Implement countChar function to count character occurrences and add test for zero occurrences

Author: Oussama-Mouggal

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

@@ -18,6 +18,10 @@ test("should count multiple occurrences of a character", () => {
 });
 
 // Scenario: No Occurrences
+test("should return 0 when the character does not occur in the string", () => {
+const count = countChar("hello", "z");
+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,