test_bug1104732.html

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https://bugzilla.mozilla.org/show_bug.cgi?id=1104732

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  <meta charset="utf-8">

  <title>Test for Bug 1104732</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

  <script type="application/javascript">

  /** Test for Bug 1104732 **/

  // Expected order of the values of the "state" variable:

  // Test starting

  // defer

  // DOMContentLoaded

  // load

  // In the meantime, the async script load should happen before load.

  // Ideally, we would want to assert that it happens after DOMContentLoaded,

  // because it shouldn't be holding up DOMContentLoaded, but there is

  // no *guarantee* that this is the case, so we cannot assert it.

  var state = "Test starting";

  var asyncState = "not loaded";

  SimpleTest.waitForExplicitFinish();

  is(document.readyState, "loading", "Document should have been loading.");

  document.addEventListener("DOMContentLoaded", function() {

    is(document.readyState, "interactive", "readyState should be interactive during DOMContentLoaded.");

    is(state, "defer", "Bad state upon DOMContentLoaded");

    state = "DOMContentLoaded";

    // This doesn't work (see above), but we can't "todo" this assertion either, because

    // it will sometimes be the case...

    // isnot(asyncState, "loaded", "Async script should not have delayed domcontentloaded");

});

  window.addEventListener("load", function() {

    is(document.readyState, "complete", "readyState should be complete during load.");

    is(state, "DOMContentLoaded", "Bad state upon load");

    state = "load";

    is(asyncState, "loaded", "Async script should be loaded upon document load event");

    SimpleTest.finish();

});

  </script>

  <script defer src="file_defer_bug1104732.js"></script>

  <script async src="file_async_bug1104732.sjs"></script>

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<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1104732">Mozilla Bug 1104732</a>

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<div id="content" style="display: none">

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<pre id="test">

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