cxx/test/containers/associative/multimap/multimap.modifiers/erase_key.pass.cpp
Howard Hinnant bc8d3f97eb libcxx initial import
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 19:42:16 +00:00

85 lines
2.6 KiB
C++

//===----------------------------------------------------------------------===//
//
// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <map>
// class multimap
// size_type erase(const key_type& k);
#include <map>
#include <cassert>
int main()
{
{
typedef std::multimap<int, double> M;
typedef std::pair<int, double> P;
typedef M::size_type I;
P ar[] =
{
P(1, 1),
P(1, 1.5),
P(1, 2),
P(2, 1),
P(2, 1.5),
P(2, 2),
P(3, 1),
P(3, 1.5),
P(3, 2),
};
M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
assert(m.size() == 9);
I i = m.erase(2);
assert(m.size() == 6);
assert(i == 3);
assert(next(m.begin(), 0)->first == 1);
assert(next(m.begin(), 0)->second == 1);
assert(next(m.begin(), 1)->first == 1);
assert(next(m.begin(), 1)->second == 1.5);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == 2);
assert(next(m.begin(), 3)->first == 3);
assert(next(m.begin(), 3)->second == 1);
assert(next(m.begin(), 4)->first == 3);
assert(next(m.begin(), 4)->second == 1.5);
assert(next(m.begin(), 5)->first == 3);
assert(next(m.begin(), 5)->second == 2);
i = m.erase(2);
assert(m.size() == 6);
assert(i == 0);
assert(next(m.begin(), 0)->first == 1);
assert(next(m.begin(), 0)->second == 1);
assert(next(m.begin(), 1)->first == 1);
assert(next(m.begin(), 1)->second == 1.5);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == 2);
assert(next(m.begin(), 3)->first == 3);
assert(next(m.begin(), 3)->second == 1);
assert(next(m.begin(), 4)->first == 3);
assert(next(m.begin(), 4)->second == 1.5);
assert(next(m.begin(), 5)->first == 3);
assert(next(m.begin(), 5)->second == 2);
i = m.erase(3);
assert(m.size() == 3);
assert(next(m.begin(), 0)->first == 1);
assert(next(m.begin(), 0)->second == 1);
assert(next(m.begin(), 1)->first == 1);
assert(next(m.begin(), 1)->second == 1.5);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == 2);
i = m.erase(1);
assert(m.size() == 0);
assert(i == 3);
}
}