xref: /llvm-project/libcxx/test/std/ranges/range.factories/range.single.view/ctad.compile.pass.cpp (revision b8cb1dc9ea87faa8e8e9ab7a31710a8c0bb8b084)
1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 
11 // template<class T>
12 //   single_view(T) -> single_view<T>;
13 
14 #include <ranges>
15 
16 #include <cassert>
17 #include <concepts>
18 
19 #include "test_iterators.h"
20 
21 struct Empty {};
22 
23 static_assert(std::same_as<
24   decltype(std::ranges::single_view(Empty())),
25   std::ranges::single_view<Empty>
26 >);
27 
28 static_assert(std::same_as<
29   decltype(std::ranges::single_view(std::declval<Empty&>())),
30   std::ranges::single_view<Empty>
31 >);
32 
33 static_assert(std::same_as<
34   decltype(std::ranges::single_view(std::declval<Empty&&>())),
35   std::ranges::single_view<Empty>
36 >);
37