infinite-wait-for

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

tests.acceptance.my-acceptance-test.js

import { test } from 'qunit';
import moduleForAcceptance from '../../tests/helpers/module-for-acceptance';

import { waitFor } from '../helpers/wait-for';

moduleForAcceptance('TODO: put something here');

QUnit.config.testTimeout = 1000;

test('visiting /my-acceptance', function(assert) {
  visit('/');

  return waitFor(".aaa", { interval: 500 });
});

tests.helpers.destroy-app.js

import Ember from 'ember';
import { cleanup } from './wait-for';

export default function destroyApp(application) {
  cleanup();
  Ember.run(application, 'destroy');
}

tests.helpers.module-for-acceptance.js

import { module } from 'qunit';
import Ember from 'ember';
import startApp from '../helpers/start-app';
import destroyApp from '../helpers/destroy-app';

const { RSVP: { Promise } } = Ember;

export default function(name, options = {}) {
  module(name, {
    beforeEach() {
      this.application = startApp();

      if (options.beforeEach) {
        return options.beforeEach.apply(this, arguments);
      }
    },

    afterEach() {
      let afterEach = options.afterEach && options.afterEach.apply(this, arguments);
      return Promise.resolve(afterEach).then(() => destroyApp(this.application));
    }
  });
}

tests.helpers.resolver.js

import Resolver from '../../resolver';
import config from '../../config/environment';

const resolver = Resolver.create();

resolver.namespace = {
  modulePrefix: config.modulePrefix,
  podModulePrefix: config.podModulePrefix
};

export default resolver;

tests.helpers.start-app.js

import Ember from 'ember';
import Application from '../../app';
import config from '../../config/environment';

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.helpers.wait-for.js

import Ember from 'ember';

const {
  $,
  Test: {
    registerAsyncHelper,
  },
  RSVP: { Promise }
} = Ember;

function _waitFor(app, selectorOrFn, contextOrOptions, selectorOptions) {
  let waitForFn;
  let options;

  // find the options argument
  if (typeof contextOrOptions === "string") {
    options = selectorOptions;
  } else {
    options = contextOrOptions;
  }

  // option defaults
  options = options || {};
  options.interval = options.interval || 10;

  // Support old API where you can pass in a selector as
  // a string and we'll wait for that to exist. Can also
  // pass along context and count option.
  if (typeof selectorOrFn === "string") {
    let selector;
    let count = options.count || 1;

    // if context is a string we'll use it to scope the
    // selector
    if (typeof contextOrOptions === "string") {
      let context = contextOrOptions;
      selector = `${context} ${selectorOrFn}`;
    } else {
      selector = selectorOrFn;
    }

    waitForFn = selectorToExist(selector, count);
  } else {
    // new style, selectorOrFn is a function
    waitForFn = selectorOrFn;
  }

  // TWIDDLE DEMO COUNTER
  let counter = 0;
  let $qunitHeader = $('#qunit-header');
  let origHeaderHtml = $('#qunit-header').html();
  // END
  
  return new Promise((resolve) => {
    let label = waitForFn;

    let isComplete = waitForFn;

    let stopTrying = function() {
      return !_isActive(label);
    };

    let loop = function() {
      let timer = setTimeout(peek, options.interval);
      
      // TWIDDLE DEMO COUNTER
      $qunitHeader.html(`${origHeaderHtml} ${++counter}`)
      // END
      
      _track(label, timer);
    };

    let peek = function() {
      if (isComplete() || stopTrying()) {
        resolve(_done(label));
      } else {
        loop();
      }
    };

    loop();
  });
}

// Normally we we use Map here, but that doesn't work
// in phantom without including the babel polyfill.
// Note that Ember.Map is private, so we may have
// to refactor this out at some point.
const _runningWaiters = new Ember.Map();

function _track(label, timer) {
  _runningWaiters.set(label, timer);
}

function _cancel(label) {
  _runningWaiters.delete(label);
}

function _isActive(label) {
  return _runningWaiters.has(label);
}

function _done(label) {
  _cancel(label);
}

export function activeCount() {
  return _runningWaiters.size;
}

export function cleanup() {
  return _runningWaiters.clear();
}

export function selectorToExist(selector, count) {
  return function() {
    let existsCount = $(selector).length;

    if (count) {
      return existsCount === count;
    } else {
      return existsCount > 0;
    }
  };
}

export function waitFor(selector, context, options) {
  return _waitFor(null, selector, context, options);
}

export default registerAsyncHelper('waitFor', _waitFor);

tests.test-helper.js

import resolver from './helpers/resolver';
import {
  setResolver
} from 'ember-qunit';

setResolver(resolver);
import Ember from 'ember';

const { registerAsyncHelper } = Ember.Test;

twiddle.json

{
  "version": "0.10.7",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.0",
    "ember-data": "2.10.0",
    "ember-template-compiler": "2.10.0",
    "ember-testing": "2.10.0"
  },
  "addons": {
    "ember-wait-for-test-helper": "0.1.1"
  }
}