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#include <gtest/gtest.h>
#include <c10/core/impl/FakeGuardImpl.h>
#include <c10/core/impl/InlineDeviceGuard.h>
using namespace c10;
using namespace c10::impl;
constexpr auto TestDeviceType = DeviceType::CUDA;
using TestGuardImpl = FakeGuardImpl<TestDeviceType>;
static Device dev(DeviceIndex index) {
return Device(TestDeviceType, index);
}
// -- InlineDeviceGuard -------------------------------------------------------
using TestGuard = InlineDeviceGuard<TestGuardImpl>;
TEST(InlineDeviceGuard, Constructor) {
for (DeviceIndex i : {-1, 0, 1}) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
auto test_body = [&](TestGuard& g) -> void {
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i == -1 ? init_i : i));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i == -1 ? init_i : i);
// Test un-bracketed write to device index
TestGuardImpl::setDeviceIndex(4);
};
{
// Index constructor
TestGuard g(i);
test_body(g);
}
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
{
// Device constructor
TestGuard g(dev(i));
test_body(g);
}
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
/*
{
// Optional constructor
TestGuard g(make_optional(dev(i)));
test_body(g);
}
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
*/
}
}
TEST(InlineDeviceGuard, ConstructorError) {
// NOLINTNEXTLINE(cppcoreguidelines-avoid-goto,hicpp-avoid-goto)
EXPECT_ANY_THROW(InlineDeviceGuard<FakeGuardImpl<DeviceType::CUDA>> g(
Device(DeviceType::HIP, 1)));
}
TEST(InlineDeviceGuard, SetDevice) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
DeviceIndex i = init_i + 1;
TestGuard g(i);
DeviceIndex i2 = init_i + 2;
g.set_device(dev(i2));
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i2));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i2);
g.set_device(dev(i2));
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i2));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i2);
}
TEST(InlineDeviceGuard, ResetDevice) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
DeviceIndex i = init_i + 1;
TestGuard g(i);
DeviceIndex i2 = init_i + 2;
g.reset_device(dev(i2));
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i2));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i2);
g.reset_device(dev(i2));
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i2));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i2);
}
TEST(InlineDeviceGuard, SetIndex) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
DeviceIndex i = init_i + 1;
TestGuard g(i);
DeviceIndex i2 = init_i + 2;
g.set_index(i2);
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i2));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i2);
g.set_index(i2);
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i2));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i2);
}
// -- InlineOptionalDeviceGuard
// --------------------------------------------------
using MaybeTestGuard = InlineOptionalDeviceGuard<TestGuardImpl>;
TEST(InlineOptionalDeviceGuard, Constructor) {
for (DeviceIndex i : {-1, 0, 1}) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
auto test_body = [&](MaybeTestGuard& g) -> void {
ASSERT_EQ(g.original_device(), dev(init_i));
ASSERT_EQ(g.current_device(), dev(i == -1 ? init_i : i));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i == -1 ? init_i : i);
// Test un-bracketed write to device index
TestGuardImpl::setDeviceIndex(4);
};
{
// Index constructor
MaybeTestGuard g(i);
test_body(g);
}
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
{
// Device constructor
MaybeTestGuard g(dev(i));
test_body(g);
}
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
{
// Optional constructor
MaybeTestGuard g(make_optional(dev(i)));
test_body(g);
}
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
}
}
TEST(InlineOptionalDeviceGuard, NullaryConstructor) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
auto test_body = [&](MaybeTestGuard& g) -> void {
ASSERT_EQ(g.original_device(), nullopt);
ASSERT_EQ(g.current_device(), nullopt);
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), init_i);
};
{
MaybeTestGuard g;
test_body(g);
}
{
// If you want nullopt directly to work, define a nullopt_t
// overload. But I don't really see why you'd want this lol.
optional<Device> dev_opt = nullopt;
MaybeTestGuard g(dev_opt);
test_body(g);
}
}
TEST(InlineOptionalDeviceGuard, SetDevice) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
MaybeTestGuard g;
DeviceIndex i = init_i + 1;
g.set_device(dev(i));
ASSERT_EQ(g.original_device(), make_optional(dev(init_i)));
ASSERT_EQ(g.current_device(), make_optional(dev(i)));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i);
g.set_device(dev(i));
ASSERT_EQ(g.original_device(), make_optional(dev(init_i)));
ASSERT_EQ(g.current_device(), make_optional(dev(i)));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i);
}
TEST(InlineOptionalDeviceGuard, SetIndex) {
DeviceIndex init_i = 0;
TestGuardImpl::setDeviceIndex(init_i);
DeviceIndex i = init_i + 1;
MaybeTestGuard g;
g.set_index(i);
ASSERT_EQ(g.original_device(), make_optional(dev(init_i)));
ASSERT_EQ(g.current_device(), make_optional(dev(i)));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i);
g.set_index(i);
ASSERT_EQ(g.original_device(), make_optional(dev(init_i)));
ASSERT_EQ(g.current_device(), make_optional(dev(i)));
ASSERT_EQ(TestGuardImpl::getDeviceIndex(), i);
}
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