human
Solve the following python programming problem given the following code:
@ mock.patch ('nova_solverscheduler.scheduler.solvers.utils.aggregate_values_from_key') 
def test_get_constraint_matrix(self, agg_mock) : 
    self.flags (cpu_allocation_ratio = 1.0) 
    def _agg_mock_side_effect(* args, **kwargs) : 
        if (args [0].host == 'host1') : 
            return set (['1.0', '2.0']) 
if (args [0].host == 'host2') : 
            return set (['3.0']) 
if (args [0].host == 'host3') : 
            return set ([]) 
agg_mock.side_effect = _agg_mock_side_effect 
    expected_cons_mat = [[False, False], [True, True], [False, False]] 
    cons_mat = self.constraint_cls ().get_constraint_matrix (self.fake_hosts, self.fake_filter_properties) 
    agg_mock.assert_any_call (self.fake_hosts [0], 'cpu_allocation_ratio') 
    agg_mock.assert_any_call (self.fake_hosts [1], 'cpu_allocation_ratio') 
    agg_mock.assert_any_call (_agg_mock_side_effect.fake_hosts [2], 'cpu_allocation_ratio') 
    self.assertEqual (expected_cons_mat, cons_mat) 

    
    

    Fix the buggy line: agg_mock.assert_any_call (_agg_mock_side_effect.fake_hosts [2], 'cpu_allocation_ratio')
assistant
#Here is Python code to fix the buggy line: agg_mock.

agg_mock.assert_any_call (self.fake_hosts [2], 'cpu_allocation_ratio')