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
10 // <string_view>
11
12 // constexpr const _CharT* data() const noexcept;
13
14 #include <string_view>
15 #include <cassert>
16
17 #include "test_macros.h"
18
19 template <typename CharT>
test(const CharT * s,size_t len)20 void test ( const CharT *s, size_t len ) {
21 std::basic_string_view<CharT> sv ( s, len );
22 assert ( sv.length() == len );
23 assert ( sv.data() == s );
24 #if TEST_STD_VER > 14
25 // make sure we pick up std::data, too!
26 assert ( sv.data() == std::data(sv));
27 #endif
28 }
29
main(int,char **)30 int main(int, char**) {
31 test ( "ABCDE", 5 );
32 test ( "a", 1 );
33
34 test ( L"ABCDE", 5 );
35 test ( L"a", 1 );
36
37 #if TEST_STD_VER >= 11
38 test ( u"ABCDE", 5 );
39 test ( u"a", 1 );
40
41 test ( U"ABCDE", 5 );
42 test ( U"a", 1 );
43 #endif
44
45 #if TEST_STD_VER > 11
46 {
47 constexpr const char *s = "ABC";
48 constexpr std::basic_string_view<char> sv( s, 2 );
49 static_assert( sv.length() == 2, "" );
50 static_assert( sv.data() == s, "" );
51 }
52 #endif
53
54 return 0;
55 }
56