categorised the test-cases

Author: AdnaanA

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

@@ -8,70 +8,59 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // When the number is 1,
 // Then the function should return "1st"
 
-test("should return '1st' for 1", () => {
+// category 1: ends with 1 (but not 11) -> "st"
+test("append 'st' to numbers ending in 1, except those ending in 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(101)).toEqual("101st");
 });
 
 // Case 2: Identify the ordinal number for 2
 // When the number is 2,
 // Then the function should return "2nd"
 
-test("should return '2nd' for 2", () => {
+// category 2: ends with 2 (but not 12) -> "nd"
+test("append 'nd' to numbers ending in 2, except those ending in 12", () => {
   expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(102)).toEqual("102nd");
 });
 
 // Case 3: Identify the ordinal number for 3
 // When the number is 3,
 // Then the function should return "3rd"
 
-test("should return '3rd' for 3", () => {
+// category 3: ends with 3 (but not 13) -> "rd"
+test("append 'rd' to numbers ending in 3, except those ending in 13", () => {
   expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(103)).toEqual("103rd");
 });
 
 // Case 4: Identify the ordinal number for 4
 // When the number is 4,
 // Then the function should return "4th"
 
-test("should return '4th' for 4", () => {
+// category 4: all other numbers -> "th"
+test("append 'th' to all other numbers", () => {
   expect(getOrdinalNumber(4)).toEqual("4th");
-});
-
-// Case 5: Identify the ordinal number for 11
-// When the number is 11,
-// Then the function should return "11th"
-
-test("should return '11th' for 11", () => {
   expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(14)).toEqual("14th");
+  expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(112)).toEqual("112th");
+  expect(getOrdinalNumber(113)).toEqual("113th");
+  expect(getOrdinalNumber(114)).toEqual("114th");
 });
 
-// Case 6: Identify the ordinal number for 21
-// When the number is 21,
-// Then the function should return "21st"
-
-test("should return '21st' for 21", () => {
-  expect(getOrdinalNumber(21)).toEqual("21st");
-});
-
-// Case 7: Identify the ordinal number for 102
-// When the number is 102,
-// Then the function should return "102nd"
-
-test("should return '102nd' for 102", () => {
-  expect(getOrdinalNumber(102)).toEqual("102nd");
-});
-
-// Case 8: Identify the ordinal number for 111
-// When the number is 111,
-// Then the function should return "111th"
-
-test("should return '111th' for 111", () => {
+// category 5: special case for 11, 12, 13 -> "th"
+test("append 'th' to numbers ending in 11, 12, or 13", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
   expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(112)).toEqual("112th");
+  expect(getOrdinalNumber(113)).toEqual("113th");
 });
 
-// case 9: identify the ordinal number for 211
-// when the number is 211
-// then the function should return "211th"
-
-test("should return '33rd' for 33", () => {
-  expect(getOrdinalNumber(33)).toEqual("33rd");
-});