Manchester | 26-ITP-May | Monsur Abdulrahman | Sprint 3 | Coursework/sprint 3 | Practice TDD

Sprint-1/2-mandatory-errors/4.js

@@ -1,2 +1,2 @@
-const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
+const 12HourClockTime = "8:53pm";
+const 24hourClockTime = "20:53";

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

@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
- return 5
+ let count = 0;
+ for (let i = 0; i < stringOfCharacters.length; i++) {
+ if (stringOfCharacters[i] === findCharacter) {
+ count++;
+ }
+ }
+ return count;
 }
 
 module.exports = countChar;

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

@@ -11,13 +11,32 @@ const countChar = require("./count");
 // Then it should correctly count occurrences of `char`.
 
 test("should count multiple occurrences of a character", () => {
- const str = "aaaaa";
- const char = "a";
+ const str = "hello world";
+ const char = "l";
  const count = countChar(str, char);
- expect(count).toEqual(5);
+ expect(count).toEqual(3);
 });
 
+
+// Scenario: Single Occurrence
+
+test("should count a single occurrence of a character", () => {
+ const str = "hello world";
+ const char = "h";
+ const count = countChar(str, char);
+ expect(count).toEqual(1);
+});
+
+
 // Scenario: No Occurrences
+
+test("should return 0 when the character does not occur in the string", () => {
+ const str = "hello world";
+ const char = "z";
+ const count = countChar(str, char);
+ expect(count).toEqual(0);
+});
+
 // Given the input string `str`,
 // And a character `char` that does not exist within `str`.
 // When the function is called with these inputs,

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

@@ -1,5 +1,22 @@
 function getOrdinalNumber(num) {
- return "1st";
+
+ const lastDigit = num % 10;
+ const lastTwoDigits = num % 100;
+
+ 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`;
+ } 
 }
 
 module.exports = getOrdinalNumber;

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

@@ -18,3 +18,47 @@ 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 with 2 (but not 12)
+test("should append 'nd' for numbers ending with 2, except those ending with 12", () => {
+ expect(getOrdinalNumber(2)).toEqual("2nd");
+ expect(getOrdinalNumber(22)).toEqual("22nd");
+ expect(getOrdinalNumber(132)).toEqual("132nd");
+});
+
+// Case 3: Numbers ending with 3 (but not 13)
+test("should append 'rd' for numbers ending with 3, except those ending with 13", () => {
+ expect(getOrdinalNumber(3)).toEqual("3rd");
+ expect(getOrdinalNumber(23)).toEqual("23rd");
+ expect(getOrdinalNumber(133)).toEqual("133rd");
+});
+
+// Case 4: Numbers ending with 11, 12, or 13
+test("should append 'th' for numbers ending with 11, 12, or 13", () => {
+ expect(getOrdinalNumber(11)).toEqual("11th");
+ expect(getOrdinalNumber(12)).toEqual("12th");
+ expect(getOrdinalNumber(13)).toEqual("13th");
+ expect(getOrdinalNumber(111)).toEqual("111th");
+ expect(getOrdinalNumber(112)).toEqual("112th");
+ expect(getOrdinalNumber(113)).toEqual("113th");
+});
+
+// Case 5: All other numbers
+test("should append 'th' for all other numbers", () => {
+ expect(getOrdinalNumber(4)).toEqual("4th");
+ expect(getOrdinalNumber(5)).toEqual("5th");
+ expect(getOrdinalNumber(6)).toEqual("6th");
+ expect(getOrdinalNumber(7)).toEqual("7th");
+ expect(getOrdinalNumber(8)).toEqual("8th");
+ expect(getOrdinalNumber(9)).toEqual("9th");
+ expect(getOrdinalNumber(10)).toEqual("10th");
+ expect(getOrdinalNumber(14)).toEqual("14th");
+ expect(getOrdinalNumber(15)).toEqual("15th");
+ expect(getOrdinalNumber(16)).toEqual("16th");
+ expect(getOrdinalNumber(17)).toEqual("17th");
+ expect(getOrdinalNumber(18)).toEqual("18th");
+ expect(getOrdinalNumber(19)).toEqual("19th");
+ expect(getOrdinalNumber(20)).toEqual("20th");
+});
+
+

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

@@ -1,7 +1,11 @@
 function repeatStr() {
+
  // Your implementation of this function must *not* call String.prototype.repeat (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat).
  // The goal is to re-implement that function, not to use it.
- return "hellohellohello";
+ if (count < 0) {
+ throw new Error("Count must be a non-negative integer");
+ }
+ return str.repeat(count);
 }
 
 module.exports = repeatStr;

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

@@ -21,12 +21,32 @@ 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 return the original string when count is 1", () => {
+ 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 return an empty string when count is 0", () => {
+ 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 throw an error for negative count", () => {
+ const str = "hello";
+ const count = -2;
+ expect(() => repeatStr(str, count)).toThrow("Count must be a non-negative integer");
+}); 

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 = {};