chrome/test/data/webui/inspect_ui_test.js

// Copyright 2014 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.

function waitForElements(selector, populateFunctionName, callback) {
  var elements = document.querySelectorAll(selector);
  if (elements.length) {
    callback(elements);
    return;
  }
  var originalFunction = window[populateFunctionName];
  expectNotEquals(undefined, originalFunction);
  expectEquals(undefined, originalFunction.__isSniffer);
  var interceptFunction = function() {
    originalFunction.apply(window, arguments);
    var elements = document.querySelectorAll(selector);
    if (elements.length) {
      window[populateFunctionName] = originalFunction;
      callback(elements);
    }
  };
  interceptFunction.__isSniffer = true;
  window[populateFunctionName] = interceptFunction;
}

function findByContentSubstring(elements, content, childSelector) {
  return Array.prototype.filter.call(elements, function(element) {
    if (childSelector)
      element = element.querySelector(childSelector);
    return element && element.textContent.indexOf(content) >= 0;
  })[0];
}

function testTargetListed(sectionSelector, populateFunctionName, url) {
  waitForElements(
      sectionSelector + ' .row',
      populateFunctionName,
      function(elements) {
        var urlElement = findByContentSubstring(elements, url, '.url');
        expectNotEquals(undefined, urlElement);
        testDone();
      });
}

function testAdbTargetsListed() {
  waitForElements('.device', 'populateRemoteTargets', function(devices) {
    expectEquals(2, devices.length);

    var offlineDevice = findByContentSubstring(
        devices, 'Offline', '.device-name');
    expectNotEquals(undefined, offlineDevice);

    var onlineDevice = findByContentSubstring(
        devices, 'Nexus 6', '.device-name');
    expectNotEquals(undefined, onlineDevice);

    var browsers = onlineDevice.querySelectorAll('.browser');
    expectEquals(4, browsers.length);

    var chromeBrowser = findByContentSubstring(
       browsers, 'Chrome (32.0.1679.0)', '.browser-name');
    expectNotEquals(undefined, chromeBrowser);

    var chromePages = chromeBrowser.querySelectorAll('.pages');
    var chromiumPage = findByContentSubstring(
       chromePages, 'http://www.chromium.org/', '.url');
    expectNotEquals(undefined, chromiumPage);

    var pageById = {};
    Array.prototype.forEach.call(devices, function (device) {
      var pages = device.querySelectorAll('.row');
      Array.prototype.forEach.call(pages, function (page) {
        expectEquals(undefined, pageById[page.targetId]);
        pageById[page.targetId] = page;
      });
    });

    var webView = findByContentSubstring(
       browsers, 'WebView in com.sample.feed (4.0)', '.browser-name');
    expectNotEquals(undefined, webView);

    testDone();
  });
}