How to mock navigator.clipboard.writeText() in Jest?
Jest tests are running in JSdom environment and not all of the properties are defined, but so you should define the function before spying on it. Here is an example: const writeText = jest.fn() Object.assign(navigator, { clipboard: { writeText, }, }); describe(“Clipboard”, () => { describe(“writeText”, () => { beforeAll(() => { navigator.clipboard.writeText.mockResolvedValue(undefined) // or … Read more