Cape Town | 26-ITP-Sep | Quentin Gwele | Sprint 2 | coursework/sprint-2-implement-and-rewrite

implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js

@@ -10,3 +10,31 @@ test("Classifies right angles", () => {
   const right = getAngleType(90);
   assert.equal(right, "Right angle");
 });
+test("Classifies acute angles", () => {
+  assert.equal(getAngleType(1), "Acute angle");
+  assert.equal(getAngleType(45), "Acute angle");
+  assert.equal(getAngleType(89), "Acute angle");
+});
+
+test("Classifies obtuse angles", () => {
+  assert.equal(getAngleType(91), "Obtuse angle");
+  assert.equal(getAngleType(135), "Obtuse angle");
+  assert.equal(getAngleType(179), "Obtuse angle");
+});
+
+test("Classifies straight angles", () => {
+  assert.equal(getAngleType(180), "Straight angle");
+});
+
+test("Classifies reflex angles", () => {
+  assert.equal(getAngleType(181), "Reflex angle");
+  assert.equal(getAngleType(270), "Reflex angle");
+  assert.equal(getAngleType(359), "Reflex angle");
+});
+
+test("Classifies invalid angles", () => {
+  assert.equal(getAngleType(0), "Invalid angle");
+  assert.equal(getAngleType(-45), "Invalid angle");
+  assert.equal(getAngleType(360), "Invalid angle");
+  assert.equal(getAngleType(500), "Invalid angle");
+});

implement-and-rewrite-tests/implement-tests-with-node-test/2-is-proper-fraction.test.js

@@ -10,3 +10,33 @@ test("Basic proper fraction", () => {
   // Example: 1/2 is a proper fraction
   assert.equal(isProperFraction(1, 2), true);
 });
+test("Zero numerator is a proper fraction", () => {
+  assert.equal(isProperFraction(0, 5), true);
+});
+
+test("Numerator smaller than denominator is proper", () => {
+  assert.equal(isProperFraction(3, 4), true);
+  assert.equal(isProperFraction(99, 100), true);
+});
+
+test("Numerator equal to denominator is not proper", () => {
+  assert.equal(isProperFraction(1, 1), false);
+  assert.equal(isProperFraction(5, 5), false);
+});
+
+test("Numerator larger than denominator is not proper", () => {
+  assert.equal(isProperFraction(5, 2), false);
+  assert.equal(isProperFraction(7, 3), false);
+});
+
+test("Negative numerator or denominator uses the absolute values", () => {
+  assert.equal(isProperFraction(-1, 2), true);
+  assert.equal(isProperFraction(1, -2), true);
+  assert.equal(isProperFraction(-1, -2), true);
+  assert.equal(isProperFraction(-3, 2), false);
+  assert.equal(isProperFraction(3, -2), false);
+});
+
+test("Zero denominator is not a proper fraction", () => {
+  assert.equal(isProperFraction(1, 0), false);
+});

implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js

@@ -14,3 +14,44 @@ test("Arbitrary non-card string", () => {
 });
 
 // TODO: What other invalid card cases can you think of?
+test("Aces are worth 11", () => {
+  assert.equal(getCardValue("A♠"), 11);
+  assert.equal(getCardValue("A♥"), 11);
+  assert.equal(getCardValue("A♦"), 11);
+  assert.equal(getCardValue("A♣"), 11);
+});
+
+test("Number cards are worth their number", () => {
+  assert.equal(getCardValue("2♠"), 2);
+  assert.equal(getCardValue("5♦"), 5);
+  assert.equal(getCardValue("9♣"), 9);
+});
+
+test("A 10 card has a two-digit rank and is worth 10", () => {
+  assert.equal(getCardValue("10♥"), 10);
+});
+
+test("Face cards are worth 10", () => {
+  assert.equal(getCardValue("J♠"), 10);
+  assert.equal(getCardValue("Q♥"), 10);
+  assert.equal(getCardValue("K♦"), 10);
+});
+
+test("Missing rank or suit throws an error", () => {
+  assert.throws(() => getCardValue(""));
+  assert.throws(() => getCardValue("A"));
+  assert.throws(() => getCardValue("♠"));
+  assert.throws(() => getCardValue("10"));
+});
+
+test("Invalid rank throws an error", () => {
+  assert.throws(() => getCardValue("0♠"));
+  assert.throws(() => getCardValue("1♠"));
+  assert.throws(() => getCardValue("11♠"));
+  assert.throws(() => getCardValue("Z♠"));
+});
+
+test("Invalid suit throws an error", () => {
+  assert.throws(() => getCardValue("5x"));
+  assert.throws(() => getCardValue("A$"));
+});

