ทดสอบ Performance ฝั่ง Client-Side ด้วย Playwright

npm install --save-dev lighthouse playwright-lighthouse

import * as path from 'path';
import type { PlaywrightTestConfig } from '@playwright/test';
import { devices } from '@playwright/test';

const config: PlaywrightTestConfig = {
  testDir: './tests',
  /* Maximum time one test can run for. */
  timeout: 30 * 1000,
  expect: {
    timeout: 5000
  },
  /* 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: {
    actionTimeout: 0,
    trace: 'on-first-retry',
    headless: false,
    permissions: ['camera'],
    channel: 'chromium',
    ...devices['Desktop Chrome'],
    launchOptions: {
      args: [
        // LIGHTHOUSE
        '--remote-debugging-port=9222', 
      ],
    },
  },
};

export default config;

import { expect, test } from '@playwright/test';
import { playAudit } from 'playwright-lighthouse';

test('able to check client side performance testing', async ({ page }) => {
  await page.goto('https://demoqa.com');

  test.setTimeout(0);
  await playAudit({
    page: page,
    port: 9222,
    thresholds: {
      performance: 20,
      accessibility: 20,
      'best-practices': 20,
    },
    reports: {
      formats: {
        html: true,
        csv: true,
      }
    }
  });
});

import { expect, test } from '@playwright/test';
import { playAudit } from 'playwright-lighthouse';

const os = require('os');
const fs = require('fs');
const path = require('path');
const appPrefix = 'pl-lh';

test('able to check client side performance testing', async ({ playwright }) => {
  let tmpDir = os.tmpdir();
  tmpDir = fs.mkdtempSync(path.join(tmpDir, appPrefix));
  const context = await playwright['chromium'].launchPersistentContext(tmpDir, {
    args: ['--remote-debugging-port=9222'],
    headless: false
  });

  const page = await context.newPage();

  await page.goto('https://demoqa.com/login');
  await page.fill('id=userName', 'demoqahive');
  await page.fill('id=password', 'T@stpw120');
  await Promise.all([
    page.waitForNavigation(),
    page.click('id=login')
  ]);
  expect(page.locator('id=userName-label').nth(0)).toBeVisible();
  
  test.setTimeout(0);
  await playAudit({
    page: page,
    port: 9222,
    thresholds: {
      performance: 20,
      accessibility: 20,
      'best-practices': 20,
    },
    reports: {
      formats: {
        html: true,
        csv: true,
      }
    }
  });
});