def _post_setattr_minimum(self, old, new):
        if new > self.maximum:
            self.maximum = new
        if new > self.datetime:
            self.datetime = new
Test the smart prefix search function.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/widgets/bounded_datetime.py/BoundedDatetime._post_setattr_minimum--crossover with--dataset/ETHPy150Open SpriteLink/NIPAP/tests/nipapbase.py/NipapTest.test_prefix_search_smart