Function test_run_basic_search

hyperopt/tests/unit/test_atpe_basic.py:9–37

()

def test_run_basic_search():
    def objective(args):
        case, val = args
        if case == "case 1":
            return val
        else:
            return val ** 2

    # define a search space
    space = hp.choice(
        "a",
        [
            ("case 1", 1 + hp.lognormal("c1", 0, 1)),
            ("case 2", hp.uniform("c2", -10, 10)),
        ],
    )

    # minimize the objective over the space
    # NOTE: Max evals should be greater than 10, as the first 10 runs are only the initialization rounds
    best = fmin(
        objective,
        space,
        algo=atpe.suggest,
        max_evals=20,
        rstate=np.random.default_rng(1),
    )

    assert best["a"] == 1
    assert space_eval(space, best)[0] == "case 2"