Run test in CI

.github/workflows/ci.yml

@@ -31,3 +31,4 @@ jobs:
     - run: pnpm install
     - run: pnpm lint
     - run: pnpm build
+    - run: pnpm test

cypress.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'cypress'
+
+export default defineConfig({
+  e2e: {
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    },
+    baseUrl: 'http://localhost:3000',
+  },
+})

cypress/e2e/login.cy.ts

@@ -0,0 +1,84 @@
+describe('login spec', () => {
+  it('Login page rendered', () => {
+    cy.visit('/login')
+
+    // Check if the form from login.tsx is rendered
+    cy.get('input[name="username"]')
+      .should('be.visible')
+    cy.get('input[name="password"]')
+      .should('be.visible')
+    cy.get('button[type="submit"]')
+      .should('be.visible')
+
+    // Forgot password a tag with text "Forgot password?" should be visible
+    cy.contains('a', 'Forgot password?')
+      .should('be.visible')
+    cy.contains('a', 'Register Now!')
+      .should('be.visible')
+  })
+
+  it('Authentication error', () => {
+    cy.visit('/login')
+
+    // Fill in the form
+    cy.get('input[name="username"]')
+      .clear()
+      .type('Username')
+    cy.get('input[name="password"]')
+      .clear()
+      .type('wrong')
+
+    cy.intercept('POST', '/api/auth/callback/credentials', {
+      statusCode: 401,
+      body: { url: 'http://localhost:3000/api/auth/error?error=Invalid%20username%20or%20password' },
+    })
+
+    // Submit
+    cy.get('button[type="submit"]')
+      .click()
+
+    // See error message after submit
+    cy.contains('Invalid username or password')
+      .should('be.visible')
+  })
+
+  it('Authenticated', () => {
+    cy.visit('/login')
+
+    // Fill in the form
+    cy.get('input[name="username"]')
+      .clear()
+      .type('Username')
+    cy.get('input[name="password"]')
+      .clear()
+      .type('Password')
+
+    // Submit
+    cy.get('button[type="submit"]')
+      .click()
+
+    // Redirected to '/' after submit
+    cy.url()
+      .should('eq', `${Cypress.config().baseUrl}/`)
+  })
+
+  it('Authenticated and redirected to callback URL', () => {
+    cy.visit('/login?callbackUrl=%2Fpokemons')
+
+    // Fill in the form
+    cy.get('input[name="username"]')
+      .clear()
+      .type('Username')
+    cy.get('input[name="password"]')
+      .clear()
+      .type('Password')
+
+    // Submit
+    cy.get('button[type="submit"]')
+      .click()
+
+    // Redirected to '/' after submit
+    cy.url()
+      .should('eq', `${Cypress.config().baseUrl}/pokemons`)
+  })
+})

cypress/fixtures/example.json

@@ -0,0 +1,5 @@
+{
+  "name": "Using fixtures to represent data",
+  "email": "[email protected]",
+  "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 +1,20 @@
+// ***********************************************************
+// 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 './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

package.json

@@ -6,7 +6,10 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "cypress:open": "cypress open",
+    "cypress:run": "cypress run",
+    "test": "start-server-and-test dev http://localhost:3000 cypress:run"
   },
   "dependencies": {
     "@formatjs/intl-localematcher": "^0.5.4",
@@ -42,6 +45,7 @@
     "@types/react-dom": "^18.3.0",
     "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.21.0",
+    "cypress": "^13.9.0",
     "eslint": "^8.57.0",
     "eslint-config-airbnb": "^19.0.4",
     "eslint-config-airbnb-typescript": "^17.1.0",
@@ -52,6 +56,7 @@
     "eslint-plugin-react-hooks": "^4.6.2",
     "json-server": "^0.17.4",
     "sass": "^1.77.0",
+    "start-server-and-test": "^2.0.3",
     "typescript": "^5.4.5"
   }
 }