def METHOD_NAME(self):
    """
    Widget shows info when bow-features used. This test tests this info.
    """
    data = self.corpus[:3]
    # no data no info
    self.assertFalse(self.widget.Info.bow_weights.is_shown())
    self.send_signal(self.widget.Inputs.corpus, data)
    self.wait_until_finished()
    self.assertFalse(self.widget.Info.bow_weights.is_shown())
    self.send_signal(self.widget.Inputs.corpus, None)
    self.wait_until_finished()
    self.assertFalse(self.widget.Info.bow_weights.is_shown())
    # send bow data
    data = data.extend_attributes(
        csr_matrix([[3, 2, 0], [0, 3, 6], [0, 1, 0]]),
        ["Word1", "Word2", "Word3"])
    for v in data.domain.attributes:
        v.attributes["bow-feature"] = True
    self.send_signal(self.widget.Inputs.corpus, data)
    self.wait_until_finished()
    self.assertTrue(self.widget.Info.bow_weights.is_shown())
    self.send_signal(self.widget.Inputs.corpus, None)
    self.wait_until_finished()
    self.assertFalse(self.widget.Info.bow_weights.is_shown())