Birmingham | 26-ITP-May | Toluwalase Tiamiyu | Sprint 3 | Coursework

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

@@ -15,7 +15,19 @@
 // execute the code to ensure all tests pass.
 
 function getAngleType(angle) {
-  // TODO: Implement this function
+  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";
+  }
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -35,3 +47,21 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+const acute = getAngleType(45);
+assertEquals(acute, "Acute angle");
+
+const obtuse = getAngleType(120);
+assertEquals(obtuse, "Obtuse angle");
+
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
+
+const reflex = getAngleType(270);
+assertEquals(reflex, "Reflex angle");
+
+const invalidNegative = getAngleType(-10);
+assertEquals(invalidNegative, "Invalid angle");
+
+const invalidOver360 = getAngleType(400);
+assertEquals(invalidOver360, "Invalid angle");

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

@@ -11,7 +11,10 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  if (denominator === 0) {
+    return false;
+  }
+  return Math.abs(numerator) < Math.abs(denominator);
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +34,8 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 1), false);
+assertEquals(isProperFraction(1, 0), false);
+assertEquals(isProperFraction(-1, 2), true);
+assertEquals(isProperFraction(1, -2), true);
+assertEquals(isProperFraction(-3, -1), false);

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

@@ -22,7 +22,35 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const validRanks = [
+    "A",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+  ];
+  // The suit is always the last character
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+  if (!validSuits.includes(suit) || !validRanks.includes(rank)) {
+    throw new Error("Invalid card");
+  }
+  if (rank === "A") {
+    return 11;
+  } else if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  } else {
+    return Number(rank);
+  }
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -39,7 +67,18 @@ function assertEquals(actualOutput, targetOutput) {
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 // Examples:
+// Number cards
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("2♥"), 2);
+assertEquals(getCardValue("10♦"), 10);
+
+// Ace
+assertEquals(getCardValue("A♠"), 11);
+
+// Face cards
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♦"), 10);
+assertEquals(getCardValue("K♥"), 10);
 
 // Handling invalid cards
 try {
@@ -52,3 +91,34 @@ try {
 }
 
 // What other invalid card cases can you think of?
+
+try {
+  getCardValue("1♠"); // "1" isn't a valid rank
+  console.error("Error was not thrown for invalid rank 😢");
+} catch (e) {
+  console.log("Error thrown for invalid rank 🎉");
+}
+
+// Invalid suit
+try {
+  getCardValue("9♦️"); // wrong/extra character in suit
+  console.error("Error was not thrown for invalid suit 😢");
+} catch (e) {
+  console.log("Error thrown for invalid suit 🎉");
+}
+
+// Completely invalid string
+try {
+  getCardValue("invalid");
+  console.error("Error was not thrown for invalid card 😢");
+} catch (e) {
+  console.log("Error thrown for invalid card 🎉");
+}
+
+// Empty string
+try {
+  getCardValue("");
+  console.error("Error was not thrown for empty string 😢");
+} catch (e) {
+  console.log("Error thrown for empty string 🎉");
+}

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

@@ -14,7 +14,34 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test('should return "Right angle" when angle is 90', () => {
+  expect(getAngleType(90)).toEqual("Right angle");
+});
+
 // Case 3: Obtuse angles
+test('should return "Obtuse angle" when (90 < angle < 180)', () => {
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(135)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+
 // Case 4: Straight angle
+test('should return "Straight angle" when angle is 180', () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
+
 // Case 5: Reflex angles
+test('should return "Reflex angle" when (180 < angle < 360)', () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(270)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
+
 // Case 6: Invalid angles
+test('should return "Invalid angle" for out-of-range or non-numeric values', () => {
+  expect(getAngleType(-10)).toEqual("Invalid angle");
+  expect(getAngleType(400)).toEqual("Invalid angle");
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType("abc")).toEqual("Invalid angle");
+  expect(getAngleType(undefined)).toEqual("Invalid angle");
+});

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

@@ -8,3 +8,37 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+// Special case: numerator is zero
+test("should return false when denominator is zero", () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
+
+// Positive proper fractions
+test("should return true for positive proper fractions", () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+  expect(isProperFraction(3, 4)).toEqual(true);
+});
+
+// Positive improper fractions
+test("should return false for positive improper fractions", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+  expect(isProperFraction(4, 4)).toEqual(false); // equal numerator/denominator
+});
+
+// Negative numbers
+test("should handle negative numerators and denominators", () => {
+  expect(isProperFraction(-1, 2)).toEqual(true);
+  expect(isProperFraction(1, -2)).toEqual(true);
+  expect(isProperFraction(-3, -4)).toEqual(true);
+  expect(isProperFraction(-5, 2)).toEqual(false);
+});
+
+// Numerator is zero
+test("should return true when numerator is zero and denominator is non-zero", () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Both zero
+test("should return false when both numerator and denominator are zero", () => {
+  expect(isProperFraction(0, 0)).toEqual(false);
+});

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

@@ -5,16 +5,33 @@ const getCardValue = require("../implement/3-get-card-value");
 // TODO: Write tests in Jest syntax to cover all possible outcomes.
 
 // Case 1: Ace (A)
-test(`Should return 11 when given an ace card`, () => {
+test("Should return 11 when given an ace card", () => {
   expect(getCardValue("A♠")).toEqual(11);
 });
 
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
+test("should return correct value for number cards", () => {
+  expect(getCardValue("2♠")).toEqual(2);
+  expect(getCardValue("5♥")).toEqual(5);
+  expect(getCardValue("9♦")).toEqual(9);
+  expect(getCardValue("10♣")).toEqual(10);
+});
 //   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);
+});
+
 //   Invalid Cards
+test("should throw an error for invalid cards", () => {
+  expect(() => getCardValue("1♠")).toThrow();
+  expect(() => getCardValue("Z♣")).toThrow();
+  expect(() => getCardValue("A")).toThrow(); // missing suit
+  expect(() => getCardValue("")).toThrow(); // empty string
+});
 
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
-