function() { if (member.isEnrolled()) { t.pass('Member isEnrolled successfully.'); } else { t.fail('Member isEnrolled failed.'); } return client.setUserContext(member); },
function(user) { return client.setUserContext(new User('userx')); })
}).then((user) => { member_user = user; return fabric_client.setUserContext(member_user); }).then(()=>{