'Check widget\'s scorer with scorer on the input'

def test_input_scorer(self):

    self.assertEqual(self.widget.learners, {})
    self.send_signal(self.widget.Inputs.scorer, self.log_reg, 1)
    value = self.widget.learners[1]
    self.assertEqual(self.log_reg, value.score)
    self.assertIsInstance(value.score, Scorer)
