Adding jest test case for numbers ending in three

Author: KayanatSuleman

Sprint-3/2-practice-tdd/get-ordinal-number.test.js

@@ -25,4 +25,10 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
 test("appends 'nd' for numbers ending in 2 except 12", () => {
   expect(getOrdinalNumber(2)).toEqual("2nd");
   expect(getOrdinalNumber(22)).toEqual("22nd");
+});
+
+// Case 3: Numbers ending in 3.
+test("appends 'rd' for numbers ending in 3 except 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
 });