client/setupTests.ts

import "@testing-library/jest-dom";
import { vi } from "vitest";

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

class ResizeObserverMock {
  observe = vi.fn();
  unobserve = vi.fn();
  disconnect = vi.fn();
}

vi.stubGlobal("ResizeObserver", ResizeObserverMock);

class IntersectionObserverMock {
  root = null;
  rootMargin = "";
  thresholds = [];
  observe = vi.fn();
  unobserve = vi.fn();
  disconnect = vi.fn();
  takeRecords = vi.fn().mockReturnValue([]);
}

vi.stubGlobal("IntersectionObserver", IntersectionObserverMock);