def METHOD_NAME(self):
    self.write_data()
    subhandlers = dict([list(handlers.items())[0]])
    with pytest.raises(errors.RequiredChksumDataMissing):
        self.fetcher._verify(self.fp, self.obj, handlers=subhandlers)
    self.fetcher._verify(self.fp, self.obj)
    assert None == self.fetcher._verify(
        self.fp, self.obj, handlers=subhandlers, all_chksums=False
    )