text: var _; //globals
  
  describe("About Applying What We Have Learnt", function() {
  
    var 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 () {
  
      var i,j,hasMushrooms, 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(1);
    });
  
    it("given I'm allergic to nuts and hate mushrooms, it should find a pizza I can eat (functional)", function () {
  
        var productsICanEat = [];
  
        var noNuts = function(prod) { return prod.containsNuts == false };
  
        var isMushrooms = function(ing) { return ing == 'mushrooms' };
  
        var hasNoMushrooms = function(prod) {
          var ings = prod['ingredients'];
          return !(_.any(ings, isMushrooms));
        };
  
        productsWithNoMushrooms = products.filter(hasNoMushrooms)
        productsICanEat = productsWithNoMushrooms.filter(noNuts);
        // /* solve using filter() & all() / any() */
  
        expect(productsICanEat.length).toBe(1);
    });
  
    /*********************************************************************************/
  
    it("should add all the natural numbers below 1000 that are multiples of 3 or 5 (imperative)", function () {
  
      var sum = 0;
      for(var i=1; i<1000; i+=1) {
        if (i % 3 === 0 || i % 5 === 0) {
          sum += i;
        }
      }
  
      expect(sum).toBe(233168);
    });
  
    it("should add all the natural numbers below 1000 that are multiples of 3 or 5 (functional)", function () {
  
      var sum  = _.chain(_.range(0,1000))    /* try chaining range() and reduce() */
                  .filter(function(x) { return (x % 3 == 0) || (x % 5 == 0) })
                  .reduce(function(a, b) { return a + b })
                  .value();
  
      expect(233168).toBe(sum);
    });
  
    /*********************************************************************************/
     it("should count the ingredient occurrence (imperative)", function () {
      var 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(2);
    });
  
    it("should count the ingredient occurrence (functional)", function () {
      var ingredientCount = { "{ingredient name}": 0 };
  
      /* chain() together map(), flatten() and reduce() */
          // var countOccurrences = function(products) {
          var counts = {};
          var allIngs = [];
  
          var result =
              _.chain(products)
              .map(function(prod) {
                  return allIngs.push.apply(allIngs, prod.ingredients);
              })
              .value();
  
          var ingredientCount =
              _.reduce(allIngs, function(counts, word) {
                counts[word] = (counts[word] || 0) + 1;
                return counts;
              }, {})
  
          expect(ingredientCount['mushrooms']).toBe(2);
    });
  
    /*********************************************************************************/
    /* 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 () {
  
    });
    */
  });
  