BIrmingham | 25-ITP-Sept | Khor Biel | Sprint 3 | coursework/sprint-3

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

@@ -50,14 +50,16 @@ 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(270);
+assertEquals(reflex, "Reflex angle");

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

@@ -46,14 +46,31 @@ 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?
+
+
+// // Stretch Scenarios:
+
+// Stretch 1: Zero in numerator
+// 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). Any fraction with zero numerator is proper (except when denominator is also zero).
+const zeroNumerator = isProperFraction(0, 5);
+assertEquals(zeroNumerator, true);
+
+// Stretch 2: Negative denominator
+// Input: numerator = 2, denominator = -5
+// target output: false
+// Explanation: The fraction 2/-5 equals -0.4, but when comparing 2 < -5, this is false. The function compares the actual values, not absolute values.
+const negativeDenominator = isProperFraction(2, -5);
+assertEquals(negativeDenominator, false);

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

@@ -8,9 +8,23 @@
 // 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) {
+  // Handle "10" case first since it has two characters
+  if (card.startsWith("10")) {
+    return 10;
+  }
+
+  const rank = card[0]; // Extract the rank from the card string
   if (rank === "A") {
     return 11;
   }
+  if (rank >= "2" && rank <= "9") {
+    return parseInt(rank);
+  }
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+
+  throw new Error("Invalid card rank.");
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -26,6 +40,7 @@ function assertEquals(actualOutput, targetOutput) {
     `Expected ${actualOutput} to equal ${targetOutput}`
   );
 }
+
 // Acceptance criteria:
 
 // Given a card string in the format "A♠" (representing a card in blackjack - the last character will always be an emoji for a suit, and all characters before will be a number 2-10, or one letter of J, Q, K, A),
@@ -39,19 +54,38 @@ 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 jackOfDiamonds = getCardValue("J♦");
+assertEquals(jackOfDiamonds, 10);
+
+const queenOfHearts = getCardValue("Q♥");
+assertEquals(queenOfHearts, 10);
+
+const kingOfClubs = getCardValue("K♣");
+assertEquals(kingOfClubs, 10);
+
+const tenOfClubs = getCardValue("10♣");
+assertEquals(tenOfClubs, 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 aceOfDiamonds = getCardValue("A♦");
+assertEquals(aceOfDiamonds, 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("X♠");
+  console.assert(false, "Expected an error for invalid card");
+} catch (error) {
+  console.assert(error.message === "Invalid card rank.", "Expected invalid card rank error");
+}

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

@@ -1,26 +1,41 @@
 // This statement loads the getAngleType function you wrote in the implement directory.
 // We will use the same function, but write tests for it using Jest in this file.
-const getAngleType = require("../implement/1-get-angle-type");
+const getAngleType = require('../implement/1-get-angle-type');
 
-test("should identify right angle (90°)", () => {
+test("should identify right angle (90)", () => {
   expect(getAngleType(90)).toEqual("Right angle");
 });
 
-// REPLACE the comments with the tests
-// make your test descriptions as clear and readable as possible
-
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
+test("should identify acute angles (less than 90 degrees)", () => {
+  expect(getAngleType(45)).toEqual("Acute angle");
+  expect(getAngleType(30)).toEqual("Acute angle");
+  expect(getAngleType(89)).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 angles (between 90 and 180 degrees)", () => {
+  expect(getAngleType(120)).toEqual("Obtuse angle");
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).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 degrees)", () => {
+  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 angles (between 180 and 360 degrees)", () => {
+  expect(getAngleType(200)).toEqual("Reflex angle");
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});

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

@@ -7,7 +7,20 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
+test("should return false for improper fractions", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+  expect(isProperFraction(10, 5)).toEqual(false);
+});
 
 // Case 3: Identify Negative Fractions:
+test("should handle negative fractions correctly", () => {
+  expect(isProperFraction(-4, 7)).toEqual(true);
+  expect(isProperFraction(2, -5)).toEqual(false);
+  expect(isProperFraction(-2, -5)).toEqual(false);
+});
 
