erase_key.pass.cpp
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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <set>
// class multiset
// size_type erase(const key_type& k);
#include <set>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::multiset<int> M;
typedef int V;
typedef M::size_type I;
V ar[] =
{
3,
3,
3,
5,
5,
5,
7,
7,
7
};
M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
assert(m.size() == 9);
I i = m.erase(6);
assert(m.size() == 9);
assert(i == 0);
assert(*next(m.begin(), 0) == 3);
assert(*next(m.begin(), 1) == 3);
assert(*next(m.begin(), 2) == 3);
assert(*next(m.begin(), 3) == 5);
assert(*next(m.begin(), 4) == 5);
assert(*next(m.begin(), 5) == 5);
assert(*next(m.begin(), 6) == 7);
assert(*next(m.begin(), 7) == 7);
assert(*next(m.begin(), 8) == 7);
i = m.erase(5);
assert(m.size() == 6);
assert(i == 3);
assert(*next(m.begin(), 0) == 3);
assert(*next(m.begin(), 1) == 3);
assert(*next(m.begin(), 2) == 3);
assert(*next(m.begin(), 3) == 7);
assert(*next(m.begin(), 4) == 7);
assert(*next(m.begin(), 5) == 7);
i = m.erase(3);
assert(m.size() == 3);
assert(i == 3);
assert(*next(m.begin(), 0) == 7);
assert(*next(m.begin(), 1) == 7);
assert(*next(m.begin(), 2) == 7);
i = m.erase(7);
assert(m.size() == 0);
assert(i == 3);
}
#if TEST_STD_VER >= 11
{
typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
typedef int V;
typedef M::size_type I;
V ar[] =
{
3,
3,
3,
5,
5,
5,
7,
7,
7
};
M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
assert(m.size() == 9);
I i = m.erase(6);
assert(m.size() == 9);
assert(i == 0);
assert(*next(m.begin(), 0) == 3);
assert(*next(m.begin(), 1) == 3);
assert(*next(m.begin(), 2) == 3);
assert(*next(m.begin(), 3) == 5);
assert(*next(m.begin(), 4) == 5);
assert(*next(m.begin(), 5) == 5);
assert(*next(m.begin(), 6) == 7);
assert(*next(m.begin(), 7) == 7);
assert(*next(m.begin(), 8) == 7);
i = m.erase(5);
assert(m.size() == 6);
assert(i == 3);
assert(*next(m.begin(), 0) == 3);
assert(*next(m.begin(), 1) == 3);
assert(*next(m.begin(), 2) == 3);
assert(*next(m.begin(), 3) == 7);
assert(*next(m.begin(), 4) == 7);
assert(*next(m.begin(), 5) == 7);
i = m.erase(3);
assert(m.size() == 3);
assert(i == 3);
assert(*next(m.begin(), 0) == 7);
assert(*next(m.begin(), 1) == 7);
assert(*next(m.begin(), 2) == 7);
i = m.erase(7);
assert(m.size() == 0);
assert(i == 3);
}
#endif
return 0;
}