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+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="UTF-8" />
+ <title>window.performance User Timing measure() method is throwing the proper exceptions</title>
+ <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
+ <link rel="help" href="https://w3c.github.io/user-timing/#dom-performance-measure"/>
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ <script src="resources/webperftestharness.js"></script>
+
+ <script>
+// test data
+var zeroedNavTimingAtt = undefined;
+
+setup(function () {
+ // for testing the INVALID_ACCESS_ERR exception, find a navigation timing attribute with a value of zero
+ for (var i in timingAttributes) {
+ if (window.performance.timing[timingAttributes[i]] == 0) {
+ zeroedNavTimingAtt = timingAttributes[i];
+ }
+ }
+ if (zeroedNavTimingAtt == undefined) {
+ throw new Error("A navigation timing attribute with a value of 0 was not found to test for the " +
+ "INVALID_ACCESS_ERR exception thrown by window.performance.measure().")
+ }
+});
+
+test(function () {
+ assert_throws_dom("InvalidAccessError", function () {
+ window.performance.measure("measure", zeroedNavTimingAtt);
+ });
+}, "window.performance.measure(\"measure\", \"" + zeroedNavTimingAtt + "\"), where \"" +
+ zeroedNavTimingAtt + "\" is a navigation timing attribute with a value of 0, throws a " +
+ "InvalidAccessError exception.");
+
+test(function () {
+ assert_throws_dom("InvalidAccessError", function () {
+ window.performance.measure("measure", zeroedNavTimingAtt, "responseEnd");
+ });
+}, "window.performance.measure(\"measure\", \"" + zeroedNavTimingAtt + "\", " +
+ "\"responseEnd\"), where \"" + zeroedNavTimingAtt + "\" is a navigation timing " +
+ "attribute with a value of 0, throws a InvalidAccessError exception.");
+
+test(function () {
+ assert_throws_dom("InvalidAccessError", function () {
+ window.performance.measure("measure", "navigationStart", zeroedNavTimingAtt);
+ });
+}, "window.performance.measure(\"measure\", \"navigationStart\", \"" + zeroedNavTimingAtt +
+ "\"), where \"" + zeroedNavTimingAtt + "\" is a navigation timing attribute with a " +
+ "value of 0, throws a InvalidAccessError exception.");
+
+test(function () {
+ assert_throws_dom("InvalidAccessError", function () {
+ window.performance.measure("measure", zeroedNavTimingAtt, zeroedNavTimingAtt);
+ });
+}, "window.performance.measure(\"measure\", \"" + zeroedNavTimingAtt + "\", \"" +
+ zeroedNavTimingAtt + "\"), where \"" + zeroedNavTimingAtt + "\" is a navigation timing " +
+ "attribute with a value of 0, throws a InvalidAccessError exception.");
+ </script>
+ </head>
+ <body>
+ <h1>Description</h1>
+ <p><code>window.performance.measure()</code> method throws a InvalidAccessError
+ whenever a navigation timing attribute with a value of zero is provided as the startMark or endMark.
+ </p>
+
+ <div id="log"></div>
+ </body>
+</html>