def test_regressor_custom_cascade_layer_workflow_in_memory(y_train): model = CascadeForestRegressor() n_estimators = 4 estimators = [DecisionTreeRegressor() for _ in range(n_estimators)] model.set_estimator(estimators) # set custom base estimators predictor = DecisionTreeRegressor() model.set_predictor(predictor) model.fit(X_train_reg, y_train) y_pred_before = model.predict(X_test_reg) # Save and Reload model.save(save_dir) model = CascadeForestRegressor() model.load(save_dir) # Predictions after loading y_pred_after = model.predict(X_test_reg) # Make sure the same predictions before and after model serialization assert_array_equal(y_pred_before, y_pred_after) assert (model.get_estimator(0, 0, "custom") is model._get_layer(0).estimators_["0-0-custom"].estimator_) model.clean() # clear the buffer shutil.rmtree(save_dir)
def test_model_properties_after_fitting(): """Check the model properties after fitting a deep forest model.""" model = CascadeForestRegressor(**toy_kwargs) model.fit(X_train, y_train) assert len(model) == model.n_layers_ assert model[0] is model._get_layer(0) with pytest.raises(ValueError) as excinfo: model._get_layer(model.n_layers_) assert "The layer index should be in the range" in str(excinfo.value) with pytest.raises(RuntimeError) as excinfo: model._set_layer(0, None) assert "already exists in the internal container" in str(excinfo.value) with pytest.raises(ValueError) as excinfo: model._get_binner(model.n_layers_ + 1) assert "The binner index should be in the range" in str(excinfo.value) with pytest.raises(RuntimeError) as excinfo: model._set_binner(0, None) assert "already exists in the internal container" in str(excinfo.value)