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// iterator begin() noexcept;
16// const_iterator begin() const noexcept
17// iterator end() noexcept;
18// const_iterator end() const noexcept;
19//
20// const_iterator cbegin() const noexcept;
21// const_iterator cend() const noexcept;
22
23#include <cassert>
24#include <cstddef>
25#include <deque>
26#include <flat_map>
27#include <functional>
28#include <string>
29
30#include "MinSequenceContainer.h"
31#include "test_macros.h"
32#include "min_allocator.h"
33
34template <class KeyContainer, class ValueContainer>
35void test() {
36 using Key = typename KeyContainer::value_type;
37 using Value = typename ValueContainer::value_type;
38 using M = std::flat_multimap<Key, Value, std::less<Key>, KeyContainer, ValueContainer>;
39
40 M m = {{1, 'a'}, {1, 'z'}, {2, 'b'}, {3, 'a'}, {3, 'b'}, {3, 'c'}, {4, 'd'}};
41 const M& cm = m;
42 ASSERT_SAME_TYPE(decltype(m.begin()), typename M::iterator);
43 ASSERT_SAME_TYPE(decltype(m.cbegin()), typename M::const_iterator);
44 ASSERT_SAME_TYPE(decltype(cm.begin()), typename M::const_iterator);
45 ASSERT_SAME_TYPE(decltype(m.end()), typename M::iterator);
46 ASSERT_SAME_TYPE(decltype(m.cend()), typename M::const_iterator);
47 ASSERT_SAME_TYPE(decltype(cm.end()), typename M::const_iterator);
48 static_assert(noexcept(m.begin()));
49 static_assert(noexcept(cm.begin()));
50 static_assert(noexcept(m.cbegin()));
51 static_assert(noexcept(m.end()));
52 static_assert(noexcept(cm.end()));
53 static_assert(noexcept(m.cend()));
54 assert(m.size() == 7);
55 assert(std::distance(m.begin(), m.end()) == 7);
56 assert(std::distance(cm.begin(), cm.end()) == 7);
57 assert(std::distance(m.cbegin(), m.cend()) == 7);
58 typename M::iterator i; // default-construct
59 i = m.begin(); // move-assignment
60 typename M::const_iterator k = i; // converting constructor
61 assert(i == k); // comparison
62 assert(i->first == 1); // operator->
63 assert(i->second == 'a'); // operator->
64 ++i; // pre-increment
65 assert(i->first == 1); // operator->
66 assert(i->second == 'z'); // operator->
67 i = i + 3; // operator+
68 assert((*i).first == 3); // operator*
69 assert((*i).second == 'b'); // operator*
70 i += 3; // operator+=
71 assert(i == m.end()); // operator==
72 --i; // pre-decrement
73 assert(i->first == 4); // operator->
74 assert(i->second == 'd'); // operator->
75 i = i - 2; // operator-
76 assert(i->first == 3); // operator->
77 assert(i->second == 'b'); // operator->
78 i -= 2; // operator-=
79 assert(i > m.begin()); // operator>
80}
81
82int main(int, char**) {
83 test<std::vector<int>, std::vector<char>>();
84 test<std::deque<int>, std::vector<char>>();
85 test<MinSequenceContainer<int>, MinSequenceContainer<char>>();
86 test<std::vector<int, min_allocator<int>>, std::vector<char, min_allocator<char>>>();
87
88 {
89 // N3644 testing
90 using C = std::flat_multimap<int, char>;
91 C::iterator ii1{}, ii2{};
92 C::iterator ii4 = ii1;
93 C::const_iterator cii{};
94 assert(ii1 == ii2);
95 assert(ii1 == ii4);
96 assert(!(ii1 != ii2));
97
98 assert((ii1 == cii));
99 assert((cii == ii1));
100 assert(!(ii1 != cii));
101 assert(!(cii != ii1));
102 }
103
104 return 0;
105}
106

source code of libcxx/test/std/containers/container.adaptors/flat.multimap/flat.multimap.iterators/iterator.pass.cpp