"use strict";

const last = require("../../src/deps/fp/last");

const lastIndex = require("../../src/deps/fp/lastIndex");

const arrayToObj = require("../../src/deps/cast/arrayToObj"); // https://github.com/jashkenas/underscore/blob/master/test/arrays.js#L61


const eq = (x, y, msg) => expect(x).toEqual(y);

test('last', () => {
  const obj = arrayToObj([1, 2, 3]);
  eq(last(obj), 3);
  eq(last([1, 2, 3]), 3, 'can pull out the last element of an array');
  eq(last(null), undefined, 'returns undefined when called on null');
  var arr = [];
  arr[-1] = 'boo';
  eq(last(arr), 'boo', 'return undefined when called on a empty array');
});
test.skip('last with index @TODO', () => {
  // let result = (function() { return _(arguments).last() })(1, 2, 3, 4)
  // eq(result, 4, 'works on an arguments object')
  // result = map([[1, 2, 3], [1, 2, 3]], last)
  // eq(result, [3, 3], 'works well with map')
  eq(last([1, 2, 3], 0), [], 'returns an empty array when n <= 0 (0 case)');
  eq(last([1, 2, 3], -1), [], 'returns an empty array when n <= 0 (negative case)');
  eq(last([1, 2, 3], 2), [2, 3], 'can fetch the last n elements');
  eq(last([1, 2, 3], 5), [1, 2, 3], 'returns the whole array if n > length'); // changed to -1

  eq(last(null), void 0, 'returns undefined when called on null');
  var arr = [];
  arr[-1] = 'boo';
  eq(last(arr), void 0, 'return undefined when called on a empty array');
});