.github/workflows/playwright.yml

@@ -0,0 +1,27 @@
+name: Playwright Tests
+on:
+  push:
+    branches: [ main, master, dev ]
+  pull_request:
+    branches: [ main, master, dev ]
+jobs:
+  test:
+    timeout-minutes: 60
+    runs-on: ubuntu-latest
+    steps:
+      - uses: https://github.com/docker/actions/checkout@v4
+      - uses: https://github.com/docker/actions/setup-node@v4
+        with:
+          node-version: lts/*
+      - name: Install dependencies
+        run: npm ci
+      - name: Install Playwright Browsers
+        run: npx playwright install --with-deps
+      - name: Run Playwright tests
+        run: npx playwright test
+      - uses: https://github.com/docker/actions/upload-artifact@v4
+        if: always()
+        with:
+          name: playwright-report
+          path: playwright-report/
+          retention-days: 30

.gitignore

@@ -33,3 +33,7 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+/test-results/
+/playwright-report/
+/blob-report/
+/playwright/.cache/

package-lock.json

@@ -48,6 +48,9 @@
 				"tailwind-variants": "0.1.20",
 				"tailwindcss": "3.4.3",
 				"typescript": "5.0.4"
+			},
+			"devDependencies": {
+				"@playwright/test": "^1.44.1"
 			}
 		},
 		"node_modules/@alloc/quick-lru": {
@@ -1014,6 +1017,21 @@
 				"url": "https://opencollective.com/unts"
 			}
 		},
+		"node_modules/@playwright/test": {
+			"version": "1.44.1",
+			"resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.44.1.tgz",
+			"integrity": "sha512-1hZ4TNvD5z9VuhNJ/walIjvMVvYkZKf71axoF/uiAqpntQJXpG64dlXhoDXE3OczPuTuvjf/M5KWFg5VAVUS3Q==",
+			"devOptional": true,
+			"dependencies": {
+				"playwright": "1.44.1"
+			},
+			"bin": {
+				"playwright": "cli.js"
+			},
+			"engines": {
+				"node": ">=16"
+			}
+		},
 		"node_modules/@react-aria/button": {
 			"version": "3.9.3",
 			"resolved": "https://registry.npmjs.org/@react-aria/button/-/button-3.9.3.tgz",
@@ -3739,6 +3757,19 @@
 			"resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
 			"integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw=="
 		},
+		"node_modules/fsevents": {
+			"version": "2.3.2",
+			"resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+			"integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+			"hasInstallScript": true,
+			"optional": true,
+			"os": [
+				"darwin"
+			],
+			"engines": {
+				"node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+			}
+		},
 		"node_modules/function-bind": {
 			"version": "1.1.2",
 			"resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
@@ -5121,6 +5152,36 @@
 				"node": ">= 6"
 			}
 		},
+		"node_modules/playwright": {
+			"version": "1.44.1",
+			"resolved": "https://registry.npmjs.org/playwright/-/playwright-1.44.1.tgz",
+			"integrity": "sha512-qr/0UJ5CFAtloI3avF95Y0L1xQo6r3LQArLIg/z/PoGJ6xa+EwzrwO5lpNr/09STxdHuUoP2mvuELJS+hLdtgg==",
+			"devOptional": true,
+			"dependencies": {
+				"playwright-core": "1.44.1"
+			},
+			"bin": {
+				"playwright": "cli.js"
+			},
+			"engines": {
+				"node": ">=16"
+			},
+			"optionalDependencies": {
+				"fsevents": "2.3.2"
+			}
+		},
+		"node_modules/playwright-core": {
+			"version": "1.44.1",
+			"resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.44.1.tgz",
+			"integrity": "sha512-wh0JWtYTrhv1+OSsLPgFzGzt67Y7BE/ZS3jEqgGBlp2ppp1ZDj8c+9IARNW4dwf1poq5MgHreEM2KV/GuR4cFA==",
+			"devOptional": true,
+			"bin": {
+				"playwright-core": "cli.js"
+			},
+			"engines": {
+				"node": ">=16"
+			}
+		},
 		"node_modules/possible-typed-array-names": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/possible-typed-array-names/-/possible-typed-array-names-1.0.0.tgz",

