try:
        json_fp = open("{0}/{1}".format(test_folder, jsonFile))
        dataJson = json.load(json_fp)
        Printc.infob(
            u"Data for specific tests are loaded from {0}".format(jsonFile))
        json_fp.close()
    except:
        Printc.err(u"Error while loading json tests {0} : {1}".format(
            "{0}/{1}".format(test_folder, jsonFile), traceback.format_exc()))
    else:
        for device in dataJson:
            dev_id, td = createDevice(device)
            device['device_id'] = dev_id
            time.sleep(5)  # due to high DB flow, wait 5s
        suite.addTest(
            RFPlayerTestCase("test_0110_device_sensors", plugin, name, cfg,
                             dataJson))

# do some tests comon to all the plugins
#suite.addTest(RFPlayerTestCase("test_9900_hbeat", plugin, name, cfg))
    suite.addTest(
        RFPlayerTestCase("test_9990_stop_the_plugin", plugin, name, cfg))

    # quit
    res = unittest.TextTestRunner().run(suite)
    if res.wasSuccessful() == True:
        rc = 0  # tests are ok so the shell return code is 0
    else:
        rc = 1  # tests are ok so the shell return code is != 0
    plugin.force_leave(return_code=rc)