All Tests Pass: Week 4

week4.js

/**
 * All Tests Pass: Week 4
 *
 * Working with native Array methods.
 *
 * This week, you're working at Acme Artwork, a small art store whose owner needs help understanding their sales for any given
 * month. The last two month's worth of sales are available to you as an array of structured objects, with various bits of data
 * describing who bought what for what price.
 *
 * For the purposes of this puzzle, the sales records are kept at the bottom of the puzzle file. Check there for the structure
 * of each record.
 *
 * The owner has asked that you keep the implementation as flexible as possible, so you've decided to split up the processing
 * of records into a few discrete functions.
 *
 * - `function getPrice(item)` given an object representing the sales record, extract the price from the record and return it.
 * -  `priceStringToNumber(price)` Sales stored in a string format `$1,000.00`. This function will take a price string and
 *    return a numeric representation.
 * - `isHighValueSale(saleValue)` - This function will take the value of a sale and return true/false based on whether it's
 *    considered high value or not. The owner of the store considers anything over $100 to be a high value sale.
 * - `sum(a, b)` - This function will return the sum of the two passed in variables `a` and `b`.
 */


  function totalSales(listOfSales) {
  return listOfSales.map(getPrice)
    .map(priceStringToNumber)
    .reduce(sum);
}

function totalHighValueSales(listOfSales) {
  return listOfSales.map(getPrice)
    .map(priceStringToNumber)
    .filter(isHighValueSale)
    .reduce(sum);
}

function getPrice(item) {
  return item.price;
}

function priceStringToNumber(price) {
  return parseFloat(price.replace(/\$|\,/, ''));
}

function isHighValueSale(saleValue) {
  return saleValue > 100;
}

function sum(accumulator, nextValue) {
  return accumulator + nextValue;
}

function toDecimalPlace(value, decimals) {
  return Number(Math.round(value+'e'+decimals)+'e-'+decimals);
}

// Don't edit anything after this line.

assertEqual(toDecimalPlace(totalSales(januarySales()), 2), 10756.66, "January Total Sales."); //10756.66
assertEqual(toDecimalPlace(totalSales(februarySales()), 2), 11020.08, "February Total Sales."); //11020.08
assertEqual(toDecimalPlace(totalHighValueSales(januarySales()), 2), 10632.37, "January High Value Sales."); //10632.37
assertEqual(toDecimalPlace(totalHighValueSales(februarySales()), 2), 11020.08, "February High Value Sales."); //11020.08

console.log("All clear 🎉");

/**
 * Basic assert.
 *
 * Example: assert(foo == true, "Foo equal true");
 *
 * @param assertion
 * @param message
 */
function assert(assertion, message) {
  if (!assertion) {
    console.trace();
    throw (!!message) ? `Assertion fail: ${message}.` : `Assertion fail.`;
  } else {
    console.log((!!message) ? `Pass: ${message}` : "Assertion passed.");
  }
}

/**
 * Helper function for deep object equal.
 *
 * Example: assertEqual({foo: "bar"}, {foo: "bar"}, "Objects equal.");
 *
 * @param first
 * @param second
 * @param message
 */
function assertObjectEqual(first, second, message) {
  if (!first || !second) {
    throw (!!message) ? `Assertion fail: ${message}.` : `Assertion fail.`;
  }

  let firstKeys = Object.keys(first),
    secondKeys = Object.keys(second);

  if (firstKeys.length !== secondKeys.length) {
    throw (!!message) ? `Assertion fail: ${message}.` : `Assertion fail.`;
  }

  for (let key in firstKeys) {
    if (typeof first[key] === "object") {
      assertObjectEqual(first[key], second[key], message);
    } else if (first[key] !== second[key]) {
      throw (!!message) ? `Assertion fail: ${message}.` : `Assertion fail.`;
    }
  }

  console.log((!!message) ? `Pass: ${message}` : "Assertion passed.");
}

/**
 * Assert equal.
 *
 * Example: assertEqual(true, true, "True equals true.");
 *
 * @param first
 * @param second
 * @param message
 */
function assertEqual(first, second, message) {
  if (typeof first === "object") {
    assertObjectEqual(first, second, message);
  } else {
    assert(first === second, message);
  }
}

