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#include "store_policy.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/generic/vector.h>
Y_UNIT_TEST_SUITE(StorePolicy) {
Y_UNIT_TEST(Compileability) {
// construction
TAutoEmbedOrPtrPolicy<THolder<int>>(MakeHolder<int>(1));
TAutoEmbedOrPtrPolicy<TVector<int>>(TVector<int>{1, 2, 3});
auto a = MakeHolder<int>(42);
TAutoEmbedOrPtrPolicy<THolder<int>&>{a};
// const
(**TAutoEmbedOrPtrPolicy<THolder<int>>(MakeHolder<int>(1)).Ptr())++; // ok
(**TAutoEmbedOrPtrPolicy<THolder<int>&>(a).Ptr())++; // ok
const TVector<int> b = {0};
auto bValue = (*TAutoEmbedOrPtrPolicy<const TVector<int>&>(b).Ptr())[0]; // ok
// (*TAutoEmbedOrPtrPolicy<const TVector<int>&>(b).Ptr())[0]++; // not ok
Y_UNUSED(bValue);
}
template <typename T, typename TFunc>
void FunctionTakingRefDefaultIsObject(T&& a, TFunc func) {
TAutoEmbedOrPtrPolicy<T> refHolder(a);
func(refHolder);
}
Y_UNIT_TEST(Reference) {
{
TVector<ui32> a = {1, 2, 3};
FunctionTakingRefDefaultIsObject(a, [](auto& holder) {
holder.Ptr()->push_back(4);
auto secondHolder = holder;
secondHolder.Ptr()->push_back(5);
});
UNIT_ASSERT_VALUES_EQUAL(a.size(), 5);
}
{
const TVector<ui32> a = {1, 2, 3};
static_assert(std::is_const<decltype(a)>::value);
FunctionTakingRefDefaultIsObject(a, [](auto& holder) {
static_assert(std::is_const<std::remove_reference_t<decltype(*holder.Ptr())>>::value);
UNIT_ASSERT_VALUES_EQUAL(holder.Ptr()->size(), 3);
});
}
}
template <typename T, typename TFunc>
void FunctionTakingObjectDefaultObject(T&& a, TFunc func) {
TAutoEmbedOrPtrPolicy<T> objectHolder(std::forward<T>(a));
func(objectHolder);
}
Y_UNIT_TEST(Object) {
TVector<ui32> a = {1, 2, 3};
FunctionTakingObjectDefaultObject(std::move(a), [&a](auto& holder) {
static_assert(std::is_copy_assignable<decltype(holder)>::value);
UNIT_ASSERT_VALUES_EQUAL(a.size(), 0);
UNIT_ASSERT_VALUES_EQUAL(holder.Ptr()->size(), 3);
holder.Ptr()->push_back(4);
auto secondHolder = holder;
secondHolder.Ptr()->push_back(5);
UNIT_ASSERT_VALUES_EQUAL(holder.Ptr()->size(), 4);
UNIT_ASSERT_VALUES_EQUAL(secondHolder.Ptr()->size(), 5);
});
UNIT_ASSERT_VALUES_EQUAL(a.size(), 0);
THolder<int> b = MakeHolder<int>(42);
FunctionTakingObjectDefaultObject(std::move(b), [](auto& holder) {
static_assert(!std::is_copy_assignable<decltype(holder)>::value);
UNIT_ASSERT_VALUES_EQUAL(**holder.Ptr(), 42);
auto secondHolder = std::move(holder);
UNIT_ASSERT(!*holder.Ptr());
UNIT_ASSERT_VALUES_EQUAL(**secondHolder.Ptr(), 42);
});
}
}
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