diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 000000000..b58b603fe --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,5 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Editor-based HTTP Client requests +/httpRequests/ diff --git a/.idea/KOANS 2.iml b/.idea/KOANS 2.iml new file mode 100644 index 000000000..0c8867d7e --- /dev/null +++ b/.idea/KOANS 2.iml @@ -0,0 +1,12 @@ + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/modules.xml b/.idea/modules.xml new file mode 100644 index 000000000..c6ab3e230 --- /dev/null +++ b/.idea/modules.xml @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 000000000..419decb5f --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,7 @@ + + + + + + + \ No newline at end of file diff --git a/koans/AboutApplyingWhatWeHaveLearnt.js b/koans/AboutApplyingWhatWeHaveLearnt.js index eccc93763..9a691ec86 100644 --- a/koans/AboutApplyingWhatWeHaveLearnt.js +++ b/koans/AboutApplyingWhatWeHaveLearnt.js @@ -32,16 +32,22 @@ describe("About Applying What We Have Learnt", function() { } } - expect(productsICanEat.length).toBe(FILL_ME_IN); + 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 productsICanEat = _(products).chain() + .filter(function (x) { + return !x.containsNuts;}) + .reject(function(x){ + return _(x.ingredients).any(function(y){ + return y === "mushrooms"; + }); + }) + .value(); /* solve using filter() & all() / any() */ - - expect(productsICanEat.length).toBe(FILL_ME_IN); + expect(productsICanEat.length).toBe(1); }); /*********************************************************************************/ @@ -55,14 +61,20 @@ describe("About Applying What We Have Learnt", function() { } } - expect(sum).toBe(FILL_ME_IN); + expect(sum).toBe(233168); }); 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(233168).toBe(FILL_ME_IN); + var sum = _.range(0,1000).reduce(function (sum, x) { + if (x % 3 === 0 || x % 5 === 0) { + sum += x; + } + return sum; + },0); /* try chaining range() and reduce() */ + + expect(233168).toBe(sum); }); /*********************************************************************************/ @@ -75,15 +87,19 @@ describe("About Applying What We Have Learnt", function() { } } - expect(ingredientCount['mushrooms']).toBe(FILL_ME_IN); + expect(ingredientCount['mushrooms']).toBe(2); }); 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); + _(products).chain().map(function(value){ + return value.ingredients; + }).flatten().reduce(function(number, name){ + return ingredientCount[name] = (ingredientCount[name] || 0) + 1; + },0); + /* chain() together map(), flatten() and reduce() */ + + expect(ingredientCount['mushrooms']).toBe(2); }); /*********************************************************************************/ diff --git a/koans/AboutArrays.js b/koans/AboutArrays.js index f9b33f8cc..170491411 100644 --- a/koans/AboutArrays.js +++ b/koans/AboutArrays.js @@ -3,16 +3,16 @@ describe("About Arrays", function() { //We shall contemplate truth by testing reality, via spec expectations. it("should create arrays", function() { var emptyArray = []; - expect(typeof(emptyArray)).toBe(FILL_ME_IN); //A mistake? - http://javascript.crockford.com/remedial.html - expect(emptyArray.length).toBe(FILL_ME_IN); + expect(typeof(emptyArray)).toBe('object'); //A mistake? - http://javascript.crockford.com/remedial.html + expect(emptyArray.length).toBe(0); var multiTypeArray = [0, 1, "two", function () { return 3; }, {value1: 4, value2: 5}, [6, 