Cape Town | 2026-ITP-Jan | Pretty Taruvinga | Sprint 2 | Book Library

Sprint-1/destructuring/exercise-1/exercise.js

@@ -6,7 +6,7 @@ const personOne = {
 
 // Update the parameter to this function to make it work.
 // Don't change anything else.
-function introduceYourself(___________________________) {
+function introduceYourself({ name, age, favouriteFood }) {
   console.log(
     `Hello, my name is ${name}. I am ${age} years old and my favourite food is ${favouriteFood}.`
   );

Sprint-1/destructuring/exercise-2/exercise.js

@@ -70,3 +70,16 @@ let hogwarts = [
     occupation: "Teacher",
   },
 ];
+// Task 1
+hogwarts.forEach(({ firstName, lastName, house }) => {
+  if (house === "Gryffindor") {
+    console.log(firstName, lastName);
+  }
+});
+
+// Task 2
+hogwarts.forEach(({ firstName, lastName, occupation, pet }) => {
+  if (occupation === "Teacher" && pet !== null) {
+    console.log(firstName, lastName);
+  }
+});

Sprint-1/destructuring/exercise-3/exercise.js

@@ -6,3 +6,17 @@ let order = [
   { itemName: "Hot Coffee", quantity: 2, unitPricePence: 100 },
   { itemName: "Hash Brown", quantity: 4, unitPricePence: 40 },
 ];
+let totalPence = 0;
+
+console.log("QTY     ITEM                TOTAL");
+
+order.forEach(({ itemName, quantity, unitPricePence }) => {
+  let itemTotal = quantity * unitPricePence;
+  totalPence += itemTotal;
+
+  console.log(
+    `${quantity}       ${itemName}        ${(itemTotal / 100).toFixed(2)}`
+  );
+});
+
+console.log(`\nTotal: ${(totalPence / 100).toFixed(2)}`);

challenges/challenge-cowsay-two/solution1.js

@@ -1,30 +1,27 @@
 // =================
-// Stripped down cowsayer CLI, 
+// Stripped down cowsayer CLI,
 // no libraries
 // https://nodejs.dev/learn/nodejs-accept-arguments-from-the-command-line
 // =================
 
-// 1. Accept arguments
-
-// how will you accept arguments?
-
-// 2. Make supplies for our speech bubble
-
-let topLine = '_';
-let bottomLine = '-';
-let saying = '';
+let topLine = "_";
+let bottomLine = "-";
+let saying = process.argv[2] || "Mooooo";
 
 // 3. Make a cow that takes a string
 
 function cowsay(saying) {
-// how will you make the speech bubble contain the text?
-
-// where will the cow picture go?
-
-// how will you account for the parameter being empty?
-
+  let line = "_".repeat(saying.length + 2);
+  let bottom = "-".repeat(saying.length + 2);
+
+  console.log(` ${line} `);
+  console.log(`< ${saying} >`);
+  console.log(` ${bottom} `);
+  console.log(`        \\   ^__^`);
+  console.log(`         \\  (oo)\\_______`);
+  console.log(`            (__)\\       )\\/\\`);
+  console.log(`                ||----w |`);
+  console.log(`                ||     ||`);
 }
 
-//4. Pipe argument into cowsay function and return a cow
-
-// how will you log this to the console?
+cowsay(saying);

challenges/challenge-cowsay-two/solution2.js

@@ -1,18 +1,23 @@
-// =================
-// Stripped down cowsayer CLI, 
-// no libraries or arguments
-// https://nodejs.dev/learn/accept-input-from-the-command-line-in-nodejs
-// =================
-
-// 1. Make  a command line interface.
-
-// 2. Make supplies for our speech bubble
-
-// 3. Make a cow that takes a string
+const readline = require("readline");
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout,
+});
 
 const cow = (saying) => {
-    // how did you make the cow before?
-}
+  let line = "_".repeat(saying.length + 2);
+  let bottom = "-".repeat(saying.length + 2);
 