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

@@ -17,5 +17,10 @@
 // execute the code to ensure all tests pass.
 
 export function getAngleType(angle) {
-  // TODO: Implement this function
+   if (angle > 0 && angle < 90) return "Acute angle";
+  if (angle === 90) return "Right angle";
+  if (angle > 90 && angle < 180) return "Obtuse angle";
+  if (angle === 180) return "Straight angle";
+  if (angle > 180 && angle < 360) return "Reflex angle";
+  return "Invalid angle";
 }

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

@@ -14,5 +14,5 @@
 // execute the code to ensure all tests pass.
 
 export function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return Math.abs(numerator) < Math.abs(denominator);
 }

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

@@ -24,5 +24,16 @@
 // execute the code to ensure all tests pass.
 
 export function getCardValue(card) {
-  // TODO: Implement this function
+   const rank = card.slice(0, -1);
+  const suit = card.slice(-1);
+
+  const validRanks = ["A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"];
+  const validSuits = ["♠", "♥", "♦", "♣"];
+
+  if (!validRanks.includes(rank) || !validSuits.includes(suit)) {
+    throw new Error(`Expected a number followed by a suit, but got "${card}"`);  }
+
+  if (rank === "A") return 11;
+  if (["J", "Q", "K"].includes(rank)) return 10;
+  return Number(rank);
 }

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

@@ -12,7 +12,33 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test(`should return "Right angle" when (angle === 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 === 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" when (angle <= 0 or angle >= 360)`, () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(-45)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(500)).toEqual("Invalid angle");
+});

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

@@ -6,3 +6,34 @@ import { isProperFraction } from "../implement/2-is-proper-fraction.js";
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+// Special case: numerator is zero
+test(`should return true when numerator is zero`, () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Numerator smaller than denominator
+test(`should return true when numerator is smaller than denominator`, () => {
+  expect(isProperFraction(3, 4)).toEqual(true);
+  expect(isProperFraction(99, 100)).toEqual(true);
+});
+
+// Numerator equal to denominator
+test(`should return false when numerator equals denominator`, () => {
+  expect(isProperFraction(1, 1)).toEqual(false);
+  expect(isProperFraction(5, 5)).toEqual(false);
+});
+
+// Numerator larger than denominator
+test(`should return false when numerator is larger than denominator`, () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+  expect(isProperFraction(7, 3)).toEqual(false);
+});
+
+// Negative numbers
+test(`should compare absolute values when either number is negative`, () => {
+  expect(isProperFraction(-1, 2)).toEqual(true);
+  expect(isProperFraction(1, -2)).toEqual(true);
+  expect(isProperFraction(-1, -2)).toEqual(true);
+  expect(isProperFraction(-3, 2)).toEqual(false);
+  expect(isProperFraction(3, -2)).toEqual(false);
+});

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

@@ -16,3 +16,53 @@ test(`Should return 11 when given an ace card`, () => {
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
 
+// Case 1 (continued): every suit of ace
+test(`Should return 11 for an ace of any suit`, () => {
+  expect(getCardValue("A♥")).toEqual(11);
+  expect(getCardValue("A♦")).toEqual(11);
+  expect(getCardValue("A♣")).toEqual(11);
+});
+
+// Number cards (2-10)
+test(`Should return the number for cards 2 to 9`, () => {
+  expect(getCardValue("2♠")).toEqual(2);
+  expect(getCardValue("5♦")).toEqual(5);
+  expect(getCardValue("9♣")).toEqual(9);
+});
+
+test(`Should return 10 for a 10 card`, () => {
+  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 when the rank or suit is missing`, () => {
+  expect(() => getCardValue("")).toThrow();
+  expect(() => getCardValue("A")).toThrow();
+  expect(() => getCardValue("♠")).toThrow();
+  expect(() => getCardValue("10")).toThrow();
+});
+
+test(`Should throw an error for an invalid rank`, () => {
+  expect(() => getCardValue("0♠")).toThrow();
+  expect(() => getCardValue("1♠")).toThrow();
+  expect(() => getCardValue("11♠")).toThrow();
+  expect(() => getCardValue("Z♠")).toThrow();
+});
+
+test(`Should throw an error for an invalid suit`, () => {
+  expect(() => getCardValue("5x")).toThrow();
+  expect(() => getCardValue("A$")).toThrow();
+});
+
+test(`Should throw an error with a helpful message`, () => {
+  expect(() => getCardValue("invalid")).toThrow(
+    /Expected a number followed by a suit/
+  );
+});