import { describe, it, expect } from 'vitest';

describe('Vitest infrastructure', () => {
  it('runs assertions', () => {
    expect(1 + 1).toBe(2);
  });

  it('exposes the jsdom document', () => {
    const div = document.createElement('div');
    div.id = 'sanity';
    document.body.appendChild(div);
    expect(document.getElementById('sanity')).toBe(div);
  });

  it('supports Shadow DOM API in jsdom', () => {
    const host = document.createElement('div');
    document.body.appendChild(host);
    const shadow = host.attachShadow({ mode: 'open' });
    expect(host.shadowRoot).toBe(shadow);
  });
});