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 // template<class Allocator> 14 // basic_string_view(const basic_string<_CharT, _Traits, Allocator>& _str) noexcept 15 16 17 #include <string_view> 18 #include <string> 19 #include <cassert> 20 21 #include "test_macros.h" 22 23 struct dummy_char_traits : public std::char_traits<char> {}; 24 25 template<typename CharT, typename Traits> 26 void test ( const std::basic_string<CharT, Traits> &str ) { 27 std::basic_string_view<CharT, Traits> sv1 ( str ); 28 assert ( sv1.size() == str.size()); 29 assert ( sv1.data() == str.data()); 30 } 31 32 int main () { 33 34 test ( std::string("QBCDE") ); 35 test ( std::string("") ); 36 test ( std::string() ); 37 38 test ( std::wstring(L"QBCDE") ); 39 test ( std::wstring(L"") ); 40 test ( std::wstring() ); 41 42 #if TEST_STD_VER >= 11 43 test ( std::u16string{u"QBCDE"} ); 44 test ( std::u16string{u""} ); 45 test ( std::u16string{} ); 46 47 test ( std::u32string{U"QBCDE"} ); 48 test ( std::u32string{U""} ); 49 test ( std::u32string{} ); 50 #endif 51 52 test ( std::basic_string<char, dummy_char_traits>("QBCDE") ); 53 test ( std::basic_string<char, dummy_char_traits>("") ); 54 test ( std::basic_string<char, dummy_char_traits>() ); 55 56 } 57
