1 files changed, 24 insertions, 0 deletions
diff --git a/dom/base/test/file_current_inner_window.html b/dom/base/test/file_current_inner_window.html
new file mode 100644
index 0000000000..8156e29000
--- /dev/null
+++ b/dom/base/test/file_current_inner_window.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title></title>
+  <script>
+    function isCurrentWinnerWindow() {
+      // If we are the current inner window for our BrowsingContext, bare word
+      // access to `name` will return "". If we are not, it will throw.
+      // Note that this is *not* the same as accessing `window.name`, which
+      // will go through our WindowProxy, which will always forward it to the
+      // currently-active inner window.
+      try {
+        void name;
+        return true;
+      } catch (e) {
+        return false;
+      }
+    }
+  </script>
+</head>
+<body>
+</body>
+</html>