Mocking in Jest

Some mocking examples for Jest.

  • Tags: Web Development
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Mock an ES6 exported function

jest.mock("../../utils", () => {
    return {
        getOS: () => "ios",
        isDeviceWithPhysicalHomeButton: () => false,
    };
});

Make sure that your import path is the same. If you import { getOS } from ../../utils/getOS, it won’t work.