media/video-source-inserted.html

<!doctype html>
<html>
    <head>
        <title>networkState after inserting &lt;source&gt; test</title>
        <script src=video-test.js></script>
    </head>
    <body>
        <video controls><source></video>

        <p>Test that a &lt;source&gt; inserted when networkState is NETWORK_NO_SOURCE triggers
        resource selection, immediately changing networkState to NETWORK_NO_SOURCE.</p>

        <script>
            consoleWrite("&lt;source&gt; inserted by the parser.");
            video = document.querySelector('video');
            testExpected("video.networkState", HTMLMediaElement.prototype.NETWORK_NO_SOURCE, "==");

            consoleWrite("<br>&lt;video&gt; created with script.");
            video = document.createElement('video');
            testExpected("video.networkState", HTMLMediaElement.prototype.NETWORK_EMPTY, "==");
            consoleWrite("&lt;source&gt; inserted by script.");
            video.appendChild(document.createElement('source'));
            testExpected("video.networkState", HTMLMediaElement.prototype.NETWORK_NO_SOURCE, "==");
            if (window.testRunner)
                testRunner.notifyDone();
        </script>

    </body>
</html>