Refactor getOrdinalNumber function and expand test cases for ordinal numbers

Author: Payman IB

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

@@ -1,5 +1,13 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const suffixes = ["th", "st", "nd", "rd"];
+  const v = num % 100;
+  console.log(v);
+  if (v >= 11 && v <= 13) {
+    return num + "th";
+  }
+  const suffix = suffixes[(v % 10)] || "th";
+  return num + suffix;
 }
+console.log(getOrdinalNumber(52)); 
 
 module.exports = getOrdinalNumber;

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

@@ -11,3 +11,17 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
 });
+
+test("should return '2nd' for 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+});
+
+test("should return '3rd' for 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+});   
+test("should return '24th' for 24", () => {
+  expect(getOrdinalNumber(24)).toEqual("24th");
+});   
+test("should return '11th' for 11", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+});