wrote function and tests for count

Author: mshayriyesaricicek

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

@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+
+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 +22,56 @@ 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.
+
+test("should count multiple occurrences of a character", () => {
+  const str = "aaaaa";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(5);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blind";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blood";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blood";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blood";
+  const char = "l";
+  const count = countChar(str, char);
+  expect(count).toEqual(1);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "bbbrf";
+  const char = "b";
+  const count = countChar(str, char);
+  expect(count).toEqual(3);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "ooooa";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(4);
+});
+
+// handling invalid input
+// the tests work assuming that only letters are in the string
+// numbers and special characters are not tested for