xref: /llvm-project/libcxx/test/std/containers/sequences/deque/deque.capacity/access.pass.cpp (revision 10ec9276d40024c23a481e6671dad1521151dd85)
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 // <deque>
10 
11 //       reference operator[](size_type __i);
12 // const_reference operator[](size_type __i) const;
13 //
14 //       reference at(size_type __i);
15 // const_reference at(size_type __i) const;
16 //
17 //       reference front();
18 // const_reference front() const;
19 //
20 //       reference back();
21 // const_reference back() const;
22 // libc++ marks these as 'noexcept'
23 
24 #include "asan_testing.h"
25 #include <deque>
26 #include <cassert>
27 
28 #include "min_allocator.h"
29 #include "test_macros.h"
30 
31 template <class C>
32 C
make(int size,int start=0)33 make(int size, int start = 0 )
34 {
35     const int b = 4096 / sizeof(int);
36     int init = 0;
37     if (start > 0)
38     {
39         init = (start+1) / b + ((start+1) % b != 0);
40         init *= b;
41         --init;
42     }
43     C c(init, 0);
44     for (int i = 0; i < init-start; ++i)
45         c.pop_back();
46     for (int i = 0; i < size; ++i)
47         c.push_back(i);
48     for (int i = 0; i < start; ++i)
49         c.pop_front();
50     return c;
51 }
52 
main(int,char **)53 int main(int, char**)
54 {
55     {
56         typedef std::deque<int> C;
57         C c = make<std::deque<int> >(10);
58         ASSERT_SAME_TYPE(decltype(c[0]), C::reference);
59         LIBCPP_ASSERT_NOEXCEPT(   c[0]);
60         LIBCPP_ASSERT_NOEXCEPT(   c.front());
61         ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
62         LIBCPP_ASSERT_NOEXCEPT(   c.back());
63         ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
64         for (int i = 0; i < 10; ++i)
65             assert(c[i] == i);
66         for (int i = 0; i < 10; ++i)
67             assert(c.at(i) == i);
68         assert(c.front() == 0);
69         assert(c.back() == 9);
70         LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c));
71     }
72     {
73         typedef std::deque<int> C;
74         const C c = make<std::deque<int> >(10);
75         ASSERT_SAME_TYPE(decltype(c[0]), C::const_reference);
76         LIBCPP_ASSERT_NOEXCEPT(   c[0]);
77         LIBCPP_ASSERT_NOEXCEPT(   c.front());
78         ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
79         LIBCPP_ASSERT_NOEXCEPT(   c.back());
80         ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
81         for (int i = 0; i < 10; ++i)
82             assert(c[i] == i);
83         for (int i = 0; i < 10; ++i)
84             assert(c.at(i) == i);
85         assert(c.front() == 0);
86         assert(c.back() == 9);
87         LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c));
88     }
89 #if TEST_STD_VER >= 11
90     {
91         typedef std::deque<int, min_allocator<int>> C;
92         C c = make<std::deque<int, min_allocator<int>> >(10);
93         ASSERT_SAME_TYPE(decltype(c[0]), C::reference);
94         LIBCPP_ASSERT_NOEXCEPT(   c[0]);
95         LIBCPP_ASSERT_NOEXCEPT(   c.front());
96         ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
97         LIBCPP_ASSERT_NOEXCEPT(   c.back());
98         ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
99         for (int i = 0; i < 10; ++i)
100             assert(c[i] == i);
101         for (int i = 0; i < 10; ++i)
102             assert(c.at(i) == i);
103         assert(c.front() == 0);
104         assert(c.back() == 9);
105         LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c));
106     }
107     {
108         typedef std::deque<int, min_allocator<int>> C;
109         const C c = make<std::deque<int, min_allocator<int>> >(10);
110         ASSERT_SAME_TYPE(decltype(c[0]), C::const_reference);
111         LIBCPP_ASSERT_NOEXCEPT(   c[0]);
112         LIBCPP_ASSERT_NOEXCEPT(   c.front());
113         ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
114         LIBCPP_ASSERT_NOEXCEPT(   c.back());
115         ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
116         for (int i = 0; i < 10; ++i)
117             assert(c[i] == i);
118         for (int i = 0; i < 10; ++i)
119             assert(c.at(i) == i);
120         assert(c.front() == 0);
121         assert(c.back() == 9);
122         LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c));
123     }
124 #endif
125 
126   return 0;
127 }
128