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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <set>
// template <class T, class Compare, class Allocator, class Predicate>
// typename set<T, Compare, Allocator>::size_type
// erase_if(set<T, Compare, Allocator>& c, Predicate pred);
#include <set>
#include "test_macros.h"
#include "test_allocator.h"
#include "min_allocator.h"
template <class S, class Pred>
void test0(S s, Pred p, S expected, std::size_t expected_erased_count) {
ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
assert(expected_erased_count == std::erase_if(s, p));
assert(s == expected);
}
template <typename S>
void test()
{
auto is1 = [](auto v) { return v == 1;};
auto is2 = [](auto v) { return v == 2;};
auto is3 = [](auto v) { return v == 3;};
auto is4 = [](auto v) { return v == 4;};
auto True = [](auto) { return true; };
auto False = [](auto) { return false; };
test0(S(), is1, S(), 0);
test0(S({1}), is1, S(), 1);
test0(S({1}), is2, S({1}), 0);
test0(S({1, 2}), is1, S({2}), 1);
test0(S({1, 2}), is2, S({1}), 1);
test0(S({1, 2}), is3, S({1, 2}), 0);
test0(S({1, 2, 3}), is1, S({2, 3}), 1);
test0(S({1, 2, 3}), is2, S({1, 3}), 1);
test0(S({1, 2, 3}), is3, S({1, 2}), 1);
test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
test0(S({1, 2, 3}), True, S(), 3);
test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
}
int main(int, char**)
{
test<std::set<int>>();
test<std::set<int, std::less<int>, min_allocator<int>>> ();
test<std::set<int, std::less<int>, test_allocator<int>>> ();
test<std::set<long>>();
test<std::set<double>>();
return 0;
}
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