7]]; - expect(multiTypeArray[0]).toBe(FILL_ME_IN); - expect(multiTypeArray[2]).toBe(FILL_ME_IN); - expect(multiTypeArray[3]()).toBe(FILL_ME_IN); - expect(multiTypeArray[4].value1).toBe(FILL_ME_IN); - expect(multiTypeArray[4]["value2"]).toBe(FILL_ME_IN); - expect(multiTypeArray[5][0]).toBe(FILL_ME_IN); + expect(multiTypeArray[0]).toBe(0); + expect(multiTypeArray[2]).toBe("two"); + expect(multiTypeArray[3]()).toBe(3); + expect(multiTypeArray[4].value1).toBe(4); + expect(multiTypeArray[4]["value2"]).toBe(5); + expect(multiTypeArray[5][0]).toBe(6); }); it("should understand array literals", function () { @@ -23,36 +23,36 @@ describe("About Arrays", function() { expect(array).toEqual([1]); array[1] = 2; - expect(array).toEqual([1, FILL_ME_IN]); + expect(array).toEqual([1, 2]); array.push(3); - expect(array).toEqual(FILL_ME_IN); + expect(array).toEqual([1, 2, 3]); }); it("should understand array length", function () { var fourNumberArray = [1, 2, 3, 4]; - expect(fourNumberArray.length).toBe(FILL_ME_IN); + expect(fourNumberArray.length).toBe(4); fourNumberArray.push(5, 6); - expect(fourNumberArray.length).toBe(FILL_ME_IN); + expect(fourNumberArray.length).toBe(6); var tenEmptyElementArray = new Array(10); - expect(tenEmptyElementArray.length).toBe(FILL_ME_IN); + expect(tenEmptyElementArray.length).toBe(10); tenEmptyElementArray.length = 5; - expect(tenEmptyElementArray.length).toBe(FILL_ME_IN); + expect(tenEmptyElementArray.length).toBe(5); }); it("should slice arrays", function () { var array = ["peanut", "butter", "and", "jelly"]; - expect(array.slice(0, 1)).toEqual(FILL_ME_IN); - expect(array.slice(0, 2)).toEqual(FILL_ME_IN); - expect(array.slice(2, 2)).toEqual(FILL_ME_IN); - expect(array.slice(2, 20)).toEqual(FILL_ME_IN); - expect(array.slice(3, 0)).toEqual(FILL_ME_IN); - expect(array.slice(3, 100)).toEqual(FILL_ME_IN); - expect(array.slice(5, 1)).toEqual(FILL_ME_IN); + expect(array.slice(0, 1)).toEqual(['peanut']); + expect(array.slice(0, 2)).toEqual(['peanut', 'butter']); + expect(array.slice(2, 2)).toEqual([]); + expect(array.slice(2, 20)).toEqual(["and", "jelly"]); + expect(array.slice(3, 0)).toEqual([]); + expect(array.slice(3, 100)).toEqual(["jelly"]); + expect(array.slice(5, 1)).toEqual([]); }); it("should know array references", function () { @@ -62,36 +62,36 @@ describe("About Arrays", function() { refArray[1] = "changed in function"; } passedByReference(array); - expect(array[1]).toBe(FILL_ME_IN); + expect(array[1]).toBe("changed in function"); var assignedArray = array; assignedArray[5] = "changed in assignedArray"; - expect(array[5]).toBe(FILL_ME_IN); + expect(array[5]).toBe("changed in assignedArray"); var copyOfArray = array.slice(); copyOfArray[3] = "changed in copyOfArray"; - expect(array[3]).toBe(FILL_ME_IN); + expect(array[3]).toBe("three"); }); it("should push and pop", function () { var array = [1, 2]; array.push(3); - expect(array).toEqual(FILL_ME_IN); + expect(array).toEqual([1, 2, 3]); var poppedValue = array.pop(); - expect(poppedValue).toBe(FILL_ME_IN); - expect(array).toEqual(FILL_ME_IN); + expect(poppedValue).toBe(3); + expect(array).toEqual([1, 2]); }); it("should know about shifting arrays", function () { var array = [1, 2]; array.unshift(3); - expect(array).toEqual(FILL_ME_IN); + expect(array).toEqual([3, 1, 2]); var shiftedValue = array.shift(); - expect(shiftedValue).toEqual(FILL_ME_IN); - expect(array).toEqual(FILL_ME_IN); + expect(shiftedValue).toEqual(3); + expect(array).toEqual([1, 2]); }); }); diff --git a/koans/AboutExpects.js b/koans/AboutExpects.js index 