This is an Intern test suite that demonstrates a bug in Leadfoot's pollUntil helper

pollUntil-timeout-bug.js

define([
  'intern!tdd',
  'intern/dojo/node!leadfoot/helpers/pollUntil',
],
function (tdd, pollUntil) {
  tdd.suite('pollUntil', function () {
    tdd.test('should call the errback if it times out', function () {
      return this.get('remote')
        .get('http://google.com')
        .then(pollUntil(function () {
          return null;
        }, 1000))
        .then(function (val) {
          console.log('Super weird.', val);
        }, function () {
          console.log('As expected.');
        });
    });
  });
});