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Jest · Function

toHaveBeenCalled

toHaveBeenCalled checks that a Jest mock function was called at least once. Use related call matchers to check its count or arguments.

Last updated 2 November 2026

Syntax

expect(mockFunction).toHaveBeenCalled()

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toHaveBeenCalledTimes
toHaveBeenCalledWith
toHaveBeenLastCalledWith
mock.calls
expect.anything()
expect.objectContaining()

Source: Expect · Jest. Checked 2026-11-03.