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<!DOCTYPE html>
<html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<title>XMLHttpRequest: sync requests should block events on pending async requests</title>
</head>
<body>
<div id="log"></div>
<script type="text/javascript">
var test = async_test();
var expect = ['sync 4', 'async 2', 'async 3', 'async 4']
var actual = []
test.step(function()
{
var xhr_async = new XMLHttpRequest()
xhr_async.open('GET', 'resources/delay.py?ms=1000', true) // first launch an async request, completes in 1 second
xhr_async.onreadystatechange = test.step_func(() => {
actual.push('async ' + xhr_async.readyState)
if(xhr_async.readyState === 4 && actual.indexOf('sync 4')>-1){
VerifyResult()
}
});
xhr_async.send()
test.step_timeout(() => {
var xhr_sync = new XMLHttpRequest();
xhr_sync.open('GET', 'resources/delay.py?ms=2000', false) // here's a sync request that will take 2 seconds to finish
xhr_sync.onreadystatechange = test.step_func(() => {
actual.push('sync ' + xhr_sync.readyState)
if(xhr_sync.readyState === 4 && actual.indexOf('async 4')>-1){
VerifyResult()
}
});
xhr_sync.send()
}, 10);
function VerifyResult()
{
test.step(function()
{
assert_array_equals(actual, expect);
test.done();
});
};
});
</script>
</body>
</html>
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