def METHOD_NAME(self, backend):
    info = binascii.unhexlify(b"f0f1f2f3f4f5f6f7f8f9")
    hkdf = HKDFExpand(hashes.SHA256(), 42, info, backend)
    with pytest.raises(TypeError):
        hkdf.derive("first")  # type: ignore[arg-type]