1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/ecma_7/AsyncFunctions/clone.js b/js/src/tests/ecma_7/AsyncFunctions/clone.js
new file mode 100644
index 000000000..2a4d5f8e0
--- /dev/null
+++ b/js/src/tests/ecma_7/AsyncFunctions/clone.js
@@ -0,0 +1,22 @@
+// |reftest| skip-if(!xulRuntime.shell) -- needs clone, cloneAndExecuteScript, drainJobQueue
+
+// Async function cannot be cloned.
+assertThrowsInstanceOf(() => clone(async function f() {}), TypeError);
+
+// unwrapped async function can be cloned.
+let g = newGlobal();
+cloneAndExecuteScript(`
+async function f() {
+  var a = await 1;
+  var b = await 2;
+  var c = await 3;
+  return a + b + c;
+}
+var V;
+f().then(v => V = v);
+drainJobQueue();
+`, g);
+assertEq(g.V, 6);
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);