test/built-ins/Map/prototype/forEach/callback-result-is-abrupt.js


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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 23.1.3.5
description: >
  Returns error from callback result is abrupt.
info: |
  Map.prototype.forEach ( callbackfn [ , thisArg ] )

  ...
  5. If thisArg was supplied, let T be thisArg; else let T be undefined.
  6. Let entries be the List that is the value of M’s [[MapData]] internal slot.
  7. Repeat for each Record {[[key]], [[value]]} e that is an element of
  entries, in original key insertion order
    a. If e.[[key]] is not empty, then
      i. Let funcResult be Call(callbackfn, T, «e.[[value]], e.[[key]], M»).
      ii. ReturnIfAbrupt(funcResult).
  ...
flags: [noStrict]
---*/

var map = new Map([[0, 0]]);

assert.throws(Test262Error, function() {
  map.forEach(function() {
    throw new Test262Error();
  });
});