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 basic_string_view () noexcept;
13 
14 #include <string_view>
15 #include <cassert>
16 
17 #include "test_macros.h"
18 
19 template<typename T>
test()20 void test () {
21 #if TEST_STD_VER > 11
22     {
23     ASSERT_NOEXCEPT(T());
24 
25     constexpr T sv1;
26     static_assert ( sv1.size() == 0, "" );
27     static_assert ( sv1.empty(), "");
28     }
29 #endif
30 
31     {
32     T sv1;
33     assert ( sv1.size() == 0 );
34     assert ( sv1.empty());
35     }
36 }
37 
main(int,char **)38 int main(int, char**) {
39     test<std::string_view> ();
40     test<std::u16string_view> ();
41 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
42     test<std::u8string_view> ();
43 #endif
44     test<std::u32string_view> ();
45     test<std::wstring_view> ();
46 
47 
48   return 0;
49 }
50