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d5898db50e
Using unittest.TestCase doesn't work properly when we perform db
queries. Moreover introspection is extremely slow on Oracle without
limiting models to a "backends" app.
Follow up to 8bcca47e83.
142 lines
5.0 KiB
Python
142 lines
5.0 KiB
Python
import unittest
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from django.core.management.color import no_style
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from django.db import connection
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from django.test import TransactionTestCase
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from ..models import Person, Tag
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@unittest.skipUnless(connection.vendor == 'oracle', 'Oracle tests')
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class OperationsTests(TransactionTestCase):
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available_apps = ['backends']
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def test_sequence_name_truncation(self):
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seq_name = connection.ops._get_no_autofield_sequence_name('schema_authorwithevenlongee869')
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self.assertEqual(seq_name, 'SCHEMA_AUTHORWITHEVENLOB0B8_SQ')
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def test_bulk_batch_size(self):
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# Oracle restricts the number of parameters in a query.
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objects = range(2**16)
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self.assertEqual(connection.ops.bulk_batch_size([], objects), len(objects))
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# Each field is a parameter for each object.
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self.assertEqual(
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connection.ops.bulk_batch_size(['id'], objects),
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connection.features.max_query_params,
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)
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self.assertEqual(
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connection.ops.bulk_batch_size(['id', 'other'], objects),
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connection.features.max_query_params // 2,
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)
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def test_sql_flush(self):
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statements = connection.ops.sql_flush(
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no_style(),
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[Person._meta.db_table, Tag._meta.db_table],
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)
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# The tables and constraints are processed in an unordered set.
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self.assertEqual(
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statements[0],
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'ALTER TABLE "BACKENDS_TAG" DISABLE CONSTRAINT '
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'"BACKENDS__CONTENT_T_FD9D7A85_F" KEEP INDEX;',
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)
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self.assertEqual(
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sorted(statements[1:-1]),
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[
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'TRUNCATE TABLE "BACKENDS_PERSON";',
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'TRUNCATE TABLE "BACKENDS_TAG";',
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],
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)
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self.assertEqual(
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statements[-1],
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'ALTER TABLE "BACKENDS_TAG" ENABLE CONSTRAINT '
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'"BACKENDS__CONTENT_T_FD9D7A85_F";',
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)
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def test_sql_flush_allow_cascade(self):
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statements = connection.ops.sql_flush(
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no_style(),
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[Person._meta.db_table, Tag._meta.db_table],
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allow_cascade=True,
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)
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# The tables and constraints are processed in an unordered set.
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self.assertEqual(
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statements[0],
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'ALTER TABLE "BACKENDS_VERYLONGMODELNAME540F" DISABLE CONSTRAINT '
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'"BACKENDS__PERSON_ID_1DD5E829_F" KEEP INDEX;',
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)
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self.assertEqual(
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sorted(statements[1:-1]),
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[
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'TRUNCATE TABLE "BACKENDS_PERSON";',
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'TRUNCATE TABLE "BACKENDS_TAG";',
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'TRUNCATE TABLE "BACKENDS_VERYLONGMODELNAME540F";',
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],
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)
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self.assertEqual(
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statements[-1],
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'ALTER TABLE "BACKENDS_VERYLONGMODELNAME540F" ENABLE CONSTRAINT '
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'"BACKENDS__PERSON_ID_1DD5E829_F";',
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)
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def test_sql_flush_sequences(self):
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statements = connection.ops.sql_flush(
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no_style(),
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[Person._meta.db_table, Tag._meta.db_table],
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reset_sequences=True,
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)
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# The tables and constraints are processed in an unordered set.
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self.assertEqual(
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statements[0],
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'ALTER TABLE "BACKENDS_TAG" DISABLE CONSTRAINT '
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'"BACKENDS__CONTENT_T_FD9D7A85_F" KEEP INDEX;',
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)
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self.assertEqual(
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sorted(statements[1:3]),
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[
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'TRUNCATE TABLE "BACKENDS_PERSON";',
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'TRUNCATE TABLE "BACKENDS_TAG";',
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],
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)
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self.assertEqual(
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statements[3],
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'ALTER TABLE "BACKENDS_TAG" ENABLE CONSTRAINT '
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'"BACKENDS__CONTENT_T_FD9D7A85_F";',
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)
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# Sequences.
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self.assertEqual(len(statements[4:]), 2)
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self.assertIn('BACKENDS_PERSON_SQ', statements[4])
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self.assertIn('BACKENDS_TAG_SQ', statements[5])
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def test_sql_flush_sequences_allow_cascade(self):
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statements = connection.ops.sql_flush(
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no_style(),
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[Person._meta.db_table, Tag._meta.db_table],
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reset_sequences=True,
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allow_cascade=True,
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)
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# The tables and constraints are processed in an unordered set.
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self.assertEqual(
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statements[0],
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'ALTER TABLE "BACKENDS_VERYLONGMODELNAME540F" DISABLE CONSTRAINT '
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'"BACKENDS__PERSON_ID_1DD5E829_F" KEEP INDEX;',
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)
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self.assertEqual(
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sorted(statements[1:4]),
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[
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'TRUNCATE TABLE "BACKENDS_PERSON";',
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'TRUNCATE TABLE "BACKENDS_TAG";',
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'TRUNCATE TABLE "BACKENDS_VERYLONGMODELNAME540F";',
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],
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)
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self.assertEqual(
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statements[4],
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'ALTER TABLE "BACKENDS_VERYLONGMODELNAME540F" ENABLE CONSTRAINT '
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'"BACKENDS__PERSON_ID_1DD5E829_F";',
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)
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# Sequences.
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self.assertEqual(len(statements[5:]), 3)
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self.assertIn('BACKENDS_PERSON_SQ', statements[5])
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self.assertIn('BACKENDS_VERYLONGMODELN7BE2_SQ', statements[6])
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self.assertIn('BACKENDS_TAG_SQ', statements[7])
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