package.json

@@ -6,7 +6,8 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-		"lint": "eslint . --ext .ts,.tsx -c .eslintrc.json --fix"
+    "lint": "eslint . --ext .ts,.tsx -c .eslintrc.json --fix",
+    "test": "concurrently \"next dev\" \"playwright test\""
   },
   "dependencies": {
     "@nextui-org/button": "2.0.33",
@@ -14,12 +15,12 @@
     "@nextui-org/input": "2.2.1",
     "@nextui-org/kbd": "2.0.29",
     "@nextui-org/link": "2.0.31",
+    "@nextui-org/listbox": "2.1.21",
     "@nextui-org/navbar": "2.0.32",
     "@nextui-org/snippet": "2.0.37",
     "@nextui-org/switch": "2.0.30",
     "@nextui-org/system": "2.2.1",
     "@nextui-org/theme": "2.2.5",
-		"@nextui-org/listbox": "2.1.21",
     "@react-aria/ssr": "3.9.4",
     "@react-aria/visually-hidden": "3.8.12",
     "@types/node": "20.5.7",
@@ -49,5 +50,8 @@
     "tailwind-variants": "0.1.20",
     "tailwindcss": "3.4.3",
     "typescript": "5.0.4"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.44.1"
   }
 }

playwright.config.ts

@@ -0,0 +1,77 @@
+import { defineConfig, devices } from '@playwright/test';
+
+/**
+ * Read environment variables from file.
+ * https://github.com/motdotla/dotenv
+ */
+// require('dotenv').config();
+
+/**
+ * See https://playwright.dev/docs/test-configuration.
+ */
+export default defineConfig({
+  testDir: './tests/e2e',
+  /* Run tests in files in parallel */
+  fullyParallel: true,
+  /* Fail the build on CI if you accidentally left test.only in the source code. */
+  forbidOnly: !!process.env.CI,
+  /* Retry on CI only */
+  retries: process.env.CI ? 2 : 0,
+  /* Opt out of parallel tests on CI. */
+  workers: process.env.CI ? 1 : undefined,
+  /* Reporter to use. See https://playwright.dev/docs/test-reporters */
+  reporter: 'html',
+  /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
+  use: {
+    /* Base URL to use in actions like `await page.goto('/')`. */
+    // baseURL: 'http://127.0.0.1:3000',
+
+    /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
+    trace: 'on-first-retry',
+  },
+
+  /* Configure projects for major browsers */
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+
+    {
+      name: 'firefox',
+      use: { ...devices['Desktop Firefox'] },
+    },
+
+    {
+      name: 'webkit',
+      use: { ...devices['Desktop Safari'] },
+    },
+
+    /* Test against mobile viewports. */
+    // {
+    //   name: 'Mobile Chrome',
+    //   use: { ...devices['Pixel 5'] },
+    // },
+    // {
+    //   name: 'Mobile Safari',
+    //   use: { ...devices['iPhone 12'] },
+    // },
+
+    /* Test against branded browsers. */
+    // {
+    //   name: 'Microsoft Edge',
+    //   use: { ...devices['Desktop Edge'], channel: 'msedge' },
+    // },
+    // {
+    //   name: 'Google Chrome',
+    //   use: { ...devices['Desktop Chrome'], channel: 'chrome' },
+    // },
+  ],
+
+  /* Run your local dev server before starting the tests */
+  // webServer: {
+  //   command: 'npm run start',
+  //   url: 'http://127.0.0.1:3000',
+  //   reuseExistingServer: !process.env.CI,
+  // },
+});

