test262/test/built-ins/RegExp/named-groups/duplicate-names-group-prope...

25 lines
718 B
JavaScript

// Copyright 2022 Kevin Gibbons. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Enumeration order of the groups object with duplicate named capture groups
esid: prod-GroupSpecifier
features: [regexp-duplicate-named-groups]
includes: [compareArray.js]
---*/
let regexp = /(?<y>a)(?<x>a)|(?<x>b)(?<y>b)/;
assert.compareArray(
Object.keys(regexp.exec("aa").groups),
["y", "x"],
"property enumeration order of the groups object is based on source order, not match order"
);
assert.compareArray(
Object.keys(regexp.exec("bb").groups),
["y", "x"],
"property enumeration order of the groups object is based on source order, not match order"
);