1 files changed, 12 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/data/file_script_bad.js b/toolkit/components/extensions/test/xpcshell/data/file_script_bad.js
new file mode 100644
index 0000000000..ff4572865b
--- /dev/null
+++ b/toolkit/components/extensions/test/xpcshell/data/file_script_bad.js
@@ -0,0 +1,12 @@
+"use strict";
+
+window.failure = true;
+window.addEventListener(
+  "load",
+  () => {
+    let el = document.createElement("div");
+    el.setAttribute("id", "bad");
+    document.body.appendChild(el);
+  },
+  { once: true }
+);