London | 25-ITP-SEP | Imran Mohamed| Sprint 3 | Coursework/sprint 3 implement and rewrite

Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -12,7 +12,20 @@ function getAngleType(angle) {
     return "Right angle";
   }
    // Run the tests, work out what Case 2 is testing, and implement the required code here.
+  if (angle < 90) {
+       return "Acute angle";
+  }
    // Then keep going for the other cases, one at a time.
+  if (angle > 90 && angle < 180) {
+       return "Obtuse angle";
+  }
+  if (angle === 180) {
+       return "Straight angle";
+  }
+  if (angle > 180 && angle < 360) {
+       return "Reflex angle";
+  }
+
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -50,14 +63,19 @@ 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-implement-and-rewrite-tests/implement/2-is-proper-fraction.js

@@ -8,11 +8,25 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-  if (numerator < denominator) {
+  if (Math.abs(numerator) < Math.abs(denominator)) {
+    return true;
+  }
+  if (numerator >= denominator) {
+    return false;
+  }
+  if (numerator == 0 && denominator !== 0) {
+    return true;
+  }
+  if (denominator === 0) {
+    return false;
+  }
+  if (numerator == denominator) {
+    return false;
+  }
+  if (numerator < 0 && denominator > 0 && Math.abs(numerator) < denominator) {
     return true;
   }
 }
-
 // The line below allows us to load the isProperFraction function into tests in other files.
 // This will be useful in the "rewrite tests with jest" step.
 module.exports = isProperFraction;
@@ -47,13 +61,48 @@ 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?
+// Zero Numerator check:
+// Input: numerator = 0, denominator = 5
+// target output: true
+// Explanation: The fraction 0/5 is a proper fraction because the numerator (0) is less than the denominator (5). The function should return true.
+const zeroNumerator = isProperFraction(0, 5);
+// ====> complete with your assertion
+assertEquals(zeroNumerator, true);
+// Zero Denominator check:
+// Input: numerator = 4, denominator = 0
+// target output: false
+// Explanation: The fraction 4/0 is undefined because division by zero is not allowed. The function should return false.
+const zeroDenominator = isProperFraction(4, 0);
+// ====> complete with your assertion
+assertEquals(zeroDenominator, false);
+// Negative Denominator check:
+// Input: numerator = 3, denominator = -5
+// target output: true
+// Explanation: The fraction 3/-5 is a proper fraction because the absolute value of the numerator (3) is less than the absolute value of the denominator (5). The function should return true.
+const negativeDenominator = isProperFraction(3, -5);
+// ====> complete with your assertion
+assertEquals(negativeDenominator, true);
+// Both Negative check:
+// Input: numerator = -2, denominator = -6
+// target output: true
+// Explanation: The fraction -2/-6 is a proper fraction because the absolute value of the numerator (2) is less than the absolute value of the denominator (6). The function should return true.
+const bothNegative = isProperFraction(-2, -6);
+// ====> complete with your assertion
+assertEquals(bothNegative, true);
+// Zero Numerator and Denominator check:
+// Input: numerator = 0, denominator = 0
+// target output: false
+// Explanation: The fraction 0/0 is undefined. The function should return false.
+const zeroNumeratorDenominator = isProperFraction(0, 0);
+// ====> complete with your assertion
+assertEquals(zeroNumeratorDenominator, false);

Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -8,8 +8,47 @@
 // 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;
+  console.log(card);
+  const rank = card.slice(0, -1);
+  const suit = card.slice(-1);
+  const suits = ["♠", "♥", "♦", "♣"];
+  const ranks = [
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+    "A",
+  ];
+  if (!suits.includes(suit) || !ranks.includes(rank)) {
+    throw new Error("Invalid card rank.");
+  }
+
+  switch (rank) {
+    case "1":
+    case "2":
+    case "3":
+    case "4":
+    case "5":
+    case "6":
+    case "7":
+    case "8":
+    case "9":
+      return parseInt(rank);
+    case "10":
+    case "J":
+    case "Q":
+    case "K":
+      return 10;
+    case "A":
+      return 11;
   }
 }
 
@@ -40,18 +79,36 @@ assertEquals(aceofSpades, 11);
 // 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
-
+assertEquals(fiveofHearts, 5);
 // 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 kingofDiamonds = getCardValue("K♦");
+assertEquals(kingofDiamonds, 10);
+
+const tenofClubs = getCardValue("10♣");
+assertEquals(tenofClubs, 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 aceofHearts = getCardValue("A♥");
+assertEquals(aceofHearts, 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,
 // Then it should throw an error indicating "Invalid card rank."
+
+const invalidCard = getCardValue("1♠");
+assertEquals(invalidCard, "Invalid card rank.");
+
+const invalidCard2 = getCardValue("B♦");
+assertEquals(invalidCard2, "Invalid card rank.");
+
+const invalidCard3 = getCardValue("11");
+assertEquals(invalidCard3, "Invalid card rank.");
+
+const invalidCard4 = getCardValue("3😄");
+assertEquals(invalidCard4, "Invalid card rank.");

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js

@@ -12,15 +12,25 @@ 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 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");
+}); 

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js

@@ -7,7 +7,30 @@ 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 when numerator equals denominator", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});
+
+// Case 5: Zero Numerator:
+test("should return true for zero numerator", () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Case 6: Zero Denominator:
+test("should return false for zero denominator", () => {
+  expect(isProperFraction(4, 0)).toEqual(false);
+});
+
+// Case 7: Negative Denominator:
+test("should return true for negative denominator", () => {
+  expect(isProperFraction(3, -5)).toEqual(true);
+});

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js

@@ -8,6 +8,27 @@ test("should return 11 for Ace of Spades", () => {
 });
 
 // Case 2: Handle Number Cards (2-10):
+test("should return correct value for number cards", () => {
+  expect(getCardValue("2♣")).toEqual(2);
+  expect(getCardValue("5♦")).toEqual(5);
+  expect(getCardValue("10♥")).toEqual(10);
+})
 // Case 3: Handle Face Cards (J, Q, K):
+test("should return 10 for face cards", () => {
+  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 Ace cards", () => {
+  expect(getCardValue("A♣")).toEqual(11);
+  expect(getCardValue("A♦")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+})
 // Case 5: Handle Invalid Cards:
+  test("should throw 'Invalid card rank' for invalid cards", () => {
+    expect(() => getCardValue("1♣")).toThrow("Invalid card rank");
+    expect(() => getCardValue("B♦")).toThrow("Invalid card rank");
+    expect(() => getCardValue("11")).toThrow("Invalid card rank");
+    expect(() => getCardValue("3😄")).toThrow("Invalid card rank");
+})