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memory: uses_allocator_construction_args pairs support

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This commit is contained in:
Michele Caini
2022-02-23 00:19:55 +01:00
parent cdd029853b
commit cdaced4df6
3 changed files with 115 additions and 18 deletions
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test/entt/core/memory.cpp
+46
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@@ -148,6 +148,52 @@ TEST(UsesAllocatorConstructionArgs, TrailingAllocatorConvention) {
ASSERT_EQ(std::get<0>(args), size);
}
TEST(UsesAllocatorConstructionArgs, PairPiecewiseConstruct) {
const auto size = 42u;
const auto tup = std::make_tuple(size);
const auto args = entt::uses_allocator_construction_args<std::pair<int, std::vector<int>>>(std::allocator<int>{}, std::piecewise_construct, std::make_tuple(3), tup);
static_assert(std::tuple_size_v<decltype(args)> == 3u);
static_assert(std::is_same_v<decltype(args), const std::tuple<std::piecewise_construct_t, std::tuple<int &&>, std::tuple<const unsigned int &, const std::allocator<int> &>>>);
ASSERT_EQ(std::get<0>(std::get<2>(args)), size);
}
TEST(UsesAllocatorConstructionArgs, PairNoArgs) {
[[maybe_unused]] const auto args = entt::uses_allocator_construction_args<std::pair<int, std::vector<int>>>(std::allocator<int>{});
static_assert(std::tuple_size_v<decltype(args)> == 3u);
static_assert(std::is_same_v<decltype(args), const std::tuple<std::piecewise_construct_t, std::tuple<>, std::tuple<const std::allocator<int> &>>>);
}
TEST(UsesAllocatorConstructionArgs, PairValues) {
const auto size = 42u;
const auto args = entt::uses_allocator_construction_args<std::pair<int, std::vector<int>>>(std::allocator<int>{}, 3, size);
static_assert(std::tuple_size_v<decltype(args)> == 3u);
static_assert(std::is_same_v<decltype(args), const std::tuple<std::piecewise_construct_t, std::tuple<int &&>, std::tuple<const unsigned int &, const std::allocator<int> &>>>);
ASSERT_EQ(std::get<0>(std::get<2>(args)), size);
}
TEST(UsesAllocatorConstructionArgs, PairConstLValueReference) {
const auto value = std::make_pair(3, 42u);
const auto args = entt::uses_allocator_construction_args<std::pair<int, std::vector<int>>>(std::allocator<int>{}, value);
static_assert(std::tuple_size_v<decltype(args)> == 3u);
static_assert(std::is_same_v<decltype(args), const std::tuple<std::piecewise_construct_t, std::tuple<const int &>, std::tuple<const unsigned int &, const std::allocator<int> &>>>);
ASSERT_EQ(std::get<0>(std::get<1>(args)), 3);
ASSERT_EQ(std::get<0>(std::get<2>(args)), 42u);
}
TEST(UsesAllocatorConstructionArgs, PairRValueReference) {
[[maybe_unused]] const auto args = entt::uses_allocator_construction_args<std::pair<int, std::vector<int>>>(std::allocator<int>{}, std::make_pair(3, 42u));
static_assert(std::tuple_size_v<decltype(args)> == 3u);
static_assert(std::is_same_v<decltype(args), const std::tuple<std::piecewise_construct_t, std::tuple<int &&>, std::tuple<unsigned int &&, const std::allocator<int> &>>>);
}
TEST(MakeObjUsingAllocator, Functionalities) {
const auto size = 42u;
test::throwing_allocator<int>::trigger_on_allocate = true;