Add initial tests

.eslintrc.js

@@ -6,7 +6,13 @@ module.exports = {
     node: true,
     es6: true,
   },
-  extends: ['eslint:recommended', 'plugin:prettier/recommended', 'next', 'next/core-web-vitals'],
+  extends: [
+    'eslint:recommended',
+    'plugin:prettier/recommended',
+    'next',
+    'next/core-web-vitals',
+    'plugin:cypress/recommended',
+  ],
   rules: {
     'prettier/prettier': 'error',
     'react/react-in-jsx-scope': 'off',

.github/workflows/integration-tests.yml

@@ -0,0 +1,23 @@
+name: E2E tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        node-version: [18.x]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Cypress run
+        uses: cypress-io/github-action@v5
+        with:
+          build: npm run build
+          start: npm start

cypress.config.js

@@ -0,0 +1,12 @@
+const { defineConfig } = require('cypress')
+
+module.exports = defineConfig({
+  e2e: {
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    },
+    env: {
+      NODE_ENV: 'development',
+    },
+  },
+})

cypress/e2e/App.cy.js

@@ -0,0 +1,5 @@
+describe('template spec', () => {
+  it('passes', () => {
+    cy.visit('http://localhost:3000')
+  })
+})

cypress/e2e/Navigation.cy.js

@@ -0,0 +1,45 @@
+describe('Navigation', () => {
+  it('visiting about renders the page successfully', () => {
+    cy.visit('http://localhost:3000')
+
+    cy.get('a[href*="about"]').first().click()
+
+    cy.url().should('include', '/about')
+
+    cy.get('h1').contains('About')
+    cy.get('h3').contains('Liam Sorsby')
+    cy.get('div').contains('Principal Site Reliability Engineer')
+  })
+
+  it('visiting blog renders the page successfully', () => {
+    cy.visit('http://localhost:3000')
+
+    cy.get('a[href*="blog"]').first().click()
+
+    cy.url().should('include', '/blog')
+
+    cy.get('h1').contains('All Posts')
+  })
+
+  it('visiting tags renders the page successfully', () => {
+    cy.visit('http://localhost:3000')
+
+    cy.get('a[href*="tags"]').first().click()
+
+    cy.url().should('include', '/tags')
+
+    cy.get('h1').contains('Tags')
+  })
+
+  it('visiting Projects renders the page successfully', () => {
+    cy.visit('http://localhost:3000')
+
+    cy.get('a[href*="projects"]').first().click()
+
+    cy.url().should('include', '/projects')
+
+    cy.get('h1').contains('Projects')
+    cy.get('h2').contains('Website')
+    cy.get('h2').contains('Infrastructure As Code (IoC)')
+  })
+})

cypress/fixtures/example.json

@@ -0,0 +1,5 @@
+{
+  "name": "Using fixtures to represent data",
+  "email": "hello@cypress.io",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

cypress/support/commands.js

@@ -0,0 +1,25 @@
+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })

cypress/support/e2e.js

@@ -0,0 +1,20 @@
+// ***********************************************************
+// This example support/e2e.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

layouts/PostLayout.cy.js

@@ -0,0 +1,9 @@
+import React from 'react'
+import PostLayout from './PostLayout'
+
+describe('<PostLayout />', () => {
+  it('renders', () => {
+    // see: https://on.cypress.io/mounting-react
+    cy.mount(<PostLayout />)
+  })
+})

package.json

@@ -8,6 +8,7 @@
     "build": "next build && node ./scripts/generate-sitemap",
     "serve": "next start",
     "test": "exit 0",
+    "cypress": "cypress open --browser chrome",
     "analyze": "cross-env ANALYZE=true next build",
     "lint": "next lint --dir pages --dir components --dir lib --dir layouts",
     "lint:fix": "next lint --fix --dir pages --dir components --dir lib --dir layouts --dir scripts",
@@ -52,10 +53,12 @@
   "devDependencies": {
     "@svgr/webpack": "^6.5.1",
     "cross-env": "^7.0.3",
+    "cypress": "^12.11.0",
     "dedent": "^0.7.0",
     "eslint": "^7.29.0",
     "eslint-config-next": "13.1.1",
     "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-cypress": "^2.13.3",
     "eslint-plugin-prettier": "^3.3.1",
     "file-loader": "^6.0.0",
     "globby": "11.0.3",