def METHOD_NAME(self):
    if not config.CONFIG.get('grass', 'gisbase'):
        self.skipTest('GRASS lib not found')
    if not service_ok('https://demo.mapserver.org'):
        self.skipTest("mapserver is unreachable")
    client = client_for(Service(processes=[create_sum_one()]))
    request_doc = WPS.Execute(
        OWS.Identifier('sum_one'),
        WPS.DataInputs(
            WPS.Input(
                OWS.Identifier('input'),
                WPS.Reference(
                    {'{http://www.w3.org/1999/xlink}href': wcsResource}))),
        WPS.ProcessOutputs(
            WPS.Output(
                OWS.Identifier('output'))),
        version='1.0.0')
    resp = client.post_xml(doc=request_doc)
    assert_response_success(resp)
    # Other things to assert:
    # . the inclusion of output
    # . the type of output