Testing JS references

test-refs.js

// is it possible to hold a reference to a wrapper's object,
// such that the reference automatically updates when the object updates?
// (rather than staying with the original object)?

var assert = require('assert');

function Wrapper(){
  this.client = null;
};

Wrapper.prototype.setClient = function(client){
  this.client = client;
};


var wrap = new Wrapper();
wrap.setClient({
  name: 'Original'
});

assert.equal(wrap.client.name, 'Original', 'Initial name in client');

// try to hold a persistent outside ref to wrap.client
// - doesn't work, it just passes thru the ref to the actual object -
var clientRef = wrap.client;

assert.equal(clientRef.name, 'Original', 'Initial name in ref');

wrap.setClient({
  name: 'New'
});

assert.equal(wrap.client.name, 'New', 'New name in client');

// fails here:
assert.equal(clientRef.name, 'New', 'New name in ref');