text: 'use strict';
  
  var negBinAdd = require('../../toolbox/negBinAdd');
  var expect = require('chai').expect;
  
  describe('negBinAdd - O(n)', function(){
    it('should add negative numbers', function() {
      expect(negBinAdd([0, 1], [1, 0, 1, 1])).to.be.deep.equal([1, 1, 1, 1]);
    });
  
    it('should add positive numbers', function() {
      expect(negBinAdd([0, 1, 1], [1, 1, 1])).to.be.deep.equal([1, 0, 1]);
    });
  
    it('should add opposite numbers', function() {
      expect(negBinAdd([1, 0, 1, 1], [1, 1, 1])).to.be.deep.equal([]);
    });
  
    it('should add positive and negative numbers', function() {
      expect(negBinAdd([1, 0, 1, 1], [0, 1, 1])).to.be.deep.equal([1, 1]);
    });
  });