1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10
11 // <string_view>
12
13 // constexpr const _CharT* data() const noexcept;
14
15 #include <string_view>
16 #include <cassert>
17
18 #include "test_macros.h"
19
20 template <typename CharT>
test(const CharT * s,size_t len)21 void test ( const CharT *s, size_t len ) {
22 std::basic_string_view<CharT> sv ( s, len );
23 assert ( sv.length() == len );
24 assert ( sv.data() == s );
25 #if TEST_STD_VER > 14
26 // make sure we pick up std::data, too!
27 assert ( sv.data() == std::data(sv));
28 #endif
29 }
30
main()31 int main () {
32 test ( "ABCDE", 5 );
33 test ( "a", 1 );
34
35 test ( L"ABCDE", 5 );
36 test ( L"a", 1 );
37
38 #if TEST_STD_VER >= 11
39 test ( u"ABCDE", 5 );
40 test ( u"a", 1 );
41
42 test ( U"ABCDE", 5 );
43 test ( U"a", 1 );
44 #endif
45
46 #if TEST_STD_VER > 11
47 {
48 constexpr const char *s = "ABC";
49 constexpr std::basic_string_view<char> sv( s, 2 );
50 static_assert( sv.length() == 2, "" );
51 static_assert( sv.data() == s, "" );
52 }
53 #endif
54 }
55