77 lines
2.0 KiB
C++
77 lines
2.0 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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// key_compare key_comp() const;
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// value_compare value_comp() const;
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#include <cassert>
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#include <flat_set>
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#include <functional>
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#include <utility>
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#include <vector>
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#include "test_macros.h"
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void test() {
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{
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using M = std::flat_multiset<int>;
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using Comp = std::less<int>; // the default
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M m = {};
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ASSERT_SAME_TYPE(M::key_compare, Comp);
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ASSERT_SAME_TYPE(decltype(m.key_comp()), Comp);
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ASSERT_SAME_TYPE(decltype(m.value_comp()), Comp);
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Comp kc = m.key_comp();
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assert(kc(1, 2));
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assert(!kc(2, 1));
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auto vc = m.value_comp();
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assert(vc(1, 2));
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assert(!vc(2, 1));
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}
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{
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using Comp = std::function<bool(int, int)>;
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using M = std::flat_multiset<int, Comp>;
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Comp comp = std::greater<int>();
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M m({}, comp);
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ASSERT_SAME_TYPE(M::key_compare, Comp);
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ASSERT_SAME_TYPE(decltype(m.key_comp()), Comp);
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ASSERT_SAME_TYPE(decltype(m.value_comp()), Comp);
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Comp kc = m.key_comp();
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assert(!kc(1, 2));
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assert(kc(2, 1));
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auto vc = m.value_comp();
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assert(!vc(1, 2));
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assert(vc(2, 1));
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}
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{
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using Comp = std::less<>;
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using M = std::flat_multiset<int, Comp>;
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M m = {};
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ASSERT_SAME_TYPE(M::key_compare, Comp);
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ASSERT_SAME_TYPE(decltype(m.key_comp()), Comp);
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ASSERT_SAME_TYPE(decltype(m.value_comp()), Comp);
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Comp kc = m.key_comp();
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assert(kc(1, 2));
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assert(!kc(2, 1));
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auto vc = m.value_comp();
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auto a = std::make_pair(1, 2);
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ASSERT_SAME_TYPE(decltype(vc(a, a)), bool);
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assert(vc(1, 2));
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assert(!vc(2, 1));
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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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