63 lines
2.5 KiB
Python
63 lines
2.5 KiB
Python
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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 SimpleTestCase
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from ..models import Person, Square, Tag
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@unittest.skipUnless(connection.vendor == 'mysql', 'MySQL tests.')
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class MySQLOperationsTests(SimpleTestCase):
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def test_sql_flush(self):
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# allow_cascade doesn't change statements on MySQL.
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for allow_cascade in [False, True]:
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with self.subTest(allow_cascade=allow_cascade):
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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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allow_cascade=allow_cascade,
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)
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self.assertEqual(statements[0], 'SET FOREIGN_KEY_CHECKS = 0;')
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# The tables are processed in an unordered set.
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self.assertEqual(
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sorted(statements[1:-1]),
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[
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'DELETE FROM `backends_person`;',
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'DELETE FROM `backends_tag`;',
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],
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)
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self.assertEqual(statements[-1], 'SET FOREIGN_KEY_CHECKS = 1;')
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def test_sql_flush_sequences(self):
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# allow_cascade doesn't change statements on MySQL.
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for allow_cascade in [False, True]:
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with self.subTest(allow_cascade=allow_cascade):
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statements = connection.ops.sql_flush(
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no_style(),
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[Person._meta.db_table, Square._meta.db_table, Tag._meta.db_table],
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[
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{
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'table': Person._meta.db_table,
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'column': Person._meta.pk.db_column,
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},
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{
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'table': Tag._meta.db_table,
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'column': Tag._meta.pk.db_column,
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},
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],
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allow_cascade=allow_cascade,
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)
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self.assertEqual(statements[0], 'SET FOREIGN_KEY_CHECKS = 0;')
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# The tables are processed in an unordered set.
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self.assertEqual(
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sorted(statements[1:-1]),
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[
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'DELETE FROM `backends_square`;',
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'TRUNCATE `backends_person`;',
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'TRUNCATE `backends_tag`;',
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],
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)
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self.assertEqual(statements[-1], 'SET FOREIGN_KEY_CHECKS = 1;')
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