Visual Regression Setup

visual-regression-setup

Configure visual regression testing for desktop applications to catch unintended UI changes.

Capabilities

• Configure Percy integration
• Set up Chromatic for Storybook
• Custom screenshot comparison
• Configure threshold settings
• Handle dynamic content masking
• Set up CI/CD integration

Input Schema

{
  "type": "object",
  "properties": {
    "projectPath": { "type": "string" },
    "provider": { "enum": ["percy", "chromatic", "reg-suit", "custom"] },
    "framework": { "enum": ["playwright", "cypress", "puppeteer"] }
  },
  "required": ["projectPath"]
}

Percy Integration

// playwright.config.js
import { defineConfig } from '@playwright/test';

export default defineConfig({
  use: {
    screenshot: 'only-on-failure'
  }
});

// test.spec.js
import { test } from '@playwright/test';
import percySnapshot from '@percy/playwright';

test('visual test', async ({ page }) => {
  await page.goto('/');
  await percySnapshot(page, 'Home page');
});

Custom Comparison

const { toMatchImageSnapshot } = require('jest-image-snapshot');
expect.extend({ toMatchImageSnapshot });

test('matches screenshot', async () => {
  const screenshot = await page.screenshot();
  expect(screenshot).toMatchImageSnapshot({
    failureThreshold: 0.01,
    failureThresholdType: 'percent'
  });
});

Related Skills

• playwright-electron-config
• desktop-ui-testing process