I added tests for 11,12 13 and reimplemented the function

Author: Mona-Eltantawy

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

@@ -1,5 +1,11 @@
-function getOrdinalNumber(num) {
-  return "1st";
+function getOrdinalNumber(n) {
+  if (n % 100 >= 11 && n % 100 <= 13) return n + "th";
+
+  if (n % 10 === 1) return n + "st";
+  if (n % 10 === 2) return n + "nd";
+  if (n % 10 === 3) return n + "rd";
+
+  return n + "th";
 }
 
 module.exports = getOrdinalNumber;

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

@@ -38,5 +38,7 @@ test("should append 'th' for numbers ending with 0, 4-9, except those ending wit
   expect(getOrdinalNumber(0)).toEqual("0th");
   expect(getOrdinalNumber(4)).toEqual("4th");
   expect(getOrdinalNumber(10)).toEqual("10th");
-  expect(getOrdinalNumber(14)).toEqual("14th");
-});
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});