Cape Town | 26-ITP-May | Liyema Mfengwana | Sprint 3 | Implement and Rewrite Tests

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

@@ -35,3 +35,44 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+//
+
+function getAngleType(angle) {
+  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";
+  }
+}
+
+module.exports = getAngleType;
+
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Tests
+assertEquals(getAngleType(45), "Acute angle");
+assertEquals(getAngleType(90), "Right angle");
+assertEquals(getAngleType(120), "Obtuse angle");
+assertEquals(getAngleType(180), "Straight angle");
+assertEquals(getAngleType(270), "Reflex angle");
+
+assertEquals(getAngleType(0), "Invalid angle");
+assertEquals(getAngleType(-10), "Invalid angle");
+assertEquals(getAngleType(360), "Invalid angle");
+assertEquals(getAngleType(500), "Invalid angle");
+
+console.log("All tests passed!");

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

@@ -31,3 +31,48 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+
+//
+
+function isProperFraction(numerator, denominator) {
+  if (denominator === 0) {
+    return false;
+  }
+
+  return Math.abs(numerator) < Math.abs(denominator);
+}
+
+// Export for later testing
+module.exports = isProperFraction;
+
+// Helper function
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// TESTS
+
+// Proper fractions
+assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 4), true);
+
+// Not proper (equal)
+assertEquals(isProperFraction(5, 5), false);
+
+// Not proper (numerator bigger)
+assertEquals(isProperFraction(7, 4), false);
+
+// Zero numerator
+assertEquals(isProperFraction(0, 5), true);
+
+// Invalid denominator
+assertEquals(isProperFraction(1, 0), false);
+
+// Negative values
+assertEquals(isProperFraction(-1, 3), true);
+assertEquals(isProperFraction(-5, 2), false);
+
+console.log("✅ All tests passed");

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

@@ -52,3 +52,68 @@ try {
 }
 
 // What other invalid card cases can you think of?
+
+function getCardValue(card) {
+  const cardPattern = /^(A|[2-9]|10|J|Q|K)[♠♥♦♣]$/;
+
+  if (!cardPattern.test(card)) {
+    throw new Error("Invalid card");
+  }
+
+  const rank = card.slice(0, -1);
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (["J", "Q", "K"].includes(rank)) {
+    return 10;
+  }
+
+  return Number(rank);
+}
+
+module.exports = getCardValue;
+
+// Helper
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Tests
+assertEquals(getCardValue("2♥"), 2);
+assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("10♦"), 10);
+
+assertEquals(getCardValue("A♣"), 11);
+
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♦"), 10);
+assertEquals(getCardValue("K♥"), 10);
+
+// Invalid tests
+try {
+  getCardValue("invalid");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid text");
+}
+
+try {
+  getCardValue("1♠");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid rank");
+}
+
+try {
+  getCardValue("AX");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid suit");
+}
+
+console.log("🎉 Tests completed");

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

@@ -18,3 +18,45 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 // Case 4: Straight angle
 // Case 5: Reflex angles
 // Case 6: Invalid angles
+
+// This statement loads the getAngleType function you wrote in the implement directory.
+const getAngleType = require("../implement/1-get-angle-type");
+
+// Case 1: Acute angles
+test(`should return "Acute angle" when (0 < angle < 90)`, () => {
+  expect(getAngleType(1)).toEqual("Acute angle");
+  expect(getAngleType(45)).toEqual("Acute angle");
+  expect(getAngleType(89)).toEqual("Acute angle");
+});
+
+// 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 values`, () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(-1)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(500)).toEqual("Invalid angle");
+});

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

@@ -8,3 +8,38 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+//
+
+// This statement loads the isProperFraction function
+const isProperFraction = require("../implement/2-is-proper-fraction");
+
+// Case 1: denominator is zero
+test(`should return false when denominator is zero`, () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
+
+// Case 2: numerator is zero
+test(`should return true when numerator is zero and denominator is non-zero`, () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Case 3: positive proper fractions
+test(`should return true for positive proper fractions`, () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+  expect(isProperFraction(3, 4)).toEqual(true);
+});
+
+// Case 4: positive improper fractions
+test(`should return false when numerator is equal or greater`, () => {
+  expect(isProperFraction(5, 5)).toEqual(false);
+  expect(isProperFraction(7, 4)).toEqual(false);
+});
+
+// Case 5: negative fractions
+test(`should correctly handle negative values`, () => {
+  expect(isProperFraction(-1, 3)).toEqual(true);
+  expect(isProperFraction(-5, 2)).toEqual(false);
+  expect(isProperFraction(1, -3)).toEqual(true);
+  expect(isProperFraction(-1, -2)).toEqual(true);
+});

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

@@ -18,3 +18,40 @@ test(`Should return 11 when given an ace card`, () => {
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
 
+//
+
+// This statement loads the getCardValue function
+const getCardValue = require("../implement/3-get-card-value");
+
+// Case 1: Ace (A)
+test(`Should return 11 when given an ace card`, () => {
+  expect(getCardValue("A♠")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+});
+
+// Case 2: Number Cards (2–10)
+test(`Should return the numeric 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 error for invalid cards`, () => {
+  expect(() => getCardValue("invalid")).toThrow();
+
+  expect(() => getCardValue("1♠")).toThrow();
+
+  expect(() => getCardValue("11♥")).toThrow();
+
+  expect(() => getCardValue("AX")).toThrow();
+
+  expect(() => getCardValue("")).toThrow();
+});