Complete countChar function to make all jest tests pass in 2-practice-tdd/count.js

Author: Temceo

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

@@ -1,5 +1,10 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  if (stringOfCharacters.length === 0 || findCharacter.length === 0) return 0;
+  let count = 0;
+  for (const char of stringOfCharacters) {
+    if (char === findCharacter) count++;
+  }
+  return count;
 }
 
 module.exports = countChar;