diff options
Diffstat (limited to 'test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp')
| -rw-r--r-- | test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp b/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp index 65d94fd1e0a4..75dfb0a2e704 100644 --- a/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp +++ b/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp @@ -11,9 +11,9 @@ // <any> -// template <class T, class ...Args> emplace(Args&&...); +// template <class T, class ...Args> T& emplace(Args&&...); // template <class T, class U, class ...Args> -// void emplace(initializer_list<U>, Args&&...); +// T& emplace(initializer_list<U>, Args&&...); #include <any> #include <cassert> @@ -42,7 +42,9 @@ void test_emplace_type() { any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>(); + auto &v = a.emplace<Type>(); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); assert(Tracked::count == 0); assert(Type::count == 1); @@ -56,7 +58,9 @@ void test_emplace_type() { any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>(101); + auto &v = a.emplace<Type>(101); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); assert(Tracked::count == 0); assert(Type::count == 1); @@ -70,7 +74,9 @@ void test_emplace_type() { any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>(-1, 42, -1); + auto &v = a.emplace<Type>(-1, 42, -1); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); assert(Tracked::count == 0); assert(Type::count == 1); @@ -89,14 +95,20 @@ void test_emplace_type_tracked() { { any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>(); + auto &v = a.emplace<Type>(); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); + assert(Tracked::count == 0); assertArgsMatch<Type>(a); } { any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>(-1, 42, -1); + auto &v = a.emplace<Type>(-1, 42, -1); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); + assert(Tracked::count == 0); assertArgsMatch<Type, int, int, int>(a); } @@ -104,7 +116,10 @@ void test_emplace_type_tracked() { { any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>({-1, 42, -1}); + auto &v = a.emplace<Type>({-1, 42, -1}); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); + assert(Tracked::count == 0); assertArgsMatch<Type, std::initializer_list<int>>(a); } @@ -112,7 +127,10 @@ void test_emplace_type_tracked() { int x = 42; any a(std::in_place_type<Tracked>); assert(Tracked::count == 1); - a.emplace<Type>({-1, 42, -1}, x); + auto &v = a.emplace<Type>({-1, 42, -1}, x); + static_assert( std::is_same_v<Type&, decltype(v)>, "" ); + assert(&v == std::any_cast<Type>(&a)); + assert(Tracked::count == 0); assertArgsMatch<Type, std::initializer_list<int>, int&>(a); } |