67 lines
2 KiB
C++
67 lines
2 KiB
C++
// Copyright (C) 2020-2024 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do run { target c++20 } }
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// { dg-require-cstdint "" }
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#include <algorithm>
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#include <random>
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#include <testsuite_hooks.h>
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#include <testsuite_iterators.h>
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using __gnu_test::test_range;
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using __gnu_test::forward_iterator_wrapper;
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using __gnu_test::input_iterator_wrapper;
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using __gnu_test::output_iterator_wrapper;
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using __gnu_test::random_access_iterator_wrapper;
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namespace ranges = std::ranges;
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std::mt19937 rng;
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template<template<typename> typename in_wrapper,
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template<typename> typename out_wrapper>
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void
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test01()
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{
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const int x[] = {1,2,3,4,5,6,7,8,9,10};
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test_range<const int, in_wrapper> rx(x);
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int y[10];
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test_range<int, out_wrapper> ry(y);
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auto out = ranges::sample(rx.begin(), rx.end(), ry.begin(), 20, rng);
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VERIFY( out.ptr == y+10 );
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VERIFY( ranges::equal(x, y) );
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for (int i = 0; i < 100; i++)
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{
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int z[5] = {0};
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test_range<int, out_wrapper> rz(z);
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rx.bounds.first = x;
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auto out = ranges::sample(rx, rz.begin(), 5, rng);
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VERIFY( out.ptr == z+5 );
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ranges::sort(z);
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VERIFY( ranges::adjacent_find(z) == out.ptr );
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VERIFY( ranges::includes(x, z) );
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}
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}
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int
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main()
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{
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test01<forward_iterator_wrapper, output_iterator_wrapper>();
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test01<input_iterator_wrapper, random_access_iterator_wrapper>();
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}
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