tests-examples/demo-todo-app.spec.ts

@@ -0,0 +1,437 @@
+import { test, expect, type Page } from '@playwright/test';
+
+test.beforeEach(async ({ page }) => {
+  await page.goto('https://demo.playwright.dev/todomvc');
+});
+
+const TODO_ITEMS = [
+  'buy some cheese',
+  'feed the cat',
+  'book a doctors appointment'
+];
+
+test.describe('New Todo', () => {
+  test('should allow me to add todo items', async ({ page }) => {
+    // create a new todo locator
+    const newTodo = page.getByPlaceholder('What needs to be done?');
+
+    // Create 1st todo.
+    await newTodo.fill(TODO_ITEMS[0]);
+    await newTodo.press('Enter');
+
+    // Make sure the list only has one todo item.
+    await expect(page.getByTestId('todo-title')).toHaveText([
+      TODO_ITEMS[0]
+    ]);
+
+    // Create 2nd todo.
+    await newTodo.fill(TODO_ITEMS[1]);
+    await newTodo.press('Enter');
+
+    // Make sure the list now has two todo items.
+    await expect(page.getByTestId('todo-title')).toHaveText([
+      TODO_ITEMS[0],
+      TODO_ITEMS[1]
+    ]);
+
+    await checkNumberOfTodosInLocalStorage(page, 2);
+  });
+
+  test('should clear text input field when an item is added', async ({ page }) => {
+    // create a new todo locator
+    const newTodo = page.getByPlaceholder('What needs to be done?');
+
+    // Create one todo item.
+    await newTodo.fill(TODO_ITEMS[0]);
+    await newTodo.press('Enter');
+
+    // Check that input is empty.
+    await expect(newTodo).toBeEmpty();
+    await checkNumberOfTodosInLocalStorage(page, 1);
+  });
+
+  test('should append new items to the bottom of the list', async ({ page }) => {
+    // Create 3 items.
+    await createDefaultTodos(page);
+
+    // create a todo count locator
+    const todoCount = page.getByTestId('todo-count')
+  
+    // Check test using different methods.
+    await expect(page.getByText('3 items left')).toBeVisible();
+    await expect(todoCount).toHaveText('3 items left');
+    await expect(todoCount).toContainText('3');
+    await expect(todoCount).toHaveText(/3/);
+
+    // Check all items in one call.
+    await expect(page.getByTestId('todo-title')).toHaveText(TODO_ITEMS);
+    await checkNumberOfTodosInLocalStorage(page, 3);
+  });
+});
+
+test.describe('Mark all as completed', () => {
+  test.beforeEach(async ({ page }) => {
+    await createDefaultTodos(page);
+    await checkNumberOfTodosInLocalStorage(page, 3);
+  });
+
+  test.afterEach(async ({ page }) => {
+    await checkNumberOfTodosInLocalStorage(page, 3);
+  });
+
+  test('should allow me to mark all items as completed', async ({ page }) => {
+    // Complete all todos.
+    await page.getByLabel('Mark all as complete').check();
+
+    // Ensure all todos have 'completed' class.
+    await expect(page.getByTestId('todo-item')).toHaveClass(['completed', 'completed', 'completed']);
+    await checkNumberOfCompletedTodosInLocalStorage(page, 3);
+  });
+
+  test('should allow me to clear the complete state of all items', async ({ page }) => {
+    const toggleAll = page.getByLabel('Mark all as complete');
+    // Check and then immediately uncheck.
+    await toggleAll.check();
+    await toggleAll.uncheck();
+
+    // Should be no completed classes.
+    await expect(page.getByTestId('todo-item')).toHaveClass(['', '', '']);
+  });
+
+  test('complete all checkbox should update state when items are completed / cleared', async ({ page }) => {
+    const toggleAll = page.getByLabel('Mark all as complete');
+    await toggleAll.check();
+    await expect(toggleAll).toBeChecked();
+    await checkNumberOfCompletedTodosInLocalStorage(page, 3);
+
+    // Uncheck first todo.
+    const firstTodo = page.getByTestId('todo-item').nth(0);
+    await firstTodo.getByRole('checkbox').uncheck();
+
+    // Reuse toggleAll locator and make sure its not checked.
+    await expect(toggleAll).not.toBeChecked();
+
+    await firstTodo.getByRole('checkbox').check();
+    await checkNumberOfCompletedTodosInLocalStorage(page, 3);
+
+    // Assert the toggle all is checked again.
+    await expect(toggleAll).toBeChecked();
+  });
+});
+
+test.describe('Item', () => {
+
+  test('should allow me to mark items as complete', async ({ page }) => {
+    // create a new todo locator
+    const newTodo = page.getByPlaceholder('What needs to be done?');
