1 files changed, 21 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/file_localStorage.html b/toolkit/components/antitracking/test/browser/file_localStorage.html
new file mode 100644
index 0000000000..54bad94bc9
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/file_localStorage.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Bug 1663192 - Accessing localStorage in a file urls</title>
+</head>
+<script>
+  window.addEventListener("DOMContentLoaded", () => {
+    let result = document.getElementById("result");
+
+    try {
+      window.localStorage.setItem("foo", "bar");
+      result.textContent = "PASS";
+    } catch (e) {
+      result.textContent = "FAIL";
+    }
+  }, { once: true });
+</script>
+<body>
+<a id="result"></a>
+</body>
+</html>