How should I write a unit test forJavaScript frontend service that uses promise with Karma, Mocha and Sinon -

trying test services i'm writing interact 3rd party api , wondering how test efficiently.

i have next method:

    function getmemberprofile(memberid) {          //make sure memberid defined , number         if (!isnan(memberid)) {             return client.authorizedapirequest('/members/' + memberid).get();         }         return promise.reject(new error('proper memberid not supplied'));     } 

when client.authorizedapirequest('/members/' + memberid).get() calls 3rd party api , returns promise resolves object (i.e. {id:12,name:'john doe'}).

so, how should test getmemberprofile function? thinking mocking out client.authorizedapirequest("some params").get() sinon can't working.

thanks

ok, got working. first you'll need install chai. then, in spec file:

beforeeach(function () {     fakemember = {         member: {             id: 10002,             first_name: 'john',             last_name: 'doe'         }     }; });  it('should member\'s profile memberid', function () {          //mock         sinon.stub(client, 'authorizedapirequest').withargs('/members/' + fakemember.member.id).returns({             get: function () {                 return promise.resolve(fakemember);             }         });          return members.getmemberprofile(fakemember.member.id).then(function (response) {             expect(response).to.have.property('member');             expect(response.member).to.have.property('id', fakemember.member.id);             expect(response.member).to.have.property('first_name', fakemember.member.first_name);             expect(response.member).to.have.property('last_name', fakemember.member.last_name);         });  });