add more edge case for ordinal number checks

Author: Ofonimeedak

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

@@ -3,6 +3,8 @@ function getOrdinalNumber(num) {
   const numLength = numStr.length;
   if (numStr[numLength - 2] === "1" && numStr[numLength - 1] === "1") {
     return num + "th";
+  } else if (numStr[numLength - 2] === "1" && numStr[numLength - 1] === "2") {
+    return num + "th";
   } else if (numStr[numLength - 1] === "1") {
     return num + "st";
   } else if (numStr[numLength - 2] === "1" && numStr[numLength - 1] === "3") {

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

@@ -41,14 +41,22 @@ test(" should return 'th' for numbers ending with 13", () => {
   expect(getOrdinalNumber(413)).toEqual("413th");
   expect(getOrdinalNumber(613)).toEqual("613th");
 });
-//case 4: expect number ending with 2 to return nd
+
+//case:5 expect Numbers ending with 12 to return th
+test(" should return 'th' for numbers ending with 12", () => {
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(41)).toEqual("412th");
+  expect(getOrdinalNumber(612)).toEqual("612th");
+});
+
+//case 6: expect number ending with 2 to return nd
 test(" should return 'nd' for numbers ending with 2", () => {
   expect(getOrdinalNumber(22)).toEqual("22nd");
   expect(getOrdinalNumber(42)).toEqual("42nd");
   expect(getOrdinalNumber(102)).toEqual("102nd");
 });
 
-// case 5: expect number not included in the above case to return th
+// case 7: expect number not included in the above case to return th
 test("should return 'th' for numbers ending with 4, 5,6,7,8,9,0", () => {
   expect(getOrdinalNumber(4)).toEqual("4th");
   expect(getOrdinalNumber(5)).toEqual("5th");