def test_mensaje_cuando_no_hay_mas_papel(self):
hardware_device = HardwareDevice()
message = 'No hay más papeeeel!'
hardware_device.expend_ticket = Mock(side_effect=NoMorePaperException(message))
hardware_device.display_message = Mock()
self.maquinita.hardware_device = hardware_device
self.maquinita.set_price(1.70)
self.maquinita.insert_coin(Coin(1.0))
self.maquinita.insert_coin(Coin(0.50))
self.maquinita.insert_coin(Coin(0.10))
self.maquinita.insert_coin(Coin(0.10))
hardware_device.expend_ticket.assert_called_once_with(1.70)
hardware_device.display_message.assert_called_once_with(message)
self.assertEqual(self.maquinita.get_credit(), 0, "El crédito después de emitir un ticket sin papel es cero")
