tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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basic.html (2734B)

      1 <!DOCTYPE html>
      2 <title>window.requestIdleCallback exists</title>
      3 <link rel="author" title="Ross McIlroy" href="mailto:rmcilroy@chromium.org" />
      4 <script src="/resources/testharness.js"></script>
      5 <script src="/resources/testharnessreport.js"></script>
      6 <script>
      7 // The window.requestIdleCallback function is used to request callbacks during browser-defined idle time.
      8 test(function() {
      9  assert_equals(typeof window.requestIdleCallback, "function");
     10 }, "window.requestIdleCallback is defined");
     11 
     12 // The window.cancelIdleCallback function is used to cancel callbacks scheduled via requestIdleCallback.
     13 test(function() {
     14  assert_equals(typeof window.cancelIdleCallback, "function");
     15 }, "window.cancelIdleCallback is defined");
     16 
     17 // The requestIdleCallback method MUST return a long
     18 test(function() {
     19  assert_equals(typeof window.requestIdleCallback(function() {}), "number");
     20 }, "window.requestIdleCallback() returns a number");
     21 
     22 // The cancelIdleCallback method MUST return undefined
     23 test(function() {
     24  assert_equals(typeof window.cancelIdleCallback(1), "undefined");
     25 }, "window.cancelIdleCallback() returns undefined");
     26 
     27 async_test(function() {
     28  // Check whether requestIdleCallback schedules a callback which gets executed
     29  // and the deadline argument is passed correctly.
     30  requestIdleCallback(this.step_func_done(function(deadline) {
     31    assert_equals(arguments.length, 1, "Only one argument should be passed to callback.");
     32    assert_class_string(deadline, "IdleDeadline");
     33    assert_equals(typeof deadline.timeRemaining, "function", "IdleDeadline.timeRemaining MUST be a function which returns the time remaining in milliseconds");
     34    assert_equals(typeof deadline.timeRemaining(), "number", "IdleDeadline.timeRemaining MUST return a double of the time remaining in milliseconds");
     35    assert_true(deadline.timeRemaining() <= 50, "IdleDeadline.timeRemaining() MUST be less than or equal to 50ms in the future.");
     36    assert_equals(typeof deadline.didTimeout, "boolean", "IdleDeadline.didTimeout MUST be a boolean");
     37    assert_false(deadline.didTimeout, "IdleDeadline.didTimeout MUST be false if requestIdleCallback wasn't scheduled due to a timeout");
     38  }));
     39 }, 'requestIdleCallback schedules callbacks');
     40 
     41 async_test(function() {
     42  // Check whether requestIdleCallback schedules a callback which gets executed
     43  // and the deadline argument is passed correctly.
     44  var handle = requestIdleCallback(this.step_func(function(deadline) {
     45    assert_unreached("callback should not be called if canceled with cancelIdleCallback");
     46  }));
     47  cancelIdleCallback(handle);
     48  step_timeout(this.step_func_done(), 200);
     49 }, 'cancelIdleCallback cancels callbacks');
     50 
     51 </script>
     52 <h1>Basic requestIdleCallback Tests</h1>
     53 <div id="log"></div>