1 files changed, 28 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/lazy_non_shared_in_worker.js b/js/xpconnect/tests/unit/lazy_non_shared_in_worker.js
new file mode 100644
index 0000000000..47e1dede92
--- /dev/null
+++ b/js/xpconnect/tests/unit/lazy_non_shared_in_worker.js
@@ -0,0 +1,28 @@
+onmessage = event => {
+  const lazy1 = {};
+  const lazy2 = {};
+
+  ChromeUtils.defineESModuleGetters(lazy1, {
+    GetX: "resource://test/esm_lazy-1.sys.mjs",
+  }, {
+    global: "current",
+  });
+
+  ChromeUtils.defineESModuleGetters(lazy2, {
+    GetX: "resource://test/esm_lazy-1.sys.mjs",
+  }, {
+    global: "contextual",
+  });
+
+  lazy1.GetX; // delazify before import.
+  lazy2.GetX; // delazify before import.
+
+  const ns = ChromeUtils.importESModule("resource://test/esm_lazy-1.sys.mjs", {
+    global: "current",
+  });
+
+  const equal1 = ns.GetX == lazy1.GetX;
+  const equal2 = ns.GetX == lazy2.GetX;
+
+  postMessage({ equal1, equal2 });
+};