Adding jest cases for numbers ending in 4-9, and 0

Author: KayanatSuleman

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

@@ -31,4 +31,12 @@ test("appends 'nd' for numbers ending in 2 except 12", () => {
 test("appends 'rd' for numbers ending in 3 except 13", () => {
   expect(getOrdinalNumber(3)).toEqual("3rd");
   expect(getOrdinalNumber(23)).toEqual("23rd");
+});
+
+// Case 4: Numbers ending with 4-9, 0 (always ending "th")
+test("should append 'th' for numbers ending with 0 or 4-9", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(49)).toEqual("49th");
 });