Deferred Error Testing

Deferred.js

require([
  "dojo/Deferred"
], function(Deferred){
  var useError = 0;
  var getError = function(name, useThisError){
    var msg = name + ' error';
    if(useError || useThisError){
      return function(e){ console.error(msg); d.reject(e); };
    }
  };

  var doZap = function(){
    console.log('zap');
  };

  var doBar = function(){
    console.log('bar');
    throw new Error('BAR ERROR');
  };

  var doFoo = function(){
    console.log('foo');
  };

  var d = new Deferred();

  d.then(
    doZap,
    getError('zap')
  ).then(
    doBar, // throws an error
    function(e){ console.error('e bar'); d.reject(e); } // does not get called
  ).then(
    doFoo,
    getError('foo')
  );

  d.resolve();

  console.log('rejected:', d.isRejected(), 'fullfilled:', d.isFulfilled()); // not correct
});