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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, c++20
// <flat_set>
// pair<iterator, bool> insert(const value_type& v);
#include <flat_set>
#include <deque>
#include <cassert>
#include <functional>
#include "MinSequenceContainer.h"
#include "test_macros.h"
#include "../helpers.h"
#include "min_allocator.h"
template <class KeyContainer>
constexpr void test_one() {
using Key = typename KeyContainer::value_type;
using M = std::flat_set<Key, std::less<Key>, KeyContainer>;
using R = std::pair<typename M::iterator, bool>;
using VT = typename M::value_type;
M m;
const VT v1(2);
std::same_as<R> decltype(auto) r = m.insert(v1);
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*r.first == 2);
const VT v2(1);
r = m.insert(v2);
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 2);
assert(*r.first == 1);
const VT v3(3);
r = m.insert(v3);
assert(r.second);
assert(r.first == std::ranges::prev(m.end()));
assert(m.size() == 3);
assert(*r.first == 3);
const VT v4(3);
r = m.insert(v4);
assert(!r.second);
assert(r.first == std::ranges::prev(m.end()));
assert(m.size() == 3);
assert(*r.first == 3);
}
constexpr bool test() {
test_one<std::vector<int>>();
#ifndef __cpp_lib_constexpr_deque
if (!TEST_IS_CONSTANT_EVALUATED)
#endif
test_one<std::deque<int>>();
test_one<MinSequenceContainer<int>>();
test_one<std::vector<int, min_allocator<int>>>();
return true;
}
void test_exception() {
auto insert_func = [](auto& m, auto key_arg) {
using value_type = typename std::decay_t<decltype(m)>::value_type;
const value_type p(key_arg);
m.insert(p);
};
test_emplace_exception_guarantee(insert_func);
}
int main(int, char**) {
test();
test_exception();
#if TEST_STD_VER >= 26
static_assert(test());
#endif
return 0;
}
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