64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
// Copyright (c) 2019 by Contributors
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#include <gtest/gtest.h>
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#include <xgboost/data.h>
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#include "../../../src/data/adapter.h"
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#include "../../../src/data/simple_dmatrix.h"
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#include "../../../src/common/timer.h"
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#include "../helpers.h"
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using namespace xgboost; // NOLINT
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TEST(c_api, CSRAdapter) {
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int m = 3;
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int n = 2;
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std::vector<float> data = {1, 2, 3, 4, 5};
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std::vector<unsigned> feature_idx = {0, 1, 0, 1, 1};
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std::vector<size_t> row_ptr = {0, 2, 4, 5};
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data::CSRAdapter adapter(row_ptr.data(), feature_idx.data(), data.data(),
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row_ptr.size() - 1, data.size(), n);
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adapter.Next();
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auto & batch = adapter.Value();
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auto line0 = batch.GetLine(0);
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EXPECT_EQ(line0.GetElement(0).value, 1);
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EXPECT_EQ(line0.GetElement(1).value, 2);
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auto line1 = batch.GetLine(1);
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EXPECT_EQ(line1 .GetElement(0).value, 3);
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EXPECT_EQ(line1 .GetElement(1).value, 4);
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auto line2 = batch.GetLine(2);
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EXPECT_EQ(line2 .GetElement(0).value, 5);
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EXPECT_EQ(line2 .GetElement(0).row_idx, 2);
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EXPECT_EQ(line2 .GetElement(0).column_idx, 1);
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}
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TEST(c_api, CSCAdapterColsMoreThanRows) {
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std::vector<float> data = {1, 2, 3, 4, 5, 6, 7, 8};
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std::vector<unsigned> row_idx = {0, 1, 0, 1, 0, 1, 0, 1};
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std::vector<size_t> col_ptr = {0, 2, 4, 6, 8};
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// Infer row count
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data::CSCAdapter adapter(col_ptr.data(), row_idx.data(), data.data(), 4, 0);
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data::SimpleDMatrix dmat(&adapter, std::numeric_limits<float>::quiet_NaN(), -1);
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EXPECT_EQ(dmat.Info().num_col_, 4);
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EXPECT_EQ(dmat.Info().num_row_, 2);
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EXPECT_EQ(dmat.Info().num_nonzero_, 8);
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auto &batch = *dmat.GetBatches<SparsePage>().begin();
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auto inst = batch[0];
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EXPECT_EQ(inst[0].fvalue, 1);
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EXPECT_EQ(inst[0].index, 0);
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EXPECT_EQ(inst[1].fvalue, 3);
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EXPECT_EQ(inst[1].index, 1);
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EXPECT_EQ(inst[2].fvalue, 5);
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EXPECT_EQ(inst[2].index, 2);
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EXPECT_EQ(inst[3].fvalue, 7);
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EXPECT_EQ(inst[3].index, 3);
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inst = batch[1];
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EXPECT_EQ(inst[0].fvalue, 2);
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EXPECT_EQ(inst[0].index, 0);
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EXPECT_EQ(inst[1].fvalue, 4);
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EXPECT_EQ(inst[1].index, 1);
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EXPECT_EQ(inst[2].fvalue, 6);
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EXPECT_EQ(inst[2].index, 2);
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EXPECT_EQ(inst[3].fvalue, 8);
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EXPECT_EQ(inst[3].index, 3);
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}
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