merge: Add test case and fix the OddEvenSort Algorithm (TheAlgorithms#955)

Author: Ankush263

Sorts/OddEvenSort.js

@@ -30,4 +30,5 @@ export function oddEvenSort (arr) {
       }
     }
   }
+  return arr
 }

Sorts/test/OddEvenSort.test.js

@@ -0,0 +1,25 @@
+import { oddEvenSort } from '../OddEvenSort'
+
+test('The OddEvenSort of the array [5, 4, 3, 2, 1] is [1, 2, 3, 4, 5]', () => {
+  const arr = [5, 4, 3, 2, 1]
+  const res = oddEvenSort(arr)
+  expect(res).toEqual([1, 2, 3, 4, 5])
+})
+
+test('The OddEvenSort of the array [] is []', () => {
+  const arr = []
+  const res = oddEvenSort(arr)
+  expect(res).toEqual([])
+})
+
+test('The OddEvenSort of the array [10, 14, 12, 20] is [10, 12, 14, 20]', () => {
+  const arr = [10, 14, 12, 20]
+  const res = oddEvenSort(arr)
+  expect(res).toEqual([10, 12, 14, 20])
+})
+
+test('The OddEvenSort of the array [166, 169, 144] is [144, 166, 169]', () => {
+  const arr = [166, 169, 144]
+  const res = oddEvenSort(arr)
+  expect(res).toEqual([144, 166, 169])
+})