-// 4. Use readline to get a string from the terminal 
-// (with a prompt so it's clearer what we want)
+  console.log(` ${line} `);
+  console.log(`< ${saying} >`);
+  console.log(` ${bottom} `);
+  console.log(`        \\   ^__^`);
+  console.log(`         \\  (oo)\\_______`);
+  console.log(`            (__)\\       )\\/\\`);
+  console.log(`                ||----w |`);
+  console.log(`                ||     ||`);
+};
+rl.question("What would you like the cow to say? ", function (answer) {
+  cow(answer || "Mooooo");
+  rl.close();
+});

challenges/challenge-weather-app/assets/styles.css

@@ -113,7 +113,6 @@
   animation: 0.25s forwards fade-in;
 
   display: block;
-  opacity: 0;
   object-fit: cover;
 
   flex: 0 0 auto;
@@ -125,7 +124,6 @@
   background: rgba(0, 0, 0, 0.5);
 }
 
-
 /* Credits
 ------------------------------------------------------------------------------*/
 .info {

challenges/challenge-weather-app/index.html

@@ -1,49 +1,53 @@
 <!DOCTYPE html>
 <html lang="en">
-
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <meta http-equiv="X-UA-Compatible" content="ie=edge">
-
-  <title>Meteoropolis</title>
-  <link rel="stylesheet" href="assets/globals.css">
-  <link rel="stylesheet" href="assets/styles.css">
-</head>
-
-<body>
-  <!-- Structure -->
-  <main class="content">
-    <header class="header">
-      <h1 class="title">
-        <i>Meteor</i>
-        <i>opolis</i>
-      </h1>
-    </header>
-
-    <figure class="photo" id="photo"></figure>
-
-    <div class="info">
-      <p class="info__item info__item--conditions" id="conditions"></p>
-      <p class="info__item info__item--credits">
-        <a href="#" id="credit-user"></a>
-        <span>on</span>
-        <a href="#" id="credit-platform">Unsplash</a>
-      </p>
-    </div>
-
-    <div class="thumbs" id="thumbs"></div>
-
-    <div class="controls">
-      <form class="search" id="search">
-        <label class="search__label" for="search-tf">City</label>
-        <input class="search__input" id="search-tf" name="city" placeholder="Enter city name" autocomplete="city" />
-        <button class="btn search__btn">Go</button>
-      </form>
-    </div>
-  </main>
-
-  <!-- JS goes here -->
-</body>
-
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
+
+    <title>Meteoropolis</title>
+    <link rel="stylesheet" href="assets/globals.css" />
+    <link rel="stylesheet" href="assets/styles.css" />
+  </head>
+
+  <body>
+    <!-- Structure -->
+    <main class="content">
+      <header class="header">
+        <h1 class="title">
+          <i>Meteor</i>
+          <i>opolis</i>
+        </h1>
+      </header>
+
+      <figure class="photo" id="photo"></figure>
+
+      <div class="info">
+        <p class="info__item info__item--conditions" id="conditions"></p>
+        <p class="info__item info__item--credits">
+          <a href="#" id="credit-user"></a>
+          <span>on</span>
+          <a href="#" id="credit-platform">Unsplash</a>
+        </p>
+      </div>
+
+      <div class="thumbs" id="thumbs"></div>
+
+      <div class="controls">
+        <form class="search" id="search">
+          <label class="search__label" for="search-tf">City</label>
+          <input
+            class="search__input"
+            id="search-tf"
+            name="city"
+            placeholder="Enter city name"
+            autocomplete="city"
+          />
+          <button type="submit" class="btn search__btn">Go</button>
+        </form>
+      </div>
+    </main>
+
+    <!-- JS goes here -->
+  </body>
 </html>

challenges/unit-testing/katas-tdd/roman-numerals/convert-to-new-roman.js

@@ -1,3 +1,29 @@
-function convertToNewRoman(n) {}
+function convertToNewRoman(n) {
+  const romanNumerals = [
+    [1000, "M"],
+    [900, "CM"],
+    [500, "D"],
+    [400, "CD"],
+    [100, "C"],
+    [90, "XC"],
+    [50, "L"],
+    [40, "XL"],
+    [10, "X"],
+    [9, "IX"],
+    [5, "V"],
+    [4, "IV"],
+    [1, "I"],
+  ];
 
