West Midland | ITP-May-2025 | Saleh Yousef | Module-Structuring-and-Testing-Data | 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
 }
 
@@ -33,6 +37,7 @@ function assertEquals(actualOutput, targetOutput) {
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
 
+
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
@@ -43,14 +48,18 @@ 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(330);
+assertEquals(reflex, "Reflex angle");

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

@@ -40,14 +40,22 @@ assertEquals(improperFraction, false);
 // target output: true
 // 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);
+assertEquals(properFraction, true);
 // ====> complete with your assertion
 
 // 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);
+assertEquals(improperFraction, false);
 // ====> complete with your assertion
 
 // Stretch:
 // What other scenarios could you test for?
+// negative denominators, zero denominators, zero numerators.
+// Negative Denominator check:
+// Input: numerator = 0, denominator = -3
+// target output: true
+const negativeDenominator = isProperFraction(0, -3);
+assertEquals(negativeDenominator, true);

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

@@ -8,9 +8,14 @@
 // 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;
+  if (card === "A") return 11;
+  if (["K", "Q", "J", "10"].includes(card)) return 10;
+  const num = Number(card);
+  if (num >= 2 && num <= 9 && card === num.toString()) return num;
+  throw new Error("Invalid card 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
@@ -25,26 +30,29 @@ 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♠");
+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♥");
+const fiveofHearts = getCardValue("5");
+assertEquals(fiveofHearts, 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.
-
+const tenOfDiamonds = getCardValue("10");
+assertEquals(tenOfDiamonds, 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.
-
+ const handleAce = getCardValue("A");
+ assertEquals(handleAce, 11);
 // 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,

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

@@ -1,18 +1,16 @@
 function getAngleType(angle) {
-  if (angle === 90) return "Right angle";
-  // replace with your completed function from key-implement
-
+   if (angle <= 0 || angle >= 360) return "Invalid 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";
 }
 
 
 
-
-
-
-
-
 // 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 
 // we have just written the CommonJS module.exports syntax for you
-module.exports = getAngleType;
+module.exports = getAngleType;

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

@@ -8,17 +8,21 @@ test("should identify right angle (90°)", () => {
 // 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.each([1, 45, 89.999])("Should identify acute angle (%f°)", (angle) => {
+  expect(getAngleType(angle)).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.each([91, 120, 179.999])("Should identify obtuse angle (%f°)", (angle) => {
+  expect(getAngleType(angle)).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.each([181, 300, 359.999])("Should identify reflex angle (%f°)", (angle) => {
+  expect(getAngleType(angle)).toEqual("Reflex angle");
+}); 

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

@@ -1,6 +1,37 @@
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
-    // add your completed function from key-implement here
+  if (denominator === 0) throw new Error("Denominator cannot be zero.");
+  return Math.abs(numerator) < Math.abs(denominator);
 }
 
+// here's our helper again
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Proper Fraction check:
+const properFraction = isProperFraction(2, 3);
+assertEquals(properFraction, true);
+
+// Improper Fraction check:
+const improperFraction = isProperFraction(5, 2);
+assertEquals(improperFraction, false);
+
+// Negative Fraction check:
+const negativeFraction = isProperFraction(-4, 7);
+assertEquals(negativeFraction, true);
+
+// Equal Numerator and Denominator check:
+const equalFraction = isProperFraction(3, 3);
+assertEquals(equalFraction, false);
+
+// Negative Denominator check:
+const negativeDenominator = isProperFraction(0, -3);
+assertEquals(negativeDenominator, true);
+
+
+
+
 module.exports = isProperFraction;

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

@@ -5,7 +5,14 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
-
+test("should return false for an improper fraction", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+});
 // Case 3: Identify Negative Fractions:
-
+test("should return true for a negative proper fraction", () => {
+  expect(isProperFraction(-4, 7)).toEqual(true);
+});
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false for equal numerator and denominator", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});

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

@@ -1,5 +1,10 @@
 function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
+  const rank = card.slice(0, -1);
+
+  if (rank === "A") return 11;
+  if (["K", "Q", "J", "10"].includes(rank)) return 10;
+  if (/^[2-9]$/.test(rank)) return Number (rank);
+
+  throw new Error("Invalid card rank.");
 }
-module.exports = getCardValue;
+module.exports = getCardValue;

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

@@ -1,11 +1,43 @@
 const getCardValue = require("./3-get-card-value");
 
 test("should return 11 for Ace of Spades", () => {
-    const aceofSpades = getCardValue("A♠");
-    expect(aceofSpades).toEqual(11);
+    expect(getCardValue("A♠")).toEqual(11);
     });
 
