'Test mac_address variable after a second address is specified'

def test_mac_address_modified(self):

    new_mac_address = '11:11:11:11:11:11'
    self.adapter.mac_address = new_mac_address
    message = 'Failed    to    get    the    current    MAC    address    after    modification'
    self.assertEqual(self.adapter.mac_address, new_mac_address, message)
