third_party/WebKit/LayoutTests/fast/dom/Window/window-properties-performance.html

   1 <p>This test dumps all of the properties that are reachable from the window.performance object, along with their types.</p>
   2 <hr>
   3 <pre id="pre"></pre>
   4
   5 <script>
   6 if (window.testRunner)
   7     testRunner.dumpAsText();
   8
   9 var logBuffer = [];
  10 function log(s)
  11 {
  12     logBuffer.push(s);
  13 }
  14
  15 var pre = document.getElementById('pre');
  16 function flushLog()
  17 {
  18     var logMessage = logBuffer.join("");
  19     pre.appendChild(document.createTextNode(logMessage));
  20 }
  21
  22 function tryEval(string)
  23 {
  24     try {
  25         return eval(string);
  26     } catch (e) {
  27         return new String("Caught exception: " + e);
  28     }
  29 }
  30
  31 function typeOfNullAware(value)
  32 {
  33     if (typeof value == "object" && value == null) //;
  34         return "null";
  35     return typeof value;
  36 }
  37
  38 function typeStringNullAware(value)
  39 {
  40     var valueType = typeOfNullAware(value);
  41     return valueType == "object"
  42         ? Object.prototype.toString.call(value)
  43         : "[" + valueType + "]";
  44 }
  45
  46 function logValue(valueName)
  47 {
  48     var value = tryEval(valueName);
  49     var valueType = typeOfNullAware(value);
  50
  51     // Don't taint the test with our own variables
  52     if (value == logBuffer || value == pre)
  53         return;
  54
  55     // Don't taint the test with our own properties
  56     if (/__visitedByLogValue__/.test(valueName) || /__nameWhenVisitedByLogValue__/.test(valueName))
  57         return;
  58
  59     // Work around Firefox infinite recursion
  60     if (/\.[0-9]/.test(valueName))
  61         return;
  62
  63     // Avoid infinite recursion
  64     if (valueType == "object" && value.__visitedByLogValue__) { //;
  65         log(valueName + " [printed above as " + value.__nameWhenVisitedByLogValue__ + "]\n");
  66         return;
  67     }
  68
  69     log(valueName + " " + typeStringNullAware(value) + "\n");
  70
  71     if (valueType == "object") {
  72         value.__visitedByLogValue__ = true;
  73         value.__nameWhenVisitedByLogValue__ = valueName;
  74         logProperties(value, valueName);
  75     }
  76 }
  77
  78 function logProperties(object, objectName)
  79 {
  80     var array = new Array;
  81     for (var property in object) {
  82         array.push(property);
  83     }
  84     array.sort();
  85     for (var i = 0; i < array.length; i++) {
  86         var property = array[i];
  87         logValue(objectName + "." + property);
  88     }
  89 }
  90
  91 logValue('window.performance');
  92 window.performance.timing = 'timing is not replaceable';
  93 logValue('window.performance.timing');
  94 // PerformanceTiming supports a serializer.
  95 var jsonizedTiming = JSON.parse(JSON.stringify(window.performance.timing));
  96 logValue('jsonizedTiming');
  97 // PerformanceEntry supports a serializer.
  98 window.performance.measure('request');
  99 var jsonizedEntry = JSON.parse(JSON.stringify(window.performance.getEntriesByName('request')[0]));
 100 logValue('jsonizedEntry');
 101 window.performance.navigation = 'navigation is not replaceable';
 102 logValue('window.performance.navigation');
 103 window.performance = 'performance is replaceable';
 104 logValue('window.performance');
 105 flushLog();
 106 </script>