+
+    // Create two items.
+    for (const item of TODO_ITEMS.slice(0, 2)) {
+      await newTodo.fill(item);
+      await newTodo.press('Enter');
+    }
+
+    // Check first item.
+    const firstTodo = page.getByTestId('todo-item').nth(0);
+    await firstTodo.getByRole('checkbox').check();
+    await expect(firstTodo).toHaveClass('completed');
+
+    // Check second item.
+    const secondTodo = page.getByTestId('todo-item').nth(1);
+    await expect(secondTodo).not.toHaveClass('completed');
+    await secondTodo.getByRole('checkbox').check();
+
+    // Assert completed class.
+    await expect(firstTodo).toHaveClass('completed');
+    await expect(secondTodo).toHaveClass('completed');
+  });
+
+  test('should allow me to un-mark items as complete', async ({ page }) => {
+    // create a new todo locator
+    const newTodo = page.getByPlaceholder('What needs to be done?');
+
+    // Create two items.
+    for (const item of TODO_ITEMS.slice(0, 2)) {
+      await newTodo.fill(item);
+      await newTodo.press('Enter');
+    }
+
+    const firstTodo = page.getByTestId('todo-item').nth(0);
+    const secondTodo = page.getByTestId('todo-item').nth(1);
+    const firstTodoCheckbox = firstTodo.getByRole('checkbox');
+
+    await firstTodoCheckbox.check();
+    await expect(firstTodo).toHaveClass('completed');
+    await expect(secondTodo).not.toHaveClass('completed');
+    await checkNumberOfCompletedTodosInLocalStorage(page, 1);
+
+    await firstTodoCheckbox.uncheck();
+    await expect(firstTodo).not.toHaveClass('completed');
+    await expect(secondTodo).not.toHaveClass('completed');
+    await checkNumberOfCompletedTodosInLocalStorage(page, 0);
+  });
+
+  test('should allow me to edit an item', async ({ page }) => {
+    await createDefaultTodos(page);
+
+    const todoItems = page.getByTestId('todo-item');
+    const secondTodo = todoItems.nth(1);
+    await secondTodo.dblclick();
+    await expect(secondTodo.getByRole('textbox', { name: 'Edit' })).toHaveValue(TODO_ITEMS[1]);
+    await secondTodo.getByRole('textbox', { name: 'Edit' }).fill('buy some sausages');
+    await secondTodo.getByRole('textbox', { name: 'Edit' }).press('Enter');
+
+    // Explicitly assert the new text value.
+    await expect(todoItems).toHaveText([
+      TODO_ITEMS[0],
+      'buy some sausages',
+      TODO_ITEMS[2]
+    ]);
+    await checkTodosInLocalStorage(page, 'buy some sausages');
+  });
+});
+
+test.describe('Editing', () => {
+  test.beforeEach(async ({ page }) => {
+    await createDefaultTodos(page);
+    await checkNumberOfTodosInLocalStorage(page, 3);
+  });
+
+  test('should hide other controls when editing', async ({ page }) => {
+    const todoItem = page.getByTestId('todo-item').nth(1);
+    await todoItem.dblclick();
+    await expect(todoItem.getByRole('checkbox')).not.toBeVisible();
+    await expect(todoItem.locator('label', {
+      hasText: TODO_ITEMS[1],
+    })).not.toBeVisible();
+    await checkNumberOfTodosInLocalStorage(page, 3);
+  });
+
+  test('should save edits on blur', async ({ page }) => {
+    const todoItems = page.getByTestId('todo-item');
+    await todoItems.nth(1).dblclick();
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('buy some sausages');
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).dispatchEvent('blur');
+
+    await expect(todoItems).toHaveText([
+      TODO_ITEMS[0],
+      'buy some sausages',
+      TODO_ITEMS[2],
+    ]);
+    await checkTodosInLocalStorage(page, 'buy some sausages');
+  });
+
+  test('should trim entered text', async ({ page }) => {
+    const todoItems = page.getByTestId('todo-item');
+    await todoItems.nth(1).dblclick();
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('    buy some sausages    ');
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).press('Enter');
+
+    await expect(todoItems).toHaveText([
+      TODO_ITEMS[0],
+      'buy some sausages',
+      TODO_ITEMS[2],
+    ]);
+    await checkTodosInLocalStorage(page, 'buy some sausages');
+  });
+
+  test('should remove the item if an empty text string was entered', async ({ page }) => {
+    const todoItems = page.getByTestId('todo-item');
+    await todoItems.nth(1).dblclick();
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('');
