1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Map/groupBy/iterator-next-throws.js b/js/src/tests/test262/built-ins/Map/groupBy/iterator-next-throws.js
new file mode 100644
index 0000000000..024452ccdd
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+++ b/js/src/tests/test262/built-ins/Map/groupBy/iterator-next-throws.js
@@ -0,0 +1,36 @@
+// Copyright (c) 2023 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-map.groupby
+description: Map.groupBy throws when iterator next throws
+info: |
+  Map.groupBy ( items, callbackfn )
+
+  ...
+
+  GroupBy ( items, callbackfn, coercion )
+
+  6. Repeat,
+    b. Let next be ? IteratorStep(iteratorRecord).
+
+  ...
+features: [array-grouping, Map, Symbol.iterator]
+---*/
+
+const throwingIterator = {
+  [Symbol.iterator]: function () {
+    return this;
+  },
+  next: function next() {
+    throw new Test262Error('next() method was called');
+  }
+};
+
+assert.throws(Test262Error, function () {
+  Map.groupBy(throwingIterator, function () {
+    return 'key';
+  });
+});
+
+reportCompare(0, 0);