Birmingham | 25-ITP-Sep | Joy Opachavalit | Sprint 3 | coursework/sprint-3-implement-and-rewrite

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

@@ -12,7 +12,19 @@ function getAngleType(angle) {
     return "Right angle";
   }
    // Run the tests, work out what Case 2 is testing, and implement the required code here.
+  if (angle < 90) {
+    return "Acute angle";
+  }
    // Then keep going for the other cases, one at a time.
+  if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  }
+  if (angle === 180) {
+    return "Straight angle";
+  }
+  if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  }
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -50,14 +62,16 @@ 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
+const reflex = getAngleType(250);
+assertEquals(reflex, "Reflex angle");

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

@@ -8,8 +8,16 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
+  // First check: both numerator and denominator should be positive
+  if (numerator < 0 || denominator < 0) {
+    return false;
+  }
+
+  // Second check: numerator should be less than denominator
   if (numerator < denominator) {
     return true;
+  } else {
+    return false;
   }
 }
 
@@ -46,14 +54,23 @@ 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);
+assertEquals(negativeFraction, true);
 // ====> complete with your assertion
 
 // 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);
+assertEquals(equalFraction, false);
 // ====> complete with your assertion
 
 // Stretch:
 // What other scenarios could you test for?
+// Zero Numerator check:
+// Input: numerator = 0, denominator = 5
+// target output: true
+// Explanation: The fraction 0/5 is a proper fraction because the numerator (0) is less than the denominator (5). The function should return true.
+const zeroNumerator = isProperFraction(0, 5);
+assertEquals(zeroNumerator, true);
+

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

@@ -8,9 +8,24 @@
 // 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) {
+  // Extract the rank (all characters except the last one which is the suit)
+  const rank = card.slice(0, -1);
+
   if (rank === "A") {
     return 11;
   }
+
+  const numValue = parseInt(rank, 10);
+  if (numValue >= 2 && numValue <= 10) {
+    return numValue;
+  }
+
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+
+  // If we get here, it's an invalid card - return undefined
+  return undefined;
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -39,19 +54,27 @@ 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♥");
+assertEquals(fiveofHearts, 5);
 // ====> write your test here, and then add a line to pass the test in the function above
 
 // 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 kingofDiamonds = getCardValue("K♦");
+assertEquals(kingofDiamonds, 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."
+const invalidCard = getCardValue("1♣");
+assertEquals(invalidCard, undefined);
+

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

@@ -12,15 +12,27 @@ test("should identify right angle (90°)", () => {
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
+test("should identify acute angle (<90°)", () => {
+  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 (>90° and <180°)", () => {
+  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 (>180° and <360°)", () => {
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});

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

@@ -7,7 +7,16 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
+test("should return false for an improper fraction", () => {  
+  expect(isProperFraction(5, 3)).toEqual(false);
+});
 
 // Case 3: Identify Negative Fractions:
+test("should return false for a negative fraction", () => {
+  expect(isProperFraction(-2, 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-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js

@@ -8,6 +8,28 @@ test("should return 11 for Ace of Spades", () => {
 });
 
 // Case 2: Handle Number Cards (2-10):
+test("should return numeric value for number cards (2-10)", () => {
+  const fiveofHearts = getCardValue("5♥");
+  expect(fiveofHearts).toEqual(5);
+});     
 // Case 3: Handle Face Cards (J, Q, K):
+test("should return 10 for face cards (J, Q, K)", () => {
+  const jackOfDiamonds = getCardValue("J♦");
+  const queenOfClubs = getCardValue("Q♣");
+  const kingOfHearts = getCardValue("K♥");
+  expect(jackOfDiamonds).toEqual(10);
+  expect(queenOfClubs).toEqual(10);
+  expect(kingOfHearts).toEqual(10);
+});
+
 // Case 4: Handle Ace (A):
+test("should return 11 for Ace (A)", () => {
+  const aceOfSpades = getCardValue("A♠");
+  expect(aceOfSpades).toEqual(11);
+});
+
 // Case 5: Handle Invalid Cards:
+test("should return undefined for invalid cards", () => {
+  const invalidCard = getCardValue("1♠");
+  expect(invalidCard).toEqual(undefined);
+});

