test_viewport_resize.html

mozilla-central/dom/html/test/test_viewport_resize.html (file symbol)

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Test Info:

Manifest: dom/html/test/mochitest.toml

<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1135812

-->

<head>

  <title>Test for Bug 1135812</title>

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

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

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1135812">Mozilla Bug 1135812</a>

<p id="display"></p>

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

</div>

<pre id="test">

<iframe style="width: 50px;"

        srcdoc='<picture><source srcset="data:,a" media="(min-width: 150px)" /><source srcset="data:,b" media="(min-width: 100px)" /><img src="data:,c" /></picture>'></iframe>

<script>

    SimpleTest.waitForExplicitFinish();

    addEventListener('load', function() {

        var iframe = document.querySelector('iframe');

        var img = iframe.contentDocument.querySelector('img');

        is(img.currentSrc, 'data:,c');

        img.onload = function() {

            is(img.currentSrc, 'data:,a');

            img.onload = function() {

                is(img.currentSrc, 'data:,b');

                SimpleTest.finish();

            img.onerror = img.onload;

            iframe.style.width = '120px';

};

        img.onerror = img.onload;

        iframe.style.width = '200px';

    }, true);

</script>

</pre>

</body>

</html>