def METHOD_NAME():
    mock = MagicMock(return_value={"retcode": 0, "stdout": ""})
    with patch.dict(rvm.__salt__, {"cmd.run_all": mock}):
        rvm._rvm(["install", "1.9.3"])
        mock.assert_called_once_with(
            ["/usr/local/rvm/bin/rvm", "install", "1.9.3"],
            runas=None,
            cwd=None,
            python_shell=False,
            env=None,
        )