jest-mock-cheet-sheet Getting Started yarn yarn test Recipes Class Private Field & readonly Date setSystemTime Exported Modules Default Export(jest.spyOn) Default Export(jest.requireActual) Named Export(jest.spyOn) Named Export(jest.requireActual) Global console.log Math.rand process.env Jest Features Mock jest.mock() __mocks__ directory jest.doMock(), jest.dontMock() jest.requireActual() jest.unmock() Spy jest.spyOn() Init Mocks jest.mockClear jest.mockReset jest.mockRestore JestFn jest.fn()