def test_deepcopy(self):
        widget = CronWidget()
        obj = copy.deepcopy(widget)
        self.assertIsNot(widget, obj)
        self.assertEqual(widget.options, obj.options)
        self.assertIsNot(widget.options, obj.options)
        self.assertEqual(widget.attrs, obj.attrs)
        self.assertIsNot(widget.attrs, obj.attrs)
Resolve a ``fragment`` within the referenced ``document``.
dataset/ETHPy150Open saeedsq/django-fancy-cronfield/fancy_cronfield/tests/test_widgets.py/CronWidgetTests.test_deepcopy--crossover with--dataset/ETHPy150Open danielyule/hearthbreaker/jsonschema/validators.py/RefResolver.resolve_fragment