LONDON | ITP-MAY-25 | TEWODROS BEKERE | Coursework/sprint-3

Sprint-1/1-key-exercises/1-count.js

@@ -4,3 +4,4 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+// Line 3 is updating the value of the count variable by adding 1 to its current value. The = operator is used for assignment, it assigns values to variables. In this case, it takes the current value of count (which is 0) and adds 1 to it, resulting in a new value of 1 for count.

Sprint-3/1-key-implement/1-get-angle-type.js

@@ -8,8 +8,23 @@
 // Then, write the next test! :) Go through this process until all the cases are implemented
 
 function getAngleType(angle) {
-   if (angle === 90) return "Right angle";
+   if (angle === 90) return "Right Angle";
    // read to the end, complete line 36, then pass your test here
+   if (angle > 0 && angle < 90) return "Acute Angle";
+   if (angle > 90 && angle < 180) return "Obtuse Angle";
+   if (angle === 180) return "Straight Angle";
+   if (angle > 180 && angle < 360) return "Reflex Angle";
+   if( angle <= 0 || angle >= 360)return "Invalid Angle"; // This handles angles outside the 0-360 range 
+    //if(angle === 0 || angle === 360) 
+    //return "Invalid Angle"; // This handles angles outside the 0-360 range
+    // you can add more cases here as needed
+    // but make sure to write tests for each case first
+    // and then implement the code to pass the test
+    // this will help you build your function step by step
+    // and ensure that each case is handled correctly
+    // you can also add more tests to cover edge cases
+    // for example, what happens if the angle is negative or greater than 360?
+    // you can also add tests for angles that are not whole numbers
 }
 
 // we're going to use this helper function to make our assertions easier to read
@@ -31,26 +46,70 @@ function assertEquals(actualOutput, targetOutput) {
 // When the angle is exactly 90 degrees,
 // Then the function should return "Right angle"
 const right = getAngleType(90);
-assertEquals(right, "Right angle");
+assertEquals(right, "Right Angle");
 
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
-const acute = getAngleType(45);
-assertEquals(acute, "Acute angle");
+const acute = getAngleType(89.9);
+assertEquals(acute, "Acute Angle");
 
 // Case 3: Identify Obtuse Angles:
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
-const obtuse = getAngleType(120);
+const obtuse = getAngleType(90.5);
+assertEquals(obtuse, "Obtuse Angle");
 // ====> write your test here, and then add a line to pass the test in the function above
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 // ====> write your test here, and then add a line to pass the test in the function above
+const straight = getAngleType(180);
+assertEquals(straight, "Straight Angle");
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
-// ====> write your test here, and then add a line to pass the test in the function above
+// ====> write your test here, and then add a line to pass the test in the function above
+const reflex = getAngleType(270);
+assertEquals(reflex, "Reflex Angle");
+
+// Case 6: Handle Invalid Angles:
+// When the angle is less than 0 or greater than 360 degrees,
+// Then the function should return "Invalid angle"
+// ====> write your test here, and then add a line to pass the test in the function above
+const invalid = getAngleType(361);
+assertEquals(invalid, "Invalid Angle");
+
+// Case 7: Handle Angles Exactly at 0:
+// When the angle is exactly 0 degrees,
+// Then the function should return "Invalid angle"
+const zeroAngle = getAngleType(0);
+assertEquals(zeroAngle, "Invalid Angle"); 
+
+// Case 11: Handle Angles Exactly at 360:
+// When the angle is exactly 360 degrees,
+// Then the function should return "Invalid angle"    
+const fullCircle = getAngleType(360);
+assertEquals(fullCircle, "Invalid Angle");
+
+
+console.log(getAngleType(0));
+console.log(getAngleType(90));
+console.log(getAngleType(180));
+console.log(getAngleType(360));
+console.log(getAngleType(1));
+console.log(getAngleType(91));
+console.log(getAngleType(181));
+console.log(getAngleType(-90)); 
+
+
+
+
+
+
+
+
+
+

Sprint-3/1-key-implement/2-is-proper-fraction.js

@@ -8,7 +8,18 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+  if (numerator < denominator) return true;
+  if (denominator === 0) {
+  throw new Error("Denominator cannot be zero");
+}
+  return false;
+  // Note: This function currently does not handle cases where the denominator is zero.
+  // If you want to handle that case, you can add a check for it.
+  // For example, you could add a case that returns false if the denominator is zero.
+  // If you want to handle negative fractions, you can also add a case for that.
+  // If you want to handle fractions where the numerator is equal to the denominator,
+  // you can also add a case for that.
+  // If you want to handle fractions that are not numbers, you can also add a case for that.
 }
 
