test: add jest setup, sample test and update ci workflow

Author: vedantoncloud

.github/workflows/ci.yml

@@ -1,26 +1 @@
-name: CI — Tests
-
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v4
-
-      - name: Set up Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: '18'
-
-      - name: Install dependencies
-        run: npm install
-
-      - name: Run tests
-        run: npm test
+<PASTE THE YAML CONTENT EXACTLY HERE (between the single quotes) >

test/example.test.js

@@ -1,3 +1,5 @@
-test("Vedant simple test", () => {
-  expect(2 + 2).toBe(4);
+const app = require('../app');
+
+test('basic hello test', () => {
+  expect(app.hello()).toBe('Hello from MyApp - dev');
 });