tor-browser

The Tor Browser
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measure_exceptions_navigation_timing.html (3292B)

      1 <!DOCTYPE html>
      2 <html>
      3    <head>
      4        <meta charset="UTF-8" />
      5        <title>window.performance User Timing measure() method is throwing the proper exceptions</title>
      6        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
      7        <link rel="help" href="https://w3c.github.io/user-timing/#dom-performance-measure"/>
      8        <script src="/resources/testharness.js"></script>
      9        <script src="/resources/testharnessreport.js"></script>
     10        <script src="resources/webperftestharness.js"></script>
     11 
     12    <script>
     13 // test data
     14 var zeroedNavTimingAtt = undefined;
     15 
     16 setup(function () {
     17   // for testing the INVALID_ACCESS_ERR exception, find a navigation timing attribute with a value of zero
     18   for (var i in timingAttributes) {
     19     if (window.performance.timing[timingAttributes[i]] == 0) {
     20        zeroedNavTimingAtt = timingAttributes[i];
     21     }
     22   }
     23   if (zeroedNavTimingAtt == undefined) {
     24       throw new Error("A navigation timing attribute with a value of 0 was not found to test for the " +
     25                          "INVALID_ACCESS_ERR exception thrown by window.performance.measure().")
     26   }
     27 });
     28 
     29 test(function () {
     30   assert_throws_dom("InvalidAccessError", function () {
     31       window.performance.measure("measure", zeroedNavTimingAtt);
     32   });
     33 }, "window.performance.measure(\"measure\", \"" + zeroedNavTimingAtt + "\"), where \"" +
     34                              zeroedNavTimingAtt + "\" is a navigation timing attribute with a value of 0, throws a " +
     35                              "InvalidAccessError exception.");
     36 
     37 test(function () {
     38   assert_throws_dom("InvalidAccessError", function () {
     39       window.performance.measure("measure", zeroedNavTimingAtt, "responseEnd");
     40   });
     41 }, "window.performance.measure(\"measure\", \"" + zeroedNavTimingAtt + "\", " +
     42                              "\"responseEnd\"), where \"" + zeroedNavTimingAtt + "\" is a navigation timing " +
     43                              "attribute with a value of 0, throws a InvalidAccessError exception.");
     44 
     45 test(function () {
     46   assert_throws_dom("InvalidAccessError", function () {
     47       window.performance.measure("measure", "navigationStart", zeroedNavTimingAtt);
     48   });
     49 }, "window.performance.measure(\"measure\", \"navigationStart\", \"" + zeroedNavTimingAtt +
     50                              "\"), where \"" + zeroedNavTimingAtt + "\" is a navigation timing attribute with a " +
     51                              "value of 0, throws a InvalidAccessError exception.");
     52 
     53 test(function () {
     54   assert_throws_dom("InvalidAccessError", function () {
     55       window.performance.measure("measure", zeroedNavTimingAtt, zeroedNavTimingAtt);
     56   });
     57 }, "window.performance.measure(\"measure\", \"" + zeroedNavTimingAtt + "\", \"" +
     58                              zeroedNavTimingAtt + "\"), where \"" + zeroedNavTimingAtt + "\" is a navigation timing " +
     59                              "attribute with a value of 0, throws a InvalidAccessError exception.");
     60    </script>
     61    </head>
     62    <body>
     63        <h1>Description</h1>
     64        <p><code>window.performance.measure()</code> method throws a InvalidAccessError
     65           whenever a navigation timing attribute with a value of zero is provided as the startMark or endMark.
     66        </p>
     67 
     68        <div id="log"></div>
     69    </body>
     70 </html>