JSTests/test262/test/built-ins/String/raw/returns-abrupt-from-next-key-toString.js

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 21.1.2.4
description: >
  Returns abrupt from nextKey.
info: |
  21.1.2.4 String.raw ( template , ...substitutions )

  ...
  10. Let stringElements be a new List.
  11. Let nextIndex be 0.
  12. Repeat
    a. Let nextKey be ToString(nextIndex).
    b. Let nextSeg be ToString(Get(raw, nextKey)).
    c. ReturnIfAbrupt(nextSeg).
  ...
---*/

var obj = {
  raw: {
    length: 1,
    '0': {
      toString: function() {
        throw new Test262Error();
      }
    }
  }
};

assert.throws(Test262Error, function() {
  String.raw(obj);
});