1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/reduce/value-throws-iterator-not-closed.js b/js/src/tests/non262/Iterator/prototype/reduce/value-throws-iterator-not-closed.js
new file mode 100644
index 0000000000..7b43eedcc6
--- /dev/null
+++ b/js/src/tests/non262/Iterator/prototype/reduce/value-throws-iterator-not-closed.js
@@ -0,0 +1,25 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally
+
+class TestError extends Error {}
+class TestIterator extends Iterator {
+  next() {
+    return new Proxy({done: false}, {get: (target, key, receiver) => {
+      if (key === 'value')
+        throw new TestError();
+      return 0;
+    }});
+  }
+
+  closed = false;
+  return() {
+    closed = true;
+  }
+}
+
+const iterator = new TestIterator();
+assertEq(iterator.closed, false, 'iterator starts unclosed');
+assertThrowsInstanceOf(() => iterator.reduce((x, y) => x + y, 0), TestError);
+assertEq(iterator.closed, false, 'iterator remains unclosed');
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);