Sheffield | 26-ITP-Jan | Martha Ogunbiyi | Sprint 3 | coursework/sprint-3-practice-tdd

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

@@ -15,7 +15,19 @@
 // execute the code to ensure all tests pass.
 
 function getAngleType(angle) {
-  // TODO: Implement this function
+  if (angle <= 0 || angle >= 360) {
+    return "Invalid angle";
+  } else if (angle === 90) {
+    return "Right angle";
+  } else if (angle === 180) {
+    return "Straight angle";
+  } else if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  } else if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  } else if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  }
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -31,7 +43,30 @@ function assertEquals(actualOutput, targetOutput) {
   );
 }
 
-// TODO: Write tests to cover all cases, including boundary and invalid cases.
-// Example: Identify Right Angles
-const right = getAngleType(90);
-assertEquals(right, "Right angle");
+// Invalid angles
+assertEquals(getAngleType(0), "Invalid angle");
+assertEquals(getAngleType(-10), "Invalid angle");
+assertEquals(getAngleType(360), "Invalid angle");
+
+// Acute angles and its boundaries
+assertEquals(getAngleType(1), "Acute angle");
+assertEquals(getAngleType(45), "Acute angle");
+assertEquals(getAngleType(89), "Acute angle");
+
+// Right angle
+assertEquals(getAngleType(90), "Right angle");
+
+// Obtuse angles and its boundaries
+assertEquals(getAngleType(91), "Obtuse angle");
+assertEquals(getAngleType(120), "Obtuse angle");
+assertEquals(getAngleType(179), "Obtuse angle");
+
+// Straight angle
+assertEquals(getAngleType(180), "Straight angle");
+
+// Reflex angles and its boundaries
+assertEquals(getAngleType(181), "Reflex angle");
+assertEquals(getAngleType(200), "Reflex angle");
+assertEquals(getAngleType(359), "Reflex angle");
+
+

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

@@ -11,7 +11,8 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  const properFraction = numerator / denominator;
+  return properFraction > 0 && properFraction < 1;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -26,8 +27,27 @@ function assertEquals(actualOutput, targetOutput) {
   );
 }
 
-// TODO: Write tests to cover all cases.
-// What combinations of numerators and denominators should you test?
 
-// Example: 1/2 is a proper fraction
+// TEST CASES
+// Normal Scenarios
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(5, 10), true);
+
+// Boundary Values
+assertEquals(isProperFraction(0, 5), false);
+assertEquals(isProperFraction(1, 1), false);
+
+// Improper Fraction
+assertEquals(isProperFraction(8, 3), false)
+
+// Negative Values
+assertEquals(isProperFraction(-3, 8), false);
+assertEquals(isProperFraction(-8, -3), false);
+assertEquals(isProperFraction(-3, -8), true);
+
+//Very Small
+assertEquals(isProperFraction(0.0001, 999999), true);
+
+//Very Large
+assertEquals(isProperFraction(999999, 0.0001), false);
+

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

@@ -22,10 +22,48 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  const rankList = [
+    "A",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+  ];
+  const suitList = ["♠", "♥", "♦", "♣"];
+
+  const faceCard = rankList.slice(-3);
+
+  const cardRank = card.slice(0, -1);
+  const cardSuit = card.charAt(card.length - 1);
+
+  const validCard = rankList.includes(cardRank) && suitList.includes(cardSuit);
+
+  if (!validCard) {
+    throw new Error("Invalid card");
+  }
+
+  if (cardRank === "A") {
+    return 11;
+  }
+
+  if (faceCard.includes(cardRank)) {
+    return 10;
+  }
+
+  return Number(cardRank);
 }
 
-// The line below allows us to load the getCardValue function into tests in other files.
+console.log(getCardValue("J♥"));
+
+// The line below allows us to load the getCard Value function into tests in other files.
 // This will be useful in the "rewrite tests with jest" step.
 module.exports = getCardValue;
 
@@ -37,9 +75,11 @@ function assertEquals(actualOutput, targetOutput) {
   );
 }
 
-// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
+
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("A♥"), 11);
+assertEquals(getCardValue("K♦"), 10);
+assertEquals(getCardValue("10♣"), 10);
 
 // Handling invalid cards
 try {
@@ -49,4 +89,19 @@ try {
   console.error("Error was not thrown for invalid card");
 } catch (e) {}
 
+
 // What other invalid card cases can you think of?
+try {
+  getCardValue("♠9");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("1♠");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("♠");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}

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

@@ -2,7 +2,7 @@
 // We will use the same function, but write tests for it using Jest in this file.
 const getAngleType = require("../implement/1-get-angle-type");
 
-// TODO: Write tests in Jest syntax to cover all cases/outcomes,
+//Write tests in Jest syntax to cover all cases/outcomes,
 // including boundary and invalid cases.
 
