Glasgow | ITP May -25 | Mirabelle Morah | Module-Structuring-and-Testing-Data | Coursework/sprint-3

Sprint-3/1-key-implement/1-get-angle-type.js

@@ -8,8 +8,13 @@
 // Then, write the next test! :) Go through this process until all the cases are implemented
 
 function getAngleType(angle) {
-   if (angle === 90) return "Right angle";
-   // read to the end, complete line 36, then pass your test here
+  if (angle === 90) return "Right angle";
+  // read to the end, complete line 36, then pass your test here
+  else if (angle < 90) return "Acute 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";
 }
 
 // we're going to use this helper function to make our assertions easier to read
@@ -43,14 +48,18 @@ 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);
-// ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(obtuse, "Obtuse angle");
 
 // 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-key-implement/2-is-proper-fraction.js

@@ -8,7 +8,10 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+  if (denominator === 0) return false;
+  if (numerator < denominator) return true;
+  if (numerator >= denominator) return false;
+
 }
 
 // here's our helper again
@@ -40,14 +43,20 @@ assertEquals(improperFraction, false);
 // target output: true
 // 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 Denominator check:
+// Input: numerator = 1, denominator = 0
+// target output: false
+// Explanation: The fraction 1/0 is undefined because division by zero is not allowed. The function should return false.
+const zeroDenominator = isProperFraction(1, 0);
+assertEquals(zeroDenominator, false);

Sprint-3/1-key-implement/3-get-card-value.js

@@ -8,7 +8,14 @@
 // 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;
+  const rank = card.slice(0, -1);
+  if (rank === "A") return 11;
+
+  if (["K", "Q", "J", "10"].includes(rank)) return 10;
+  const num = Number(rank);
+  if (num >= 2 && num <= 9) return num;
+
+  throw new Error("Invalid card rank");
 }
 
 // You need to write assertions for your function to check it works in different cases
@@ -33,19 +40,44 @@ assertEquals(aceofSpades, 11);
 // When the function is called with such a card,
 // 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 tenofDiamonds = getCardValue("10♦");
+assertEquals(tenofDiamonds, 10);
+
+const jackofClubs = getCardValue("J♣");
+assertEquals(jackofClubs, 10);
+
+const queenofSpades = getCardValue("Q♠");
+assertEquals(queenofSpades, 10);
+
+const kingofHearts = getCardValue("K♥");
+assertEquals(kingofHearts, 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 aceOfClubs = getCardValue("A♣");
+assertEquals(aceOfClubs, 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."
+
+try {
+  getCardValue("1♠");
+  console.assert(false, "Expected an error to be thrown for invalid card");
+} catch (e) {
+  console.assert(
+    e.message === "Invalid card rank",
+    `Expected error message "Invalid card rank", got "${e.message}"`
+  );
+}

Sprint-3/2-mandatory-rewrite/1-get-angle-type.js

@@ -1,18 +1,15 @@
 function getAngleType(angle) {
   if (angle === 90) return "Right angle";
-  // replace with your completed function from key-implement
-
+  // read to the end, complete line 36, then pass your test here
+  else if (angle < 90) return "Acute 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";
 }
 
-
-
-
-
-
-
-
 // Don't get bogged down in this detail
 // Jest uses CommonJS module syntax by default as it's quite old
-// We will upgrade our approach to ES6 modules in the next course module, so for now 
+// We will upgrade our approach to ES6 modules in the next course module, so for now
 // we have just written the CommonJS module.exports syntax for you
-module.exports = getAngleType;
+module.exports = getAngleType;

Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js

@@ -11,14 +11,30 @@ test("should identify right angle (90°)", () => {
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
 
+test("should identify acute angle (45°)", () => {
+  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 (135°)", () => {
+  expect(getAngleType(135)).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 (270°)", () => {
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js

@@ -1,6 +1,5 @@
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
-    // add your completed function from key-implement here
+  if (denominator === 0) return false;
+  return Math.abs(numerator) < Math.abs(denominator);
 }
-
-module.exports = isProperFraction;
+module.exports = isProperFraction;

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js

@@ -5,7 +5,21 @@ 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 false for a negative fraction", () => {
+  expect(isProperFraction(-4, 7)).toEqual(true);
+});
+
+// Case 3.1: Identify Negative Fractions:
+test("should return false for a negative fraction", () => {
+  expect(isProperFraction(-4, 3)).toEqual(false);
+});
 
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false for equal numerator and denominator", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});

Sprint-3/2-mandatory-rewrite/3-get-card-value.js

@@ -1,5 +1,14 @@
 function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
+  const rank = card.slice(0, -1);
+  if (rank === "A") return 11;
+
+  if (["K", "Q", "J", "10"].includes(rank)) return 10;
+
+  if (["2", "3", "4", "5", "6", "7", "8", "9"].includes(rank)) {
+    return Number(rank);
+  }
+
+  throw new Error("Invalid card rank");
 }
-module.exports = getCardValue;
+
+module.exports = getCardValue;

Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js

@@ -1,11 +1,46 @@
 const getCardValue = require("./3-get-card-value");
 
 test("should return 11 for Ace of Spades", () => {
-    const aceofSpades = getCardValue("A♠");
-    expect(aceofSpades).toEqual(11);
-    });
+  expect(getCardValue("A♠")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+});
 
 // Case 2: Handle Number Cards (2-10):
+
+test("should return correct value for number cards (2-10)", () => {
+  for (let i = 2; i <= 10; i++) {
+    expect(getCardValue(`${i}♠`)).toEqual(i);
+    expect(getCardValue(`${i}♥`)).toEqual(i);
+  }
+});
+
+// Alternate long method
+
+// test("should return the value of number cards (2-10)", () => {
+//   expect(getCardValue("2♠")).toEqual(2);
+//   expect(getCardValue("3♠")).toEqual(3);
+//   expect(getCardValue("4♠")).toEqual(4);
+//   expect(getCardValue("5♠")).toEqual(5);
+//   expect(getCardValue("6♠")).toEqual(6);
+//   expect(getCardValue("7♠")).toEqual(7);
+//   expect(getCardValue("8♠")).toEqual(8);
+//   expect(getCardValue("9♠")).toEqual(9);
+//   expect(getCardValue("10♠")).toEqual(10);
+// });
+
 // Case 3: Handle Face Cards (J, Q, K):
-// Case 4: Handle Ace (A):
-// Case 5: Handle Invalid Cards:
+test("should return 10 or face cards (J, Q, K)", () => {
+  ["J", "Q", "K"].forEach((rank) => {
+    expect(getCardValue(`${rank}♣`)).toEqual(10);
+    expect(getCardValue(`${rank}♦`)).toEqual(10);
+  });
+});
+
+
+// Case 4: Handle Invalid Cards:
+test("should throw an error for invalid card", () => {
+  expect(() => getCardValue("Invalid")).toThrow("Invalid card rank");
+  expect(() => getCardValue("0x02♠")).toThrow("Invalid card rank");
+  expect(() => getCardValue("2.1♠")).toThrow("Invalid card rank");
+  expect(() => getCardValue("")).toThrow("Invalid card rank");
+});

Sprint-3/3-mandatory-practice/implement/count.js

@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+  let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count;
 }
 
-module.exports = countChar;
+module.exports = countChar;

Sprint-3/3-mandatory-practice/implement/count.test.js

@@ -22,3 +22,10 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+
+test("should return 0 when character does not exist in the string", () => {
+  const str = "hello";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js

@@ -1,5 +1,15 @@
 function getOrdinalNumber(num) {
- return "1st";
+  if (typeof num !== "number" || !Number.isInteger(num)) {
+    throw new Error("Input must be an integer.");
+  }
+
+  const suffixes = ["th", "st", "nd", "rd"];
+  const remainder = num % 100;
+
+  return (
+    num +
+    (suffixes[(remainder - 20) % 10] || suffixes[remainder] || suffixes[0])
+  );
 }
 
-module.exports = getOrdinalNumber;
+module.exports = getOrdinalNumber;

Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js

@@ -8,6 +8,46 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // When the number is 1,
 // Then the function should return "1st"
 
-test("should return '1st' for 1", () => {
-    expect(getOrdinalNumber(1)).toEqual("1st");
-    });
+test("append 'st' to numbers ending in 1, except those ending in 11", () => {
+  expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(101)).toEqual("101st");
+  expect(getOrdinalNumber(111)).toEqual("111th"); // special case
+});
+
+test("append 'nd' to numbers ending in 2, except those ending in 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(102)).toEqual("102nd");
+  expect(getOrdinalNumber(112)).toEqual("112th"); // special case
+});
+
+test("append 'rd' to numbers ending in 3, except those ending in 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(103)).toEqual("103rd");
+  expect(getOrdinalNumber(113)).toEqual("113th"); // special case
+});
+
+test("append 'th' to numbers ending in 4-9 or 0", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(14)).toEqual("14th");
+  expect(getOrdinalNumber(19)).toEqual("19th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+});
+
+test("append 'th' to numbers ending in 11, 12, 13", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(1112)).toEqual("1112th");
+  expect(getOrdinalNumber(1013)).toEqual("1013th");
+});
+
+test("throw error for non-integer inputs", () => {
+  expect(() => getOrdinalNumber("5")).toThrow("Input must be an integer.");
+  expect(() => getOrdinalNumber(5.5)).toThrow("Input must be an integer.");
+  expect(() => getOrdinalNumber(null)).toThrow("Input must be an integer.");
+});