def METHOD_NAME(self, m_run_command, m_exit_json):
    ca_test_common.set_module_args({
    })
    m_exit_json.side_effect = ca_test_common.exit_json
    stdout = ''
    stderr = ''
    rc = 0
    m_run_command.return_value = rc, stdout, stderr
    with pytest.raises(ca_test_common.AnsibleExitJson) as result:
        ceph_volume_simple_scan.main()
    result = result.value.args[0]
    assert result['changed']
    assert result['cmd'] == ['ceph-volume', '--cluster', fake_cluster, 'simple', 'scan']
    assert result['rc'] == rc
    assert result['stderr'] == stderr
    assert result['stdout'] == stdout