def test_attrs_precedence(self):
        widget = CronWidget(attrs={'id': 'id_timing', 'class': 'pretty'})
        html = '<input data-fancy="cron" type="hidden" name="timing"'
        html += ' id="id_timing" data-allow_multiple_dom="1"'
        html += ' data-allow_multiple_dow="1" data-allow_multiple_hour="1"'
        html += ' data-allow_multiple_minute="1" data-allow_multiple_month="1"'
        html += ' data-use_gentle_select="1" class="special"/>'
        self.check_html(
            widget=widget, name='timing', value='',
            html=html, attrs={'id': 'id_timing', 'class': 'special'},
        )
`attrs` passed to render() get precedence over those passed to the
dataset/ETHPy150Open saeedsq/django-fancy-cronfield/fancy_cronfield/tests/test_widgets.py/CronWidgetTests.test_attrs_precedence