setup-jest.js

require('jest-fetch-mock').enableMocks();

// This is necessary due to lack of implementation in JSDOM.
// Check this link for more information : https://jestjs.io/docs/manual-mocks#mocking-methods-which-are-not-implemented-in-jsdom
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(),
	})),
});