Add tests for getOrdinalNumber to cover cases for 2, 3, and general numbers

Author: alexandru-pocovnicu

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

@@ -18,3 +18,31 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+// Case 2: Numbers ending with 2 (but not 12)
+// When the number ends with 2, except those ending with 12,
+// Then the function should return a string by appending "nd" to the number.
+test("should append 'nd' for numbers ending with 2, except those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(122)).toEqual("122nd");
+});
+
+// Case 3: Numbers ending with 3 (but not 13)
+// When the number ends with 3, except those ending with 13,
+// Then the function should return a string by appending "rd" to the number.
+test("should append 'rd' for numbers ending with 3, except those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(123)).toEqual("123rd");
+});
+
+// Case 4: Numbers ending with any number (but not 1,2 or 3)
+// When the number ends with any number, except those ending with 1,2 or 3,
+// Then the function should return a string by appending "th" to the number.
+test("should append 'th' for numbers ending with any number including 11,12 or 13, except those ending with 1,2 or 3", () => {
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(25)).toEqual("25th");
+  expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(4)).toEqual("4th");
+});