| OLD | NEW |
|---|
| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <meta charset="utf-8" /> | 4 <meta charset="utf-8" /> |
| 5 <title>window.performance.now exists</title> | 5 <title>window.performance.now exists</title> |
| 6 <link rel="author" title="W3C" href="http://www.w3.org/" /> | 6 <link rel="author" title="W3C" href="http://www.w3.org/" /> |
| 7 <link rel="help" href="http://www.w3.org/TR/hr-time/#sec-extenstions-performance
-interface"/> | 7 <link rel="help" href="http://www.w3.org/TR/hr-time/#sec-extenstions-performance
-interface"/> |
| 8 <script src="../../../resources/testharness.js"></script> | 8 <script src="../../../resources/testharness.js"></script> |
| 9 <script src="../../../resources/testharnessreport.js"></script> | 9 <script src="../../../resources/testharnessreport.js"></script> |
| 10 <script> | 10 <script> |
| (...skipping 10 matching lines...) Expand all Loading... |
| 21 }, "window.performance.now() function", {assert: "window.performance.now is a fu
nction"}); | 21 }, "window.performance.now() function", {assert: "window.performance.now is a fu
nction"}); |
| 22 | 22 |
| 23 test(function() { | 23 test(function() { |
| 24 assert_equals(typeof window.performance.now(), "number", "window.performance.n
ow() returns a number"); | 24 assert_equals(typeof window.performance.now(), "number", "window.performance.n
ow() returns a number"); |
| 25 }, "window.performance.now() returns a number", {assert: "The now method MUST re
turn a DOMHighResTimeStamp"}); | 25 }, "window.performance.now() returns a number", {assert: "The now method MUST re
turn a DOMHighResTimeStamp"}); |
| 26 | 26 |
| 27 async_test(function() { | 27 async_test(function() { |
| 28 // Check whether the performance.now() method is close to Date() within 30ms (
due to inaccuracies) | 28 // Check whether the performance.now() method is close to Date() within 30ms (
due to inaccuracies) |
| 29 var initial_hrt = performance.now(); | 29 var initial_hrt = performance.now(); |
| 30 var initial_date = Date.now(); | 30 var initial_date = Date.now(); |
| 31 setTimeout(this.step_func(function() { | 31 this.step_timeout(function() { |
| 32 var final_hrt = performance.now(); | 32 var final_hrt = performance.now(); |
| 33 var final_date = Date.now(); | 33 var final_date = Date.now(); |
| 34 assert_approx_equals(final_hrt - initial_hrt, final_date - initial_date, 30,
'High resolution time value increased by approximately the same amount as time
from date object'); | 34 assert_approx_equals(final_hrt - initial_hrt, final_date - initial_date, 30,
'High resolution time value increased by approximately the same amount as time
from date object'); |
| 35 this.done(); | 35 this.done(); |
| 36 }), 2000); | 36 }, 2000); |
| 37 }, 'High resolution time has approximately the right relative magnitude'); | 37 }, 'High resolution time has approximately the right relative magnitude'); |
| 38 </script> | 38 </script> |
| 39 </head> | 39 </head> |
| 40 <body> | 40 <body> |
| 41 <h1>Description</h1> | 41 <h1>Description</h1> |
| 42 <p>This test validates that window.performance.now() exist and is a function.</p
> | 42 <p>This test validates that window.performance.now() exist and is a function.</p
> |
| 43 | 43 |
| 44 <div id="log"></div> | 44 <div id="log"></div> |
| 45 | 45 |
| 46 </body> | 46 </body> |
| 47 </html> | 47 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2015623004:
Import wpt@ed94c51f3dfaa5ff4c9c311add1a560408059c51 (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master