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import unittest
from django.db import connection
from django.test import TestCase
from ..models import Person
@unittest.skipUnless(connection.vendor == "postgresql", "Test only for PostgreSQL")
class DatabaseSequenceTests(TestCase):
def test_get_sequences(self):
with connection.cursor() as cursor:
seqs = connection.introspection.get_sequences(cursor, Person._meta.db_table)
self.assertEqual(
seqs,
[
{
"table": Person._meta.db_table,
"column": "id",
"name": "backends_person_id_seq",
}
],
)
cursor.execute("ALTER SEQUENCE backends_person_id_seq RENAME TO pers_seq")
seqs = connection.introspection.get_sequences(cursor, Person._meta.db_table)
self.assertEqual(
seqs,
[{"table": Person._meta.db_table, "column": "id", "name": "pers_seq"}],
)
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