def test_set_linux_distro_invalid(self):
        """Set Linux distribution to an invalid value"""
        hpccm.config.set_linux_distro('invalid')
        self.assertEqual(hpccm.config.g_linux_distro,
                         hpccm.linux_distro.UBUNTU)
        self.assertEqual(hpccm.config.g_linux_version, Version('16.04'))
Set Linux distribution to an invalid value
test/test_config.py