function januarySales() {
  return [ { name: 'Arielle Barrows',
    address: '11882 Stevie Crossroad Suite 778',
    city: 'Tannerburgh',
    state: 'South Dakota',
    zip: '04742',
    purchase_date: 'Tue Feb 06 2018 19:49:48 GMT-0500 (EST)',
    item: 'ipsum et omnis',
    price: '$495.08' },
    { name: 'Magdalena Thiel',
      address: '201 Emilio Mill Suite 340',
      city: 'Schroedertown',
      state: 'Oregon',
      zip: '91876-2249',
      purchase_date: 'Tue Feb 06 2018 08:58:17 GMT-0500 (EST)',
      item: 'iure nesciunt reprehenderit',
      price: '$923.46' },
    { name: 'Anne Mraz',
      address: '274 Langworth Corner Apt. 915',
      city: 'Rodriguezshire',
      state: 'Wisconsin',
      zip: '17953',
      purchase_date: 'Tue Feb 06 2018 11:41:25 GMT-0500 (EST)',
      item: 'veniam eum autem',
      price: '$770.05' },
    { name: 'Nelson Satterfield',
      address: '2610 Hermiston Union Apt. 444',
      city: 'West Murielfort',
      state: 'Maryland',
      zip: '21417',
      purchase_date: 'Tue Feb 06 2018 05:27:34 GMT-0500 (EST)',
      item: 'similique praesentium aperiam',
      price: '$598.85' },
    { name: 'Orpha Gerhold',
      address: '64866 Lacey Vista Suite 403',
      city: 'New Traceyland',
      state: 'Minnesota',
      zip: '50906-1091',
      purchase_date: 'Tue Feb 06 2018 13:55:29 GMT-0500 (EST)',
      item: 'magni ipsum et',
      price: '$730.48' },
    { name: 'Petra Kertzmann',
      address: '84010 Cyrus Corners Apt. 972',
      city: 'Abelshire',
      state: 'Arkansas',
      zip: '59404-2924',
      purchase_date: 'Tue Feb 06 2018 16:12:22 GMT-0500 (EST)',
      item: 'vel accusantium omnis',
      price: '$138.58' },
    { name: 'Gail Konopelski',
      address: '10410 Stroman Light Suite 397',
      city: 'Mosciskiborough',
      state: 'New York',
      zip: '35092',
      purchase_date: 'Tue Feb 06 2018 17:07:34 GMT-0500 (EST)',
      item: 'sint dolorum velit',
      price: '$686.91' },
    { name: 'Maryse Leannon',
      address: '663 Roob Mountains Apt. 953',
      city: 'Augustbury',
      state: 'Florida',
      zip: '32305',
      purchase_date: 'Tue Feb 06 2018 19:45:44 GMT-0500 (EST)',
      item: 'est qui possimus',
      price: '$582.34' },
    { name: 'Jackie Homenick',
      address: '45841 Herta Mountain Apt. 656',
      city: 'Mrazmouth',
      state: 'Iowa',
      zip: '42260-1649',
      purchase_date: 'Tue Feb 06 2018 06:38:07 GMT-0500 (EST)',
      item: 'ut explicabo quis',
      price: '$513.13' },
    { name: 'David Balistreri',
      address: '01450 Ibrahim Burgs Apt. 971',
      city: 'Haneport',
      state: 'Oregon',
      zip: '29629',
      purchase_date: 'Mon Feb 05 2018 21:41:39 GMT-0500 (EST)',
      item: 'eligendi commodi vero',
