if a.isSocketFree(socket) {
			free = append(free, socket)
		}
	}
	return free
}

// Returns free core IDs as a slice sorted by sortAvailableCores().
func (a *cpuAccumulator) freeCores() []int {
	free := []int{}
	for _, core := range a.sortAvailableCores() {
		if a.isCoreFree(core) {
			free = append(free, core)
		}
	}
	return free
}

			[]int{2, 4, 3, 5},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.description, func(t *testing.T) {
			acc := newCPUAccumulator(tc.topo, tc.availableCPUs, 0)
			result := acc.freeCores()
			if !reflect.DeepEqual(result, tc.expect) {
				t.Errorf("expected %v to equal %v", result, tc.expect)
			}
		})
	}
}

func TestCPUAccumulatorFreeCPUs(t *testing.T) {
	testCases := []struct {