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Diffstat (limited to 'tests')
| -rw-r--r-- | tests/schema/tests.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/schema/tests.py b/tests/schema/tests.py index e8cb1996cb..cf96e4163e 100644 --- a/tests/schema/tests.py +++ b/tests/schema/tests.py @@ -532,6 +532,23 @@ class SchemaTests(TransactionTestCase): with connection.schema_editor() as editor: editor.alter_field(Note, old_field, new_field, strict=True) + @skipUnlessDBFeature('can_defer_constraint_checks', 'can_rollback_ddl') + def test_alter_fk_checks_deferred_constraints(self): + """ + #25492 - Altering a foreign key's structure and data in the same + transaction. + """ + with connection.schema_editor() as editor: + editor.create_model(Node) + old_field = Node._meta.get_field('parent') + new_field = ForeignKey(Node, CASCADE) + new_field.set_attributes_from_name('parent') + parent = Node.objects.create() + with connection.schema_editor() as editor: + # Update the parent FK to create a deferred constraint check. + Node.objects.update(parent=parent) + editor.alter_field(Node, old_field, new_field, strict=True) + def test_alter_text_field_to_date_field(self): """ #25002 - Test conversion of text field to date field. |