Complete Sprint 3 mandatory exercises

Author: codebyra

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

@@ -15,7 +15,27 @@
 // execute the code to ensure all tests pass.
 
 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";
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -31,7 +51,22 @@ 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");
+// Acute angle
+assertEquals(getAngleType(45), "Acute angle");
+
+// Right angle
+assertEquals(getAngleType(90), "Right angle");
+
+// Obtuse angle
+assertEquals(getAngleType(120), "Obtuse angle");
+
+// Straight angle
+assertEquals(getAngleType(180), "Straight angle");
+
+// Reflex angle
+assertEquals(getAngleType(270), "Reflex angle");
+
+// Invalid angles
+assertEquals(getAngleType(0), "Invalid angle");
+assertEquals(getAngleType(360), "Invalid angle");
+assertEquals(getAngleType(-10), "Invalid angle");

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

@@ -11,7 +11,7 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return numerator >= 0 && denominator > 0 && numerator < denominator;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -29,5 +29,12 @@ 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
+// Proper fractions
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 4), true);
+
+// Not proper fractions
+assertEquals(isProperFraction(2, 2), false);
+assertEquals(isProperFraction(5, 2), false);
+assertEquals(isProperFraction(-1, 2), false);
+assertEquals(isProperFraction(1, 0), false);

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

@@ -22,7 +22,26 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  const rank = card.slice(0, -1);
+  const suit = card.slice(-1);
+
+  if (!["♠", "♥", "♦", "♣"].includes(suit)) {
+    throw new Error("Invalid card");
+  }
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+
+  if (["2", "3", "4", "5", "6", "7", "8", "9", "10"].includes(rank)) {
+    return Number(rank);
+  }
+
+  throw new Error("Invalid card");
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -37,18 +56,36 @@ function assertEquals(actualOutput, targetOutput) {
   );
 }
 
-// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
+// Number cards
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("10♥"), 10);
+
+// Ace
+assertEquals(getCardValue("A♣"), 11);
 
-// Handling invalid cards
+// Face cards
+assertEquals(getCardValue("J♦"), 10);
+assertEquals(getCardValue("Q♥"), 10);
+assertEquals(getCardValue("K♠"), 10);
+
+// Invalid cards
 try {
   getCardValue("invalid");
-
-  // This line will not be reached if an error is thrown as expected
   console.error("Error was not thrown for invalid card 😢");
 } catch (e) {
   console.log("Error thrown for invalid card 🎉");
 }
 
-// What other invalid card cases can you think of?
+try {
+  getCardValue("1♠");
+  console.error("Error was not thrown for invalid rank 😢");
+} catch (e) {
+  console.log("Error thrown for invalid rank 🎉");
+}
+
+try {
+  getCardValue("AX");
+  console.error("Error was not thrown for invalid suit 😢");
+} catch (e) {
+  console.log("Error thrown for invalid suit 🎉");
+}

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

@@ -14,7 +14,32 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test("should return 'Right angle' when angle is 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(120)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+
 // Case 4: Straight angle
+test("should return 'Straight angle' when angle is 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' for invalid values", () => {
+  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/3-get-card-value.test.js

@@ -9,12 +9,23 @@ test(`Should return 11 when given an ace card`, () => {
   expect(getCardValue("A♠")).toEqual(11);
 });
 
-// Suggestion: Group the remaining test data into these categories:
-//   Number Cards (2-10)
-//   Face Cards (J, Q, K)
-//   Invalid Cards
+// Number Cards
+test("Should return the value of number cards", () => {
+  expect(getCardValue("2♥")).toEqual(2);
+  expect(getCardValue("9♣")).toEqual(9);
+  expect(getCardValue("10♦")).toEqual(10);
+});
 
-// To learn how to test whether a function throws an error as expected in Jest,
-// please refer to the Jest documentation:
-// https://jestjs.io/docs/expect#tothrowerror
+// Face Cards
+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 for invalid cards", () => {
+  expect(() => getCardValue("1♠")).toThrow();
+  expect(() => getCardValue("invalid")).toThrow();
+  expect(() => getCardValue("AX")).toThrow();
+});

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

@@ -1,5 +1,5 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  return `${num}st`;
 }
 
 module.exports = getOrdinalNumber;

Sprint-3/3-dead-code/exercise-1.js

@@ -5,9 +5,7 @@ let testName = "Jerry";
 const greeting = "hello";
 
 function sayHello(greeting, name) {
-  const greetingStr = greeting + ", " + name + "!";
   return `${greeting}, ${name}!`;
-  console.log(greetingStr);
 }
 
 testName = "Aman";

Sprint-3/3-dead-code/exercise-2.js

@@ -2,27 +2,25 @@
 // The countAndCapitalisePets function should continue to work for any reasonable input it's given, and you shouldn't modify the pets variable.
 
 const pets = ["parrot", "hamster", "horse", "dog", "hamster", "cat", "hamster"];
-const capitalisedPets = pets.map((pet) => pet.toUpperCase());
-const petsStartingWithH = pets.filter((pet) => pet[0] === "h");
 
-function logPets(petsArr) {
-  petsArr.forEach((pet) => console.log(pet));
-}
+const petsStartingWithH = pets.filter((pet) => pet[0] === "h");
 
 function countAndCapitalisePets(petsArr) {
   const petCount = {};
 
   petsArr.forEach((pet) => {
     const capitalisedPet = pet.toUpperCase();
+
     if (petCount[capitalisedPet]) {
       petCount[capitalisedPet] += 1;
     } else {
       petCount[capitalisedPet] = 1;
     }
   });
+
   return petCount;
 }
 
 const countedPetsStartingWithH = countAndCapitalisePets(petsStartingWithH);
 
-console.log(countedPetsStartingWithH); // { 'HAMSTER': 3, 'HORSE': 1 } <- Final console log
+console.log(countedPetsStartingWithH); // { HAMSTER: 3, HORSE: 1 }