      price: '$69.73' },
    { name: 'Francesco Gutmann',
      address: '608 Mohamed Field Suite 767',
      city: 'Grantside',
      state: 'Kentucky',
      zip: '26195',
      purchase_date: 'Tue Feb 06 2018 03:20:22 GMT-0500 (EST)',
      item: 'rem facere harum',
      price: '$525.96' },
    { name: 'Florencio Pouros',
      address: '7570 Harvey Road Apt. 898',
      city: 'Aylafort',
      state: 'Kentucky',
      zip: '15953-6825',
      purchase_date: 'Tue Feb 06 2018 04:25:35 GMT-0500 (EST)',
      item: 'eum ea eligendi',
      price: '$710.60' },
    { name: 'Madge Von',
      address: '94358 Bahringer Throughway Apt. 197',
      city: 'West Kattieview',
      state: 'Oklahoma',
      zip: '59196-4115',
      purchase_date: 'Tue Feb 06 2018 08:49:41 GMT-0500 (EST)',
      item: 'eum qui odio',
      price: '$674.39' },
    { name: 'Jordan Thiel',
      address: '64717 Keagan Stream Apt. 345',
      city: 'West Roxane',
      state: 'Oregon',
      zip: '05450-7187',
      purchase_date: 'Tue Feb 06 2018 11:34:44 GMT-0500 (EST)',
      item: 'omnis sed est',
      price: '$54.56' },
    { name: 'Teagan Hegmann',
      address: '9391 Langosh Locks Apt. 761',
      city: 'Lucileside',
      state: 'Arkansas',
      zip: '08728-0601',
      purchase_date: 'Tue Feb 06 2018 17:37:55 GMT-0500 (EST)',
      item: 'magni saepe deleniti',
      price: '$989.93' },
    { name: 'Bernadine Bernhard',
      address: '128 Chauncey Streets Apt. 048',
      city: 'Murphyshire',
      state: 'Texas',
      zip: '61250-8458',
      purchase_date: 'Tue Feb 06 2018 11:02:04 GMT-0500 (EST)',
      item: 'in voluptas nesciunt',
      price: '$397.89' },
    { name: 'Flavie Metz',
      address: '541 Ophelia Key Suite 497',
      city: 'Lake Estel',
      state: 'North Dakota',
      zip: '57430',
      purchase_date: 'Tue Feb 06 2018 03:18:38 GMT-0500 (EST)',
      item: 'ut laboriosam illo',
      price: '$447.72' },
    { name: 'Robin Wintheiser',
      address: '8229 Carter Lane Suite 471',
      city: 'South Kristian',
      state: 'Arkansas',
      zip: '72629-6632',
      purchase_date: 'Tue Feb 06 2018 16:57:55 GMT-0500 (EST)',
      item: 'eius corporis sit',
      price: '$813.36' },
    { name: 'Lindsey Padberg',
      address: '82886 Spinka Forks Apt. 380',
      city: 'Lake Jacintostad',
      state: 'Hawaii',
      zip: '20592-9857',
      purchase_date: 'Tue Feb 06 2018 06:06:51 GMT-0500 (EST)',
      item: 'repellat id dolorem',
      price: '$412.22' },
    { name: 'Freida Weimann',
      address: '7412 Monahan Wells Suite 421',
      city: 'Vivianemouth',
      state: 'Louisiana',
      zip: '21955-2778',
      purchase_date: 'Tue Feb 06 2018 20:23:39 GMT-0500 (EST)',
      item: 'sed impedit ut',
      price: '$221.42' } ];
}

