xgboost/tests/cpp/common/test_gpuset.cc
trivialfis 60787ecebc Merge generic device helper functions into gpu set. (#3626)
* Remove the use of old NDevices* functions.
* Use GPUSet in timer.h.
2018-08-26 18:14:23 +12:00

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#include "../../../src/common/gpu_set.h"
#include <gtest/gtest.h>
namespace xgboost {
TEST(GPUSet, Basic) {
GPUSet devices = GPUSet::Empty();
ASSERT_TRUE(devices.IsEmpty());
devices = GPUSet{0, 1};
ASSERT_TRUE(devices != GPUSet::Empty());
EXPECT_EQ(devices.Size(), 1);
EXPECT_ANY_THROW(devices.Index(1));
EXPECT_ANY_THROW(devices.Index(-1));
devices = GPUSet::Range(1, 0);
EXPECT_EQ(devices, GPUSet::Empty());
EXPECT_EQ(devices.Size(), 0);
EXPECT_TRUE(devices.IsEmpty());
EXPECT_FALSE(devices.Contains(1));
devices = GPUSet::Range(2, -1);
EXPECT_EQ(devices, GPUSet::Empty());
EXPECT_EQ(devices.Size(), 0);
EXPECT_TRUE(devices.IsEmpty());
devices = GPUSet::Range(2, 8);
EXPECT_EQ(devices.Size(), 8);
devices = devices.Unnormalised();
EXPECT_EQ(*devices.begin(), 0);
EXPECT_EQ(*devices.end(), devices.Size());
}
} // namespace xgboost