Add E2E tests to deployment pipeline

.github/workflows/pipeline.yml

@@ -23,3 +23,9 @@ jobs:
         run: npm run build
       - name: Test
         run: npm test
+      - name: E2E tests
+        uses: cypress-io/github-action@v2
+        with:
+          command: npm run test:e2e
+          start: npm run start-test
+          wait-on: http://localhost:5000

app.js

@@ -7,5 +7,5 @@ const PORT = process.env.PORT || 5000
 app.use(express.static('dist'))
 
 app.listen(PORT, () => {
-  console.log('server started on port 5000')
+  console.log(`server started on port ${PORT}`)
 })

cypress.json

@@ -0,0 +1 @@
+{}

cypress/integration/app.js

@@ -0,0 +1,9 @@
+/* global cy */
+
+describe('Pokedex', function() {
+  it('frontpage can be opened', function () {
+    cy.visit('http://localhost:5000')
+    cy.contains('pikachu')
+    cy.contains('Pokémon and Pokémon character names are trademarks of Nintendo')
+  })
+})

package.json

@@ -5,10 +5,12 @@
   "main": "src/index.js",
   "scripts": {
     "start": "webpack-dev-server --open --mode development",
+    "start-test": "NODE_ENV=test node app.js",
     "start-prod": "node app.js",
     "test": "jest",
     "eslint": "eslint './**/*.{js,jsx}'",
-    "build": "webpack --mode production"
+    "build": "webpack --mode production",
+    "test:e2e": "npx cypress run"
   },
   "repository": {
     "type": "git",