chrome/test/data/budget_service/budget_test.js

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

'use strict';

// The ResultQueue is a mechanism for passing messages back to the test
// framework.
var resultQueue = new ResultQueue();

function registerServiceWorker() {
  // The base dir used to resolve service_worker.js.
  navigator.serviceWorker.register('service_worker.js', {scope: './'}).then(
      function(swRegistration) {
        sendResultToTest('ok - service worker registered');
      }, sendErrorToTest);
}

// Query for the budget and return the current total.
function documentGetBudget() {
  navigator.budget.getBudget().then(function(budget) {
    sendResultToTest("ok - budget returned value of " + budget[0].budgetAt);
  }, function() {
    sendResultToTest("failed - unable to get budget values");
  });
}

// Request a reservation for a silent push.
function documentReserveBudget() {
  navigator.budget.reserve('silent-push').then(function(reserved) {
    if (reserved)
      sendResultToTest("ok - reserved budget");
    else
      sendResultToTest("failed - not able to reserve budget");
  }, function() {
    sendResultToTest("failed - error while trying to reserve budget");
  });
}

function workerGetBudget() {
  navigator.serviceWorker.controller.postMessage({command: 'workerGet'});
}

function workerReserveBudget() {
  navigator.serviceWorker.controller.postMessage({command: 'workerReserve'});
}

function isControlled() {
  if (navigator.serviceWorker.controller) {
    sendResultToTest('true - is controlled');
  } else {
    sendResultToTest('false - is not controlled');
  }
}

navigator.serviceWorker.addEventListener('message', function(event) {
  var message = JSON.parse(event.data);
  if (message.type == 'push')
    resultQueue.push(message.data);
  else
    sendResultToTest(message.data);
}, false);