 // Case 1: Acute angles
@@ -14,7 +14,33 @@ 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 (angle > 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 === 180)', () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+
+});
+
 // Case 5: Reflex angles
+test('should return "Reflex angle" when (angle > 180 && angle < 360)', () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(200)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
+
 // Case 6: Invalid angles
+test('should return "Invalid angle" when (angle <= 0 || angle >= 360)', () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(-10)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+});

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

@@ -2,9 +2,35 @@
 // We will use the same function, but write tests for it using Jest in this file.
 const isProperFraction = require("../implement/2-is-proper-fraction");
 
-// TODO: Write tests in Jest syntax to cover all combinations of positives, negatives, zeros, and other categories.
+// Write tests in Jest syntax to cover all combinations of positives, negatives, zeros, and other categories.
 
 // Special case: numerator is zero
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+// Normal case: 
+test(`should return true in normal scenario`, () => {
+  expect(isProperFraction(5, 10)).toEqual(true);
+});
+// Boundary Value
+test(`should return false when numerator is 0`, () => {
+  expect(isProperFraction(0, 5)).toEqual(false);
+});
+// Improper Fraction
+test(`should return false when numerator is greater than denominator`, () => {
+  expect(isProperFraction(8, 3)).toEqual(false);
+});
+// Negative Value
+test(`should return false when numerator is negative`, () => {
+  expect(isProperFraction(-3, 8)).toEqual(false);
+
+});
+// Very Small
+test(`should return true with very small values`, () => {
+  expect(isProperFraction(0.0001, 999999)).toEqual(true);
+});
+// very large
+test(`should return false with very large`, () => {
+  expect(isProperFraction(999999, 0.0001)).toEqual(false);
+});

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

@@ -2,7 +2,7 @@
 // We will use the same function, but write tests for it using Jest in this file.
 const getCardValue = require("../implement/3-get-card-value");
 
-// TODO: Write tests in Jest syntax to cover all possible outcomes.
+// Write tests in Jest syntax to cover all possible outcomes.
 
 // Case 1: Ace (A)
 test(`Should return 11 when given an ace card`, () => {
@@ -11,8 +11,24 @@ test(`Should return 11 when given an ace card`, () => {
 
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
+test(`Should return should return its numeric value`, () => {
+  expect(getCardValue("9♠")).toEqual(9);
+});
 //   Face Cards (J, Q, K)
+test(`Should return 10`, () => {
+  expect(getCardValue("K♠")).toEqual(10);
+});
 //   Invalid Cards
+test(`Should throw an error`, () => {
+  expect(() => {
+    getCardValue("♠9");
+  }).toThrow();
+});
+test(`Should throw an error`, () => {
+  expect(() => {
+    getCardValue("♠");
+  }).toThrow();
+});
 
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation:

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

@@ -1,5 +1,15 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+  const str = stringOfCharacters.length;
+
+  for (let i = 0; i < str; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count += 1;
+      console.log(stringOfCharacters[i]);
+    }
+  }
+  return count;
 }
+console.log(countChar("little", "t"));
 
 module.exports = countChar;

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

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

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

@@ -1,5 +1,23 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const lastTwoDigits = num % 100;
+  const lastDigit = num % 10;
+
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 13) {
+    return `${num}${"th"}`;
+  }
+
+  switch (lastDigit) {
+    case 1:
+      return `${num}${"st"}`;
+    case 2:
+      return `${num}${"nd"}`;
+    case 3:
+      return `${num}${"rd"}`;
+    default:
+      return `${num}${"th"}`;
+  }
 }
 
+console.log(getOrdinalNumber(3));
+
 module.exports = getOrdinalNumber;

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

@@ -18,3 +18,29 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+// Case 2: Numbers ending in 2 → add nd → (2nd, 22nd, 42nd)
+test("should append 'nd' for numbers ending with 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(142)).toEqual("142nd");
+});
+// Case 3: Numbers ending in 3 → add rd → (3rd, 23rd, 53rd)
+test("should append '3rd' for numbers ending with 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(153)).toEqual("153rd");
+});
+// Case 4: All other numbers → add th → (4th, 6th, 20th, 100th)
+test("should append 'th' for numbers ending with 4", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+});
+// Exceptions: Numbers ending in 11, 12, and 13 use -th (e.g., 11th, 12th, 13th). 
+test("should append 'th' for numbers ending with 11, 12 and 13", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(113)).toEqual("113th");
+});
+

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

@@ -1,5 +1,8 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if(count < 0){
+    throw new Error("negative counts are not valid");
+  }
+  return str.repeat(count);
 }
 
 module.exports = repeatStr;