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

25 lines
595 B
JavaScript

// Copyright 2015 Microsoft Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.
/*---
description: >
Source is an object with length property and one item is deleted
from the source
es6id: 22.1.2.1
---*/
var array = [2, 4, 0, 16];
var expectedArray = [2, 4, , 16];
var obj = {
length : 4,
0 : 2,
1 : 4,
2 : 0,
3 : 16
};
delete obj[2];
var a = Array.from(obj);
for (var j = 0; j < expectedArray.length; j++) {
assert.sameValue(a[j], expectedArray[j], "Elements mismatch at " + j + ".");
}