chromium/third_party/blink/web_tests/external/wpt/websockets/interfaces/WebSocket/close/close-connecting.html

<!doctype html>
<title>WebSockets: close() when connecting</title>
<meta name=timeout content=long>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=../../../constants.sub.js></script>
<meta name="variant" content="?default">
<meta name="variant" content="?wss">
<div id=log></div>
<script>
async_test(function(t) {
  var ws = new WebSocket(SCHEME_DOMAIN_PORT+'/sleep_10_v13');
  t.step_timeout(function() {
    assert_equals(ws.readyState, ws.CONNECTING);
    ws.close();
    assert_equals(ws.readyState, ws.CLOSING);
    ws.onclose = t.step_func(function(e) {
      assert_equals(ws.readyState, ws.CLOSED);
      assert_equals(e.wasClean, false);
      t.done();
    });
  }, 1000);
  ws.onopen = ws.onclose = t.unreached_func();
});
</script>