Sprint-3/2-practice-tdd/count.js

@@ -1,5 +1,15 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+
+  // Loop through each character in the string
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    // If the current character matches the character we're looking for
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+
+  return count;
 }
 
 module.exports = countChar;

Sprint-3/2-practice-tdd/count.test.js

@@ -22,3 +22,9 @@ 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 for no occurrences", () => {
+  const str = "hello";
+  const char = "x";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

Sprint-3/2-practice-tdd/get-ordinal-number.js

@@ -1,5 +1,21 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  // Handle special cases for teens (11th, 12th, 13th)
+  if (num % 100 >= 11 && num % 100 <= 13) {
+    return num + "th";
+  }
+
+  // Handle based on last digit
+  const lastDigit = num % 10;
+
+  if (lastDigit === 1) {
+    return num + "st";
+  } else if (lastDigit === 2) {
+    return num + "nd";
+  } else if (lastDigit === 3) {
+    return num + "rd";
+  } else {
+    return num + "th";
+  }
 }
 
 module.exports = getOrdinalNumber;

Sprint-3/2-practice-tdd/get-ordinal-number.test.js

@@ -11,3 +11,100 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
 });
+
+// Case 2: Identify the ordinal number for 2
+// When the number is 2,
+// Then the function should return "2nd"
+
+test("should return '2nd' for 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+});
+
+// Case 3: Identify the ordinal number for 3
+// When the number is 3,
+// Then the function should return "3rd"
+
+test("should return '3rd' for 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+});
+
+// Case 4: Identify the ordinal number for 4
+// When the number is 4,
+// Then the function should return "4th"
+
+test("should return '4th' for 4", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+});
+
+// Case 5: Identify the ordinal number for 11
+// When the number is 11,
+// Then the function should return "11th"
+
+test("should return '11th' for 11", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+});
+
+// Case 6: Identify the ordinal number for 12
+// When the number is 12,
+// Then the function should return "12th"
+
+test("should return '12th' for 12", () => {
+  expect(getOrdinalNumber(12)).toEqual("12th");
+});
+
+// Case 7: Identify the ordinal number for 13
+// When the number is 13,
+// Then the function should return "13th"
+
+test("should return '13th' for 13", () => {
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});
+
+// Case 8: Identify the ordinal number for 21
+// When the number is 21,
+// Then the function should return "21st"
+
+test("should return '21st' for 21", () => {
+  expect(getOrdinalNumber(21)).toEqual("21st");
+});
+
+// Case 9: Identify the ordinal number for 22
+// When the number is 22,
+// Then the function should return "22nd"
+
+test("should return '22nd' for 22", () => {
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+});
+
+// Case 10: Identify the ordinal number for 23
+// When the number is 23,
+// Then the function should return "23rd"
+
+test("should return '23rd' for 23", () => {
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+});
+
+// Case 11: Identify the ordinal number for 101
+// When the number is 101,
+// Then the function should return "101st"
+
+test("should return '101st' for 101", () => {
+  expect(getOrdinalNumber(101)).toEqual("101st");
+});
+
+// Case 12: Identify the ordinal number for 111
+// When the number is 111,
+// Then the function should return "111th"
+
+test("should return '111th' for 111", () => {
+  expect(getOrdinalNumber(111)).toEqual("111th");
+});
+
+// Case 13: Identify the ordinal number for 0
+// When the number is 0,
+// Then the function should return "0th"
+
+test("should return '0th' for 0", () => {
+  expect(getOrdinalNumber(0)).toEqual("0th");
+});
+

Sprint-3/2-practice-tdd/repeat.js

@@ -1,5 +1,20 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(str, count) {
+  // Handle edge cases
+  if (count < 0) {
+    throw new Error("Count cannot be negative");
+  }
+
+  if (count === 0) {
+    return "";
+  }
+
+  // Build the repeated string
+  let result = "";
+  for (let i = 0; i < count; i++) {
+    result += str;
+  }
+
+  return result;
 }
 
 module.exports = repeat;