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#include <library/cpp/testing/gtest/gtest.h>
#include <library/cpp/yt/misc/non_null_ptr.h>
namespace NYT {
namespace {
////////////////////////////////////////////////////////////////////////////////
enum class EFuncResult
{
Base,
ConstBase,
Derived,
ConstDerived,
};
enum class EBinaryFuncResult
{
OK,
NotOK,
};
struct TBase
{ };
struct TDerived
: public TBase
{ };
EFuncResult Foo(TNonNullPtr<TBase> /*base*/)
{
return EFuncResult::Base;
}
EFuncResult Foo(TNonNullPtr<const TBase> /*base*/)
{
return EFuncResult::ConstBase;
}
EFuncResult Foo(TNonNullPtr<TDerived> /*derived*/)
{
return EFuncResult::Derived;
}
EFuncResult Foo(TNonNullPtr<const TDerived> /*derived*/)
{
return EFuncResult::ConstDerived;
}
[[maybe_unused]] EBinaryFuncResult Foo(int* /*derived*/)
{
return EBinaryFuncResult::NotOK;
}
EBinaryFuncResult Foo(TNonNullPtr<int> /*derived*/)
{
return EBinaryFuncResult::OK;
}
EBinaryFuncResult Bar(TNonNullPtr<const int> /*arg*/)
{
return EBinaryFuncResult::OK;
}
EBinaryFuncResult Baz(TNonNullPtr<int> /*arg*/)
{
return EBinaryFuncResult::OK;
}
TEST(TNonNullPtrTest, Simple)
{
TDerived derived{};
const auto& constDerived = derived;
EXPECT_EQ(EFuncResult::Derived, Foo(GetPtr(derived)));
EXPECT_EQ(EFuncResult::ConstDerived, Foo(GetPtr(constDerived)));
TBase base{};
const auto& constBase = base;
EXPECT_EQ(EFuncResult::Base, Foo(GetPtr(base)));
EXPECT_EQ(EFuncResult::ConstBase, Foo(GetPtr(constBase)));
int i{};
EXPECT_EQ(EBinaryFuncResult::OK, Foo(GetPtr(i)));
}
TEST(TNonNullPtrTest, CastToConst)
{
int i{};
EXPECT_EQ(EBinaryFuncResult::OK, Bar(GetPtr(i)));
}
TEST(TNonNullPtrTest, ConstructionFromRawPointer)
{
int i{};
EXPECT_EQ(EBinaryFuncResult::OK, Baz(&i));
}
////////////////////////////////////////////////////////////////////////////////
} // namespace
} // namespace NYT
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