js/src/tests/test262/built-ins/Array/from/iter-get-iter-val-err.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.
/*---
esid: sec-array.from
description: Error retrieving value of iterator result
info: |
    [...]
    6. If usingIterator is not undefined, then
       [...]
       g. Repeat
          [...]
          v. Let nextValue be IteratorValue(next).
          vi. ReturnIfAbrupt(nextValue).
features: [Symbol.iterator]
---*/

var itemsPoisonedIteratorValue = {};
var poisonedValue = {};
Object.defineProperty(poisonedValue, 'value', {
  get: function() {
    throw new Test262Error();
  }
});
itemsPoisonedIteratorValue[Symbol.iterator] = function() {
  return {
    next: function() {
      return poisonedValue;
    }
  };
};

assert.throws(Test262Error, function() {
  Array.from(itemsPoisonedIteratorValue);
}, 'Array.from(itemsPoisonedIteratorValue) throws a Test262Error exception');

reportCompare(0, 0);