added the test cases for even or odd checker

Author: pvcube66

Diff for: Bit-Manipulation/test/EvenorOdd.test.js

@@ -0,0 +1,39 @@
+import { evenOrOdd } from '../EvenorOdd'
+
+test('check evenOrOdd of 25 is odd', () => {
+  const res = evenOrOdd(25)
+  expect(res).toBe('odd')
+})
+
+test('check evenOrOdd of 36 is even', () => {
+  const res = evenOrOdd(36)
+  expect(res).toBe('even')
+})
+
+test('check evenOrOdd of 0 is even', () => {
+  const res = evenOrOdd(0)
+  expect(res).toBe('even')
+})
+
+test('check evenOrOdd of -13 is odd', () => {
+  const res = evenOrOdd(-13)
+  expect(res).toBe('odd')
+})
+
+test('check evenOrOdd of 4294967295 is odd', () => {
+  const res = evenOrOdd(4294967295)
+  expect(res).toBe('odd')
+})
+
+test('check evenOrOdd of -36 is even', () => {
+  const res = evenOrOdd(-36)
+  expect(res).toBe('even')
+})
+
+test('check evenOrOdd of 21.1 throws error', () => {
+  expect(() => evenOrOdd(21.1)).toThrow()
+})
+
+test('check evenOrOdd of {} throws error', () => {
+  expect(() => evenOrOdd({})).toThrow()
+})