third_party/web_platform_tests/websockets/cookies/007.html

<!doctype html>
<title>WebSockets: when to process set-cookie fields in ws response</title>
<meta name=timeout content=long>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=../constants.js?pipe=sub></script>
<div id=log></div>
<script>
var cookie_id = ((new Date())-0) + '.' + Math.random();
async_test(function(t) {
  t.add_cleanup(function() {
    // remove cookie
    document.cookie = 'ws_test_'+cookie_id+'; Path=/; Expires=Sun, 06 Nov 1994 08:49:37 GMT';
  });
  var ws = new WebSocket(SCHEME_DOMAIN_PORT+'/set-cookie?'+cookie_id);
  ws.onopen = t.step_func(function(e) {
    ws.close();
    assert_regexp_match(document.cookie, new RegExp('ws_test_'+cookie_id+'=test'));
    t.done();
  });
  ws.onerror = ws.onclose = t.step_func(function() {assert_unreached()});

  // sleep for 2 seconds with sync xhr
  var sleep = new XMLHttpRequest();
  sleep.open('GET', '/common/blank.html?pipe=trickle(d2)', false);
  sleep.send(null);

  if (new RegExp('ws_test_'+cookie_id+'=test').test(document.cookie)) {
    assert_unreached('cookie was set during script execution');
  }
}, null, {timeout:12000});
</script>