test: add cases for non-alphabet characters in countChar function

Author: Grajales-K

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

@@ -41,4 +41,13 @@ test("Should return 0 for empty string", () => {
 // case 4
 test("should be case sensitive", () => {
   expect(countChar("aA", "a")).toEqual(1);
-});
+});
+
+//case 5 Non-alphabet characters
+test(`Should work with numbers and symbols`, () => {
+  expect(countChar("123451234123!&", "1")).toEqual(3);
+  expect(countChar("@1hello@", "@")).toEqual(2);
+  expect(countChar("white space ", " ")).toEqual(2);
+  expect(countChar("-2534!-1322!", "!")).toEqual(2);
+  expect(countChar("-hello ", "-")).toEqual(1);
+})