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 // UNSUPPORTED: libcpp-has-no-incomplete-ranges
11 
12 // <algorithm>
13 
14 // template<bidirectional_iterator I, sentinel_for<I> S, class Proj = identity,
15 //          indirect_unary_predicate<projected<I, Proj>> Pred>
16 //   requires permutable<I>
17 //   subrange<I> stable_partition(I first, S last, Pred pred, Proj proj = {});                      // Since C++20
18 //
19 // template<bidirectional_range R, class Proj = identity,
20 //          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
21 //   requires permutable<iterator_t<R>>
22 //   borrowed_subrange_t<R> stable_partition(R&& r, Pred pred, Proj proj = {});                     // Since C++20
23 
24 #include <algorithm>
25 #include <array>
26 #include <concepts>
27 #include <functional>
28 #include <ranges>
29 
30 #include "almost_satisfies_types.h"
31 #include "test_iterators.h"
32 
33 // TODO: SFINAE tests.
34 
35 constexpr bool test() {
36   // TODO: main tests.
37   // TODO: A custom comparator works.
38   // TODO: A custom projection works.
39 
40   return true;
41 }
42 
43 int main(int, char**) {
44   test();
45   static_assert(test());
46 
47   return 0;
48 }
49