diff options
Diffstat (limited to 'libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper')
3 files changed, 96 insertions, 0 deletions
diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.fail.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.fail.cpp new file mode 100644 index 00000000000..3f132e47b62 --- /dev/null +++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.fail.cpp @@ -0,0 +1,27 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03 + +// <tuple> + +// template <class... Types> +// class tuple_size<tuple<Types...>> +// : public integral_constant<size_t, sizeof...(Types)> { }; + +// Expect failures with a reference type, pointer type, and a non-tuple type. + +#include <tuple> + +int main() +{ + (void)std::tuple_size<std::tuple<> &>::value; // expected-error {{implicit instantiation of undefined template}} + (void)std::tuple_size<int>::value; // expected-error {{implicit instantiation of undefined template}} + (void)std::tuple_size<std::tuple<>*>::value; // expected-error {{implicit instantiation of undefined template}} +} diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.fail.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.fail.cpp new file mode 100644 index 00000000000..957a683b47f --- /dev/null +++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.fail.cpp @@ -0,0 +1,26 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03, c++11, c++14 + +// <tuple> + +// template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value; + +// Expect failures with a reference type, pointer type, and a non-tuple type. + +#include <tuple> + +int main() +{ + (void)std::tuple_size_v<std::tuple<> &>; // expected-note {{requested here}} + (void)std::tuple_size_v<int>; // expected-note {{requested here}} + (void)std::tuple_size_v<std::tuple<>*>; // expected-note {{requested here}} + // expected-error@tuple:* 3 {{implicit instantiation of undefined template}} +} diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.pass.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.pass.cpp new file mode 100644 index 00000000000..24878a1d560 --- /dev/null +++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.pass.cpp @@ -0,0 +1,43 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03, c++11, c++14 + +// <tuple> + +// template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value; + +#include <tuple> +#include <utility> +#include <array> + +template <class Tuple, int Expect> +void test() +{ + static_assert(std::tuple_size_v<Tuple> == Expect, ""); + static_assert(std::tuple_size_v<Tuple> == std::tuple_size<Tuple>::value, ""); + static_assert(std::tuple_size_v<Tuple const> == std::tuple_size<Tuple>::value, ""); + static_assert(std::tuple_size_v<Tuple volatile> == std::tuple_size<Tuple>::value, ""); + static_assert(std::tuple_size_v<Tuple const volatile> == std::tuple_size<Tuple>::value, ""); +} + +int main() +{ + test<std::tuple<>, 0>(); + + test<std::tuple<int>, 1>(); + test<std::array<int, 1>, 1>(); + + test<std::tuple<int, int>, 2>(); + test<std::pair<int, int>, 2>(); + test<std::array<int, 2>, 2>(); + + test<std::tuple<int, int, int>, 3>(); + test<std::array<int, 3>, 3>(); +} |
