Sheffield | May-2025 | Declan Williams | Sprint-3

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

@@ -9,6 +9,10 @@
 
 function getAngleType(angle) {
    if (angle === 90) return "Right angle";
+   if (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";
    // read to the end, complete line 36, then pass your test here
 }
 
@@ -43,14 +47,19 @@ assertEquals(acute, "Acute angle");
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
 const obtuse = getAngleType(120);
+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");

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

@@ -9,6 +9,7 @@
 
 function isProperFraction(numerator, denominator) {
     if (numerator < denominator) return true;
+    else return false;
 }
 
 // here's our helper again
@@ -41,13 +42,15 @@ 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(properFraction, 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?

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

@@ -8,9 +8,25 @@
 // 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;
+    var rank = card.slice(0, -1); // get the rank of the card by removing the last character. (the suit is the last character)
+    if (rank === "A") return 11; // this checks for Aces
+    // Handle Number Cards (2-9)
+    if (rank === "2") return 2; // this checks for the twos
+    if (rank === "3") return 3; // this checks for the threes
+    if (rank === "4") return 4; // this checks for the fours
+    if (rank === "5") return 5; // this should check for fives
+    if (rank === "6") return 6; // this checks for the sixes
+    if (rank === "7") return 7; // this checks for the sevens
+    if (rank === "8") return 8; // this checks for the eights
+    if (rank === "9") return 9; // this checks for the nines
+    // Handle Face Cards (J, Q, K) And 10's
+    if (rank === "J") return 10; // this checks for Jacks
+    if (rank === "Q") return 10; // this checks for Queens
+    if (rank === "K") return 10; // this checks for Kings
+    if (rank === "10") return 10; // this checks for Tens
+    // if none of the above its an invalid card and throw an error
+    throw new Error("Invalid card rank."); // this will throw an error if the card is not a valid rank
 }
-
 // You need to write assertions for your function to check it works in different cases
 // we're going to use this helper function to make our assertions easier to read
 // if the actual output matches the target output, the test will pass
@@ -32,20 +48,37 @@ assertEquals(aceofSpades, 11);
 // 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
+const fiveofHearts = getCardValue("5♥");
+const sixofDiamonds = getCardValue("6♦");
+const sevenofClubs = getCardValue("7♣");
+const eightofSpades = getCardValue("8♠");
+assertEquals(fiveofHearts, 5);
+assertEquals(sixofDiamonds, 6);
+assertEquals(sevenofClubs, 7);
+assertEquals(eightofSpades, 8);
 
 // 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.
+const jackOfDiamonds = getCardValue("J♦");
+const queenOfClubs = getCardValue("Q♣");
+const kingOfSpades = getCardValue("K♠"); 
+assertEquals(jackOfDiamonds, 10);
+assertEquals(queenOfClubs, 10);
+assertEquals(kingOfSpades, 10);
 
-// 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 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."
+try {
+  getCardValue("z♠"); // this should throw an error of "Invalid card rank."
+  console.log("Test failed: Expected an error for invalid card rank.");
+} catch(error){
+  assertEquals(error.message, "Invalid card rank.");
+}

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

@@ -1,7 +1,16 @@
 function getAngleType(angle) {
+if (typeof angle !== "number" || angle <= 0 || angle > 360) return "Invalid angle";
+
   if (angle === 90) return "Right angle";
   // replace with your completed function from key-implement
-
+  if (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";
 }
 
 
@@ -10,7 +19,6 @@ function getAngleType(angle) {
 
 
 
-
 // Don't get bogged down in this detail
 // Jest uses CommonJS module syntax by default as it's quite old
 // We will upgrade our approach to ES6 modules in the next course module, so for now 

