86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// <flat_set>
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// explicit flat_multiset(const key_compare& comp);
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// template <class Alloc>
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// flat_multiset(const key_compare& comp, const Alloc& a);
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#include <deque>
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#include <flat_set>
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#include <functional>
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#include <type_traits>
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#include <vector>
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#include "test_macros.h"
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#include "../../../test_compare.h"
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#include "test_allocator.h"
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void test() {
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{
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// The constructors in this subclause shall not participate in overload
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// resolution unless uses_allocator_v<container_type, Alloc> is true
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using C = test_less<int>;
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using A1 = test_allocator<int>;
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using A2 = other_allocator<int>;
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using V1 = std::vector<int, A1>;
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using V2 = std::vector<int, A2>;
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using M1 = std::flat_multiset<int, C, V1>;
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using M2 = std::flat_multiset<int, C, V2>;
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static_assert(std::is_constructible_v<M1, const C&, const A1&>);
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static_assert(std::is_constructible_v<M2, const C&, const A2&>);
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static_assert(!std::is_constructible_v<M1, const C&, const A2&>);
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static_assert(!std::is_constructible_v<M2, const C&, const A1&>);
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}
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{
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using C = test_less<int>;
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auto m = std::flat_multiset<int, C>(C(3));
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assert(m.empty());
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assert(m.begin() == m.end());
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assert(m.key_comp() == C(3));
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}
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{
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// The one-argument ctor is explicit.
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using C = test_less<int>;
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static_assert(std::is_constructible_v<std::flat_multiset<int, C>, C>);
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static_assert(!std::is_convertible_v<C, std::flat_multiset<int, C>>);
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static_assert(std::is_constructible_v<std::flat_multiset<int>, std::less<int>>);
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static_assert(!std::is_convertible_v<std::less<int>, std::flat_multiset<int>>);
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}
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{
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using C = test_less<int>;
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using A1 = test_allocator<int>;
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auto m = std::flat_multiset<int, C, std::vector<int, A1>>(C(4), A1(5));
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assert(m.empty());
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assert(m.begin() == m.end());
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assert(m.key_comp() == C(4));
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assert(std::move(m).extract().get_allocator() == A1(5));
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}
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{
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// explicit(false)
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using C = test_less<int>;
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using A1 = test_allocator<int>;
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std::flat_multiset<int, C, std::deque<int, A1>> m = {C(4), A1(5)};
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assert(m.empty());
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assert(m.begin() == m.end());
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assert(m.key_comp() == C(4));
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assert(std::move(m).extract().get_allocator() == A1(5));
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}
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}
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int main(int, char**) {
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test();
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return 0;
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}
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