Sheffield | 26-ITP-Jan | Seti Mussa | Sprint 3 | Coursework pratice tdd

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

@@ -1,5 +1,13 @@
 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

@@ -22,3 +22,9 @@ 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("should return 0 when character is not found ", () => {
+  const str = "helo world";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,17 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const lastTwoDigits =num % 100;
+
+  // Special cases for 11, 12, and 13
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 13) {
+    return num + "th";
+
+  }
+  const lastDigit = num % 10;
+  if (lastDigit === 1) return num + "st";
+  if (lastDigit ===2) return num + "nd";
+  if (lastDigit ===3) return num + "rd";
+  return num + "th";
+
 }
 
 module.exports = getOrdinalNumber;

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

@@ -16,5 +16,33 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should append 'st' for numbers ending with 1, except those ending with 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
   expect(getOrdinalNumber(21)).toEqual("21st");
-  expect(getOrdinalNumber(131)).toEqual("131st");
+  expect(getOrdinalNumber(41)).toEqual("41st");
+});
+
+// Case 2: Numbers ending with 2 (but not 12)
+test("should append 'nd' for number ending with 2  except those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(42)).toEqual("42nd");
+});
+
+// Case 3: Numbers ending with 3 (but not 13)
+test("should append 'rd' for number anding with 3 expect those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(43)).toEqual("43rd");
+});
+
+// Case 4: Number ending with 4  (but not 14)
+test("should append 'th' for number ending with 4 expcet those ending with 14", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(44)).toEqual("44th");
+  expect(getOrdinalNumber(54)).toEqual("54th");
+});
+
+// Case 5: Number ending with 5 (but not 15)
+test("should append 'th' for number ending with 5 except those ending with 15", () => {
+  expect(getOrdinalNumber(5)).toEqual("5th");
+  expect(getOrdinalNumber(55)).toEqual("55th");
+  expect(getOrdinalNumber(65)).toEqual("65th");
 });

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

@@ -1,5 +1,5 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(n, str) {
+  return str.repeat(n);
 }
 
 module.exports = repeatStr;

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

@@ -20,13 +20,30 @@ test("should repeat the string count times", () => {
 // Given a target string `str` and a `count` equal to 1,
 // 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 when count is negative", () => {
+  const str = "hello";
+  const count = -1;
+  expect(() => repeatStr(str, count)).toThrow();
+});