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 | // <vector> |
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' (except 'at') |
23 | |
24 | #include <vector> |
25 | #include <cassert> |
26 | #include <stdexcept> |
27 | |
28 | #include "min_allocator.h" |
29 | #include "test_macros.h" |
30 | |
31 | template <class C> |
32 | TEST_CONSTEXPR_CXX20 C make(int size, int start) { |
33 | C c; |
34 | for (int i = 0; i < size; ++i) |
35 | c.push_back(start + i); |
36 | return c; |
37 | } |
38 | |
39 | template <class Vector> |
40 | TEST_CONSTEXPR_CXX20 void test_get_basic(Vector& c, int start_value) { |
41 | const int n = static_cast<int>(c.size()); |
42 | for (int i = 0; i < n; ++i) |
43 | assert(c[i] == start_value + i); |
44 | for (int i = 0; i < n; ++i) |
45 | assert(c.at(i) == start_value + i); |
46 | |
47 | #ifndef TEST_HAS_NO_EXCEPTIONS |
48 | if (!TEST_IS_CONSTANT_EVALUATED) { |
49 | try { |
50 | TEST_IGNORE_NODISCARD c.at(n); |
51 | assert(false); |
52 | } catch (const std::out_of_range&) { |
53 | } |
54 | } |
55 | #endif |
56 | |
57 | assert(c.front() == start_value); |
58 | assert(c.back() == start_value + n - 1); |
59 | } |
60 | |
61 | template <class Vector> |
62 | TEST_CONSTEXPR_CXX20 void test_get() { |
63 | int start_value = 35; |
64 | Vector c = make<Vector>(10, start_value); |
65 | const Vector& cc = c; |
66 | test_get_basic(c, start_value); |
67 | test_get_basic(cc, start_value); |
68 | } |
69 | |
70 | template <class Vector> |
71 | TEST_CONSTEXPR_CXX20 void test_set() { |
72 | int start_value = 35; |
73 | const int n = 10; |
74 | Vector c = make<Vector>(n, start_value); |
75 | |
76 | for (int i = 0; i < n; ++i) { |
77 | assert(c[i] == start_value + i); |
78 | c[i] = start_value + i + 1; |
79 | assert(c[i] == start_value + i + 1); |
80 | } |
81 | for (int i = 0; i < n; ++i) { |
82 | assert(c.at(i) == start_value + i + 1); |
83 | c.at(i) = start_value + i + 2; |
84 | assert(c.at(i) == start_value + i + 2); |
85 | } |
86 | |
87 | assert(c.front() == start_value + 2); |
88 | c.front() = start_value + 3; |
89 | assert(c.front() == start_value + 3); |
90 | |
91 | assert(c.back() == start_value + n + 1); |
92 | c.back() = start_value + n + 2; |
93 | assert(c.back() == start_value + n + 2); |
94 | } |
95 | |
96 | template <class Vector> |
97 | TEST_CONSTEXPR_CXX20 void test() { |
98 | test_get<Vector>(); |
99 | test_set<Vector>(); |
100 | |
101 | Vector c; |
102 | const Vector& cc = c; |
103 | ASSERT_SAME_TYPE(typename Vector::reference, decltype(c[0])); |
104 | ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc[0])); |
105 | |
106 | ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.at(0))); |
107 | ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.at(0))); |
108 | |
109 | ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.front())); |
110 | ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.front())); |
111 | |
112 | ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.back())); |
113 | ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.back())); |
114 | } |
115 | |
116 | TEST_CONSTEXPR_CXX20 bool tests() { |
117 | test<std::vector<int> >(); |
118 | #if TEST_STD_VER >= 11 |
119 | test<std::vector<int, min_allocator<int> > >(); |
120 | test<std::vector<int, safe_allocator<int> > >(); |
121 | #endif |
122 | return true; |
123 | } |
124 | |
125 | int main(int, char**) { |
126 | tests(); |
127 | #if TEST_STD_VER > 17 |
128 | static_assert(tests()); |
129 | #endif |
130 | return 0; |
131 | } |
132 | |