tests.setup.ts

import "@testing-library/jest-dom/vitest";
import { cleanup } from "@testing-library/react";
import { afterEach } from "vitest";

Object.defineProperty(window, "matchMedia", {
  writable: true,
  value: vi.fn().mockImplementation((query) => ({
    matches: false,
    media: query,
    onchange: null,
    addListener: vi.fn(), // deprecated
    removeListener: vi.fn(), // deprecated
    addEventListener: vi.fn(),
    removeEventListener: vi.fn(),
    dispatchEvent: vi.fn(),
  })),
});

// runs a cleanup after each test case (e.g. clearing jsdom)
afterEach(() => {
  cleanup();
});