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