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AvocadoVenom/window.mock.ts

Created July 12, 2022 07:32
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window.mock.ts
// 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,
addEventListener: jest.fn(),
removeEventListener: jest.fn(),
dispatchEvent: jest.fn()
}))
})
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