added date function for testing

Author: vigneshwaran-chandrasekaran

src/__tests__/example.test.js

@@ -1,4 +1,6 @@
-import { add } from '../helpers/example';
+import { add, dateChange } from '../helpers/example';
+
+const DATE = '2019/06/01';
 
 test('Adding 1 + 23 equals 24', () => {
 	expect(add(1, 23)).toBe(24);
@@ -19,3 +21,7 @@ test('Adding 7 equals 8', () => {
 test('Adding -1 + 6 equals 5', () => {
 	expect(add(-1, 6)).toBe(5);
 });
+
+test('Date modification', () => {
+	expect(dateChange(DATE).toEqual('June 1, 2019'));
+});

src/helpers/example.js

@@ -1,3 +1,10 @@
+import moment from 'moment';
+
 export function add(a, b = 1) {
 	return a + b;
 }
+
+export function dateChange(date) {
+	const d = new Date(date);
+	return moment(d).format('MMMM d, YYYY');
+}