Quelle test_suppressed_microtasks.html

Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/base/test/test_suppressed_microtasks.html

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Test microtask suppression</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
  <script>
    SimpleTest.waitForExplicitFinish();

    var previousTask = -1;
    function test() {
      let win = window.open("about:blank");
      win.onmessage = function() {
        win.start = win.performance.now();
        win.didRunMicrotask = false;
        win.onmessage = function() {
          ok(win.didRunMicrotask, "Should have run a microtask.");
          let period = win.performance.now() - win.start;
          win.opener.ok(
            period < 200,
            "Running a task should be fast. Took " + period + "ms.");
          win.onmessage = null;
        }
        win.queueMicrotask(function() { win.didRunMicrotask = true; });
        win.postMessage("measurementMessage", "*");
      }
      win.postMessage("initialMessage", "*");

      const last = 500000;
      for (let i = 0; i < last + 1; ++i) {
        window.queueMicrotask(function() {
          // Check that once microtasks are unsuppressed, they are handled in
          // the correct order.
          if (previousTask !=  i - 1) {
            // Explicitly optimize out cases which pass.
            ok(false, "Microtasks should be handled in order.");
          }
          previousTask = i;
          if (i == last) {
            win.close();
            SimpleTest.finish();
          }
        });
      }

      // Synchronous XMLHttpRequest suppresses microtasks.
      var xhr = new XMLHttpRequest();
      xhr.open("GET", "slow.sjs", false);
      xhr.send();
      is(previousTask, -1, "Shouldn't have run microtasks during a sync XHR.");
    }
  </script>
</head>
<body onload="test()">
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
</body>
</html>

Messung V0.5 in Prozent

¤ Dauer der Verarbeitung: 0.3 Sekunden ¤

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PVS Prover

Isabelle Prover

NIST Cobol Testsuite

Cephes Mathematical Library

Vienna Development Method

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