Reply to mongoose GH-334

bug-334.js

var mongoose = require('mongoose')
  , Schema = mongoose.Schema
  , assert = require('assert');

var subSchema = new Schema({ 
  name : String , 
  subObj : { subName : String } 
});
var schema = new Schema ({ name : String , arrData : [ subSchema] }); 

var db = mongoose.createConnection('mongodb://localhost/bugs');

mongoose.model('model' , schema);
var model = db.model('model');
var instance = new model();

instance.set( { name : 'name-value' , arrData : [ { name : 'arrName1' , subObj : { subName : 'subName1' } } ] });
instance.save(function(err)  {
    model.findById(instance.id, function(err, doc)  {
      doc.arrData[0].set('subObj' , { subName : 'modified subName' });
      doc.save(function(err)  {
        if (err) throw err;
        model.findById(instance.id, function (err, doc) {
          console.log("SUCCESS");
          assert.equal(doc.arrData[0].subObj.subName, 'modified subName');
          db.close();
        });
      });
   });
});

// => SUCCESS