fix handling of test shutdown promises auditors @bbondy
fix handling of test shutdown promises
auditors @bbondy
timborden/browser-laptop,luixxiul/browser-laptop,luixxiul/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,timborden/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop