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<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>exception test of performance.mark and performance.measure</title> <link rel="author" title="Intel" href="http://www.intel.com/" /> <link rel="help" href="https://w3c.github.io/user-timing/#extensions-performance-interface"/> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="resources/webperftestharness.js"></script> </head> <body> <h1>Description</h1> <p>This test validates exception scenarios of invoking mark() and measure() without parameter.</p> <div id="log"></div> <script> test(function () { assert_throws_js(TypeError, function () { window.performance.mark() }); }, "window.performance.mark() throws a TypeError exception when invoke without a parameter."); test(function () { assert_throws_js(TypeError, function () { window.performance.measure(); }); }, "window.performance.measure() throws a TypeError exception when invoke without a parameter."); </script> </body> </html>