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false when numerator equals denominator", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+  expect(isProperFraction(7, 7)).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 (2-9)", () => {
+  expect(getCardValue('5♥')).toEqual(5);
+  expect(getCardValue('2♦')).toEqual(2);
+  expect(getCardValue('9♣')).toEqual(9);
+});
+
 // Case 3: Handle Face Cards (J, Q, K):
+test("should return 10 for face cards (J, Q, K)", () => {
+  expect(getCardValue('J♦')).toEqual(10);
+  expect(getCardValue('Q♥')).toEqual(10);
+  expect(getCardValue('K♣')).toEqual(10);
+});
+
 // Case 4: Handle Ace (A):
+test("should return 11 for all Aces", () => {
+  expect(getCardValue('A♦')).toEqual(11);
+  expect(getCardValue('A♥')).toEqual(11);
+  expect(getCardValue('A♣')).toEqual(11);
+});
+
 // Case 5: Handle Invalid Cards:
+test("should throw error for invalid card ranks", () => {
+  expect(() => getCardValue('X♠')).toThrow('Invalid card rank.');
+  expect(() => getCardValue('1♥')).toThrow('Invalid card rank.');
+});

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

@@ -1,24 +1,66 @@
 // implement a function countChar that counts the number of times a character occurs in a string
-const countChar = require("./count");
+const countChar = require('./count');
+
 // Given a string str and a single character char to search for,
 // When the countChar function is called with these inputs,
 // Then it should:
 
-// Scenario: Multiple Occurrences
+// Scenario: Multiple occurrences
 // Given the input string str,
 // And a character char that may occur multiple times with overlaps within str (e.g., 'a' in 'aaaaa'),
 // When the function is called with these inputs,
 // Then it should correctly count overlapping occurrences of char (e.g., 'a' appears five times in 'aaaaa').
-
 test("should count multiple occurrences of a character", () => {
   const str = "aaaaa";
   const char = "a";
   const count = countChar(str, char);
   expect(count).toEqual(5);
 });
 
-// Scenario: No Occurrences
+// Scenario: No occurrences
 // Given the input string str,
 // 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 is not found", () => {
+  const str = "hello world";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Case sensitivity
+// Given the input string str with mixed case,
+// And a character char with specific case,
+// When the function is called with these inputs,
+// Then it should only count occurrences that match the case exactly.
+test("should be case sensitive when counting characters", () => {
+  const str = "Hello World";
+  const char = "h";
+  const count = countChar(str, char);
+  expect(count).toEqual(0); // 'h' is not the same as 'H'
+});
+
+// Scenario: Single occurrence
+// Given the input string str,
+// And a character char that appears exactly once,
+// When the function is called with these inputs,
+// Then it should return 1.
+test("should count single occurrence correctly", () => {
+  const str = "hello";
+  const char = "e";
+  const count = countChar(str, char);
+  expect(count).toEqual(1);
+});
+
+// Scenario: Empty string
+// Given an empty input string str,
+// And any character char,
+// When the function is called with these inputs,
+// Then it should return 0.
+test("should return 0 for empty string", () => {
+  const str = "";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,13 +1,74 @@
-const getOrdinalNumber = require("./get-ordinal-number");
-// In this week's prep, we started implementing getOrdinalNumber
+const getOrdinalNumber = require('./get-ordinal-number');
 
+// In this week's prep, we started implementing getOrdinalNumber
 // continue testing and implementing getOrdinalNumber for additional cases
 // Write your tests using Jest - remember to run your tests often for continual feedback
 
 // Case 1: Identify the ordinal number for 1
 // When the number is 1,
 // Then the function should return "1st"
-
 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 numbers ending with 1 (except 11)
+// When the number ends with 1 but is not 11,
+// Then the function should return "[number]st"
+test("should return correct ordinal for numbers ending with 1 (except 11)", () => {
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(31)).toEqual("31st");
+  expect(getOrdinalNumber(41)).toEqual("41st");
+});
+
+// Case 5: Identify the ordinal number for numbers ending with 2 (except 12)
+// When the number ends with 2 but is not 12,
+// Then the function should return "[number]nd"
+test("should return correct ordinal for numbers ending with 2 (except 12)", () => {
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(32)).toEqual("32nd");
+  expect(getOrdinalNumber(42)).toEqual("42nd");
+});
+
+// Case 6: Identify the ordinal number for numbers ending with 3 (except 13)
+// When the number ends with 3 but is not 13,
+// Then the function should return "[number]rd"
+test("should return correct ordinal for numbers ending with 3 (except 13)", () => {
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(43)).toEqual("43rd");
+});
+
+// Case 7: Identify the ordinal number for numbers ending with 11, 12, 13
+// When the number is 11, 12, or 13,
+// Then the function should return "[number]th"
+test("should return 'th' for numbers 11, 12, 13", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});
+
+// Case 8: Identify the ordinal number for other numbers
+// When the number doesn't end with 1, 2, or 3 (or is 11, 12, 13),
+// Then the function should return "[number]th"
+test("should return 'th' for other numbers", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(5)).toEqual("5th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(15)).toEqual("15th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+});