'Check logistic regression classifier on input'

def test_input_lr_cls(self):

    self.widget.display_index = 0
    self.send_signal(self.widget.Inputs.classifier, self.lr_cls)
    self.assertEqual(len([item for item in self.widget.scene.items() if isinstance(item, DiscreteFeatureItem)]), len([a for a in self.data.domain.attributes if a.is_discrete]))
    self.assertEqual(len([item for item in self.widget.scene.items() if isinstance(item, ContinuousFeatureItem)]), len([a for a in self.data.domain.attributes if a.is_continuous]))
