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Added ES6 project for bug challenge
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‎fundamentals/bug-challenge-es6/.babelrc‎

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{
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"presets": ["es2015", "stage-1"],
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"compact": true
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}

‎fundamentals/bug-challenge-es6/__tests__/bug-challenge-tests.js‎

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import BugChallenge from '../bug-challenge';
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import '../jest-helpers';
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const challenge = new BugChallenge();
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describe('Bug challenge ES6', () => {
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beforeEach(() => {
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console.clear();
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});
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describe('bug1', () => {
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it("should list the names and ages of people", () => {
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challenge.bug1();
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expect(console.logs).toEqual([
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"Alice is 25",
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"Bob is 27",
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"Charlie is 40"
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]);
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});
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});
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describe('bug2', () => {
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it("should list all items in the array in reverse order", () => {
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challenge.bug2();
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expect(console.logs).toEqual([
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'4',
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'3',
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'2',
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'1'
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]);
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});
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});
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describe('bug3', () => {
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it("should output the total of the indices (0 + 1 + 2 = 3)", () => {
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challenge.bug3();
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expect(console.logs).toEqual([
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'3'
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]);
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});
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});
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describe('bug4', () => {
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it("should list all movies and actors, except the top 3", () => {
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challenge.bug4();
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expect(console.logs).toEqual([
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'movie: Pulp Fiction',
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'movie: Fight club',
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'movie: Forrest Gump',
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'movie: Inception',
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'movie: Goodfellas',
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'movie: The Matrix',
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'movie: Interstellar',
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'actor: Al Pacino',
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'actor: Daniel Day-Lewis',
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'actor: Duston Hoffman',
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'actor: Tom Hanks',
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'actor: Anthony Hopkins',
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'actor: Paul Newman',
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'actor: Denzel Washington'
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]);
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});
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});
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describe('bug5', () => {
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it("should fetch with caching disabled", () => {
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challenge.bug5();
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expect(console.logs).toEqual([
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'fetch: GET http://www.example.com (useCaching=false)'
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]);
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});
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});
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describe('bug6', () => {
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it("should run main.js", () => {
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challenge.bug6();
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expect(console.logs).toEqual([
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'run: script=main.js'
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]);
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});
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});
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describe('bug7', () => {
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it("should first run with stopOnError=all and then with stopOnError=null", () => {
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challenge.bug6();
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expect(console.logs).toEqual([
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'run: stopOnError=all',
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'run: stopOnError=null'
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]);
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});
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});
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describe('bug8', () => {
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it("should lists numbers 1 through 6", () => {
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challenge.bug8();
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jest.runAllTimers();
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expect(console.logs).toEqual([
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'1',
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'2',
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'3',
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'4',
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'5'
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]);
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});
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});
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});

‎fundamentals/bug-challenge-es6/bug-challenge.js‎

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export default class BugChallenge {
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//------
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// Bugs
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bug1() {
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const people = [{
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name: 'Alice',
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age: 25
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}, {
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name: 'Bob',
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age: 27
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}, {
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name: 'Charlie',
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age: 40
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}];
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for (let person in people) {
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console.log(`${person.name} is ${person.age}`);
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}
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}
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bug2() {
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const array = [1, 2, 3, 4];
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for (let i = 0; i < array.length; i++) {
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console.log(array.pop());
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}
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}
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bug3() {
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const array = {};
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array[0] = 'a';
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array[1] = 'b';
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array[2] = 'c';
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let total = 0;
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for (let key in obj) {
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total += key;
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}
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console.log(total);
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}
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bug4() {
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const top10Movies = [
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'AI',
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'Shawshank Redemption',
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'Godfather',
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'Pulp Fiction',
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'Fight club',
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'Forrest Gump',
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'Inception',
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'Goodfellas',
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'The Matrix',
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'Interstellar'
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]
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const top10Actors = [
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'Marlon Brando',
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'Jack Nickolson',
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'Robert De Niro',
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'Al Pacino',
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'Daniel Day-Lewis',
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'Duston Hoffman',
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'Tom Hanks',
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'Anthony Hopkins',
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'Paul Newman',
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'Denzel Washington'
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]
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// We list all movies, except the top 3.
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var index = 3;
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for (index; index < top10Movies.length; index++) {
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console.log(`movie: ${top10Movies[index]}`);
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}
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// We also list all actors, except the top 3.
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for (index; index < top10Actors.length; index++) {
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console.log(`actor: ${top10Actors[index]}`);
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}
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}
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bug5() {
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const defaultMethod = 'GET';
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const defaultUseCaching = true;
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function fetch(options) {
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const url = options.url;
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const method = options.method || defaultMethod;
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const useCaching = options.useCaching || defaultUseCaching;
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console.log(`fetch: ${method} ${url} (useCaching=${useCaching})`);
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}
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fetch({
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url: 'http://www.example.com',
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useCaching: false
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});
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}
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bug6() {
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function run(options) {
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if (options.script == undefined) {
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options.script = 'main.js';
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}
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console.log(`run: script=${options.script}`);
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}
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run();
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}
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bug7() {
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function run(options = {}) {
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if (options.stopOnError == undefined) {
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options.stopOnError = 'all';
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}
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console.log(`run: stopOnError=${options.stopOnError}`);
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}
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run();
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run({stopOnError: null});
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}
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bug8() {
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for (var i = 0; i < 5; i++) {
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setTimeout(function () {
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console.log(i+1);
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}, 100*i);
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}
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}
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}

‎fundamentals/bug-challenge-es6/jest-helpers.js‎

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jest.useFakeTimers();
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console.logs = [];
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console.clear = function() {
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console.logs = [];
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}
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console.log = function(message) {
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console.logs.push(message.toString());
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}

‎fundamentals/bug-challenge-es6/node_modules/.bin/acorn‎

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‎fundamentals/bug-challenge-es6/node_modules/.bin/babylon‎

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‎fundamentals/bug-challenge-es6/node_modules/.bin/cdl‎

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‎fundamentals/bug-challenge-es6/node_modules/.bin/errno‎

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‎fundamentals/bug-challenge-es6/node_modules/.bin/escodegen‎

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‎fundamentals/bug-challenge-es6/node_modules/.bin/esgenerate‎

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