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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_map>
// flat_multimap();
#include <cassert>
#include <deque>
#include <flat_map>
#include <functional>
#include <type_traits>
#include <vector>
#include "test_macros.h"
#include "min_allocator.h"
#include "test_allocator.h"
struct DefaultCtableComp {
explicit DefaultCtableComp() { default_constructed_ = true; }
bool operator()(int, int) const { return false; }
bool default_constructed_ = false;
};
int main(int, char**) {
{
std::flat_multimap<int, char*> m;
assert(m.empty());
}
{
// explicit(false)
std::flat_multimap<int, char*> m = {};
assert(m.empty());
}
{
std::flat_multimap<int, char*, DefaultCtableComp, std::deque<int, min_allocator<int>>> m;
assert(m.empty());
assert(m.begin() == m.end());
assert(m.key_comp().default_constructed_);
}
{
using A1 = explicit_allocator<int>;
using A2 = explicit_allocator<char*>;
{
std::flat_multimap<int, char*, DefaultCtableComp, std::vector<int, A1>, std::vector<char*, A2>> m;
assert(m.empty());
assert(m.key_comp().default_constructed_);
}
{
A1 a1;
std::flat_multimap<int, int, DefaultCtableComp, std::vector<int, A1>, std::vector<int, A1>> m(a1);
assert(m.empty());
assert(m.key_comp().default_constructed_);
}
}
{
// If an allocator is given, it must be usable by both containers.
using A = test_allocator<int>;
using M = std::flat_multimap<int, int, std::less<>, std::vector<int>, std::vector<int, A>>;
static_assert(std::is_constructible_v<M>);
static_assert(!std::is_constructible_v<M, std::allocator<int>>);
static_assert(!std::is_constructible_v<M, A>);
}
return 0;
}
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