1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/named-groups/duplicate-names-matchall.js b/js/src/tests/test262/built-ins/RegExp/named-groups/duplicate-names-matchall.js
new file mode 100644
index 0000000000..fea434f83d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/named-groups/duplicate-names-matchall.js
@@ -0,0 +1,31 @@
+// |reftest| skip -- regexp-duplicate-named-groups is not supported
+// Copyright 2022 Igalia S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: String.prototype.search behavior with duplicate named capture groups
+esid: prod-GroupSpecifier
+includes: [compareArray.js,compareIterator.js]
+features: [regexp-duplicate-named-groups]
+---*/
+
+function matchesIterator(iterator, expected) {
+  assert.compareIterator(iterator, expected.map(e => {
+    return v => assert.compareArray(v, e);
+  }));
+}
+
+matchesIterator("bab".matchAll(/(?<x>a)|(?<x>b)/g),
+  [
+    ["b", undefined, "b"],
+    ["a", "a", undefined],
+    ["b", undefined, "b"],
+  ]);
+matchesIterator("bab".matchAll(/(?<x>b)|(?<x>a)/g),
+  [
+    ["b", "b", undefined],
+    ["a", undefined, "a"],
+    ["b", "b", undefined],
+  ]);
+
+reportCompare(0, 0);