 // here's our helper again
@@ -41,13 +52,19 @@ assertEquals(improperFraction, false);
 // Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.
 const negativeFraction = isProperFraction(-4, 7);
 // ====> complete with your assertion
+assertEquals(negativeFraction, true);
 
 // Equal Numerator and Denominator check:
 // Input: numerator = 3, denominator = 3
 // target output: false
 // Explanation: The fraction 3/3 is not a proper fraction because the numerator is equal to the denominator. The function should return false.
 const equalFraction = isProperFraction(3, 3);
 // ====> complete with your assertion
+assertEquals(equalFraction, false);
 
 // Stretch:
 // What other scenarios could you test for?
+
+
+
+console.log(isProperFraction(-4, 3));

Sprint-3/1-key-implement/3-get-card-value.js

@@ -8,7 +8,12 @@
 // write one test at a time, and make it pass, build your solution up methodically
 // just make one change at a time -- don't rush -- programmers are deep and careful thinkers
 function getCardValue(card) {
-    if (rank === "A") return 11;
+  const rank = card.slice(0, -1); // Extract the rank part of the card string
+  if (rank === "A") return 11; // Ace is worth 11 points
+  if (["J", "Q", "K"].includes(rank)) return 10; // Face cards are worth 10 points
+  const numericRank = parseInt(rank, 10); // Convert rank to a number
+  if (numericRank >= 2 && numericRank <= 10) return numericRank; // Number cards return their value
+  else throw new Error("Invalid card rank"); // Throw an error for invalid ranks
 }
 
 // You need to write assertions for your function to check it works in different cases
@@ -25,27 +30,61 @@ function assertEquals(actualOutput, targetOutput) {
 // Given a card string in the format "A♠" (representing a card in blackjack - the last character will always be an emoji for a suit, and all characters before will be a number 2-10, or one letter of J, Q, K, A),
 // When the function getCardValue is called with this card string as input,
 // Then it should return the numerical card value
-const aceofSpades = getCardValue("A♠");
-assertEquals(aceofSpades, 11);
+const aceOfSpades = getCardValue("A♠");
+assertEquals(aceOfSpades, 11);
 
-// Handle Number Cards (2-10):
-// Given a card with a rank between "2" and "9",
-// When the function is called with such a card,
-// Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
-const fiveofHearts = getCardValue("5♥");
 // ====> write your test here, and then add a line to pass the test in the function above
 
 // Handle Face Cards (J, Q, K):
 // Given a card with a rank of "10," "J," "Q," or "K",
 // When the function is called with such a card,
 // Then it should return the value 10, as these cards are worth 10 points each in blackjack.
 
-// Handle Ace (A):
-// Given a card with a rank of "A",
-// When the function is called with an Ace,
-// Then it should, by default, assume the Ace is worth 11 points, which is a common rule in blackjack.
+// Handle Jack (J):
+// Given a card with a rank of "J",
+// When the function is called with a Jack,
+// Then it should return 10 points, as Jacks are worth 10 points in blackjack.
+const jackOfDiamonds = getCardValue("J♦");
+assertEquals(jackOfDiamonds, 10);
+
+// Handle Queen (Q):
+// Given a card with a rank of "Q",
+// When the function is called with a Queen,
+// Then it should return 10 points, as Queens are worth 10 points in blackjack.
+const queenOfHearts = getCardValue("Q♥");
+assertEquals(queenOfHearts, 10);
+
+// Handle King (K):
+// Given a card with a rank of "K",
+// When the function is called with a King,
+// Then it should return 10 points, as Kings are worth 10 points in blackjack.
+const kingOfClubs = getCardValue("K♣");
+assertEquals(kingOfClubs, 10);
+
+// Handle Number Cards (2-10):
+// Given a card with a rank between "2" and "10",
+// When the function is called with such a card,
+// Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5, "10" should return 10).
+const twoOfSpades = getCardValue("2♠");
+assertEquals(twoOfSpades, 2);
+const threeOfHearts = getCardValue("3♥");
+assertEquals(threeOfHearts, 3);
+const fourOfDiamonds = getCardValue("4♦");
+assertEquals(fourOfDiamonds, 4);
+const fiveOfHearts = getCardValue("5♥");
+assertEquals(fiveOfHearts, 5);
+const sixOfClubs = getCardValue("6♣");
+assertEquals(sixOfClubs, 6);
+const sevenOfSpades = getCardValue("7♠");
+assertEquals(sevenOfSpades, 7);
+const eightOfHearts = getCardValue("8♥");
+assertEquals(eightOfHearts, 8);
+const nineOfDiamonds = getCardValue("9♦");
+assertEquals(nineOfDiamonds, 9);
 
