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
10
11// <map>
12
13// class map
14
15// mapped_type& operator[](key_type&& k);
16
17#include <map>
18#include <cassert>
19
20#include "test_macros.h"
21#include "count_new.h"
22#include "MoveOnly.h"
23#include "min_allocator.h"
24#include "container_test_types.h"
25
26int main(int, char**) {
27 {
28 std::map<MoveOnly, double> m;
29 assert(m.size() == 0);
30 assert(m[1] == 0.0);
31 assert(m.size() == 1);
32 m[1] = -1.5;
33 assert(m[1] == -1.5);
34 assert(m.size() == 1);
35 assert(m[6] == 0);
36 assert(m.size() == 2);
37 m[6] = 6.5;
38 assert(m[6] == 6.5);
39 assert(m.size() == 2);
40 }
41 {
42 typedef std::pair<const MoveOnly, double> V;
43 std::map<MoveOnly, double, std::less<MoveOnly>, min_allocator<V>> m;
44 assert(m.size() == 0);
45 assert(m[1] == 0.0);
46 assert(m.size() == 1);
47 m[1] = -1.5;
48 assert(m[1] == -1.5);
49 assert(m.size() == 1);
50 assert(m[6] == 0);
51 assert(m.size() == 2);
52 m[6] = 6.5;
53 assert(m[6] == 6.5);
54 assert(m.size() == 2);
55 }
56 {
57 // Use "container_test_types.h" to check what arguments get passed
58 // to the allocator for operator[]
59 using Container = TCT::map<>;
60 using Key = Container::key_type;
61 using MappedType = Container::mapped_type;
62 ConstructController* cc = getConstructController();
63 cc->reset();
64 {
65 Container c;
66 Key k(1);
67 cc->expect<std::piecewise_construct_t const&, std::tuple<Key&&>&&, std::tuple<>&&>();
68 MappedType& mref = c[std::move(k)];
69 assert(!cc->unchecked());
70 {
71 Key k2(1);
72 DisableAllocationGuard g;
73 MappedType& mref2 = c[std::move(k2)];
74 assert(&mref == &mref2);
75 }
76 }
77 }
78
79 return 0;
80}
81

source code of libcxx/test/std/containers/associative/map/map.access/index_rv_key.pass.cpp