def METHOD_NAME(num_costs):
    cost_low = 1
    cost_high = 100
    dims = 2
    costs = []
    for i in range(num_costs):
        costs.append(list(np.random.randint(cost_low, cost_high, size=(dims,))))
    reference = list(_ref_get_pareto_frontier(np.array(costs)))
    result = _get_pareto_frontier(costs)
    assert result == reference