Glasgow | 25-ITP-Sep | Abraham-Habte | Sprint 3 |Coursework/sprint-3-practice-tdd

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

@@ -1,5 +1,14 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+
+  for (let character of stringOfCharacters) {
+    if (character === findCharacter) {
+      count++;
+    }
+  }
+   return count;
 }
 
 module.exports = countChar;
+
+

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

@@ -17,8 +17,28 @@ test("should count multiple occurrences of a character", () => {
   expect(count).toEqual(5);
 });
 
+test("should count multiple occurrences of a character", () => {
+  const str = "banana";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(3);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "ananas";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(3);
+});
+
 // Scenario: No Occurrences
 // Given the input string str,
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+test("should count no occurrence of a character", () => {
+  const str = "hello";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,12 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const last = num % 10;
+  const lastTwo = num % 100;
+
+  if (last === 1 && lastTwo !== 11) return num + "st";
+  if (last === 2 && lastTwo !== 12) return num + "nd";
+  if (last === 3 && lastTwo !== 13) return num + "rd";
+  return num + "th";
 }
 
 module.exports = getOrdinalNumber;
+

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

@@ -7,7 +7,9 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // Case 1: Identify the ordinal number for 1
 // When the number is 1,
 // Then the function should return "1st"
-
-test("should return '1st' for 1", () => {
-  expect(getOrdinalNumber(1)).toEqual("1st");
+test("append 'st' to numbers ending in 1, except those ending in 11", () => {
+    expect( getOrdinalNumber(1) ).toEqual("1st");
+    expect( getOrdinalNumber(21) ).toEqual("21st");
+    expect( getOrdinalNumber(221) ).toEqual("221st");
 });
+

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

@@ -1,5 +1,13 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(word, n) {
+  if (typeof n !== 'number' || n < 0) {
+   throw new Error("Count must be a non-negative integer");
+  }
+  if (n === 0) {
+    return "";
+  }
+  return word.repeat(n);
 }
 
 module.exports = repeat;
+
+

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

@@ -21,12 +21,30 @@ test("should repeat the string count times", () => {
 // When the repeat function is called with these inputs,
 // Then it should return the original str without repetition, ensuring that a count of 1 results in no repetition.
 
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
 // case: Handle Count of 0:
 // Given a target string str and a count equal to 0,
 // When the repeat function is called with these inputs,
 // Then it should return an empty string, ensuring that a count of 0 results in an empty output.
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("");
+});
 
 // case: Negative Count:
 // Given a target string str and a negative integer count,
 // When the repeat function is called with these inputs,
 // Then it should throw an error or return an appropriate error message, as negative counts are not valid.
+
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = -1;
+  expect(() => repeat(str, count)).toThrow("Count must be a non-negative integer");
+});