 // Handle Invalid Cards:
 // Given a card with an invalid rank (neither a number nor a recognized face card),
 // When the function is called with such a card,
 // Then it should throw an error indicating "Invalid card rank."
+
+console.log(getCardValue('12')); // 11

Sprint-3/2-mandatory-rewrite/1-get-angle-type.js

@@ -1,10 +1,24 @@
 function getAngleType(angle) {
   if (angle === 90) return "Right angle";
   // replace with your completed function from key-implement
+  if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  } else if (angle === 90) {
+    return "Right angle";
+  } else if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  } else if (angle === 180) {
+    return "Straight angle";
+  }else if (angle > 180 && angle < 360) { 
+    return "Reflex angle";
+  }
+  else {
+    return "Invalid angle";
+  }
 
 }
 
-
+console.log(getAngleType(-90)); // Right angle
 
 
 

Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js

@@ -1,24 +1,47 @@
-const getAngleType = require("./1-get-angle-type");
+const getAngleType = require("./1-get-angle-type");   
 
 test("should identify right angle (90°)", () => {
   expect(getAngleType(90)).toEqual("Right angle");
 });
 
+
 // REPLACE the comments with the tests
 // make your test descriptions as clear and readable as possible
 
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
+test("should identify acute angle (<90°)", () => {
+  expect(getAngleType(45)).toEqual("Acute angle");
+});
 
 // Case 3: Identify Obtuse Angles:
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
+test("should identify obtuse angle (>90° and <180°)", () => {
+  expect(getAngleType(120)).toEqual("Obtuse angle");
+});
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
+test("should identify straight angle (180°)", () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
+test("should identify reflex angle (>180° and <360°)", () => {
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});
+// Case 6: Handle Invalid Angles:
+// When the angle is less than 0 degrees or greater than or equal to 360 degrees,
+// Then the function should return "Invalid angle"
+test("should handle invalid angle (<0° or >=360°)", () => { 
+  expect(getAngleType(-10)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+}); 
+
+
+

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js

@@ -1,6 +1,13 @@
 function isProperFraction(numerator, denominator) {
     if (numerator < denominator) return true;
     // add your completed function from key-implement here
+    if (denominator === 0) return false; // Avoid division by zero
+    if (numerator === 0) return true; // Zero is considered a proper fraction
+    if (numerator < 0 || denominator < 0) return false; // Negative fractions are not proper
+    return Math.abs(numerator) < Math.abs(denominator);
 }
 
+console.log(isProperFraction(0, 1));
+console.log(isProperFraction(5,3));
+
 module.exports = isProperFraction;

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js

@@ -2,10 +2,28 @@ const isProperFraction = require("./2-is-proper-fraction");
 
 test("should return true for a proper fraction", () => {
   expect(isProperFraction(2, 3)).toEqual(true);
+  expect(isProperFraction(1, 2)).toEqual(true);
 });
 
 // Case 2: Identify Improper Fractions:
 
+test("should return false for an improper fraction", () => {
+  expect(isProperFraction(5, 3)).toEqual(false);
+  expect(isProperFraction(3, 3)).toEqual(false);
+});
+
 // Case 3: Identify Negative Fractions:
 
+ test("should return false for negative fractions", () => {
+  expect(isProperFraction(-2, 3)).toEqual(false);
+  expect(isProperFraction(2, -3)).toEqual(false);
+  expect(isProperFraction(-2, -3)).toEqual(false);
+});
+
 // Case 4: Identify Equal Numerator and Denominator:
+
+test("should return false when numerator and denominator are equal", () => {
+  expect(isProperFraction(4, 4)).toEqual(false);
+});
+
+

Sprint-3/2-mandatory-rewrite/3-get-card-value.js

@@ -1,5 +1,20 @@
 function getCardValue(card) {
     // replace with your code from key-implement
-    return 11;
+    //return 11;
+    if (card === 'A') {
+        return 11; // Ace can be 11 or 1, but we'll
+    } 
+    else if (card === 'K' || card === 'Q' || card === 'J') {
+        return 10; // Face cards are worth 10
+    } 
+    else {
+        return parseInt(card); // Number cards are worth their face value
+    }
 }
+console.log(getCardValue('A'));
+console.log(getCardValue('K'));
+console.log(getCardValue('J'));
+console.log(getCardValue('Q'));
+console.log(getCardValue('B'));
+
 module.exports = getCardValue;