from django.db.migrations.exceptions import NodeNotFoundError from django.test import SimpleTestCase class ExceptionTests(SimpleTestCase): def test_node_not_found_error_repr(self): node = ("some_app_label", "some_migration_label") error_repr = repr(NodeNotFoundError("some message", node)) self.assertEqual( error_repr, "NodeNotFoundError(('some_app_label', 'some_migration_label'))" )