1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/lazy-methods-throw-on-reentry.js b/js/src/tests/non262/Iterator/prototype/lazy-methods-throw-on-reentry.js
new file mode 100644
index 0000000000..1095842f55
--- /dev/null
+++ b/js/src/tests/non262/Iterator/prototype/lazy-methods-throw-on-reentry.js
@@ -0,0 +1,18 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
+
+const methods = [
+  iter => iter.map,
+  iter => iter.filter,
+  iter => iter.flatMap,
+];
+
+for (const method of methods) {
+  const iter = [1].values();
+  const iterMethod = method(iter);
+  let iterHelper;
+  iterHelper = iterMethod.call(iter, x => iterHelper.next());
+  assertThrowsInstanceOf(() => iterHelper.next(), TypeError);
+}
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);