Test cases for reverse function in Array objects

S22.1.3.20_A1_T1.js

// Copyright 2018 Owen Mak.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
info: |
    The elements of the array are rearranged so as to reverse their order.
    The object is returned as the result of the call
esid: sec-array.prototype.reverse
es6id: 22.1.3.20_A1_T2
description: Checking this algorithm, elements are objects and primitives
  ...

includes: [testTypedArray.js, compareArray.js]
---*/


var x = [1,2,3,4];
var y = [4,3,2,1];
var reverse = x.reverse();
//Check #1
//ensure return type of array after reverse remains as object
assert.sameValue(typeof(reverse), "object", "typeof(x.reverse()) === 'object'");

//Check #2
//returns same object
assert.sameValue(reverse, x, "returns the same object");

//Check #3
assert.sameValue(reverse[0], 4, "reverse[0] === 4");
assert.sameValue(reverse[1], 3, "reverse[1] === 3");
assert.sameValue(reverse[2], 2, "reverse[2] === 2");
assert.sameValue(reverse[3], 1, "reverse[3] === 1");

//Check #4
//using compareArray function from typedArray to compare the arrays
assert(compareArray(reverse, [4, 3, 2, 1]));
assert(compareArray(reverse, y));

//Check#5
//check for non-numeric values
var x = [1,2,3,4];
x.foo = "foo";
y.foo = "foo";
var reverse = x.reverse();
assert.sameValue(reverse.foo, "foo", "reverse.foo === 'foo'");
assert (compareArray(reverse, y));

//Check #6
//Check for string lengths
assert.sameValue(x.length, 4, "length is 4");
assert.sameValue(x.length, reverse.length, "length is preserved after reverse");