1 files changed, 30 insertions, 0 deletions
diff --git a/testing/web-platform/tests/portals/portals-no-frame-crash.html b/testing/web-platform/tests/portals/portals-no-frame-crash.html
new file mode 100644
index 0000000000..cc94a772c3
--- /dev/null
+++ b/testing/web-platform/tests/portals/portals-no-frame-crash.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+  test(() => {
+    let portal = document.createElement("portal");
+    let xmlDoc = document.implementation.createDocument("", null);
+    xmlDoc.appendChild(portal);
+  }, "inserting a portal element into an XML document shouldn't crash or throw");
+
+  test(() => {
+    let iframe = document.createElement("iframe");
+    document.body.appendChild(iframe);
+    let doc = iframe.contentDocument;
+    iframe.remove();
+    let portal = document.createElement("portal");
+    doc.body.appendChild(portal);
+  }, "inserting a portal element into a detached iframe's document shouldn't crash or throw");
+
+  test(() => {
+    let iframe = document.createElement("iframe");
+    document.body.appendChild(iframe);
+    let doc = iframe.contentDocument;
+    iframe.remove();
+    let portal = doc.createElement("portal");
+    doc.body.appendChild(portal);
+  }, "creating a portal element with a detached iframe's document shouldn't crash or throw");
+</script>
+</body>