test_initial_aboutblank.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test feature policy - Initial about:blank</title>

  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

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

</head>

<body>

<iframe name="parentIframe" allow="fullscreen 'none'" srcdoc="

  <iframe name='regular'></iframe>

  <iframe name='transient'></iframe>

  <script>transient.stop()</script>

"></iframe>

<script type="text/javascript">

add_task(function testAboutBlank() {

  isDeeply(frames[0].transient.document.featurePolicy.allowedFeatures(),

           frames[0].document.featurePolicy.allowedFeatures(),

           "check allowed feature list for initial about:blank");

  isDeeply(frames[0].regular.document.featurePolicy.allowedFeatures(),

           frames[0].document.featurePolicy.allowedFeatures(),

           "check allowed feature list for real load about:blank");

});

</script>

</body>

</html>