'Tooltips should change when a target class is specified with a
discrete target class.'

def test_tooltip_changes_for_classification_target_class(self):

    self.widget.cb_show_tooltips.setChecked(True)
    self.send_signal('Tree', self.titanic)
    tooltips = []
    def _callback():
        tooltips.append(self.get_visible_squares()[2].toolTip())
    simulate.combobox_run_through_all(self.widget.target_class_combo, callback=_callback)
    self.assertFalse(self._check_all_same(tooltips))
