Should ------ http://unitjs.com/guide/should-js.html
require('should');
response.body.should.have.property('session');
response.body.should.deepEqual({
errors: { email: 'required' }
});
response.body.session.should.be.Object();
//------------
true.should.be.ok;
'yay'.should.be.ok;
(1).should.be.ok;
({}).should.be.ok;
//------------
false.should.not.be.ok;
''.should.not.be.ok;
(0).should.not.be.ok;
//------------