Run DCE after a LoopFlatten test to reduce spurious output [nfc]
[llvm-project.git] / libcxx / test / std / algorithms / algorithms.results / in_in_result.pass.cpp
blob64d1106117329c6c0ea9df5e7ccaa9ce11929d18
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 //===----------------------------------------------------------------------===//
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
11 // template <class I1, class I2>
12 // struct in_in_result;
14 #include <algorithm>
15 #include <cassert>
16 #include <type_traits>
18 #include "MoveOnly.h"
20 struct A {
21 explicit A(int);
23 // no implicit conversion
24 static_assert(!std::is_constructible_v<std::ranges::in_in_result<A, A>, std::ranges::in_in_result<int, int>>);
26 struct B {
27 B(int);
29 // implicit conversion
30 static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, std::ranges::in_in_result<int, int>>);
31 static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, std::ranges::in_in_result<int, int>&>);
32 static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, const std::ranges::in_in_result<int, int>>);
33 static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, const std::ranges::in_in_result<int, int>&>);
35 struct C {
36 C(int&);
38 static_assert(!std::is_constructible_v<std::ranges::in_in_result<C, C>, std::ranges::in_in_result<int, int>&>);
40 // has to be convertible via const&
41 static_assert(std::is_convertible_v<std::ranges::in_in_result<int, int>&, std::ranges::in_in_result<long, long>>);
42 static_assert(std::is_convertible_v<const std::ranges::in_in_result<int, int>&, std::ranges::in_in_result<long, long>>);
43 static_assert(std::is_convertible_v<std::ranges::in_in_result<int, int>&&, std::ranges::in_in_result<long, long>>);
44 static_assert(std::is_convertible_v<const std::ranges::in_in_result<int, int>&&, std::ranges::in_in_result<long, long>>);
46 // should be move constructible
47 static_assert(std::is_move_constructible_v<std::ranges::in_in_result<MoveOnly, int>>);
48 static_assert(std::is_move_constructible_v<std::ranges::in_in_result<int, MoveOnly>>);
50 struct NotConvertible {};
51 // conversions should not work if there is no conversion
52 static_assert(!std::is_convertible_v<std::ranges::in_in_result<NotConvertible, int>, std::ranges::in_in_result<int, int>>);
53 static_assert(!std::is_convertible_v<std::ranges::in_in_result<int, NotConvertible>, std::ranges::in_in_result<int, int>>);
55 template <class T>
56 struct ConstructibleFrom {
57 constexpr ConstructibleFrom(T c) : content{c} {}
58 T content;
61 constexpr bool test() {
63 std::ranges::in_in_result<int, double> res{10L, 0.};
64 assert(res.in1 == 10);
65 assert(res.in2 == 0.);
66 std::ranges::in_in_result<ConstructibleFrom<int>, ConstructibleFrom<double>> res2 = res;
67 assert(res2.in1.content == 10);
68 assert(res2.in2.content == 0.);
71 std::ranges::in_in_result<MoveOnly, int> res{MoveOnly{}, 0};
72 assert(res.in1.get() == 1);
73 [[maybe_unused]] auto res2 = static_cast<std::ranges::in_in_result<MoveOnly, int>>(std::move(res));
74 assert(res.in1.get() == 0);
77 auto [in1, in2] = std::ranges::in_in_result<int, int>{1, 2};
78 assert(in1 == 1);
79 assert(in2 == 2);
82 return true;
85 int main(int, char**) {
86 test();
87 static_assert(test());
89 return 0;