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Philip Jägenstedt
8abde7358e
Automatic update from web-platform-tests [idlharness.js] Replace void with undefined where it remains (#28539) All uses of void have already been replaced in interfaces/*.idl. This fixes idlharness.js and replaced void in the few places it remains, except for the tests in WebIDL/ which aren't run as part of WPT. -- wpt-commits: 76401f16e01721276f74bdc3d9b0e0824db3bf69 wpt-pr: 28539
54 lines
2.7 KiB
HTML
54 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<title>window.requestIdleCallback exists</title>
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<link rel="author" title="Ross McIlroy" href="mailto:[email protected]" />
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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// The window.requestIdleCallback function is used to request callbacks during browser-defined idle time.
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test(function() {
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assert_equals(typeof window.requestIdleCallback, "function");
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}, "window.requestIdleCallback is defined");
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// The window.cancelIdleCallback function is used to cancel callbacks scheduled via requestIdleCallback.
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test(function() {
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assert_equals(typeof window.cancelIdleCallback, "function");
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}, "window.cancelIdleCallback is defined");
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// The requestIdleCallback method MUST return a long
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test(function() {
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assert_equals(typeof window.requestIdleCallback(function() {}), "number");
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}, "window.requestIdleCallback() returns a number");
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// The cancelIdleCallback method MUST return undefined
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test(function() {
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assert_equals(typeof window.cancelIdleCallback(1), "undefined");
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}, "window.cancelIdleCallback() returns undefined");
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async_test(function() {
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// Check whether requestIdleCallback schedules a callback which gets executed
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// and the deadline argument is passed correctly.
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requestIdleCallback(this.step_func_done(function(deadline) {
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assert_equals(arguments.length, 1, "Only one argument should be passed to callback.");
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assert_class_string(deadline, "IdleDeadline");
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assert_equals(typeof deadline.timeRemaining, "function", "IdleDeadline.timeRemaining MUST be a function which returns the time remaining in milliseconds");
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assert_equals(typeof deadline.timeRemaining(), "number", "IdleDeadline.timeRemaining MUST return a double of the time remaining in milliseconds");
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assert_true(deadline.timeRemaining() <= 50, "IdleDeadline.timeRemaining() MUST be less than or equal to 50ms in the future.");
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assert_equals(typeof deadline.didTimeout, "boolean", "IdleDeadline.didTimeout MUST be a boolean");
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assert_false(deadline.didTimeout, "IdleDeadline.didTimeout MUST be false if requestIdleCallback wasn't scheduled due to a timeout");
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}));
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}, 'requestIdleCallback schedules callbacks');
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async_test(function() {
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// Check whether requestIdleCallback schedules a callback which gets executed
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// and the deadline argument is passed correctly.
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var handle = requestIdleCallback(this.step_func(function(deadline) {
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assert_unreached("callback should not be called if canceled with cancelIdleCallback");
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}));
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cancelIdleCallback(handle);
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step_timeout(this.step_func_done(), 200);
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}, 'cancelIdleCallback cancels callbacks');
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</script>
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<h1>Basic requestIdleCallback Tests</h1>
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<div id="log"></div>
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