xref: /llvm-project/libcxx/test/std/ranges/range.factories/range.repeat.view/ctad.compile.pass.cpp (revision 0ecc1646cbbb1bdfce234a11bec33b8c64af29cb)
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, c++20
10 
11 // template<class T, class Bound>
12 //    repeat_view(T, Bound) -> repeat_view<T, Bound>;
13 
14 #include <concepts>
15 #include <ranges>
16 #include <utility>
17 
18 struct Empty {};
19 
20 // clang-format off
21 static_assert(std::same_as<decltype(std::ranges::repeat_view(Empty())), std::ranges::repeat_view<Empty>>);
22 static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&>())), std::ranges::repeat_view<Empty>>);
23 static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&&>())), std::ranges::repeat_view<Empty>>);
24 static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1)), std::ranges::repeat_view<int, int>>);
25 static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1U)), std::ranges::repeat_view<int, unsigned>>);
26 static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1UL)), std::ranges::repeat_view<int, unsigned long>>);
27 
28 using RPV = std::ranges::repeat_view<const char*>;
29 static_assert(std::same_as<decltype(std::ranges::repeat_view("foo", std::unreachable_sentinel)), RPV>);  // OK
30 static_assert(std::same_as<decltype(std::ranges::repeat_view(+"foo", std::unreachable_sentinel)), RPV>); // OK
31 static_assert(std::same_as<decltype(std::ranges::repeat_view("foo")), RPV>);                             // OK since LWG4053
32 static_assert(std::same_as<decltype(std::ranges::repeat_view(+"foo")), RPV>);                            // OK
33 // clang-format on
34