Complete count exercise

Author: anosidium

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

@@ -1,5 +1,7 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  return stringOfCharacters.split("").reduce((accumulator, character) => {
+    return accumulator + (character === findCharacter ? 1 : 0);
+  }, 0);
 }
 
 module.exports = countChar;

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

@@ -22,3 +22,10 @@ test("should count multiple occurrences of a character", () => {
 // 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 occurences of z characters", () => {
+  const str = "aaaaa";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});