test262/test/built-ins/Array/from/source-object-iterator-1.js

// Copyright 2015 Microsoft Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.

/*---
description: Source object has iterator which throws
esid: sec-array.from
es6id: 22.1.2.1
---*/

var array = [ 2, 4, 8, 16, 32, 64, 128 ];
var obj = {
    [Symbol.iterator]() {
        return {
            index: 0,
            next() {
                throw new Test262Error();
            },
            isDone : false,
            get val() {
                this.index++;
                if (this.index > 7) {
                    this.isDone = true;
                }
                return 1 << this.index;
            }
        };
    }
};
assert.throws(Test262Error, function(){Array.from(obj);});