Manchester | 26-ITP-Jan | Liban Jama | Sprint 3 | Structuring and Testing Data

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

@@ -16,6 +16,32 @@
 
 function getAngleType(angle) {
   // TODO: Implement this function
+  // if angle is between 0 and 90 then return acute angle
+  if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  }
+
+  // if it is exactly 90 return right angle
+  else if (angle === 90) {
+    return "Right angle";
+  }
+  // greater than 90 less than 180 return obtuse angle
+  else if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  }
+  // if exactly 180 return straight angle
+  else if (angle === 180) {
+    return "Straight angle";
+  }
+  // greater than 180 less than 360 return reflex angle
+  else if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  }
+  // everything greater than 360 return invalid angle
+  else {
+    return "Invalid angle";
+  }
+  // return a string tells user which angle
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.

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

@@ -12,6 +12,8 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if (denominator === 0) return false;
+  return Math.abs(numerator) < Math.abs(denominator);
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.

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

@@ -23,6 +23,23 @@
 
 function getCardValue(card) {
   // TODO: Implement this function
+
+  // if card is an ace return 11
+  if (card === "A") {
+    return 11;
+  }
+
+  // if card is face "J", "Q", "K"
+  else if (card === "J" || card === "Q" || card === "K") {
+    return 10;
+  }
+
+  // if card is a number card and card is bigger than 2 and less than 10 ("2" to "10"), should return its numerical value
+  else if (Number(card) >= 2 && Number(card) <= 10) {
+    return Number(card);
+  } else {
+    throw new Error("Error invalid card");
+  }
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -39,7 +56,7 @@ function assertEquals(actualOutput, targetOutput) {
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 // Examples:
-assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("9"), 9);
 
 // Handling invalid cards
 try {

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

@@ -14,7 +14,31 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test(`should return "Right angle" when (angle === 90)`, () => {
+  // Test various right angles, including boundary cases
+  expect(getAngleType(90)).toEqual("Right angle");
+});
 // Case 3: Obtuse angles
+test(`should return "Obtuse angles" when (angle > 90 && < 180)`, () => {
+  // Test various obtuse angles, including boundary cases
+  expect(getAngleType(96)).toEqual("Obtuse angle");
+  expect(getAngleType(142)).toEqual("Obtuse angle");
+  expect(getAngleType(178)).toEqual("Obtuse angle");
+});
 // Case 4: Straight angle
+test(`should return "Straight angle" when (angle === 180)`, () => {
+  // Test various straight angles, including boundary cases
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 // Case 5: Reflex angles
+test(`should return "Reflex angles" when (angle > 180 && < 360)`, () => {
+  // Test various reflex angles, including boundary cases
+  expect(getAngleType(199)).toEqual("Reflex angle");
+  expect(getAngleType(245)).toEqual("Reflex angle");
+  expect(getAngleType(306)).toEqual("Reflex angle");
+});
 // Case 6: Invalid angles
+test(`should return "Invalid angles" when (angle > 180 && < 360)`, () => {
+  // Test various invalid angles, including boundary cases
+  expect(getAngleType(360)).toEqual("Invalid angle");
+});

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

@@ -8,3 +8,18 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+test(`for positive`, () => {
+  expect(isProperFraction(6, 7)).toEqual(true);
+  expect(isProperFraction(2, 4)).toEqual(true);
+});
+
+test(`should return false for improper fractions`, () => {
+  expect(isProperFraction(8, 6)).toEqual(false);
+  expect(isProperFraction(4, 2)).toEqual(false);
+});
+
+test(`negative combinations`, () => {
+  expect(isProperFraction(-5, 9)).toEqual(true);
+  expect(isProperFraction(-2, 0)).toEqual(false);
+});

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

@@ -6,15 +6,35 @@ const getCardValue = require("../implement/3-get-card-value");
 
