test_search.py 文件源码

def test_trivial_grid_scores():
    # Test search over a "grid" with only one point.
    # Non-regression test: grid_scores_ wouldn't be set by GridSearchCV.
    clf = MockClassifier()
    grid_search = GridSearchCV(clf, {'foo_param': [1]})
    grid_search.fit(X, y)
    assert_true(hasattr(grid_search, "grid_scores_"))

    random_search = RandomizedSearchCV(clf, {'foo_param': [0]}, n_iter=1)
    random_search.fit(X, y)
    assert_true(hasattr(random_search, "grid_scores_"))