JSTests/test262/test/built-ins/Array/prototype/flat/non-numeric-depth-should-not-throw.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.flat
description: >
    if the argument is a string or object, the depthNum is 0
includes: [compareArray.js]
features: [Array.prototype.flat]
---*/

var a = [1, [2]];
var expected = a;

// non integral string depthNum is converted to 0
var depthNum = 'TestString';
var actual = a.flat(depthNum);
assert(compareArray(actual, expected), 'non integral string depthNum');

// object type depthNum is converted to 0
depthNum = {};
actual = a.flat(depthNum);
assert(compareArray(actual, expected), 'object type depthNum');

// negative infinity depthNum is converted to 0
depthNum = Number.NEGATIVE_INFINITY;
actual = a.flat(depthNum);
assert(compareArray(actual, expected), 'negative infinity depthNum');

// positive zero depthNum is converted to 0
depthNum = +0;
actual = a.flat(depthNum);
assert(compareArray(actual, expected), 'positive zero depthNum');

// negative zero depthNum is converted to 0
depthNum = -0;
actual = a.flat(depthNum);
assert(compareArray(actual, expected), 'negative zero depthNum');

// integral string depthNum is converted to an integer
depthNum = '1';
actual = a.flat(depthNum);
expected = [1, 2]
assert(compareArray(actual, expected), 'integral string depthNum');