var Flattener = require("./flatten-array.js");

describe("FlattenArray", function() {
  var flattener = new Flattener();
    it('flattens a nested list', function(){
		  expect(flattener.flatten([[]])).toEqual([]);
	  });
    xit('flattens a 2 level nested list', function(){
		  expect(flattener.flatten([1,[2,3,4],5])).toEqual([1, 2, 3, 4, 5]);
	  });
    xit('flattens a  3 level nested list', function(){
		  expect(flattener.flatten([1,[2,3,4],5,[6,[7,8]]])).toEqual([1, 2, 3, 4, 5, 6, 7, 8]);
	  });
	  xit('flattens a 5 level nested list', function(){
		  expect(flattener.flatten([0, 2, [[2, 3], 8, 100, 4,[[[50]]]], -2])).toEqual([0, 2, 2, 3, 8, 100, 4, 50, -2]);
	  });
    xit('flattens a 6 level nest list', function(){
		  expect(flattener.flatten([1,[2,[[3]],[4,[[5]]],6,7],8])).toEqual([1,2,3,4,5,6,7,8]);
	  });
    xit('flattens a 6 level nest list with null values', function(){
		  expect(flattener.flatten([0, 2, [[2, 3], 8, [[100]], null, [[null]]], -2])).toEqual([0,2,2,3,8,100,-2]);
	  });
    xit('returns an empty list if all values in nested list are null', function(){
		  expect(flattener.flatten([null,[[[null]]],null,null,[[null,null],null],null])).toEqual([]);
	  });
});