LayoutTests/virtual/threaded/fast/idle-callback/timeout.html - Issue 1119683003: Implement requestIdleCallback API

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Issue 1119683003: Implement requestIdleCallback API (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Rebased Created 5 years, 4 months ago

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	1 <!DOCTYPE html>

	2 <title>window.requestIdleCallback deals with timeouts correctly</title>

	3 <link rel="author" title="Ross McIlroy" href="mailto:rmcilroy@chromium.org" />

	4 <link rel="help" href="http://www.w3.org/TR/requestidlecallback/"/>

	5 <script src="../../../../resources/testharness.js"></script>

	6 <script src="../../../../resources/testharnessreport.js"></script>

	7 <link rel="stylesheet" href="../../resources/testharness.css" />

	8 <script>

	9

	10 async_test(function() {

	11 // Check whether requestIdleCallback with a timeout works when the event loop

	12 // is busy.

	13 var busy_raf_loop_iterations_remaining = 10; // Should take 20 * 40 = 400ms

	14 var idle_callback_scheduled;

	15 var idle_callback = this.step_func(function(deadline) {

	16 assert_false(deadline.didTimeout, "IdleDeadline.didTimeout MUST be false if requestIdleCallback wasn't scheduled due to a timeout");

	17 assert_equals(busy_raf_loop_iterations_remaining, 0, "Busy rAF loop should b e finished by the time we get scheduled");

	18 this.done();

	19 });

	20

	21 var busy_raf_loop_iterations_remaining = 10; // Should take 20 * 40 = 400ms

	22 requestAnimationFrame(this.step_func(function busyRAFLoop() {

	23 var start_time = performance.now();

	24 if (!idle_callback_scheduled) {

	25 idle_callback_scheduled = start_time;

	26 requestIdleCallback(idle_callback);

	27 }

	28

	29 // Use up the whole frame budget.

	30 while (performance.now() - start_time < 40) { }

	31 if (busy_raf_loop_iterations_remaining > 0) {

	32 busy_raf_loop_iterations_remaining--;

	33 requestAnimationFrame(busyRAFLoop);

	34 }

	35 }));

	36 }, 'requestIdleCallback not scheduled when event loop is busy.');

	37

	38 async_test(function() {

	39 // Check whether requestIdleCallback with a timeout works when the event loop

	40 // is busy.

	41 var busy_raf_loop_iterations_remaining = 10; // Should take 20 * 40 = 400ms

	42 var timeout = 200;

	43 var idle_callback_scheduled;

	44 var idle_callback = this.step_func(function(deadline) {

	45 var time_delta = performance.now() - idle_callback_scheduled;

	46 assert_true(time_delta >= timeout, "Should only have been run after timeout" );

	47 assert_true(time_delta - timeout <= 80, "Should have been scheduled close to timeout");

	48 assert_true(deadline.timeRemaining == 0, "IdleDeadline.timeRemaining MUST be equal to zero if requestIdleCallback was scheduled due to a timeout");

	49 assert_true(deadline.didTimeout, "IdleDeadline.didTimeout MUST be true if re questIdleCallback was scheduled due to a timeout");

	50 assert_true(busy_raf_loop_iterations_remaining > 0, "Busy rAF loop should st ill be going");

	51 this.done();

	52 });

	53

	54 requestAnimationFrame(this.step_func(function busyRAFLoop() {

	55 var start_time = performance.now();

	56 if (!idle_callback_scheduled) {

	57 idle_callback_scheduled = start_time;

	58 requestIdleCallback(idle_callback, timeout);

	59 }

	60

	61 // Use up the whole frame budget.

	62 while (performance.now() - start_time < 40) { }

	63 if (busy_raf_loop_iterations_remaining > 0) {

	64 busy_raf_loop_iterations_remaining--;

	65 requestAnimationFrame(busyRAFLoop);

	66 }

	67 }));

	68 }, 'requestIdleCallback scheduled with timeout when event loop is busy.');

	69

	70 </script>

	71 <h1>Description</h1>

	72 <p>This test validates that window.requestIdleCallback deals with timeouts corre ctly.</p>

	73 <div id="log"></div>

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