7d1a827cb..3735d9628 100644 --- a/koans/AboutExpects.js +++ b/koans/AboutExpects.js @@ -4,12 +4,12 @@ describe('About Expects', function() { it('should expect true', function() { // Your journey begins here: Replace the word false with true - expect(false).toBeTruthy(); + expect(true).toBeTruthy(); }); // To understand reality, we must compare our expectations against reality. it('should expect equality', function() { - var expectedValue = FILL_ME_IN; + var expectedValue = 2; var actualValue = 1 + 1; expect(actualValue === expectedValue).toBeTruthy(); @@ -17,7 +17,7 @@ describe('About Expects', function() { // Some ways of asserting equality are better than others. it('should assert equality a better way', function() { - var expectedValue = FILL_ME_IN; + var expectedValue = 2; var actualValue = 1 + 1; // toEqual() compares using common sense equality. @@ -26,7 +26,7 @@ describe('About Expects', function() { // Sometimes you need to be precise about what you "type." it('should assert equality with ===', function() { - var expectedValue = FILL_ME_IN; + var expectedValue = '2'; var actualValue = (1 + 1).toString(); // toBe() will always use === to compare. @@ -35,6 +35,6 @@ describe('About Expects', function() { // Sometimes we will ask you to fill in the values. it('should have filled in values', function() { - expect(1 + 1).toEqual(FILL_ME_IN); + expect(1 + 1).toEqual(2); }); }); diff --git a/koans/AboutFunctions.js b/koans/AboutFunctions.js index 569100806..b78545f0b 100644 --- a/koans/AboutFunctions.js +++ b/koans/AboutFunctions.js @@ -6,7 +6,7 @@ describe("About Functions", function() { return a + b; } - expect(add(1, 2)).toBe(FILL_ME_IN); + expect(add(1, 2)).toBe(3); }); it("should know internal variables override outer variables", function () { @@ -21,9 +21,9 @@ describe("About Functions", function() { return message; } - expect(getMessage()).toBe(FILL_ME_IN); - expect(overrideMessage()).toBe(FILL_ME_IN); - expect(message).toBe(FILL_ME_IN); + expect(getMessage()).toBe("Outer"); + expect(overrideMessage()).toBe("Inner"); + expect(message).toBe("Outer"); }); it("should have lexical scoping", function () { @@ -35,7 +35,7 @@ describe("About Functions", function() { } return childfunction(); } - expect(parentfunction()).toBe(FILL_ME_IN); + expect(parentfunction()).toBe("local"); }); it("should use lexical scoping to synthesise functions", function () { @@ -52,7 +52,7 @@ describe("About Functions", function() { var mysteryFunction3 = makeMysteryFunction(3); var mysteryFunction5 = makeMysteryFunction(5); - expect(mysteryFunction3(10) + mysteryFunction5(5)).toBe(FILL_ME_IN); + expect(mysteryFunction3(10) + mysteryFunction5(5)).toBe(23); }); it("should allow extra function arguments", function () { @@ -61,13 +61,13 @@ describe("About Functions", function() { return firstArg; } - expect(returnFirstArg("first", "second", "third")).toBe(FILL_ME_IN); + expect(returnFirstArg("first", "second", "third")).toBe("first"); function returnSecondArg(firstArg, secondArg) { return secondArg; } - expect(returnSecondArg("only give first arg")).toBe(FILL_ME_IN); + expect(returnSecondArg("only give first arg")).toBe(undefined); function returnAllArgs() { var argsArray = []; @@ -77,7 +77,7 @@ describe("About Functions", function() { return argsArray.join(","); } - expect(returnAllArgs("first", "second", "third")).toBe(FILL_ME_IN); + expect(returnAllArgs("first", "second", "third")).toBe("first,second,third"); }); it("should pass functions as values", function () { @@ -91,10 +91,10 @@ describe("About Functions", function() { }; var praiseSinger = { givePraise: appendRules }; - expect(praiseSinger.givePraise("John")).toBe(FILL_ME_IN); + expect(praiseSinger.givePraise("John")).toBe("John rules!"); praiseSinger.givePraise = appendDoubleRules; - expect(praiseSinger.givePraise("Mary")).toBe(FILL_ME_IN); + expect(praiseSinger.givePraise("Mary")).toBe("Mary totally rules!"); }); }); diff --git a/koans/AboutHigherOrderFunctions.js b/koans/AboutHigherOrderFunctions.js index 07c416792..ef755fb0e 100644 --- a/koans/AboutHigherOrderFunctions.js +++ b/koans/AboutHigherOrderFunctions.js @@ -11,17 +11,17 @@ describe("About Higher Order Functions", function () { var numbers = [1,2,3]; var odd = _(numbers).filter(function (x) { return x % 2 !== 0 }); - expect(odd).toEqual(FILL_ME_IN); - expect(odd.length).toBe(FILL_ME_IN); - expect(numbers.length).toBe(FILL_ME_IN); + expect(odd).toEqual([1 ,3]); + expect(odd.length).toBe(2); + expect(numbers.length).toBe(3); }); it("should use 'map' to transform each element", function () { var numbers = [1, 2, 3]; var numbersPlus1 = _(numbers).map(function(x) { return x + 1 }); - expect(numbersPlus1).toEqual(FILL_ME_IN); - expect(numbers).toEqual(FILL_ME_IN); + expect(numbersPlus1).toEqual([2, 3, 4]); + expect(numbers).toEqual([1, 2, 3]); }); it("should use 'reduce' to update the same result on each iteration", function () { @@ -29,8 +29,8 @@ describe("About Higher Order Functions", function () { var reduction = _(numbers).reduce( function(/* result from last call */ memo, /* current */ x) { return memo + x }, /* initial */ 0); - expect(reduction).toBe(FILL_ME_IN); - expect(numbers).toEqual(FILL_ME_IN); + expect(reduction).toBe(6); + expect(numbers).toEqual([1, 2, 3]); }); it("should use 'forEach' for simple iteration", function () { @@ -42,8 +42,8 @@ describe("About Higher Order Functions", function () { _(numbers).forEach(isEven); - expect(msg).toEqual(FILL_ME_IN); - expect(numbers).toEqual(FILL_ME_IN); + expect(msg).toEqual("falsetruefalse"); + expect(numbers).toEqual([1,2,3]); }); it("should use 'all' to test whether all items pass condition", function () { @@ -52,8 +52,8 @@ describe("About Higher Order Functions", function () { var isEven = function(x) { return x % 2 === 0 }; - expect(_(onlyEven).all(isEven)).toBe(FILL_ME_IN); - expect(_(mixedBag).all(isEven)).toBe(FILL_ME_IN); + expect(_(onlyEven).all(isEven)).toBe(true); + expect(_(mixedBag).all(isEven)).toBe(false); }); it("should use 'any' to test if any items passes condition" , function () { @@ -62,18 +62,18 @@ describe("About Higher Order Functions", function () { var isEven = function(x) { return x % 2 === 0 }; - expect(_(onlyEven).any(isEven)).toBe(FILL_ME_IN); - expect(_(mixedBag).any(isEven)).toBe(FILL_ME_IN); + expect(_(onlyEven).any(isEven)).toBe(true); + expect(_(mixedBag).any(isEven)).toBe(true); }); it("should use range to generate an array", function() { - expect(_.range(3)).toEqual(FILL_ME_IN); - expect(_.range(1, 4)).toEqual(FILL_ME_IN); - expect(_.range(0, -4, -1)).toEqual(FILL_ME_IN); + expect(_.range(3)).toEqual([0, 1, 2]); + expect(_.range(1, 4)).toEqual([1, 2, 3]); + expect(_.range(0, -4, -1)).toEqual([ 0, -1, -2 , -3]); }); it("should use flatten to make nested arrays easy to work with", function() { - expect(_([ [1, 2], [3, 4] ]).flatten()).toEqual(FILL_ME_IN); + expect(_([ [1, 2], [3, 4] ]).flatten()).toEqual([1,2,3,4]); }); it("should use chain() ... .value() to use multiple higher order functions", function() { @@ -83,7 +83,7 @@ describe("About Higher Order Functions", function () { .reduce(function (sum, x) { return sum + x }) .value(); - expect(result).toEqual(FILL_ME_IN); + expect(result).toEqual(6); }); }); diff --git a/koans/AboutInheritance.js b/koans/AboutInheritance.js index 5dba545b0..f8520989c 100644 --- a/koans/AboutInheritance.js +++ b/koans/AboutInheritance.js @@ -25,20 +25,20 @@ describe("About inheritance", function() { }); it("should be able to call a method on the derived object", function() { - expect(this.swedishChef.cook()).toEqual(FILL_ME_IN); + expect(this.swedishChef.cook()).toEqual("Mmmm soup!"); }); it("should be able to call a method on the base object", function() { - expect(this.swedishChef.answerNanny()).toEqual(FILL_ME_IN); + expect(this.swedishChef.answerNanny()).toEqual("Everything's cool!"); }); it("should set constructor parameters on the base object", function() { - expect(this.swedishChef.age).toEqual(FILL_ME_IN); - expect(this.swedishChef.hobby).toEqual(FILL_ME_IN); + expect(this.swedishChef.age).toEqual(2); + expect(this.swedishChef.hobby).toEqual("cooking"); }); it("should set constructor parameters on the derived object", function() { - expect(this.swedishChef.mood).toEqual(FILL_ME_IN); + expect(this.swedishChef.mood).toEqual("chillin"); }); }); @@ -67,19 +67,19 @@ describe("About Crockford's inheritance improvement", function() { }); it("should be able to call a method on the derived object", function() { - expect(this.gonzo.doTrick()).toEqual(FILL_ME_IN); + expect(this.gonzo.doTrick()).toEqual("eat a tire"); }); it("should be able to call a method on the base object", function() { - expect(this.gonzo.answerNanny()).toEqual(FILL_ME_IN); + expect(this.gonzo.answerNanny()).toEqual("Everything's cool!"); }); it("should set constructor parameters on the base object", function() { - expect(this.gonzo.age).toEqual(FILL_ME_IN); - expect(this.gonzo.hobby).toEqual(FILL_ME_IN); + expect(this.gonzo.age).toEqual(3); + expect(this.gonzo.hobby).toEqual("daredevil performer"); }); it("should set constructor parameters on the derived object", function() { - expect(this.gonzo.trick).toEqual(FILL_ME_IN); + expect(this.gonzo.trick).toEqual("eat a tire"); }); }); diff --git a/koans/AboutMutability.js b/koans/AboutMutability.js index fd9b69af2..e8b5a5307 100644 --- a/koans/AboutMutability.js +++ b/koans/AboutMutability.js @@ -4,7 +4,7 @@ describe("About Mutability", function() { var aPerson = {firstname: "John", lastname: "Smith" }; aPerson.firstname = "Alan"; - expect(aPerson.firstname).toBe(FILL_ME_IN); + expect(aPerson.firstname).toBe("Alan"); }); it("should understand that constructed properties are public and mutable", function () { @@ -16,7 +16,7 @@ describe("About Mutability", function() { var aPerson = new Person ("John", "Smith"); aPerson.firstname = "Alan"; - expect(aPerson.firstname).toBe(FILL_ME_IN); + expect(aPerson.firstname).toBe("Alan"); }); it("should expect prototype properties to be public and mutable", function () { @@ -30,13 +30,13 @@ describe("About Mutability", function() { }; var aPerson = new Person ("John", "Smith"); - expect(aPerson.getFullName()).toBe(FILL_ME_IN); + expect(aPerson.getFullName()).toBe("John Smith"); aPerson.getFullName = function () { return this.lastname + ", " + this.firstname; }; - expect(aPerson.getFullName()).toBe(FILL_ME_IN); + expect(aPerson.getFullName()).toBe("Smith, John"); }); it("should know that variables inside a constructor and constructor args are private", function () { @@ -54,15 +54,15 @@ describe("About Mutability", function() { aPerson.lastname = "Andrews"; aPerson.fullName = "Penny Andrews"; - expect(aPerson.getFirstName()).toBe(FILL_ME_IN); - expect(aPerson.getLastName()).toBe(FILL_ME_IN); - expect(aPerson.getFullName()).toBe(FILL_ME_IN); + expect(aPerson.getFirstName()).toBe("John"); + expect(aPerson.getLastName()).toBe("Smith"); + expect(aPerson.getFullName()).toBe("John Smith"); aPerson.getFullName = function () { return aPerson.lastname + ", " + aPerson.firstname; }; - expect(aPerson.getFullName()).toBe(FILL_ME_IN); + expect(aPerson.getFullName()).toBe("Andrews, Penny"); }); }); diff --git a/koans/AboutObjects.js b/koans/AboutObjects.js index 9f9ed93cc..c5f77897e 100644 --- a/koans/AboutObjects.js +++ b/koans/AboutObjects.js @@ -8,12 +8,12 @@ describe("About Objects", function () { }); it("should confirm objects are collections of properties", function () { - expect(megalomaniac.mastermind).toBe(FILL_ME_IN); + expect(megalomaniac.mastermind).toBe("Joker"); }); it("should confirm that properties are case sensitive", function () { - expect(megalomaniac.henchwoman).toBe(FILL_ME_IN); - expect(megalomaniac.henchWoman).toBe(FILL_ME_IN); + expect(megalomaniac.henchwoman).toBe("Harley"); + expect(megalomaniac.henchWoman).toBe(undefined); }); }); @@ -29,7 +29,7 @@ describe("About Objects", function () { }; var battleCry = megalomaniac.battleCry(4); - expect(FILL_ME_IN).toMatch(battleCry); + expect("They are Pinky and the Brain Brain Brain Brain").toMatch(battleCry); }); it("should confirm that when a function is attached to an object, 'this' refers to the object", function () { @@ -44,8 +44,8 @@ describe("About Objects", function () { } }; - expect(currentYear).toBe(FILL_ME_IN); - expect(megalomaniac.calculateAge()).toBe(FILL_ME_IN); + expect(currentYear).toBe(2022); + expect(megalomaniac.calculateAge()).toBe(2022-1970); }); describe("'in' keyword", function () { @@ -62,27 +62,27 @@ describe("About Objects", function () { var hasBomb = "theBomb" in megalomaniac; - expect(hasBomb).toBe(FILL_ME_IN); + expect(hasBomb).toBe(true); }); it("should not have the detonator however", function () { var hasDetonator = "theDetonator" in megalomaniac; - expect(hasDetonator).toBe(FILL_ME_IN); + expect(hasDetonator).toBe(false); }); }); it("should know that properties can be added and deleted", function () { var megalomaniac = { mastermind : "Agent Smith", henchman: "Agent Smith" }; - expect("secretary" in megalomaniac).toBe(FILL_ME_IN); + expect("secretary" in megalomaniac).toBe(false); megalomaniac.secretary = "Agent Smith"; - expect("secretary" in megalomaniac).toBe(FILL_ME_IN); + expect("secretary" in megalomaniac).toBe(true); delete megalomaniac.henchman; - expect("henchman" in megalomaniac).toBe(FILL_ME_IN); + expect("henchman" in megalomaniac).toBe(false); }); @@ -96,14 +96,14 @@ describe("About Objects", function () { var colouredCircle = new Circle(5); colouredCircle.colour = "red"; - expect(simpleCircle.colour).toBe(FILL_ME_IN); - expect(colouredCircle.colour).toBe(FILL_ME_IN); + expect(simpleCircle.colour).toBe(undefined); + expect(colouredCircle.colour).toBe("red"); Circle.prototype.describe = function () { return "This circle has a radius of: " + this.radius; }; - expect(simpleCircle.describe()).toBe(FILL_ME_IN); - expect(colouredCircle.describe()).toBe(FILL_ME_IN); + expect(simpleCircle.describe()).toBe("This circle has a radius of: 10"); + expect(colouredCircle.describe()).toBe("This circle has a radius of: 5"); }); });