AboutApplyingWhatWeHaveLearnt.js

let _ // globals

describe('About Applying What We Have Learnt', function () {
  let products

  beforeEach(function () {
    products = [
      { name: 'Sonoma', ingredients: ['artichoke', 'sundried tomatoes', 'mushrooms'], containsNuts: false },
      { name: 'Pizza Primavera', ingredients: ['roma', 'sundried tomatoes', 'goats cheese', 'rosemary'], containsNuts: false },
      { name: 'South Of The Border', ingredients: ['black beans', 'jalapenos', 'mushrooms'], containsNuts: false },
      { name: 'Blue Moon', ingredients: ['blue cheese', 'garlic', 'walnuts'], containsNuts: true },
      { name: 'Taste Of Athens', ingredients: ['spinach', 'kalamata olives', 'sesame seeds'], containsNuts: true }
    ]
  })

  /*********************************************************************************/

  it("given I'm allergic to nuts and hate mushrooms, it should find a pizza I can eat (imperative)", function () {
    let i; let j; let hasMushrooms; const productsICanEat = []

    for (i = 0; i < products.length; i += 1) {
      if (products[i].containsNuts === false) {
        hasMushrooms = false
        for (j = 0; j < products[i].ingredients.length; j += 1) {
          if (products[i].ingredients[j] === 'mushrooms') {
            hasMushrooms = true
          }
        }
        if (!hasMushrooms) productsICanEat.push(products[i])
      }
    }

    expect(productsICanEat.length).toBe(FILL_ME_IN)
  })

  it("given I'm allergic to nuts and hate mushrooms, it should find a pizza I can eat (functional)", function () {
    const productsICanEat = []

    /* solve using filter() & all() / any() */

    expect(productsICanEat.length).toBe(FILL_ME_IN)
  })

  /*********************************************************************************/

  it('should add all the natural numbers below 1000 that are multiples of 3 or 5 (imperative)', function () {
    let sum = 0
    for (let i = 1; i < 1000; i += 1) {
      if (i % 3 === 0 || i % 5 === 0) {
        sum += i
      }
    }

    expect(sum).toBe(FILL_ME_IN)
  })

  it('should add all the natural numbers below 1000 that are multiples of 3 or 5 (functional)', function () {
    const sum = FILL_ME_IN /* try chaining range() and reduce() */

    expect(233168).toBe(FILL_ME_IN)
  })

  /*********************************************************************************/
  it('should count the ingredient occurrence (imperative)', function () {
    const ingredientCount = { '{ingredient name}': 0 }

    for (i = 0; i < products.length; i += 1) {
      for (j = 0; j < products[i].ingredients.length; j += 1) {
        ingredientCount[products[i].ingredients[j]] = (ingredientCount[products[i].ingredients[j]] || 0) + 1
      }
    }

    expect(ingredientCount.mushrooms).toBe(FILL_ME_IN)
  })

  it('should count the ingredient occurrence (functional)', function () {
    const ingredientCount = { '{ingredient name}': 0 }

    /* chain() together map(), flatten() and reduce() */

    expect(ingredientCount.mushrooms).toBe(FILL_ME_IN)
  })

  /*********************************************************************************/
  /* UNCOMMENT FOR EXTRA CREDIT */
  /*
  it("should find the largest prime factor of a composite number", function () {

  });

  it("should find the largest palindrome made from the product of two 3 digit numbers", function () {

  });

  it("should find the smallest number divisible by each of the numbers 1 to 20", function () {

  });

  it("should find the difference between the sum of the squares and the square of the sums", function () {

  });

  it("should find the 10001st prime", function () {

  });
  */
})