Add Playwright support for Task List

examples/task-list/package.json

@@ -21,6 +21,7 @@
   },
   "homepage": "https://github.com/stevekinney/testing-javascript#readme",
   "devDependencies": {
+    "@playwright/test": "^1.47.2",
     "@testing-library/dom": "^10.4.0",
     "@testing-library/jest-dom": "^6.5.0",
     "@testing-library/react": "^16.0.1",
@@ -39,7 +40,8 @@
     "tailwind-merge": "^2.5.2",
     "uuid": "^10.0.0",
     "vite": "^5.4.6",
-    "vitest": "^2.1.1"
+    "vitest": "^2.1.1",
+    "wait-port": "^1.1.0"
   },
   "dependencies": {
     "body-parser": "^1.20.3",

examples/task-list/playwright.config.js

@@ -0,0 +1,78 @@
+// @ts-check
+import { defineConfig, devices } from '@playwright/test';
+
+/**
+ * Read environment variables from file.
+ * https://github.com/motdotla/dotenv
+ */
+// require('dotenv').config({ path: path.resolve(__dirname, '.env') });
+
+/**
+ * @see https://playwright.dev/docs/test-configuration
+ */
+export default defineConfig({
+  testDir: './tests',
+  /* 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,
+  // },
+});

examples/task-list/server/index.js

@@ -1,3 +1,4 @@
+import * as url from 'node:url';
 import express from 'express';
 import bodyParser from 'body-parser';
 import chalk from 'chalk';
@@ -59,7 +60,16 @@ app.delete('/api/tasks/:id', (req, res) => {
   res.sendStatus(204); // No content to send back
 });
 
-const PORT = process.env.PORT || 3000;
-app.listen(PORT, () => {
-  console.log(chalk.magenta(`Server is running on port ${chalk.green(PORT)}…`));
-});
+if (import.meta.url.startsWith('file:')) {
+  const modulePath = url.fileURLToPath(import.meta.url);
+  if (process.argv[1] === modulePath) {
+    const PORT = process.env.PORT || 3000;
+    app.listen(PORT, () => {
+      console.log(
+        chalk.magenta(`Server is running on port ${chalk.green(PORT)}…`),
+      );
+    });
+  }
+}
+
+export default app;

examples/task-list/tests/task-list.spec.js

@@ -0,0 +1,22 @@
+import { test, expect } from '@playwright/test';
+
+/** @type {import('../start-server').DevelopmentServer} */
+test.beforeEach(async ({ page }) => {
+  await page.goto('http://localhost:5173');
+});
+
+test('it should load the page', async ({ page }) => {
+  await expect(page).toHaveTitle('Task List');
+});
+
+test('it should add a task', async ({ page }) => {
+  const input = page.getByLabel('Create Task');
+  const submit = page.getByRole('button', { name: 'Create Task' });
+
+  await input.fill('Learn Playwright');
+  await submit.click();
+
+  const heading = await page.getByRole('heading', { name: 'Learn Playwright' });
+
+  await expect(heading).toBeVisible();
+});