workshop part #1

index-spec.js

var assert = require('assert');
var hamjest = require('hamjest');
var promiseThat = hamjest.promiseThat;
var isRejectedWith = hamjest.isRejectedWith;

var KATAS_URL = 'http://katas.tddbin.com/katas/es6/language/__grouped__.json';
var INVALID_URL = 'http://katas.tddbin.com/katas/es6/language/__all__.json';
var fetch = require('node-fetch');

function loadKatasJsonFrom(url) {
  return fetch(url)
    .then(function(res) {
      return res.json();
    })
    .catch(function() {
      throw 'Error loading katas.'
    })
    .then(function(katasJson) {
      if ('groups' in katasJson) {
        return katasJson;
      }
      throw 'Invalid JSON format.'
    })
    ;
}
describe('loading the katas JSON', () => {
  it('works', () => {
    return loadKatasJsonFrom(KATAS_URL);
  });
  it('bails for non-JSON data', () => {
    return promiseThat(loadKatasJsonFrom('http://es6katas.org'),
      isRejectedWith('Error loading katas.')
    );
  });
  it('bails for invalid JSON data', () => {
    return promiseThat(loadKatasJsonFrom(INVALID_URL),
      isRejectedWith('Invalid JSON format.')
    );
  });
});

package.json

{
  "name": "es6-workshop-2016",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "mocha src",
    "watch:test": "npm test -- --watch"
  },
  "author": "",
  "license": "MIT",
  "devDependencies": {
    "hamjest": "^2.13.0",
    "mocha": "^2.4.5",
    "node-fetch": "^1.3.3"
  }
}