MailSend/test/ui/setup.ts

import { afterEach } from 'vitest';
import { cleanup } from '@testing-library/react';

afterEach(() => cleanup());

function createStorage(): Storage {
  const values = new Map<string, string>();
  return {
    get length() { return values.size; },
    clear: () => values.clear(),
    getItem: (key) => values.get(key) ?? null,
    key: (index) => Array.from(values.keys())[index] ?? null,
    removeItem: (key) => values.delete(key),
    setItem: (key, value) => values.set(key, String(value))
  };
}

Object.defineProperty(window, 'localStorage', { configurable: true, value: createStorage() });
Object.defineProperty(window, 'sessionStorage', { configurable: true, value: createStorage() });

Object.defineProperty(window, 'matchMedia', {
  writable: true,
  value: (query: string) => ({
    matches: false,
    media: query,
    onchange: null,
    addListener: () => undefined,
    removeListener: () => undefined,
    addEventListener: () => undefined,
    removeEventListener: () => undefined,
    dispatchEvent: () => false
  })
});

class ResizeObserverStub {
  observe() {}
  unobserve() {}
  disconnect() {}
}

Object.defineProperty(window, 'ResizeObserver', { writable: true, value: ResizeObserverStub });
Object.defineProperty(globalThis, 'ResizeObserver', { writable: true, value: ResizeObserverStub });

const getComputedStyle = window.getComputedStyle.bind(window);
window.getComputedStyle = (element: Element) => getComputedStyle(element);

if (!window.requestAnimationFrame) {
  window.requestAnimationFrame = (callback) => window.setTimeout(callback, 0);
  window.cancelAnimationFrame = (id) => window.clearTimeout(id);
}