1 files changed, 19 insertions, 0 deletions
diff --git a/testing/web-platform/tests/websockets/Close-undefined.any.js b/testing/web-platform/tests/websockets/Close-undefined.any.js
new file mode 100644
index 0000000000..e24ef0c3db
--- /dev/null
+++ b/testing/web-platform/tests/websockets/Close-undefined.any.js
@@ -0,0 +1,19 @@
+// META: script=constants.sub.js
+// META: variant=?default
+// META: variant=?wpt_flags=h2
+// META: variant=?wss
+
+var test = async_test();
+
+var wsocket = CreateWebSocket(false, false);
+var isOpenCalled = false;
+
+wsocket.addEventListener('open', test.step_func(function(evt) {
+  isOpenCalled = true;
+  wsocket.close(undefined);
+}), true);
+
+wsocket.addEventListener('close', test.step_func(function(evt) {
+  assert_true(isOpenCalled, 'open event must fire');
+  test.done();
+}), true);