(allow_cascade=allow_cascade):
self.assertEqual(
connection.ops.sql_flush(
no_style(),
[Person._meta.db_table, Tag._meta.db_table],
allow_cascade=allow_cascade,
),
[
"SET FOREIGN_KEY_CHECKS = 0;",
"DELETE FROM `backends_person`;",
"DELETE FROM `backends_tag`;",
"SET FOREIGN_KEY_CHECKS = 1;",
],
)
def test_sql_flush_sequences(self):
# allow_cascade doesn't change statements on MySQL.
for allow_cascade in [False, True]:
with self.subTest(allow_cascade=allow_cascade):
self.assertEqual(
connection.ops.sql_flush(
no_style(),
[Person._meta.db_table, Tag._meta.db_table],
reset_sequences=True,
allow_cascade=allow_cascade,
),
[
"SET FOREIGN_KEY_CHECKS = 0;",
"TRUNCATE `backends_person`;",
"TRUNCATE `backends_tag`;",
"SET FOREIGN_KEY_CHECKS = 1;",
],
)
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