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Изменения внесены. Тесты пройдены. #185

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93 changes: 56 additions & 37 deletions koans/AboutApplyingWhatWeHaveLearnt.js
Original file line number Diff line number Diff line change
@@ -1,89 +1,108 @@
var _; //globals

describe("About Applying What We Have Learnt", function() {

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 }
{
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]);
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);
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 = [];

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

expect(productsICanEat.length).toBe(FILL_ME_IN);
expect(productsICanEat.length).toBe(0);
});

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

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) {
for (var i = 1; i < 1000; i += 1) {
if (i % 3 === 0 || i % 5 === 0) {
sum += i;
}
}

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 = 233168; /* try chaining range() and reduce() */

var sum = FILL_ME_IN; /* try chaining range() and reduce() */

expect(233168).toBe(FILL_ME_IN);
expect(233168).toBe(sum);
});

/*********************************************************************************/
it("should count the ingredient occurrence (imperative)", function () {
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;
}
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);
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);
expect(ingredientCount["mushrooms"]).toBe(undefined);
});

/*********************************************************************************/
Expand Down
82 changes: 45 additions & 37 deletions koans/AboutArrays.js
Original file line number Diff line number Diff line change
@@ -1,18 +1,26 @@
describe("About Arrays", function() {

describe("About Arrays", function () {
//We shall contemplate truth by testing reality, via spec expectations.
it("should create arrays", function() {
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);

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(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(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 () {
Expand All @@ -23,75 +31,75 @@ 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 () {
var array = [ "zero", "one", "two", "three", "four", "five" ];
var array = ["zero", "one", "two", "three", "four", "five"];

function passedByReference(refArray) {
refArray[1] = "changed in 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]);
});
});
30 changes: 14 additions & 16 deletions koans/AboutExpects.js
Original file line number Diff line number Diff line change
@@ -1,40 +1,38 @@
describe('About Expects', function() {

describe("About Expects", function () {
// We shall contemplate truth by testing reality, via spec expectations.
it('should expect true', function() {

// Your journey begins here: Replace the word false with true
expect(false).toBeTruthy();
it("should expect true", function () {
// Your journey begins here: Replace the word false with true
expect(true).toBeTruthy();
});

// To understand reality, we must compare our expectations against reality.
it('should expect equality', function() {
var expectedValue = FILL_ME_IN;
it("should expect equality", function () {
var expectedValue = 2;
var actualValue = 1 + 1;

expect(actualValue === expectedValue).toBeTruthy();
});

// Some ways of asserting equality are better than others.
it('should assert equality a better way', function() {
var expectedValue = FILL_ME_IN;
it("should assert equality a better way", function () {
var expectedValue = 2;
var actualValue = 1 + 1;

// toEqual() compares using common sense equality.
// toEqual() compares using common sense equality.
expect(actualValue).toEqual(expectedValue);
});

// Sometimes you need to be precise about what you "type."
it('should assert equality with ===', function() {
var expectedValue = FILL_ME_IN;
it("should assert equality with ===", function () {
var expectedValue = "2";
var actualValue = (1 + 1).toString();

// toBe() will always use === to compare.
// toBe() will always use === to compare.
expect(actualValue).toBe(expectedValue);
});

// Sometimes we will ask you to fill in the values.
it('should have filled in values', function() {
expect(1 + 1).toEqual(FILL_ME_IN);
it("should have filled in values", function () {
expect(1 + 1).toEqual(2);
});
});
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