58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
/**
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* Copyright 2023, XGBoost Contributors
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*/
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#include <gtest/gtest.h>
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#include <xgboost/json.h> // for Json
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#include <xgboost/tree_model.h> // for RegTree
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#include "../../../../src/tree/hist/expand_entry.h"
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namespace xgboost::tree {
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TEST(ExpandEntry, IO) {
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CPUExpandEntry entry{RegTree::kRoot, 0};
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entry.split.Update(1.0, 1, /*new_split_value=*/0.3, true, true, GradStats{1.0, 1.0},
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GradStats{2.0, 2.0});
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bst_bin_t n_bins_feature = 256;
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auto n = common::CatBitField::ComputeStorageSize(n_bins_feature);
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entry.split.cat_bits = decltype(entry.split.cat_bits)(n, 0);
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common::CatBitField cat_bits{entry.split.cat_bits};
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cat_bits.Set(n_bins_feature / 2);
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Json je{Object{}};
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entry.Save(&je);
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CPUExpandEntry loaded;
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loaded.Load(je);
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ASSERT_EQ(loaded.split.is_cat, entry.split.is_cat);
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ASSERT_EQ(loaded.split.cat_bits, entry.split.cat_bits);
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ASSERT_EQ(loaded.split.left_sum.GetGrad(), entry.split.left_sum.GetGrad());
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ASSERT_EQ(loaded.split.right_sum.GetHess(), entry.split.right_sum.GetHess());
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}
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TEST(ExpandEntry, IOMulti) {
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MultiExpandEntry entry{RegTree::kRoot, 0};
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auto left_sum = std::vector<GradientPairPrecise>{{1.0, 1.0}, {1.0, 1.0}};
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auto right_sum = std::vector<GradientPairPrecise>{{2.0, 2.0}, {2.0, 2.0}};
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entry.split.Update(1.0, 1, /*new_split_value=*/0.3, true, true,
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linalg::MakeVec(left_sum.data(), left_sum.size()),
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linalg::MakeVec(right_sum.data(), right_sum.size()));
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bst_bin_t n_bins_feature = 256;
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auto n = common::CatBitField::ComputeStorageSize(n_bins_feature);
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entry.split.cat_bits = decltype(entry.split.cat_bits)(n, 0);
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common::CatBitField cat_bits{entry.split.cat_bits};
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cat_bits.Set(n_bins_feature / 2);
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Json je{Object{}};
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entry.Save(&je);
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MultiExpandEntry loaded;
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loaded.Load(je);
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ASSERT_EQ(loaded.split.is_cat, entry.split.is_cat);
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ASSERT_EQ(loaded.split.cat_bits, entry.split.cat_bits);
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ASSERT_EQ(loaded.split.left_sum, entry.split.left_sum);
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ASSERT_EQ(loaded.split.right_sum, entry.split.right_sum);
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}
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} // namespace xgboost::tree
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