'test _do_clone_volume() when filesnap over nfs is supported'

@mock.patch.object(cnfs.VeritasCNFSDriver, '_get_local_volume_path')
@mock.patch.object(os.path, 'exists')
def test_do_clone_volume_success(self, m_exists, m_get_local_volume_path):

    drv = self.driver
    volume = fake_volume.fake_volume_obj(self.context, provider_location=self._loc)
    snapshot = fake_volume.fake_volume_obj(self.context)
    with mock.patch.object(drv, '_execute'):
        m_exists.return_value = True
        drv._do_clone_volume(volume, volume.name, snapshot)
