mozilla-central/testing/web-platform/tests/websockets/bufferedAmount-unchanged-by-sync-xhr.any.js (file symbol)

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// META: script=constants.sub.js
// META: global=window,dedicatedworker,sharedworker
// META: variant=?default
// META: variant=?wss
// META: variant=?wpt_flags=h2
async_test(t => {
const ws = CreateWebSocket(false, false);
ws.onopen = t.step_func(() => {
ws.onclose = ws.onerror = null;
assert_equals(ws.bufferedAmount, 0);
ws.send('hello');
assert_equals(ws.bufferedAmount, 5);
// Stop execution for 1s with a sync XHR.
const xhr = new XMLHttpRequest();
xhr.open('GET', '/common/blank.html?pipe=trickle(d1)', false);
xhr.send();
assert_equals(ws.bufferedAmount, 5);
ws.close();
t.done();
});
ws.onerror = ws.onclose = t.unreached_func('open should succeed');
}, 'bufferedAmount should not be updated during a sync XHR');
done();