London | 26-ITP-May | Bisrat Tesfay | Sprint 3 | Implement and rewrite

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

@@ -16,6 +16,27 @@
 
 function getAngleType(angle) {
   // TODO: Implement this function
+  if (angle <= 0 || angle >= 360) {
+    return "Invalid angle";
+  }
+
+  if (angle < 90) {
+    return "Acute angle";
+  }
+
+  if (angle === 90) {
+    return "Right angle";
+  }
+
+  if (angle < 180) {
+    return "Obtuse angle";
+  }
+
+  if (angle === 180) {
+    return "Straight angle";
+  }
+
+  return "Reflex angle";
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -35,3 +56,12 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+assertEquals(getAngleType(45), "Acute angle");
+assertEquals(getAngleType(90), "Right angle");
+assertEquals(getAngleType(120), "Obtuse angle");
+assertEquals(getAngleType(180), "Straight angle");
+assertEquals(getAngleType(200), "Reflex angle");
+
+assertEquals(getAngleType(0), "Invalid angle");
+assertEquals(getAngleType(-10), "Invalid angle");
+assertEquals(getAngleType(360), "Invalid angle");

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

@@ -12,6 +12,11 @@
 
 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 +36,9 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 4), true);
+assertEquals(isProperFraction(5, 10), true);
+assertEquals(isProperFraction(5, 5), false);
+assertEquals(isProperFraction(10, 5), false);
+assertEquals(isProperFraction(7, 3), false);

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

@@ -23,6 +23,27 @@
 
 function getCardValue(card) {
   // TODO: Implement this function
+  const rank = card.slice(0, card.length - 1);
+
+  if (
+    rank !== "A" &&
+    rank !== "K" &&
+    rank !== "Q" &&
+    rank !== "J" &&
+    isNaN(rank)
+  ) {
+    throw new Error("Invalid card");
+  }
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (rank === "K" || rank === "Q" || rank === "J") {
+    return 10;
+  }
+
+  return Number(rank);
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -40,6 +61,13 @@ function assertEquals(actualOutput, targetOutput) {
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 // Examples:
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("A♠"), 11);
+assertEquals(getCardValue("K♥"), 10);
+assertEquals(getCardValue("Q♦"), 10);
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("10♠"), 10);
+assertEquals(getCardValue("2♥"), 2);
+assertEquals(getCardValue("9♣"), 9);
 
 // Handling invalid cards
 try {
@@ -52,3 +80,30 @@ try {
 }
 
 // What other invalid card cases can you think of?
+try {
+  getCardValue("1♠");
+  console.error("Should throw error");
+} catch (e) {
+  console.log("Error thrown correctly");
+}
+
+try {
+  getCardValue("11♠");
+  console.error("Should throw error");
+} catch (e) {
+  console.log("Error thrown correctly");
+}
+
+try {
+  getCardValue("A");
+  console.error("Should throw error");
+} catch (e) {
+  console.log("Error thrown correctly");
+}
+
+try {
+  getCardValue("♠A");
+  console.error("Should throw error");
+} catch (e) {
+  console.log("Error thrown correctly");
+}

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

@@ -14,7 +14,33 @@ 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(120)).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 invalid angles`, () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(-10)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(400)).toEqual("Invalid angle");
+});

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

@@ -8,3 +8,43 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+// Positive proper fraction
+test("should return true for a proper positive fraction", () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+});
+
+// Positive improper fraction
+test("should return false for an improper positive fraction", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+});
+
+// Equal numerator and denominator
+test("should return false when numerator equals denominator", () => {
+  expect(isProperFraction(4, 4)).toEqual(false);
+});
+
+// Zero numerator
+test("should return true when numerator is zero", () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Zero denominator
+test("should return false when denominator is zero", () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
+
+// Both numerator and denominator are negative
+test("should return true for a proper fraction with both values negative", () => {
+  expect(isProperFraction(-1, -2)).toEqual(true);
+});
+
+// Negative numerator, positive denominator
+test("should return true when numerator is negative and denominator is positive", () => {
+  expect(isProperFraction(-1, 2)).toEqual(true);
+});
+
+// Positive numerator, negative denominator
+test("should return false when numerator is positive and denominator is negative", () => {
+  expect(isProperFraction(1, -2)).toEqual(false);
+});

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

@@ -9,6 +9,27 @@ test(`Should return 11 when given an ace card`, () => {
   expect(getCardValue("A♠")).toEqual(11);
 });
 
+// Case 2: Number cards (2–10)
+test("should return the correct value for number cards", () => {
+  expect(getCardValue("2♥")).toEqual(2);
+  expect(getCardValue("5♦")).toEqual(5);
+  expect(getCardValue("10♣")).toEqual(10);
+});
+
+// Case 3: 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: Invalid cards
+test("should throw an error for invalid cards", () => {
+  expect(() => getCardValue("1♠")).toThrow();
+  expect(() => getCardValue("11♣")).toThrow();
+  expect(() => getCardValue("Z♥")).toThrow();
+  expect(() => getCardValue("invalid")).toThrow();
+});
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
 //   Face Cards (J, Q, K)
@@ -17,4 +38,3 @@ test(`Should return 11 when given an ace card`, () => {
 // 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
-