Method test_add_auto_field

tests/schema/tests.py:1064–1086

(self)

    @isolate_apps("schema")
    def test_add_auto_field(self):
        class AddAutoFieldModel(Model):
            name = CharField(max_length=255, primary_key=True)

            class Meta:
                app_label = "schema"

        with connection.schema_editor() as editor:
            editor.create_model(AddAutoFieldModel)
        self.isolated_local_models = [AddAutoFieldModel]
        old_field = AddAutoFieldModel._meta.get_field("name")
        new_field = CharField(max_length=255)
        new_field.set_attributes_from_name("name")
        new_field.model = AddAutoFieldModel
        with connection.schema_editor() as editor:
            editor.alter_field(AddAutoFieldModel, old_field, new_field)
        new_auto_field = AutoField(primary_key=True)
        new_auto_field.set_attributes_from_name("id")
        new_auto_field.model = AddAutoFieldModel()
        with connection.schema_editor() as editor:
            editor.add_field(AddAutoFieldModel, new_auto_field)
        # Crashes on PostgreSQL when the GENERATED BY suffix is missing.
        AddAutoFieldModel.objects.create(name="test")

    def test_remove_field(self):
        with connection.schema_editor() as editor: