Manchester | Precious Moses | 26-ITP-Sep | Sprint 2 | Practice-TDD

practice-tdd/count.js

@@ -1,3 +1,10 @@
 export function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+
+  for (let i = 0; i < stringOfCharacters.length; i++){
+    if(stringOfCharacters[1] === findCharacter){
+      count++
+    }
+  }
+  return count;
 }

practice-tdd/count.test.js

@@ -1,5 +1,7 @@
 // implement a function countChar that counts the number of times a character occurs in a string
 import { countChar } from "./count.js";
+import { test } from "node:test";
+import assert from "node:assert/strict";
 // Given a string `str` and a single character `char` to search for,
 // When the countChar function is called with these inputs,
 // Then it should:
@@ -14,11 +16,18 @@ test("should count multiple occurrences of a character", () => {
   const str = "aaaaa";
   const char = "a";
   const count = countChar(str, char);
-  expect(count).toEqual(5);
+  assert.equal(count, 5);
 });
 
 // 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("should return 0 when the character does not occur", () => {
+  const str = "moses";
+  const char = "z";
+  const count = countChar(str, char);
+  assert.equal(count, 0);
+})

practice-tdd/get-ordinal-number.js

@@ -1,3 +1,19 @@
 export function getOrdinalNumber(num) {
-  return "1st";
+  const lastDigit = num % 10;
+  const lastTwoDigit = num % 100;
+
+  if (lastTwoDigit === 11 || lastTwoDigit === 12 || lastTwoDigit === 13) {
+    return `${num}th`;
+  }
+  if (lastDigit === 1) {
+    return `${num}st`;
+  }
+  if (lastDigit === 2) {
+    return `${num}nd`;
+  }
+  if (lastDigit === 3) {
+    return `${num}rd`;
+  }
+    return `${num}th`;
+
 }

practice-tdd/get-ordinal-number.test.js

@@ -18,3 +18,31 @@ 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, except those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(122)).toEqual("122nd");
+});
+
+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");
+});
+
+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");
+});
+
+test("should append 'th' for all other nnumbers", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+});