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Vitest · Module

rejects

expect(promise).rejects checks the reason for a rejected promise. Await the matcher because the assertion is asynchronous.

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Syntax

await expect(promise).rejects.toThrow(expected)

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  • expect
  • resolves
  • toThrow
  • toThrowError
  • expect.assertions

Source: expect | Vitest. Checked 2026-11-03.