1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
10
11// <flat_map>
12
13// class flat_multimap
14
15// template<class K> bool contains(const K& x) const;
16
17#include <cassert>
18#include <flat_map>
19#include <functional>
20#include <string>
21#include <utility>
22#include <deque>
23
24#include "MinSequenceContainer.h"
25#include "../helpers.h"
26#include "test_macros.h"
27#include "min_allocator.h"
28
29// Constraints: The qualified-id Compare::is_transparent is valid and denotes a type.
30template <class M>
31concept CanContains = requires(M m, Transparent<int> k) { m.contains(k); };
32using TransparentMap = std::flat_multimap<int, double, TransparentComparator>;
33using NonTransparentMap = std::flat_multimap<int, double, NonTransparentComparator>;
34static_assert(CanContains<TransparentMap>);
35static_assert(CanContains<const TransparentMap>);
36static_assert(!CanContains<NonTransparentMap>);
37static_assert(!CanContains<const NonTransparentMap>);
38
39template <class KeyContainer, class ValueContainer>
40void test() {
41 using Key = typename KeyContainer::value_type;
42 using Value = typename ValueContainer::value_type;
43 using M = std::flat_multimap<Key, Value, TransparentComparator, KeyContainer, ValueContainer>;
44
45 M m = {{"alpha", 1}, {"beta", 2}, {"beta", 0}, {"epsilon", 3}, {"eta", 4}, {"eta", 1}, {"gamma", 5}};
46 ASSERT_SAME_TYPE(decltype(m.contains(Transparent<std::string>{"abc"})), bool);
47 ASSERT_SAME_TYPE(decltype(std::as_const(m).contains(Transparent<std::string>{"b"})), bool);
48 assert(m.contains(Transparent<std::string>{"alpha"}) == true);
49 assert(m.contains(Transparent<std::string>{"beta"}) == true);
50 assert(m.contains(Transparent<std::string>{"epsilon"}) == true);
51 assert(m.contains(Transparent<std::string>{"eta"}) == true);
52 assert(m.contains(Transparent<std::string>{"gamma"}) == true);
53 assert(m.contains(Transparent<std::string>{"al"}) == false);
54 assert(m.contains(Transparent<std::string>{""}) == false);
55 assert(m.contains(Transparent<std::string>{"g"}) == false);
56}
57
58int main(int, char**) {
59 test<std::vector<std::string>, std::vector<int>>();
60 test<std::deque<std::string>, std::vector<int>>();
61 test<MinSequenceContainer<std::string>, MinSequenceContainer<int>>();
62 test<std::vector<std::string, min_allocator<std::string>>, std::vector<int, min_allocator<int>>>();
63
64 {
65 bool transparent_used = false;
66 TransparentComparator c(transparent_used);
67 std::flat_multimap<int, int, TransparentComparator> m(std::sorted_equivalent, {{1, 1}, {1, 2}, {2, 2}, {3, 3}}, c);
68 assert(!transparent_used);
69 auto b = m.contains(Transparent<int>{3});
70 assert(b);
71 assert(transparent_used);
72 }
73 {
74 // LWG4239 std::string and C string literal
75 using M = std::flat_multimap<std::string, int, std::less<>>;
76 M m{{"alpha", 1}, {"beta", 2}, {"beta", 1}, {"eta", 3}, {"gamma", 3}};
77 assert(m.contains("beta") == true);
78 assert(m.contains("charlie") == false);
79 }
80 return 0;
81}
82

source code of libcxx/test/std/containers/container.adaptors/flat.multimap/flat.multimap.operations/contains_transparent.pass.cpp