+  let result = "";
+
+  for (let [value, symbol] of romanNumerals) {
+    while (n >= value) {
+      result += symbol;
+      n -= value;
+    }
+  }
+
+  return result;
+}
 module.exports = convertToNewRoman;

challenges/unit-testing/katas-tdd/roman-numerals/convert-to-new-roman.test.js

@@ -2,6 +2,11 @@ let convertToNewRoman = require("./convert-to-new-roman");
 
 test("returns I if passed 1 as an argument", function () {
   // Arrange
+  const input = 1;
+
   // Act
+  const result = convertToNewRoman(input);
+
   // Assert
+  expect(result).toBe("I");
 });

challenges/unit-testing/katas-tdd/roman-numerals/convert-to-old-roman.js

@@ -1,3 +1,5 @@
-function convertToOldRoman(n) {}
+function convertToOldRoman(n) {
+  return "I";
+}
 
 module.exports = convertToOldRoman;

challenges/unit-testing/katas-tdd/roman-numerals/convert-to-old-roman.test.js

@@ -2,6 +2,11 @@ let convertToOldRoman = require("./convert-to-old-roman");
 
 test("returns I if passed 1 as an argument", function () {
   // Arrange
+  const input = 1;
+
   // Act
+  const result = convertToOldRoman(input);
+
   // Assert
+  expect(result).toBe("I");
 });

challenges/unit-testing/passing-tests/car-sales/car-sales.js

@@ -1,3 +1,15 @@
-function sales(carsSold) {}
+function sales(carsSold) {
+  let totals = {};
+
+  for (let car of carsSold) {
+    if (totals[car.make]) {
+      totals[car.make] += car.price;
+    } else {
+      totals[car.make] = car.price;
+    }
+  }
+
+  return totals;
+}
 
 module.exports = sales;

challenges/unit-testing/passing-tests/factorial/factorial.js

@@ -1,13 +1,11 @@
-// int is an integer
-// a factorial is the product of all non-negative integers
-// less than or equal to the iniital number.
+function factorial(int) {
+  let result = 1;
 
-// for example the factorial of 5 is 120
-// 120 = 1 * 2 * 3 * 4 * 5
+  for (let i = 1; i <= int; i++) {
+    result *= i;
+  }
 
-// calculate and return the factorial of int
-// note: factorial of 0 is 1
-
-function factorial(int) {}
+  return result;
+}
 
 module.exports = factorial;

challenges/unit-testing/passing-tests/get-average/get-average.js

@@ -2,6 +2,18 @@
 // return the average of all the numbers
 // be sure to exclude the strings
 
-function average(numbers) {}
+function average(numbers) {
+  let sum = 0;
+  let count = 0;
+
+  for (let item of numbers) {
+    if (typeof item === "number") {
+      sum += item;
+      count++;
+    }
+  }
+
+  return sum / count;
+}
 
 module.exports = average;

challenges/unit-testing/writing-tests/largest-number/largest-number.test.js

@@ -2,12 +2,13 @@ let getLargestNumber = require("./largest-number");
 
 test("returns largest number in array", function () {
   // Arrange
+  let input = [3, 21, 88, 4, 36];
+  let original = [...input];
+
   // Act
+  let result = getLargestNumber(input);
+
   // Assert
+  expect(result).toBe(88);
+  expect(input).toEqual(original);
 });
-
-// example
-// input: [3, 21, 88, 4, 36];
-// expected: 88;
-
-// also test that the original array hasn't changed

challenges/unit-testing/writing-tests/remove-vowels/remove-vowels-in-array.js

@@ -9,8 +9,3 @@ function removeVowelsFromWords(words) {
 }
 
 module.exports = removeVowelsFromWords;
-
-/*
-    input: ["Irina", "Etza", "Daniel"]
-    expected output: ["rn", "tz", "Dnl"]
-*/