third_party/llvm-project/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/make_reverse_iterator.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11

// <iterator>

// reverse_iterator

// template <class Iterator>
// reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // constexpr in C++17

#include <iterator>
#include <cassert>

#include "test_macros.h"
#include "test_iterators.h"

template <class It>
TEST_CONSTEXPR_CXX17 void test(It i) {
    const std::reverse_iterator<It> r = std::make_reverse_iterator(i);
    assert(r.base() == i);
}

TEST_CONSTEXPR_CXX17 bool tests() {
    const char* s = "1234567890";
    random_access_iterator<const char*> b(s);
    random_access_iterator<const char*> e(s+10);
    while (b != e)
        test (b++);
    return true;
}

int main(int, char**) {
    tests();
#if TEST_STD_VER > 14
    static_assert(tests(), "");
#endif
    return 0;
}