'Check if data is on output after create widget and run'

def test_data_on_output(self):

    self.send_signal(self.widget.Inputs.data, self.iris)
    self.widget.apply_button.button.click()
    self.assertNotEqual(self.widget.data, None)
    self.send_signal(self.widget.Inputs.data, None)
    self.assertEqual(self.widget.data, None)
