def METHOD_NAME(self):
    '''Test usage difficulty filter on infrastructure'''
    data = {
        'usage_difficulty': [self.usage_level_1.pk]
    }
    qs = InfrastructureFilterSet(data=data).qs
    self.assertIn(self.infra_u1, qs)
    self.assertIn(self.infra_u1_m2, qs)
    self.assertNotIn(self.infra_u2_m3, qs)
    self.assertNotIn(self.infra_m2, qs)