cxx/test/containers/associative/multiset/size.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <set>

// class multiset

// size_type size() const;

#include <set>
#include <cassert>

int main()
{
    typedef std::multiset<int> M;
    M m;
    assert(m.size() == 0);
    m.insert(M::value_type(2));
    assert(m.size() == 1);
    m.insert(M::value_type(1));
    assert(m.size() == 2);
    m.insert(M::value_type(2));
    assert(m.size() == 3);
    m.erase(m.begin());
    assert(m.size() == 2);
    m.erase(m.begin());
    assert(m.size() == 1);
    m.erase(m.begin());
    assert(m.size() == 0);
}