1 files changed, 10 insertions, 0 deletions
diff --git a/testing/web-platform/tests/websockets/stream/tentative/close.any.js b/testing/web-platform/tests/websockets/stream/tentative/close.any.js
index 098caf31c8..ad41dc6e2e 100644
--- a/testing/web-platform/tests/websockets/stream/tentative/close.any.js
+++ b/testing/web-platform/tests/websockets/stream/tentative/close.any.js
@@ -1,6 +1,7 @@
 // META: script=../../constants.sub.js
 // META: script=resources/url-constants.js
 // META: global=window,worker
+// META: variant=?default
 // META: variant=?wss
 // META: variant=?wpt_flags=h2
 
@@ -108,6 +109,15 @@ promise_test(async () => {
                             'one second should have elapsed');
 }, 'writer close() promise should not resolve until handshake completes');
 
+promise_test(async t => {
+  const wss = new WebSocketStream(`${BASEURL}/passive-close-abort`);
+  await wss.opened;
+  wss.close({closeCode: 4000, reason: 'because'});
+  const error = await wss.closed.then(t.unreached_func('closed should reject'), e => e);
+  assert_equals(error.constructor, WebSocketError, 'error should be WebSocketError');
+  assert_equals(error.closeCode, 1006, 'close code should be Abnormal Closure');
+}, 'incomplete closing handshake should be considered unclean close');
+
 const abortOrCancel = [
   {
     method: 'abort',