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import unittest
from django.db import connection
@unittest.skipUnless(connection.vendor == 'oracle', 'Oracle tests')
class OperationsTests(unittest.TestCase):
def test_sequence_name_truncation(self):
seq_name = connection.ops._get_no_autofield_sequence_name('schema_authorwithevenlongee869')
self.assertEqual(seq_name, 'SCHEMA_AUTHORWITHEVENLOB0B8_SQ')
def test_bulk_batch_size(self):
# Oracle restricts the number of parameters in a query.
objects = range(2**16)
self.assertEqual(connection.ops.bulk_batch_size([], objects), len(objects))
# Each field is a parameter for each object.
self.assertEqual(
connection.ops.bulk_batch_size(['id'], objects),
connection.features.max_query_params,
)
self.assertEqual(
connection.ops.bulk_batch_size(['id', 'other'], objects),
connection.features.max_query_params // 2,
)
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