def testNegDuration__parse_option(self):
        with self.assertRaises(ValueError):
            self.plugin.parse_option('duration', None, '-50')
Store the `form_values` into the `instance` by calling
dataset/ETHPy150Open xtrementl/focus/tests/unit/plugin/modules/test_timer.py/TestTimer.testNegDuration__parse_option--crossover with--dataset/ETHPy150Open lsaffre/lino/lino/core/store.py/Store.form2obj