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

@@ -10,15 +10,31 @@ test("should identify right angle (90°)", () => {
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
+test("should identify as an acute angle (less than 90 degrees)", () => {
+  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 as an obtuse angle (greater then 90 degrees and less then 180 degrees)", () => {
+  expect(getAngleType(90.38)).toEqual("Obtuse angle");
+  expect(getAngleType(179.99)).toEqual("Obtuse angle");
+  expect(getAngleType(139)).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 as a straight angle (exactly 180 degrees)", () => {
+  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 as a reflex angle (greater than 180 degrees and less than 360 degrees)", () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(359.99)).toEqual("Reflex angle");
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});

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

@@ -1,6 +1,6 @@
 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
+    return Math.abs(numerator) < Math.abs(denominator);
 }
 
 module.exports = isProperFraction;

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

@@ -5,7 +5,16 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
+test("should return false for a improper faction", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+});
 
 // Case 3: Identify Negative Fractions:
+test("should return true for a negative fraction", () => {
+  expect(isProperFraction(-4, 7)).toEqual(true);
+});
 
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false for a equal fraction", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+})

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

@@ -1,5 +1,22 @@
 function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
+    var rank = card.slice(0, -1); // get the rank of the card by removing the last character. (the suit is the last character)
+    if (rank === "A") return 11; // this checks for Aces
+    // Handle Number Cards (2-9)
+    if (rank === "2") return 2; // this checks for the twos
+    if (rank === "3") return 3; // this checks for the threes
+    if (rank === "4") return 4; // this checks for the fours
+    if (rank === "5") return 5; // this should check for fives
+    if (rank === "6") return 6; // this checks for the sixes
+    if (rank === "7") return 7; // this checks for the sevens
+    if (rank === "8") return 8; // this checks for the eights
+    if (rank === "9") return 9; // this checks for the nines
+    // Handle Face Cards (J, Q, K) And 10's
+    if (rank === "J") return 10; // this checks for Jacks
+    if (rank === "Q") return 10; // this checks for Queens
+    if (rank === "K") return 10; // this checks for Kings
+    if (rank === "10") return 10; // this checks for Tens
+    // if none of the above its an invalid card and throw an error
+    throw new Error("Invalid card rank."); // this will throw an error if the card is not a valid rank
 }
+
 module.exports = getCardValue;

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

@@ -6,6 +6,29 @@ test("should return 11 for Ace of Spades", () => {
     });
 
 // Case 2: Handle Number Cards (2-10):
+test("should return the correct value for number cards between 2 and 9", () => {
+    expect(getCardValue("2♥")).toEqual(2);
+    expect(getCardValue("3♦")).toEqual(3);
+    expect(getCardValue("4♣")).toEqual(4);
+    expect(getCardValue("5♠")).toEqual(5);
+    expect(getCardValue("6♥")).toEqual(6);
+    expect(getCardValue("7♦")).toEqual(7);
+    expect(getCardValue("8♣")).toEqual(8);
+    expect(getCardValue("9♠")).toEqual(9);
+    expect(getCardValue("10♥")).toEqual(10);
+});
 // Case 3: Handle Face Cards (J, Q, K):
+test("should return 10 for face cards (J, Q, K)", () => {
+    expect(getCardValue("J♠")).toEqual(10);
+    expect(getCardValue("Q♦")).toEqual(10);
+    expect(getCardValue("K♣")).toEqual(10);
+});
 // Case 4: Handle Ace (A):
+test("should return 11 for Aces", () => {
+    expect(getCardValue("A♠")).toEqual(11);
+});
 // Case 5: Handle Invalid Cards:
+test("should throw an error for invalid card ranks", () => {
+    expect(() => getCardValue("X♠")).toThrow("Invalid card rank.");
+    expect(() => getCardValue("1♠")).toThrow("Invalid card rank.");
+})

