def get_stats_result(self, request):
        """Return the StatsResult object for this statistic"""
        stats_datasets = StatsMakerDataverses(**request.GET.dict())

        pub_state = self.get_pub_state(request)

        if pub_state == self.PUB_STATE_ALL:
            stats_result = stats_datasets.get_dataverse_affiliation_counts()
        elif pub_state == self.PUB_STATE_UNPUBLISHED:
            stats_result = stats_datasets.get_dataverse_affiliation_counts_unpublished()
        else:
            stats_result = stats_datasets.get_dataverse_affiliation_counts_published()

        return stats_result
def test_invalid_isointerval_error():
    try:
        inputs.iso8601interval('2013-01-01/blah')
    except ValueError as error:
        assert_equal(
            str(error),
            "Invalid argument: 2013-01-01/blah. argument must be a valid ISO8601 "
            "date/time interval.",
        )
        return
    assert False, 'Should raise a ValueError'