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Jest · Module

hasAssertions

expect.hasAssertions() makes a Jest test fail unless at least one assertion runs. It is useful for checking that assertions inside asynchronous callbacks are actually reached.

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Syntax

expect.hasAssertions()

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  • expect.assertions(number)
  • expect(value)
  • toBeTruthy()

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