<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="/common/utils.js"></script
</head>
<body>
<script>
async_test((t) => {
    var bc = new BroadcastChannel('single-request-to-server');
    let w = open("resources/single-request-to-server-popup.py?token=" + token());
    bc.onmessage = t.step_func((event) => {
        assert_equals(event.data, "not_already_loaded");
        assert_true(w.closed, "Should switch browsing context group");
        t.done();
    });
}, "Make sure we make a single request to the HTTP server when switching browsing context group");
</script>
</body>
</html>