 // Case 1: Ace (A)
 test(`Should return 11 when given an ace card`, () => {
-  expect(getCardValue("A♠")).toEqual(11);
+  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
 
+// Case 2: Face (J, Q, K)
+test(`Should return 10 when given an face card`, () => {
+  expect(getCardValue("J")).toEqual(10);
+});
+
+test(`Should return 10 when given an face card`, () => {
+  expect(getCardValue("Q")).toEqual(10);
+});
+
+test(`Should return 10 when given an face card`, () => {
+  expect(getCardValue("K")).toEqual(10);
+});
+// Case 3: Number Cards (2-10)
+test(`Should return numerical value when given an number card`, () => {
+  expect(getCardValue("5")).toEqual(5);
+});
+
+test(`Should return error if the card string is invalid`, () => {
+  expect(() => getCardValue("17")).toThrow("Error invalid card");
+});
+
 // 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
-

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

@@ -1,5 +1,22 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  // trying to find the amount of times the findCharacter is found in the stringOfCharacters
+  const lengthOfString = stringOfCharacters.length;
+  console.log("lengthOfString", lengthOfString);
+
+  // replace all instances of findCharacter in string of characters with an empty string, and then get the length. (e.g. in house replace the e with an empty string " ").
+  const otherLettersLength = stringOfCharacters.replaceAll(
+    findCharacter,
+    ""
+  ).length;
+
+  // declaring the variable called result and subtract otherLettersLength from the lengthOfString to find the number of occurences of findCharacter.
+  const result = lengthOfString - otherLettersLength;
+  console.log("result", result);
+  return result;
 }
 
 module.exports = countChar;
+
+// function countOccurrences(str, char) {
+//   return str.length - str.replaceAll(char, "").length;
+// }

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

@@ -17,8 +17,30 @@ test("should count multiple occurrences of a character", () => {
   expect(count).toEqual(5);
 });
 
+test("should count multiple occurrences of a character", () => {
+  const str = "house";
+  const char = "e";
+  const count = countChar(str, char);
+  expect(count).toEqual(1);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "playful";
+  const char = "l";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
+
 // Scenario: No Occurrences
 // Given the input string `str`,
 // 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(``);
+test("should return when there are no occurrences of a character", () => {
+  const str = "spaceship";
+  const char = "x";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,18 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const lastdigit = num % 10;
+  if (lastdigit === 1) {
+    return `${num}st`;
+  }
+
+  if (lastdigit === 2) {
+    return `${num}nd`;
+  }
+
+  if (lastdigit === 3) {
+    return `${num}rd`;
+  } else {
+    return `${num}th`;
+  }
 }
 
 module.exports = getOrdinalNumber;

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

@@ -18,3 +18,15 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+test("should append 'nd' for numbers ending with 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(132)).toEqual("132nd");
+});
+
+test("should append 'rd' for numbers ending with 3, except those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(133)).toEqual("133rd");
+});

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("invalid count");
+  }
+  return str.repeat(count);
 }
-
+// call the repeat function on the string and pass in count.
 module.exports = repeatStr;

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

@@ -21,12 +21,33 @@ test("should repeat the string count times", () => {
 // When the repeatStr function is called with these inputs,
 // Then it should return the original `str` without repetition.
 
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
+
 // Case: Handle count of 0:
 // Given a target string `str` and a `count` equal to 0,
 // When the repeatStr function is called with these inputs,
 // Then it should return an empty string.
 
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("");
+});
+
 // Case: Handle negative count:
 // Given a target string `str` and a negative integer `count`,
 // When the repeatStr function is called with these inputs,
 // Then it should throw an error, as negative counts are not valid.
+
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = -2;
+  // const repeatedStr = repeatStr(str, count);
+  expect(() => repeatStr(str, count)).toThrow("invalid count");
+});

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

@@ -2,13 +2,8 @@
 // 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));
-}
-
 function countAndCapitalisePets(petsArr) {
   const petCount = {};