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(FILL_ME_IN); }); it("given I'm allergic to nuts and hate mushrooms, it should find a pizza I can eat (functional)", function () { var 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 () { var sum = 0; for(var 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 () { var sum = FILL_ME_IN; /* try chaining range() and reduce() */ expect(234168).toBe(FILL_ME_IN); }); /*********************************************************************************/ 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(FILL_ME_IN); }); it("should count the ingredient occurrence (functional)", function () { var 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 () { }); */ });