xgboost/tests/cpp/common/test_optional_weight.cc
Jiaming Yuan 28bb01aa22
Extract optional weight. (#8747)
- Extract optional weight from coommon.h to reduce dependency on this header.
- Add test.
2023-02-07 03:11:53 +08:00

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C++

/**
* Copyright 2023 by XGBoost Contributors
*/
#include <gtest/gtest.h>
#include <xgboost/context.h> // Context
#include <xgboost/host_device_vector.h> // HostDeviceVector
#include "../../../src/common/optional_weight.h"
namespace xgboost {
namespace common {
TEST(OptionalWeight, Basic) {
HostDeviceVector<float> weight{{2.0f, 3.0f, 4.0f}};
Context ctx;
auto opt_w = MakeOptionalWeights(&ctx, weight);
ASSERT_EQ(opt_w[0], 2.0f);
ASSERT_FALSE(opt_w.Empty());
weight.HostVector().clear();
opt_w = MakeOptionalWeights(&ctx, weight);
ASSERT_EQ(opt_w[0], 1.0f);
ASSERT_TRUE(opt_w.Empty());
}
} // namespace common
} // namespace xgboost