| from unittest import mock, skipUnless | |
| from django.db import OperationalError, connection | |
| from django.test import TestCase | |
| class FeaturesTests(TestCase): | |
| def test_supports_json_field_operational_error(self): | |
| if hasattr(connection.features, "supports_json_field"): | |
| del connection.features.supports_json_field | |
| msg = "unable to open database file" | |
| with mock.patch.object( | |
| connection, | |
| "cursor", | |
| side_effect=OperationalError(msg), | |
| ): | |
| with self.assertRaisesMessage(OperationalError, msg): | |
| connection.features.supports_json_field | |