Cape Town | 26-ITP-May | Liyema Mfengwana | Sprint 3 | PracticeTDD

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

@@ -1,5 +1,21 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  return 5;
+}
+
+module.exports = countChar;
+
+// fixed version of the function
+
+function countChar(stringOfCharacters, findCharacter) {
+  let count = 0;
+
+  for (let char of stringOfCharacters) {
+    if (char === findCharacter) {
+      count++;
+    }
+  }
+
+  return count;
 }
 
 module.exports = countChar;

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

@@ -22,3 +22,27 @@ 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.
+
+//completed version
+
+const countChar = require("./countChar");
+
+// Scenario: Multiple Occurrences
+test("should count multiple occurrences of a character", () => {
+  const str = "aaaaa";
+  const char = "a";
+
+  const count = countChar(str, char);
+
+  expect(count).toEqual(5);
+});
+
+// Scenario: No Occurrences
+test("should return 0 when character is not found", () => {
+  const str = "hello";
+  const char = "z";
+
+  const count = countChar(str, char);
+
+  expect(count).toEqual(0);
+});

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

@@ -3,3 +3,22 @@ function getOrdinalNumber(num) {
 }
 
 module.exports = getOrdinalNumber;
+
+//correct version of the function
+
+function getOrdinalNumber(num) {
+  const lastDigit = num % 10;
+  const lastTwoDigits = num % 100;
+
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 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";
+}
+
+module.exports = getOrdinalNumber;

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

@@ -18,3 +18,38 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+//fixed and completed version
+
+const getOrdinalNumber = require("./get-ordinal-number");
+
+// st cases (except 11)
+test("should return 'st' for numbers ending in 1 except 11", () => {
+  expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(31)).toEqual("31st");
+});
+
+// nd cases (except 12)
+test("should return 'nd' for numbers ending in 2 except 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(32)).toEqual("32nd");
+});
+
+// rd cases (except 13)
+test("should return 'rd' for numbers ending in 3 except 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+});
+
+// th cases (everything else)
+test("should return 'th' for numbers ending in 4-9 and special teens (11-13)", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(14)).toEqual("14th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+});

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

@@ -5,3 +5,17 @@ function repeatStr() {
 }
 
 module.exports = repeatStr;
+
+//fixed
+
+function repeatStr(str, count) {
+  let result = "";
+
+  for (let i = 0; i < count; i++) {
+    result += str;
+  }
+
+  return result;
+}
+
+module.exports = repeatStr;

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

@@ -30,3 +30,28 @@ test("should repeat the string count times", () => {
 // 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 return the original string when count is 1", () => {
+  const str = "hello";
+  const count = 1;
+
+  const repeatedStr = repeatStr(str, count);
+
+  expect(repeatedStr).toEqual("hello");
+});
+
+test("should return an empty string when count is 0", () => {
+  const str = "hello";
+  const count = 0;
+
+  const repeatedStr = repeatStr(str, count);
+
+  expect(repeatedStr).toEqual("");
+});
+
+test("should throw an error when count is negative", () => {
+  const str = "hello";
+  const count = -1;
+
+  expect(() => repeatStr(str, count)).toThrow();
+});