All mock functions have this special .mock property, which is where data about how the function has been called and what the function returned is kept. The .mock property also tracks the value of this for each call, so it is possible to inspect this as well: const myMock = jest.fn()Used React Hooks to have more constructional components in most cases; LESS, CSS3; Experienced Simulating Web-Services with NodeJS and Express for UI developers like the real one, because of the Bank security; Used Enzyme, Jest to have a full TDD implementation; Reach 99.02% TDD code coverage over 90% expected where no snapshot testing permitted
[jest-mock] Fix typings for mockResolvedValue, mockResolvedValueOnce, mockRejectedValue and [jest-config, jest-reporter, jest-runner, jest-test-sequencer] Add slowTestThreshold configuration [jest-worker] Added support for workers to send custom messages to parent in jest-worker (#10293).
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