Bowling Game Kata in JavaScript

README.md

Bowling Game Kata in JavaScript

git clone git@gist.github.com:35d39ab94e659bff436fca096f2c5e37.git bowling
cd bowling
npm install
npm test

index.js

class BowlingGame {
  constructor() {
    this.rolls = [];
  }
  roll(pins) {
    this.rolls.push(pins);
  }
  score() {
    return this.rolls.reduce((roll, total) => total + roll);
  }
}

module.exports = BowlingGame;

package.json

{
  "name": "bowling",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "tap test.js"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "tap": "^10.0.0"
  },
  "engines": {
    "node": ">=6"
  }
}

test.js

var BowlingGame = require('./');
var tap = require('tap');

tap.test('Scoring Bowling Games', function(t) {
  var game;

  t.beforeEach(function(done) {
    game = new BowlingGame();
    done();
  });

  t.test('should show that tests are working', function(t) {
    t.ok(game);
    t.end();
  });

  t.test('should sum a bad game', function(t) {
    for (let i = 0; i < 20; i++) {
      game.roll(0);
    }
    t.equal(game.score(), 0);
    t.end();
  });

  t.test('should sum a mediocre game', function(t) {
    for (let i = 0; i < 20; i++) {
      game.roll(5);
    }
    t.equal(game.score(), 100);
    t.end();
  });

  t.end();
});