Jest · Module
mockReturnValueOnce
mockReturnValueOnce(value) makes a Jest mock return a chosen value for one call. Chain it for a sequence, then use mockReturnValue(value) as the fallback.
Last updated
Syntax
mockFn.mockReturnValueOnce(value)In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.
SubscribeRelated
jest.fn()mockFn.mockImplementation()mockFn.mockImplementationOnce()mockFn.mockResolvedValue()mockFn.mockResolvedValueOnce()mockFn.mock.calls