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<!DOCTYPE html>
<meta charset="utf-8">
<title>Sandboxing: starting a presentation from a nested context fails when allow-presentation is not set</title>
<link rel="author" title="Francois Daoust" href="https://www.w3.org/People/#fd">
<link rel="help" href="http://w3c.github.io/presentation-api/#dom-presentationrequest-start">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="childFrame" sandbox="allow-scripts" style="display:none" src="support/iframe.html"></iframe>
<p>Click the button below to start the manual test. If prompted to select a device, please dismiss the dialog box. The test passes if a "PASS" result appears.</p>
<button id="presentBtn" onclick="startPresentationTest()">Start Presentation Test</button>
<script>
setup({explicit_timeout: true});
var presentBtn = document.getElementById('presentBtn');
var childFrame = document.getElementById('childFrame');
function startPresentationTest() {
presentBtn.disabled = true;
async_test(function (t) {
childFrame.contentWindow.postMessage('start', '*');
window.addEventListener('message', t.step_func(function (ev) {
assert_equals(ev.data, 'SecurityError',
'Presentation sandboxing did not work as expected.');
t.done();
}));
});
}
</script>
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