feat: add cypress and cypress eslint plugin

.eslintrc

@@ -70,6 +70,15 @@
         "plugin:testing-library/react",
         "plugin:jest-dom/recommended"
       ]
+    },
+    // Configuration for e2e testing (Cypress)
+    {
+      "files": ["**/*.e2e.ts"],
+      "plugins": ["cypress"],
+      "extends": ["plugin:cypress/recommended"],
+      "parserOptions": {
+        "project": "./cypress/tsconfig.json"
+      }
     }
   ]
 }

.gitignore

@@ -8,6 +8,10 @@
 # testing
 /coverage
 
+# cypress
+cypress/screenshots
+cypress/videos
+
 # next.js
 /.next
 /out

cypress.config.ts

@@ -0,0 +1,8 @@
+/* eslint-disable import/no-extraneous-dependencies */
+import { defineConfig } from 'cypress';
+
+export default defineConfig({
+  e2e: {
+    baseUrl: 'http://localhost:3000',
+  },
+});

cypress/e2e/navigation.cy.ts

@@ -0,0 +1,15 @@
+describe('Navigation', () => {
+  it('should navigate to the about page', () => {
+    // Start from the index page
+    cy.visit('/');
+
+    // Find a link with an href attribute containing "about" and click it
+    cy.get('a[href*="about"]').click();
+
+    // The new url should include "/about"
+    cy.url().should('include', '/about');
+
+    // The new page should contain an h1 with "About page"
+    cy.get('p').contains('Lorem');
+  });
+});

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.ts

@@ -0,0 +1,37 @@
+/// <reference types="cypress" />
+// ***********************************************
+// This example commands.ts 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) => { ... })
+//
+// declare global {
+//   namespace Cypress {
+//     interface Chainable {
+//       login(email: string, password: string): Chainable<void>
+//       drag(subject: string, options?: Partial<TypeOptions>): Chainable<Element>
+//       dismiss(subject: string, options?: Partial<TypeOptions>): Chainable<Element>
+//       visit(originalFn: CommandOriginalFn, url: string, options: Partial<VisitOptions>): Chainable<Element>
+//     }
+//   }
+// }

cypress/support/e2e.ts

@@ -0,0 +1,22 @@
+/* eslint-disable import/no-extraneous-dependencies */
+// ***********************************************************
+// This example support/e2e.ts 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 '@testing-library/cypress/add-commands';
+import './commands';
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

cypress/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "target": "es5",
+    "lib": ["es5", "dom"],
+    "types": ["cypress", "node"],
+
+    "isolatedModules": false
+  },
+  "include": ["**/*.cy.ts"]
+}