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// mapped_type& at(const key_type& k);
14// const mapped_type& at(const key_type& k) const;
15
16#include <cassert>
17#include <deque>
18#include <flat_map>
19#include <functional>
20#include <stdexcept>
21#include <vector>
22
23#include "MinSequenceContainer.h"
24#include "min_allocator.h"
25#include "test_macros.h"
26
27template <class KeyContainer, class ValueContainer>
28void test() {
29 using P = std::pair<int, double>;
30 P ar[] = {
31 P(1, 1.5),
32 P(2, 2.5),
33 P(3, 3.5),
34 P(4, 4.5),
35 P(5, 5.5),
36 P(7, 7.5),
37 P(8, 8.5),
38 };
39 const int one = 1;
40 {
41 std::flat_map<int, double, std::less<int>, KeyContainer, ValueContainer> m(ar, ar + sizeof(ar) / sizeof(ar[0]));
42 ASSERT_SAME_TYPE(decltype(m.at(one)), double&);
43 assert(m.size() == 7);
44 assert(m.at(one) == 1.5);
45 m.at(1) = -1.5;
46 assert(m.at(1) == -1.5);
47 assert(m.at(2) == 2.5);
48 assert(m.at(3) == 3.5);
49 assert(m.at(4) == 4.5);
50 assert(m.at(5) == 5.5);
51#ifndef TEST_HAS_NO_EXCEPTIONS
52 try {
53 TEST_IGNORE_NODISCARD m.at(6);
54 assert(false);
55 } catch (std::out_of_range&) {
56 }
57#endif
58 assert(m.at(7) == 7.5);
59 assert(m.at(8) == 8.5);
60 assert(m.size() == 7);
61 }
62 {
63 const std::flat_map<int, double, std::less<int>, KeyContainer, ValueContainer> m(
64 ar, ar + sizeof(ar) / sizeof(ar[0]));
65 ASSERT_SAME_TYPE(decltype(m.at(one)), const double&);
66 assert(m.size() == 7);
67 assert(m.at(one) == 1.5);
68 assert(m.at(2) == 2.5);
69 assert(m.at(3) == 3.5);
70 assert(m.at(4) == 4.5);
71 assert(m.at(5) == 5.5);
72#ifndef TEST_HAS_NO_EXCEPTIONS
73 try {
74 TEST_IGNORE_NODISCARD m.at(6);
75 assert(false);
76 } catch (std::out_of_range&) {
77 }
78#endif
79 assert(m.at(7) == 7.5);
80 assert(m.at(8) == 8.5);
81 assert(m.size() == 7);
82 }
83}
84
85int main(int, char**) {
86 test<std::vector<int>, std::vector<double>>();
87 test<std::deque<int>, std::vector<double>>();
88 test<MinSequenceContainer<int>, MinSequenceContainer<double>>();
89 test<std::vector<int, min_allocator<int>>, std::vector<double, min_allocator<double>>>();
90
91 return 0;
92}
93

source code of libcxx/test/std/containers/container.adaptors/flat.map/flat.map.access/at.pass.cpp