| // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| |
| #include <algorithm> |
| #include <vector> |
| #include <testsuite_hooks.h> |
| #include <testsuite_iterators.h> |
| |
| using __gnu_test::test_container; |
| using __gnu_test::test_range; |
| using __gnu_test::input_iterator_wrapper; |
| using __gnu_test::output_iterator_wrapper; |
| using __gnu_test::random_access_iterator_wrapper; |
| |
| namespace ranges = std::ranges; |
| |
| template<template<typename> typename in_wrapper, |
| template<typename> typename out_wrapper> |
| void |
| test01() |
| { |
| int x[] = {1,2,3,4,5,6,7}; |
| for (int i = -1; i <= 7; i++) |
| { |
| test_range<int, in_wrapper> rx(x); |
| int w[7]; |
| test_range<int, out_wrapper> rw(w); |
| ranges::copy_n(rx.begin(), i, rw.begin()); |
| if (i >= 0) |
| VERIFY( ranges::equal(x, x+i, w, w+i) ); |
| } |
| } |
| |
| constexpr bool |
| test02() |
| { |
| int x[] = {1,2,3}; |
| int y[2]; |
| auto [in,out] = ranges::copy_n(x, 2, y); |
| return (in == x+2 |
| && out == y+2 |
| && ranges::equal(x, x+2, y, y+2)); |
| } |
| |
| int |
| main() |
| { |
| test01<input_iterator_wrapper, |
| output_iterator_wrapper>(); |
| test01<random_access_iterator_wrapper, |
| output_iterator_wrapper>(); |
| test01<random_access_iterator_wrapper, |
| random_access_iterator_wrapper>(); |
| static_assert(test02()); |
| } |