function februarySales() {
  return [ { name: 'Nolan Koepp',
    address: '8876 Strosin Pike Suite 806',
    city: 'Port Gerdastad',
    state: 'Indiana',
    zip: '98892-3986',
    purchase_date: 'Tue Feb 06 2018 07:02:55 GMT-0500 (EST)',
    item: 'tenetur quo voluptatem',
    price: '$422.34' },
    { name: 'Raymundo Wintheiser',
      address: '18499 Easter Landing Apt. 918',
      city: 'Krajcikview',
      state: 'North Dakota',
      zip: '84007-2834',
      purchase_date: 'Tue Feb 06 2018 01:47:05 GMT-0500 (EST)',
      item: 'neque et ut',
      price: '$783.08' },
    { name: 'Violet Runolfsdottir',
      address: '571 Amir Turnpike Apt. 027',
      city: 'East Tamara',
      state: 'West Virginia',
      zip: '75065-4453',
      purchase_date: 'Tue Feb 06 2018 08:26:56 GMT-0500 (EST)',
      item: 'accusamus eos alias',
      price: '$832.36' },
    { name: 'Akeem Mayert',
      address: '1854 Morar Pass Suite 544',
      city: 'West Devanteborough',
      state: 'Illinois',
      zip: '54222',
      purchase_date: 'Tue Feb 06 2018 13:38:54 GMT-0500 (EST)',
      item: 'a architecto eum',
      price: '$996.90' },
    { name: 'Melissa Stehr',
      address: '306 Roberto Rapid Apt. 783',
      city: 'Joshuaton',
      state: 'Arizona',
      zip: '52676',
      purchase_date: 'Tue Feb 06 2018 02:25:45 GMT-0500 (EST)',
      item: 'ipsa neque voluptatem',
      price: '$219.85' },
    { name: 'Franco Cruickshank',
      address: '020 Prosacco Mission Apt. 379',
      city: 'Vestamouth',
      state: 'Arizona',
      zip: '14177-0680',
      purchase_date: 'Mon Feb 05 2018 23:00:13 GMT-0500 (EST)',
      item: 'quis architecto pariatur',
      price: '$235.57' },
    { name: 'Emanuel Haag',
      address: '77302 Edythe Spring Apt. 383',
      city: 'Hermanmouth',
      state: 'Iowa',
      zip: '98523',
      purchase_date: 'Tue Feb 06 2018 19:16:56 GMT-0500 (EST)',
      item: 'ipsam accusamus assumenda',
      price: '$190.17' },
    { name: 'Carmelo Quigley',
      address: '0448 Brendon Oval Suite 281',
      city: 'Ernserburgh',
      state: 'North Carolina',
      zip: '13797-2319',
      purchase_date: 'Tue Feb 06 2018 21:37:55 GMT-0500 (EST)',
      item: 'nihil enim et',
      price: '$939.83' },
    { name: 'Clementina Hessel',
      address: '660 Medhurst Square Suite 307',
      city: 'West Shakira',
      state: 'Mississippi',
      zip: '60422',
      purchase_date: 'Mon Feb 05 2018 22:25:52 GMT-0500 (EST)',
      item: 'maxime iure aut',
      price: '$452.86' },
    { name: 'Willis Bednar',
      address: '175 Edison Ranch Apt. 969',
      city: 'Lake Bettie',
      state: 'Missouri',
      zip: '62470',
      purchase_date: 'Tue Feb 06 2018 03:17:10 GMT-0500 (EST)',
      item: 'autem eos quis',
      price: '$646.36' },
    { name: 'Marietta Keebler',
      address: '133 Cassin Flats Suite 067',
      city: 'East Antone',
      state: 'Alabama',
      zip: '11450',
      purchase_date: 'Tue Feb 06 2018 10:17:25 GMT-0500 (EST)',
      item: 'et dolore eos',
      price: '$819.43' },
    { name: 'Laisha Raynor',
      address: '428 Nitzsche Circle Apt. 167',
      city: 'Roweport',
      state: 'South Dakota',
      zip: '06560-8334',
      purchase_date: 'Tue Feb 06 2018 03:39:08 GMT-0500 (EST)',
      item: 'aut dicta qui',
      price: '$873.39' },
    { name: 'Jazlyn Ward',
      address: '55282 Felton Villages Apt. 988',
      city: 'Nealstad',
      state: 'Hawaii',
      zip: '59482',
      purchase_date: 'Tue Feb 06 2018 06:13:52 GMT-0500 (EST)',
      item: 'delectus quam omnis',
      price: '$230.47' },
    { name: 'Kamron McClure',
      address: '708 Mraz Union Suite 331',
      city: 'Port Garrison',
      state: 'Nevada',
      zip: '35989-0389',
      purchase_date: 'Tue Feb 06 2018 16:12:12 GMT-0500 (EST)',
      item: 'eos nesciunt est',
      price: '$356.52' },
    { name: 'Irving Cronin',
      address: '485 O\'Reilly Lakes Suite 681',
      city: 'Eliasmouth',
      state: 'Iowa',
      zip: '38505-1556',
      purchase_date: 'Tue Feb 06 2018 00:11:26 GMT-0500 (EST)',
      item: 'vel numquam saepe',
      price: '$469.30' },
    { name: 'Aiden Ziemann',
      address: '6861 Tod Fords Apt. 692',
      city: 'Kenview',
      state: 'Michigan',
      zip: '00330-8068',
      purchase_date: 'Tue Feb 06 2018 05:20:00 GMT-0500 (EST)',
      item: 'dolorem sunt laboriosam',
      price: '$330.21' },
    { name: 'Gail Trantow',
      address: '6477 Prosacco Parks Suite 823',
      city: 'Cassinton',
      state: 'California',
      zip: '04990',
      purchase_date: 'Tue Feb 06 2018 15:45:13 GMT-0500 (EST)',
      item: 'est ut quia',
      price: '$867.21' },
    { name: 'Evert Prohaska',
      address: '076 Neal Roads Apt. 418',
      city: 'Lake Candace',
      state: 'Nebraska',
      zip: '21159-8752',
      purchase_date: 'Tue Feb 06 2018 19:32:17 GMT-0500 (EST)',
      item: 'libero fugit magnam',
      price: '$568.24' },
    { name: 'Breana Huel',
      address: '7515 Barney Fort Suite 961',
      city: 'Gordonhaven',
      state: 'Montana',
      zip: '33846',
      purchase_date: 'Tue Feb 06 2018 05:29:18 GMT-0500 (EST)',
      item: 'necessitatibus sit aut',
      price: '$342.13' },
    { name: 'Krystina Kuhlman',
      address: '110 Hyatt Terrace Suite 758',
      city: 'Baumbachtown',
      state: 'Minnesota',
      zip: '11787-5922',
      purchase_date: 'Tue Feb 06 2018 17:11:36 GMT-0500 (EST)',
      item: 'omnis dolor et',
      price: '$443.86' } ];
}