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<!doctype html>
<title>stable state in beforeunload</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<button>click this button and cancel navigation</button>
<a href="data:text/plain,FAIL: did not cancel navigation"></a>
<script>
async_test(function(t) {
window.onbeforeunload = t.step_func(function(event) {
var message = "foo bar";
event.returnValue = message;
return message;
});
var button = document.querySelector('button');
var link = document.querySelector('a');
button.onclick = t.step_func(function() {
v = document.createElement('video');
v.src = 'data:,';
assert_equals(v.networkState, v.NETWORK_NO_SOURCE, 'networkState before dialog');
assert_equals(v.currentSrc, '', 'currentSrc before dialog');
link.click();
assert_equals(v.networkState, v.NETWORK_NO_SOURCE, 'networkState after dialog');
assert_equals(v.currentSrc, '', 'currentSrc after dialog');
t.done();
window.onbeforeonload = null;
button.remove();
});
});
</script>