xref: /llvm-project-15.0.7/libcxx/test/std/containers/associative/multimap/multimap.modifiers/clear.pass.cpp (revision 2df59c50)

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <map>

// class multimap

// void clear() noexcept;

#include <map>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"

int main(int, char**)
{
    {
        typedef std::multimap<int, double> M;
        typedef std::pair<int, double> P;
        P ar[] =
        {
            P(1, 1.5),
            P(2, 2.5),
            P(3, 3.5),
            P(4, 4.5),
            P(5, 5.5),
            P(6, 6.5),
            P(7, 7.5),
            P(8, 8.5),
        };
        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
        assert(m.size() == 8);
        ASSERT_NOEXCEPT(m.clear());
        m.clear();
        assert(m.size() == 0);
    }
#if TEST_STD_VER >= 11
    {
        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
        typedef std::pair<int, double> P;
        P ar[] =
        {
            P(1, 1.5),
            P(2, 2.5),
            P(3, 3.5),
            P(4, 4.5),
            P(5, 5.5),
            P(6, 6.5),
            P(7, 7.5),
            P(8, 8.5),
        };
        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
        assert(m.size() == 8);
        ASSERT_NOEXCEPT(m.clear());
        m.clear();
        assert(m.size() == 0);
    }
#endif

  return 0;
}