70d208d68c
* DMatrix refactor 2 * Remove buffered rowset usage where possible * Transition to c++11 style iterators for row access * Transition column iterators to C++ 11
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
// Copyright by Contributors
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#include <xgboost/data.h>
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#include "../../../src/data/simple_dmatrix.h"
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#include "../helpers.h"
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TEST(SimpleDMatrix, MetaInfo) {
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std::string tmp_file = CreateSimpleTestData();
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xgboost::DMatrix * dmat = xgboost::DMatrix::Load(tmp_file, true, false);
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std::remove(tmp_file.c_str());
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// Test the metadata that was parsed
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EXPECT_EQ(dmat->Info().num_row_, 2);
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EXPECT_EQ(dmat->Info().num_col_, 5);
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EXPECT_EQ(dmat->Info().num_nonzero_, 6);
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EXPECT_EQ(dmat->Info().labels_.Size(), dmat->Info().num_row_);
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delete dmat;
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}
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TEST(SimpleDMatrix, RowAccess) {
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std::string tmp_file = CreateSimpleTestData();
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xgboost::DMatrix * dmat = xgboost::DMatrix::Load(tmp_file, false, false);
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std::remove(tmp_file.c_str());
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// Loop over the batches and count the records
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long row_count = 0;
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for (auto &batch : dmat->GetRowBatches()) {
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row_count += batch.Size();
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}
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EXPECT_EQ(row_count, dmat->Info().num_row_);
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// Test the data read into the first row
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auto &batch = *dmat->GetRowBatches().begin();
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auto first_row = batch[0];
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ASSERT_EQ(first_row.size(), 3);
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EXPECT_EQ(first_row[2].index, 2);
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EXPECT_EQ(first_row[2].fvalue, 20);
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delete dmat;
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}
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TEST(SimpleDMatrix, ColAccessWithoutBatches) {
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std::string tmp_file = CreateSimpleTestData();
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xgboost::DMatrix * dmat = xgboost::DMatrix::Load(tmp_file, true, false);
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std::remove(tmp_file.c_str());
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// Sorted column access
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EXPECT_EQ(dmat->GetColDensity(0), 1);
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EXPECT_EQ(dmat->GetColDensity(1), 0.5);
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ASSERT_TRUE(dmat->SingleColBlock());
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// Loop over the batches and assert the data is as expected
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long num_col_batch = 0;
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for (const auto &batch : dmat->GetSortedColumnBatches()) {
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num_col_batch += 1;
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EXPECT_EQ(batch.Size(), dmat->Info().num_col_)
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<< "Expected batch size = number of cells as #batches is 1.";
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}
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EXPECT_EQ(num_col_batch, 1) << "Expected number of batches to be 1";
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delete dmat;
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}
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