1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4//                     The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10#include <string>
11#include <cassert>
12
13int main()
14{
15#if _LIBCPP_STD_VER > 11
16    using namespace std::literals::string_literals;
17
18    static_assert ( std::is_same<decltype(   "Hi"s), std::string>::value, "" );
19    static_assert ( std::is_same<decltype( u8"Hi"s), std::string>::value, "" );
20    static_assert ( std::is_same<decltype(  L"Hi"s), std::wstring>::value, "" );
21    static_assert ( std::is_same<decltype(  u"Hi"s), std::u16string>::value, "" );
22    static_assert ( std::is_same<decltype(  U"Hi"s), std::u32string>::value, "" );
23
24    std::string foo;
25    std::wstring Lfoo;
26    std::u16string ufoo;
27    std::u32string Ufoo;
28
29    foo  =   ""s;     assert( foo.size() == 0);
30    foo  = u8""s;     assert( foo.size() == 0);
31    Lfoo =  L""s;     assert(Lfoo.size() == 0);
32    ufoo =  u""s;     assert(ufoo.size() == 0);
33    Ufoo =  U""s;     assert(Ufoo.size() == 0);
34
35    foo  =   " "s;     assert( foo.size() == 1);
36    foo  = u8" "s;     assert( foo.size() == 1);
37    Lfoo =  L" "s;     assert(Lfoo.size() == 1);
38    ufoo =  u" "s;     assert(ufoo.size() == 1);
39    Ufoo =  U" "s;     assert(Ufoo.size() == 1);
40
41    foo  =   "ABC"s;     assert( foo ==   "ABC");   assert( foo == std::string   (  "ABC"));
42    foo  = u8"ABC"s;     assert( foo == u8"ABC");   assert( foo == std::string   (u8"ABC"));
43    Lfoo =  L"ABC"s;     assert(Lfoo ==  L"ABC");   assert(Lfoo == std::wstring  ( L"ABC"));
44    ufoo =  u"ABC"s;     assert(ufoo ==  u"ABC");   assert(ufoo == std::u16string( u"ABC"));
45    Ufoo =  U"ABC"s;     assert(Ufoo ==  U"ABC");   assert(Ufoo == std::u32string( U"ABC"));
46#endif
47}
48