test262/test/language/statements/for-of/string-astral.js

30 lines
714 B
JavaScript

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: String traversal using for..of (astral symbols)
info: >
String literals should be able to be traversed using a `for...of` loop. The
loop body should execute once for each astral symbol.
es6id: 13.6.4
---*/
var string = 'a\ud801\udc28b\ud801\udc28';
var first = 'a';
var second = '𐐨';
var third = 'b';
var fourth = '𐐨';
var iterationCount = 0;
for (var value of string) {
assert.sameValue(value, first);
first = second;
second = third;
third = fourth;
fourth = null;
iterationCount += 1;
}
assert.sameValue(iterationCount, 4);