2048-nextjs/jest.setup.js at master · ausare-dev/2048-nextjs · GitHub

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// Learn more: https://github.com/testing-library/jest-dom
import '@testing-library/jest-dom';

// Mock window.matchMedia
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(),
	})),
});

// Mock localStorage
const localStorageMock = {
	getItem: jest.fn(),
	setItem: jest.fn(),
	removeItem: jest.fn(),
	clear: jest.fn(),
};
global.localStorage = localStorageMock;

// Mock sessionStorage
const sessionStorageMock = {
	getItem: jest.fn(),
	setItem: jest.fn(),
	removeItem: jest.fn(),
	clear: jest.fn(),
};
global.sessionStorage = sessionStorageMock;