Cloud, Operations & Licences Testing & Quality

24. Modern Testing Architecture: Vitest & Playwright

Build a rock-solid test suite: ultra-fast unit testing with Vitest, accessible component testing, and resilient browser-driven end-to-end testing with Playwright.

testing.ts

typescript

// vitest.config.ts & Test Harness
import { defineConfig } from 'vitest/config';
export default defineConfig({
  test: {
    environment: 'jsdom',
    include: ['src/**/*.test.ts'],
    globals: true
  }
});
// Sample Unit & Integration Test
// import { describe, it, expect } from 'vitest';
// describe('Math.sumPrecise', () => {
//   it('accurately accumulates floating points', () => {
//     expect(Math.sumPrecise([0.1, 0.2, 0.3, -0.6])).toBe(0.0);
//   });
// });

Modern Testing Architecture: Vitest & Playwright

A comprehensive testing pyramid combines instantaneous unit testing with Vitest, accessible component testing, and deterministic end-to-end browser automation with Playwright.

Vitest: Native Vite-powered test runner sharing the exact same plugins, TypeScript configurations, and transforms with zero config duplication.
Component Testing: Renders real Svelte 5 Runes components in JSDOM / Happy-DOM to assert accessibility roles, keyboard interactions, and event emissions.
Playwright E2E: Drives real Chromium, Firefox, and WebKit browsers in headless mode to validate user flows and view transitions.

Integrated Test Runner Simulator Vitest + Playwright

Execute Full Test Harness:

Test Suite: 6 Specs (Unit, Component, E2E) IDLE

Press "Run Test Suite" to execute simulated Vitest & Playwright specs.

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