code- get-ordinal number

Author: Ogbemi mene

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

@@ -18,3 +18,46 @@ 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(32)).toEqual("32nd");
+  expect(getOrdinalNumber(242)).toEqual("242nd");
+});
+
+// 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(43)).toEqual("43rd"); // Note: should be "43rd" based on standard logic, fixing a potential typo
+  expect(getOrdinalNumber(103)).toEqual("103rd");
+});
+
+// Case 4: General numbers ending with 4 through 9, and 0
+// When the number ends with 4, 5, 6, 7, 8, 9, or 0,
+// Then the function should return a string by appending "th" to the number.
+test("should append 'th' for general numbers ending in 4-9 or 0", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(7)).toEqual("7th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(56)).toEqual("56th");
+});
+
+// Case 5: The Exception Rule (Numbers ending with 11, 12, or 13)
+// When the number ends specifically with 11, 12, or 13 (the teen boundary),
+// Then the function should always override standard rules and append "th".
+test("should correctly append 'th' for exceptions ending in 11, 12, or 13", () => {
+  // Primary boundaries
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  
+  // Larger representative samples matching the group
+  expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(212)).toEqual("212th");
+  expect(getOrdinalNumber(1013)).toEqual("1013th");
+});