 // Case 2: Handle Number Cards (2-10):
+test("should return correct numeric value for number cards", () => {
+    expect(getCardValue("5♥")).toEqual(5);
+    expect(getCardValue("3♣")).toEqual(3);
+    expect(getCardValue("4♦")).toEqual(4);
+
+
+});
+test('returns 10 for Ten of Diamonds', () => {
+  expect(getCardValue('10♦')).toEqual(10);
+});
+
 // Case 3: Handle Face Cards (J, Q, K):
-// Case 4: Handle Ace (A):
-// Case 5: Handle Invalid Cards:
+test.each(["K♣", "Q♦", "J♥"])(
+  'returns 10 for %s',
+  (card) => {
+    expect(getCardValue(card)).toEqual(10);
+  });
+
+// Case 4: Handle Invalid Cards:
+test("should throw an error for invalid card rank", () => {
+    expect(() => getCardValue("Z♣")).toThrow("Invalid card rank.");
+});
+test("should throw an error for invalid card rank", () => {
+    expect(() => getCardValue("11♠")).toThrow("Invalid card rank.");
+});
+
+
+test("should throw an error for hex literal rank", () => {
+    expect(() => getCardValue("0x02♠")).toThrow("Invalid card rank.");
+});
+test("should throw an error for float rank", () => {
+    expect(() => getCardValue("2.1♠")).toThrow("Invalid card rank.");
+});
+test("should throw an error for underscore rank", () => {
+    expect(() => getCardValue("00_02♠")).toThrow("Invalid card rank.");
+});

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

@@ -1,5 +1,10 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+    let count = 0;
+    for (let char of stringOfCharacters) {
+        if (char === findCharacter) {
+            count++;
+        }
+    }
+    return count;
 }
-
-module.exports = countChar;
+module.exports = countChar; 

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

@@ -1,5 +1,6 @@
 // implement a function countChar that counts the number of times a character occurs in a string
 const countChar = require("./count");
+
 // Given a string str and a single character char to search for,
 // When the countChar function is called with these inputs,
 // Then it should:
@@ -22,3 +23,16 @@ 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 count no occurrences of a character", () => {
+const str = "ssss";
+const char = "h";
+const count = countChar(str, char);
+expect(count).toEqual(0);});
+
+// Scenario: Case sensitivity
+test("should respect case sensitivity when counting characters", () => {
+  const str = "AbcA";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,13 @@
 function getOrdinalNumber(num) {
- return "1st";
+  const lastTwo = num % 100;
+  if (lastTwo >= 11 && lastTwo <= 13) {
+    return num + "th";
+  }
+  const last = num % 10;
+  if (last === 1) return num + "st";
+  if (last === 2) return num + "nd";
+  if (last === 3) return num + "rd";
+  return num + "th";
 }
 
 module.exports = getOrdinalNumber;

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

@@ -4,10 +4,29 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // continue testing and implementing getOrdinalNumber for additional cases
 // Write your tests using Jest - remember to run your tests often for continual feedback
 
-// Case 1: Identify the ordinal number for 1
-// When the number is 1,
-// Then the function should return "1st"
+// Case 1: Identify numbers that end with 1 but are not 11
 
-test("should return '1st' for 1", () => {
-    expect(getOrdinalNumber(1)).toEqual("1st");
+test.each([1, 21, 31])("should return '%ist' for %i", (num) => { 
+    expect(getOrdinalNumber(num)).toEqual(`${num}st`);
     });
+
+// Case 2: identify the ordinal numbers that end with 2 but are not 12 
+
+test.each([2, 22, 32])("should return '%ind' for %i", (num) => {
+  expect(getOrdinalNumber(num)).toEqual(`${num}nd`);
+    });
+
+// Case 3: identify the ordinal numbers that end with 3 but not 13
+test.each([3, 23, 33])("should return '%ird' for %i", (num) => {
+  expect(getOrdinalNumber(num)).toEqual(`${num}rd`);
+    });
+
+// Case 4: everything else with th
+test.each([4, 5, 6, 10, 14, 20, 40])("returns '%ith' for %i", (num) => {
+  expect(getOrdinalNumber(num)).toEqual(`${num}th`);
+});
+
+// Case 5: 11th 12th 13th (special teen case)
+test.each([11, 12, 13])("should return '%ith' for %i", (num) => {
+  expect(getOrdinalNumber(num)).toEqual(`${num}th`);
+});

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

@@ -1,5 +1,6 @@
-function repeat() {
-    return "hellohellohello";
+function repeat(str, count) {
+    if (count < 0) throw new Error("Count must be non-negative");
+    return str.repeat(count);
 }
 
 module.exports = repeat;