JSTests/test262/test/built-ins/Array/prototype/flatten/null-undefined-elements.js

// Copyright (C) 2018 Shilpi Jain and Michael Ficarra. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.flatten
description: >
    arrays with null, and undefined
includes: [compareArray.js]
features: [Array.prototype.flatten]
---*/

var a = [void 0];

assert(compareArray([1, null, void 0].flatten(), [1, null, undefined]));
assert(compareArray([1,[null, void 0]].flatten(), [1, null, undefined]));
assert(compareArray([[null, void 0], [null, void 0]].flatten(), [null, undefined, null, undefined]));
assert(compareArray([1,[null, a]].flatten(1), [1, null, a]));
assert(compareArray([1,[null, a]].flatten(2), [1, null, undefined]));