tools/page_cycler/webpagereplay/start.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // webpagereplay/start.js - Start Web Page Replay (WPR) test.
   6 //
   7 // This script is included by webpagereplay/start.html.
   8 // The query parameter "test=TEST_NAME" is required to load the
   9 // test configuration from webpagereplay/tests/TEST_NAME.js
  10 // That JavaScript file defines a global, "pageSets", as a list of lists:
  11 //       [ [url_1, url_2], [url_3], ...],
  12 //       - Before each sublist:
  13 //         Run chrome.browingData.remove and close the connections.
  14 //       - Before each url in a sublist:
  15 //         Close the connections.
  16 //
  17 // These WPR tests use a Chrome extension to load the test URLs.
  18 // The extension loads the test configuration via a DOM elemment
  19 // (id=json).  This script sets the content of that DOM element.
  20 //
  21 // The test runs immediately after being loaded.
  22 //
  23
  24
  25 var options = location.search.substring(1).split('&');
  26 function getopt(name) {
  27   var r = new RegExp('^' + name + '=');
  28   for (i = 0; i < options.length; ++i) {
  29     if (options[i].match(r)) {
  30       return options[i].substring(name.length + 1);
  31     }
  32   }
  33   return null;
  34 }
  35
  36 function LoadTestConfigurationScript(testUrl, callback) {
  37   var testjs = document.createElement('script');
  38   testjs.type = 'text/javascript';
  39   testjs.async = true;
  40   testjs.src = testUrl
  41   var s = document.getElementsByTagName('script')[0];
  42   testjs.addEventListener('load', callback, false);
  43   s.parentNode.insertBefore(testjs, s);
  44 }
  45
  46 function ReloadIfStuck() {
  47   setTimeout(function() {
  48       var status = document.getElementById('status');
  49       // The status text is set to 'STARTING' by the extension.
  50       if (status.textContent != 'STARTING') {
  51         console.log('Benchmark stuck?  Reloading.');
  52         window.location.reload(true);
  53       }
  54     }, 30000);
  55 }
  56
  57 function RenderForm() {
  58   var form = document.createElement('FORM');
  59   form.setAttribute('action', 'start.html');
  60
  61   var label = document.createTextNode('Iterations: ');
  62   form.appendChild(label);
  63
  64   var input = document.createElement('INPUT');
  65   var iterations = getopt('iterations');
  66   input.setAttribute('name', 'iterations');
  67   input.setAttribute('value', iterations ? iterations : '5');
  68   form.appendChild(input);
  69
  70   form.appendChild(document.createElement('P'));
  71
  72   var label = document.createTextNode('Test: ');
  73   form.appendChild(label);
  74
  75   var input = document.createElement('INPUT');
  76   input.setAttribute('name', 'test');
  77   var test = getopt('test');
  78   input.setAttribute('value', test ? test : '');
  79   form.appendChild(input);
  80
  81   var input = document.createElement('INPUT');
  82   input.setAttribute('name', 'auto');
  83   var auto = getopt('auto');
  84   input.setAttribute('value', 1);
  85   input.setAttribute('type', 'hidden');
  86   form.appendChild(input);
  87
  88   form.appendChild(document.createElement('P'));
  89
  90   input = document.createElement('INPUT');
  91   input.setAttribute('type', 'submit');
  92   input.setAttribute('value', 'Start');
  93   form.appendChild(input);
  94
  95   document.getElementById('startform').appendChild(form);
  96 }
  97
  98
  99 var iterations = getopt('iterations');
 100 var test_name = getopt('test');
 101 var is_auto_start = getopt('auto');
 102
 103 RenderForm();
 104 if (test_name) {
 105   var testUrl = 'tests/' + test_name + '.js';
 106   LoadTestConfigurationScript(testUrl, function() {
 107       var testConfig = {};
 108       if (iterations) {
 109         testConfig['iterations'] = iterations;
 110       }
 111       // The pageSets global is set by test configuration script.
 112       testConfig['pageSets'] = pageSets;
 113
 114       if (is_auto_start) {
 115         testConfig['shouldStart'] = 1;
 116         ReloadIfStuck();
 117       }
 118       // Write testConfig to "json" DOM element for the Chrome extension.
 119       document.getElementById('json').textContent = JSON.stringify(testConfig);
 120     });
 121 } else {
 122   console.log('Need "test=TEST_NAME" query parameter.');
 123 }