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).press('Enter');
+
+    await expect(todoItems).toHaveText([
+      TODO_ITEMS[0],
+      TODO_ITEMS[2],
+    ]);
+  });
+
+  test('should cancel edits on escape', async ({ page }) => {
+    const todoItems = page.getByTestId('todo-item');
+    await todoItems.nth(1).dblclick();
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('buy some sausages');
+    await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).press('Escape');
+    await expect(todoItems).toHaveText(TODO_ITEMS);
+  });
+});
+
+test.describe('Counter', () => {
+  test('should display the current number of todo items', async ({ page }) => {
+    // create a new todo locator
+    const newTodo = page.getByPlaceholder('What needs to be done?');
+    
+    // create a todo count locator
+    const todoCount = page.getByTestId('todo-count')
+
+    await newTodo.fill(TODO_ITEMS[0]);
+    await newTodo.press('Enter');
+
+    await expect(todoCount).toContainText('1');
+
+    await newTodo.fill(TODO_ITEMS[1]);
+    await newTodo.press('Enter');
+    await expect(todoCount).toContainText('2');
+
+    await checkNumberOfTodosInLocalStorage(page, 2);
+  });
+});
+
+test.describe('Clear completed button', () => {
+  test.beforeEach(async ({ page }) => {
+    await createDefaultTodos(page);
+  });
+
+  test('should display the correct text', async ({ page }) => {
+    await page.locator('.todo-list li .toggle').first().check();
+    await expect(page.getByRole('button', { name: 'Clear completed' })).toBeVisible();
+  });
+
+  test('should remove completed items when clicked', async ({ page }) => {
+    const todoItems = page.getByTestId('todo-item');
+    await todoItems.nth(1).getByRole('checkbox').check();
+    await page.getByRole('button', { name: 'Clear completed' }).click();
+    await expect(todoItems).toHaveCount(2);
+    await expect(todoItems).toHaveText([TODO_ITEMS[0], TODO_ITEMS[2]]);
+  });
+
+  test('should be hidden when there are no items that are completed', async ({ page }) => {
+    await page.locator('.todo-list li .toggle').first().check();
+    await page.getByRole('button', { name: 'Clear completed' }).click();
+    await expect(page.getByRole('button', { name: 'Clear completed' })).toBeHidden();
+  });
+});
+
+test.describe('Persistence', () => {
+  test('should persist its data', async ({ page }) => {
+    // create a new todo locator
+    const newTodo = page.getByPlaceholder('What needs to be done?');
+
+    for (const item of TODO_ITEMS.slice(0, 2)) {
+      await newTodo.fill(item);
+      await newTodo.press('Enter');
+    }
+
+    const todoItems = page.getByTestId('todo-item');
+    const firstTodoCheck = todoItems.nth(0).getByRole('checkbox');
+    await firstTodoCheck.check();
+    await expect(todoItems).toHaveText([TODO_ITEMS[0], TODO_ITEMS[1]]);
+    await expect(firstTodoCheck).toBeChecked();
+    await expect(todoItems).toHaveClass(['completed', '']);
+
+    // Ensure there is 1 completed item.
+    await checkNumberOfCompletedTodosInLocalStorage(page, 1);
+
+    // Now reload.
+    await page.reload();
+    await expect(todoItems).toHaveText([TODO_ITEMS[0], TODO_ITEMS[1]]);
+    await expect(firstTodoCheck).toBeChecked();
+    await expect(todoItems).toHaveClass(['completed', '']);
+  });
+});
+
+test.describe('Routing', () => {
+  test.beforeEach(async ({ page }) => {
+    await createDefaultTodos(page);
+    // make sure the app had a chance to save updated todos in storage
+    // before navigating to a new view, otherwise the items can get lost :(
+    // in some frameworks like Durandal
+    await checkTodosInLocalStorage(page, TODO_ITEMS[0]);
+  });
+
+  test('should allow me to display active items', async ({ page }) => {
+    const todoItem = page.getByTestId('todo-item');
+    await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
+
+    await checkNumberOfCompletedTodosInLocalStorage(page, 1);
+    await page.getByRole('link', { name: 'Active' }).click();
+    await expect(todoItem).toHaveCount(2);
+    await expect(todoItem).toHaveText([TODO_ITEMS[0], TODO_ITEMS[2]]);
+  });
+
+  test('should respect the back button', async ({ page }) => {
+    const todoItem = page.getByTestId('todo-item'); 
+    await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