Sprint-3/3-mandatory-practice/implement/count.js

@@ -1,5 +1,18 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+    // start a count of 0
+    let count = 0;
+
+    // check each of the characters in the string one by one.
+    for (let i = 0; i < stringOfCharacters.length; i++) {
+        // checks if the current characters matches the one were looking for in the string.
+        if (stringOfCharacters[i] === findCharacter)
+            // if it does, we increment the count by 1.
+            count = count + 1;
+}
+
+    return count;
 }
+console.log(countChar("aaaaa", "a")); // 5
+console.log(countChar("hello", "l")); // 2
 
 module.exports = countChar;

Sprint-3/3-mandatory-practice/implement/count.test.js

@@ -22,3 +22,10 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+
+test("should return 0 for no occurrences of a character", () => {
+  const str = "example";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js

@@ -1,5 +1,27 @@
 function getOrdinalNumber(num) {
- return "1st";
+ const lastTwoDigits = num % 100; // gets the last two digits of the number because some like 11, 12, 13 are special cases.
+ const lastDigit= num % 10; // gets the last digit to decide if its going to be "St, Nd, Rd"
+
+ // handles special cases "11, 12 ,13" to always end in "Th".
+  if(lastTwoDigits === 11 || lastTwoDigits === 12 || lastTwoDigits === 13){
+    return num + "th";
+  }
+
+ // will return "St" if the number ends in 1.
+  if (lastDigit === 1){
+    return num + "st";
+  }
+// will return "Nd" if the number ends in 2.
+  if (lastDigit === 2){
+    return num + "nd";
+  }
+// will return "Rd" if the number ends in 3.
+  if (lastDigit === 3){
+    return num + "rd";
+  }
+
+// will return all numbers that end in 4, 5, 6, 7, 8, 9 with "Th".
+  return num + "th";
 }
 
 module.exports = getOrdinalNumber;

Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js

@@ -6,8 +6,43 @@ const getOrdinalNumber = require("./get-ordinal-number");
 
 // Case 1: Identify the ordinal number for 1
 // When the number is 1,
-// Then the function should return "1st"
+// Then the function should return ordinal numbers what end with the "1st"
 
-test("should return '1st' for 1", () => {
+test("should return '1st' for ordinal numbers ending in 1 like (1, 21, 31..)", () => {
     expect(getOrdinalNumber(1)).toEqual("1st");
+    expect(getOrdinalNumber(21)).toEqual("21st");
+    expect(getOrdinalNumber(31)).toEqual("31st")
     });
+
+// Case 2: Identify the ordinal number for 2
+// When the number is 2,
+// The function should then return ordinal numbers what end with the "2nd".
+
+test("Should return `2nd` for ordinal numbers ending in 2 like (2, 22, 32...)", () => {
+    expect(getOrdinalNumber(2)).toEqual("2nd");
+    expect(getOrdinalNumber(22)).toEqual("22nd");
+    expect(getOrdinalNumber(32)).toEqual("32nd");
+});
+
+// Case 3: Identify the ordinal number for 3
+// When the number is 3,
+// The Function should return the ordinal numbers what finish with the "3rd"
+
+test("Should return `3rd` for ordinal numbers ending in 3 like (3, 23, 33...", () => {
+    expect(getOrdinalNumber(3)).toEqual("3rd");
+    expect(getOrdinalNumber(23)).toEqual("23rd");
+    expect(getOrdinalNumber(33)).toEqual("33rd");
+});
+
+// Case 4: identify the special ordinal numbers for 11, 12, 13 
+// When the number is 11, 12, 13,
+// The function should return "11th, 12th, 13th"
+
+test ("should return `11th, 12th, 13th` for special ordinal numbers ending on these", () => {
+    expect(getOrdinalNumber(11)).toEqual("11th");
+    expect(getOrdinalNumber(12)).toEqual("12th");
+    expect(getOrdinalNumber(13)).toEqual("13th");
+    expect(getOrdinalNumber(111)).toEqual("111th");
+    expect(getOrdinalNumber(112)).toEqual("112th");
+    expect(getOrdinalNumber(113)).toEqual("113th");
+});