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#include <gtest/gtest.h>
#include <c10/core/DeviceGuard.h>
#include <c10/core/impl/FakeGuardImpl.h>
using namespace c10;
using namespace c10::impl;
// The tests here are mostly covered by InlineDeviceGuard_test, but there
// is some DeviceGuard specific functionality we must test.
// -- DeviceGuard -------------------------------------------------------
TEST(DeviceGuard, ResetDeviceDifferentDeviceType) {
FakeGuardImpl<DeviceType::CUDA> cuda_impl;
FakeGuardImpl<DeviceType::HIP> hip_impl;
FakeGuardImpl<DeviceType::CUDA>::setDeviceIndex(0);
FakeGuardImpl<DeviceType::HIP>::setDeviceIndex(0);
DeviceGuard g(Device(DeviceType::CUDA, 1), &cuda_impl);
g.reset_device(Device(DeviceType::HIP, 2), &hip_impl);
ASSERT_EQ(FakeGuardImpl<DeviceType::CUDA>::getDeviceIndex(), 0);
ASSERT_EQ(FakeGuardImpl<DeviceType::HIP>::getDeviceIndex(), 2);
ASSERT_EQ(g.current_device(), Device(DeviceType::HIP, 2));
ASSERT_EQ(g.original_device(), Device(DeviceType::HIP, 0));
}
// -- OptionalDeviceGuard -----------------------------------------------
TEST(OptionalDeviceGuard, ResetDeviceDifferentDeviceType) {
FakeGuardImpl<DeviceType::CUDA> cuda_impl;
FakeGuardImpl<DeviceType::HIP> hip_impl;
FakeGuardImpl<DeviceType::CUDA>::setDeviceIndex(0);
FakeGuardImpl<DeviceType::HIP>::setDeviceIndex(0);
OptionalDeviceGuard g;
g.reset_device(Device(DeviceType::CUDA, 1), &cuda_impl);
g.reset_device(Device(DeviceType::HIP, 2), &hip_impl);
ASSERT_EQ(FakeGuardImpl<DeviceType::CUDA>::getDeviceIndex(), 0);
ASSERT_EQ(FakeGuardImpl<DeviceType::HIP>::getDeviceIndex(), 2);
ASSERT_EQ(g.current_device(), make_optional(Device(DeviceType::HIP, 2)));
ASSERT_EQ(g.original_device(), make_optional(Device(DeviceType::HIP, 0)));
}
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