+
+    await checkNumberOfCompletedTodosInLocalStorage(page, 1);
+
+    await test.step('Showing all items', async () => {
+      await page.getByRole('link', { name: 'All' }).click();
+      await expect(todoItem).toHaveCount(3);
+    });
+
+    await test.step('Showing active items', async () => {
+      await page.getByRole('link', { name: 'Active' }).click();
+    });
+
+    await test.step('Showing completed items', async () => {
+      await page.getByRole('link', { name: 'Completed' }).click();
+    });
+
+    await expect(todoItem).toHaveCount(1);
+    await page.goBack();
+    await expect(todoItem).toHaveCount(2);
+    await page.goBack();
+    await expect(todoItem).toHaveCount(3);
+  });
+
+  test('should allow me to display completed items', async ({ page }) => {
+    await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
+    await checkNumberOfCompletedTodosInLocalStorage(page, 1);
+    await page.getByRole('link', { name: 'Completed' }).click();
+    await expect(page.getByTestId('todo-item')).toHaveCount(1);
+  });
+
+  test('should allow me to display all items', async ({ page }) => {
+    await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
+    await checkNumberOfCompletedTodosInLocalStorage(page, 1);
+    await page.getByRole('link', { name: 'Active' }).click();
+    await page.getByRole('link', { name: 'Completed' }).click();
+    await page.getByRole('link', { name: 'All' }).click();
+    await expect(page.getByTestId('todo-item')).toHaveCount(3);
+  });
+
+  test('should highlight the currently applied filter', async ({ page }) => {
+    await expect(page.getByRole('link', { name: 'All' })).toHaveClass('selected');
+    
+    //create locators for active and completed links
+    const activeLink = page.getByRole('link', { name: 'Active' });
+    const completedLink = page.getByRole('link', { name: 'Completed' });
+    await activeLink.click();
+
+    // Page change - active items.
+    await expect(activeLink).toHaveClass('selected');
+    await completedLink.click();
+
+    // Page change - completed items.
+    await expect(completedLink).toHaveClass('selected');
+  });
+});
+
+async function createDefaultTodos(page: Page) {
+  // create a new todo locator
+  const newTodo = page.getByPlaceholder('What needs to be done?');
+
+  for (const item of TODO_ITEMS) {
+    await newTodo.fill(item);
+    await newTodo.press('Enter');
+  }
+}
+
+async function checkNumberOfTodosInLocalStorage(page: Page, expected: number) {
+  return await page.waitForFunction(e => {
+    return JSON.parse(localStorage['react-todos']).length === e;
+  }, expected);
+}
+
+async function checkNumberOfCompletedTodosInLocalStorage(page: Page, expected: number) {
+  return await page.waitForFunction(e => {
+    return JSON.parse(localStorage['react-todos']).filter((todo: any) => todo.completed).length === e;
+  }, expected);
+}
+
+async function checkTodosInLocalStorage(page: Page, title: string) {
+  return await page.waitForFunction(t => {
+    return JSON.parse(localStorage['react-todos']).map((todo: any) => todo.title).includes(t);
+  }, title);
+}

tests/e2e/dashboard.spec.ts

@@ -0,0 +1,14 @@
+import {expect, test} from "@playwright/test";
+
+test('dashboard renders', async ({page}) => {
+  await page.goto('http://localhost:3000/');
+
+  await page.getByRole('link', { name: 'Dashboard'}).click();
+
+  // Expect a title "to contain" a substring.
+  await expect(page).toHaveURL('http://localhost:3000/dashboard');
+
+  await expect(page.locator('h1')).toHaveText('Hello, Next.js!');
+
+  await expect(page.locator('div').first()).toHaveText('Dummy Component');
+})

tests/e2e/example.spec.ts

@@ -0,0 +1,18 @@
+import { test, expect } from '@playwright/test';
+
+test('has title', async ({ page }) => {
+  await page.goto('https://playwright.dev/');
+
+  // Expect a title "to contain" a substring.
+  await expect(page).toHaveTitle(/Playwright/);
+});
+
+test('get started link', async ({ page }) => {
+  await page.goto('https://playwright.dev/');
+
+  // Click the get started link.
+  await page.getByRole('link', { name: 'Get started' }).click();
+
+  // Expects page to have a heading with the name of Installation.
+  await expect(page.getByRole('heading', { name: 'Installation' })).toBeVisible();
+});