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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):
cursor = connection.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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