vega-frontend-monorepo/libs/market-depth/src/setup-tests.ts

import '@testing-library/jest-dom';
import 'jest-canvas-mock';

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

Object.defineProperty(window, 'ResizeObserver', {
  writable: false,
  value: jest.fn().mockImplementation(() => ({
    observe: jest.fn(),
    unobserve: jest.fn(),
    connect: jest.fn(),
    disconnect: jest.fn(),
  })),
});