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 // <array>
10
11 // An string is a contiguous container
12
13 #include <string>
14 #include <cassert>
15
16 #include "test_macros.h"
17 #include "test_allocator.h"
18 #include "min_allocator.h"
19
20
21 template <class C>
test_contiguous(const C & c)22 TEST_CONSTEXPR_CXX20 void test_contiguous ( const C &c )
23 {
24 for ( size_t i = 0; i < c.size(); ++i )
25 assert ( *(c.begin() + static_cast<typename C::difference_type>(i)) == *(std::addressof(*c.begin()) + i));
26 }
27
test()28 TEST_CONSTEXPR_CXX20 bool test() {
29 {
30 typedef std::string S;
31 test_contiguous(S());
32 test_contiguous(S("1"));
33 test_contiguous(S("1234567890123456789012345678901234567890123456789012345678901234567890"));
34 }
35
36 {
37 typedef test_allocator<char> A;
38 typedef std::basic_string<char, std::char_traits<char>, A> S;
39 test_contiguous(S(A(3)));
40 test_contiguous(S("1", A(5)));
41 test_contiguous(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
42 }
43 #if TEST_STD_VER >= 11
44 {
45 typedef min_allocator<char> A;
46 typedef std::basic_string<char, std::char_traits<char>, A> S;
47 test_contiguous(S(A{}));
48 test_contiguous(S("1", A()));
49 test_contiguous(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
50 }
51 #endif
52
53 return true;
54 }
55
main(int,char **)56 int main(int, char**)
57 {
58 test();
59 #if TEST_STD_VER > 17
60 static_assert(test());
61 #endif
62
63 return 0;
64 }
65