.then(res => {
     expect(res.name).to.equal('James')
     expect(res.surname).to.equal('Bond')
     expect(res.address).to.equal('Roc Boronat 35')
     expect(res.email).to.equal('*****@*****.**')
 
     return singingLabApi.unregisterUser(logic.userId(), res.email, '456')
         .then(res => {
             expect(res).to.be.true
         })
 })
 .then(id => 
     api.unregisterUser(id, email, password)
 .then(id =>
     singingLabApi.unregisterUser(id, email, password)