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<permutable I, sentinel_for<I> S, class Proj = identity,
15 //          indirect_unary_predicate<projected<I, Proj>> Pred>
16 //   constexpr subrange<I>
17 //     partition(I first, S last, Pred pred, Proj proj = {});                                       // Since C++20
18 //
19 // template<forward_range R, class Proj = identity,
20 //          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
21 //   requires permutable<iterator_t<R>>
22 //   constexpr borrowed_subrange_t<R>
23 //     partition(R&& r, Pred pred, Proj proj = {});                                                 // Since C++20
24 
25 #include <algorithm>
26 #include <array>
27 #include <concepts>
28 #include <functional>
29 #include <ranges>
30 
31 #include "almost_satisfies_types.h"
32 #include "test_iterators.h"
33 
34 // TODO: SFINAE tests.
35 
36 constexpr bool test() {
37   // TODO: main tests.
38   // TODO: A custom comparator works.
39   // TODO: A custom projection works.
40 
41   return true;
42 }
43 
44 int main(int, char**) {
45   test();
46   static_assert(test());
47 
48   return 0;
49 }
50