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32 lines
1.2 KiB
Python
32 lines
1.2 KiB
Python
import sqlite3
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from unittest import mock, skipUnless
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from django.db import OperationalError, connection
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from django.test import TestCase
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@skipUnless(connection.vendor == "sqlite", "SQLite tests.")
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class FeaturesTests(TestCase):
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def test_supports_json_field_operational_error(self):
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if hasattr(connection.features, "supports_json_field"):
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del connection.features.supports_json_field
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msg = "unable to open database file"
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with mock.patch.object(
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connection,
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"cursor",
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side_effect=OperationalError(msg),
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):
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with self.assertRaisesMessage(OperationalError, msg):
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connection.features.supports_json_field
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def test_max_query_params_respects_variable_limit(self):
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limit_name = sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER
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current_limit = connection.features.max_query_params
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new_limit = min(42, current_limit)
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try:
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connection.connection.setlimit(limit_name, new_limit)
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self.assertEqual(connection.features.max_query_params, new_limit)
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finally:
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connection.connection.setlimit(limit_name, current_limit)
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self.assertEqual(connection.features.max_query_params, current_limit)
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