1 files changed, 23 insertions, 0 deletions
diff --git a/testing/web-platform/tests/websockets/remove-own-iframe-during-onerror.window.js b/testing/web-platform/tests/websockets/remove-own-iframe-during-onerror.window.js
new file mode 100644
index 0000000000..aa1cf6028f
--- /dev/null
+++ b/testing/web-platform/tests/websockets/remove-own-iframe-during-onerror.window.js
@@ -0,0 +1,23 @@
+// META: script=constants.sub.js
+// META: timeout=long
+// META: variant=?default
+// META: variant=?wss
+// META: variant=?wpt_flags=h2
+
+async_test(t => {
+  window.wsurl = SCHEME_DOMAIN_PORT + '/does-not-exist';
+  let wsframe;
+  window.wsonerror = () => {
+    wsframe.remove();
+    // If this didn't crash then the test passed.
+    t.done();
+  };
+  wsframe = document.createElement('iframe');
+  wsframe.srcdoc = `<script>
+const ws = new WebSocket(parent.wsurl);
+ws.onerror = parent.wsonerror;
+</script>`;
+  onload = () => document.body.appendChild(wsframe);
+}, 'removing an iframe from within an onerror handler should work');
+
+done();