Method TestInitAfterLoad

tests/cpp/test_learner.cc:541–567

  }

  void TestInitAfterLoad() {
    std::unique_ptr<Learner> learner{Learner::Create({Xy_})};
    learner->SetParam("objective", "reg:absoluteerror");
    learner->Configure();

    Json model{Object{}};
    learner->SaveModel(&model);
    auto base_score = GetBaseScore(model);
    ASSERT_EQ(base_score.size(), 1);
    ASSERT_FALSE(std::isnan(base_score[0]));
    ASSERT_EQ(base_score[0], ObjFunction::DefaultBaseScore());

    learner.reset(Learner::Create({Xy_}));
    learner->LoadModel(model);
    Json config(Object{});
    learner->Configure();
    learner->SaveConfig(&config);
    base_score = GetBaseScore(config);
    ASSERT_EQ(base_score[0], ObjFunction::DefaultBaseScore());

    learner->UpdateOneIter(0, Xy_);
    learner->SaveConfig(&config);
    base_score = GetBaseScore(config);
    ASSERT_EQ(base_score.size(), 1);
    ASSERT_FALSE(std::isnan(base_score[0]));
    ASSERT_NE(base_score[0], ObjFunction::DefaultBaseScore());
  }

  void TestInitWithPredt() {
    std::unique_ptr<Learner> learner{Learner::Create({Xy_})};