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1 <title>window.requestIdleCallback exists</title> | |
esprehn
2015/08/21 08:22:20
You need <!DOCTYPE html>
rmcilroy
2015/08/21 11:21:51
Done.
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2 <link rel="author" title="Ross McIlroy" href="mailto:rmcilroy@chromium.org" /> | |
3 <link rel="help" href="http://www.w3.org/TR/requestidlecallback/"/> | |
4 <script src="../../../../resources/testharness.js"></script> | |
5 <script src="../../../../resources/testharnessreport.js"></script> | |
6 <link rel="stylesheet" href="../../resources/testharness.css" /> | |
7 <script> | |
8 test(function() { | |
9 assert_equals(typeof window.requestIdleCallback, "function"); | |
10 }, "window.requestIdleCallback is defined", {assert: "The window.requestIdleCall back function is used to request callbacks during browser-defined idle time."}); | |
11 | |
12 test(function() { | |
13 assert_equals(typeof window.cancelIdleCallback, "function"); | |
14 }, "window.cancelIdleCallback is defined", {assert: "The window.cancelIdleCallba ck function is used to cancel callbacks scheduled via requestIdleCallback."}); | |
15 | |
16 test(function() { | |
17 assert_equals(typeof window.requestIdleCallback(function() {}), "number"); | |
18 }, "window.requestIdleCallback() returns a number", {assert: "The requestIdleCal lback method MUST return a long"}); | |
19 | |
20 test(function() { | |
21 assert_equals(typeof window.cancelIdleCallback(1), "undefined"); | |
22 }, "window.cancelIdleCallback() returns undefined", {assert: "The cancelIdleCall back method MUST return void"}); | |
23 | |
24 async_test(function() { | |
25 // Check whether requestIdleCallback schedules a callback which gets executed | |
26 // and the deadline argument is passed correctly. | |
27 requestIdleCallback(this.step_func(function(deadline) { | |
28 assert_equals(typeof deadline, "object", "IdleDeadline MUST be passed to cal lback."); | |
29 assert_equals(typeof deadline.timeRemaining, "function", "IdleDeadline.timeR emaining MUST be a function"); | |
30 var timeRemaining = deadline.timeRemaining(); | |
31 assert_equals(typeof timeRemaining, "number", "IdleDeadline.timeRemaining() MUST return a double time remaining in milliseconds"); | |
32 assert_true(timeRemaining <= 50, "IdleDeadline.timeRemaining() MUST be less than or equal to 50ms in the future."); | |
33 assert_equals(typeof deadline.didTimeout, "boolean", "IdleDeadline.didTimeou t MUST be a boolean"); | |
34 assert_false(deadline.didTimeout, "IdleDeadline.didTimeout MUST be false if requestIdleCallback wasn't scheduled due to a timeout"); | |
35 this.done(); | |
36 })); | |
37 }, 'requestIdleCallback schedules callbacks'); | |
38 | |
39 async_test(function() { | |
40 // Check whether requestIdleCallback schedules a callback which gets executed | |
41 // and the deadline argument is passed correctly. | |
42 var handle = requestIdleCallback(this.step_func(function(deadline) { | |
43 assert_unreached("callback should not be called if canceled with cancelIdleC allback"); | |
44 })); | |
45 cancelIdleCallback(handle); | |
46 setTimeout(this.step_func(function() { | |
47 this.done(); | |
48 }), 200); | |
49 }, 'cancelIdleCallback cancels callbacks'); | |
50 | |
51 </script> | |
52 <h1>Description</h1> | |
53 <p>This test validates that window.requestIdleCallback and window.cancelIdleCall back exist and are a functions.</p> | |
54 <div id="log"></div> | |
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