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// UNSUPPORTED: c++03, c++11
10
11#include <string>
12#include <cassert>
13
14#include "test_macros.h"
15
16#ifndef TEST_HAS_NO_CHAR8_T
17typedef std::u8string u8string;
18#else
19typedef std::string u8string;
20#endif
21
22int main(int, char**) {
23 {
24 using namespace std::literals::string_literals;
25
26 ASSERT_SAME_TYPE(decltype("Hi"s), std::string);
27 ASSERT_SAME_TYPE(decltype(u8"Hi"s), u8string);
28#ifndef TEST_HAS_NO_WIDE_CHARACTERS
29 ASSERT_SAME_TYPE(decltype(L"Hi"s), std::wstring);
30#endif
31 ASSERT_SAME_TYPE(decltype(u"Hi"s), std::u16string);
32 ASSERT_SAME_TYPE(decltype(U"Hi"s), std::u32string);
33
34 std::string foo;
35#ifndef TEST_HAS_NO_WIDE_CHARACTERS
36 std::wstring Lfoo;
37#endif
38 u8string u8foo;
39 std::u16string ufoo;
40 std::u32string Ufoo;
41
42 foo = ""s;
43 assert(foo.size() == 0);
44 u8foo = u8""s;
45 assert(u8foo.size() == 0);
46#ifndef TEST_HAS_NO_WIDE_CHARACTERS
47 Lfoo = L""s;
48 assert(Lfoo.size() == 0);
49#endif
50 ufoo = u""s;
51 assert(ufoo.size() == 0);
52 Ufoo = U""s;
53 assert(Ufoo.size() == 0);
54
55 foo = " "s;
56 assert(foo.size() == 1);
57 u8foo = u8" "s;
58 assert(u8foo.size() == 1);
59#ifndef TEST_HAS_NO_WIDE_CHARACTERS
60 Lfoo = L" "s;
61 assert(Lfoo.size() == 1);
62#endif
63 ufoo = u" "s;
64 assert(ufoo.size() == 1);
65 Ufoo = U" "s;
66 assert(Ufoo.size() == 1);
67
68 foo = "ABC"s;
69 assert(foo == "ABC");
70 assert(foo == std::string("ABC"));
71 u8foo = u8"ABC"s;
72 assert(u8foo == u8"ABC");
73 assert(u8foo == u8string(u8"ABC"));
74#ifndef TEST_HAS_NO_WIDE_CHARACTERS
75 Lfoo = L"ABC"s;
76 assert(Lfoo == L"ABC");
77 assert(Lfoo == std::wstring(L"ABC"));
78#endif
79 ufoo = u"ABC"s;
80 assert(ufoo == u"ABC");
81 assert(ufoo == std::u16string(u"ABC"));
82 Ufoo = U"ABC"s;
83 assert(Ufoo == U"ABC");
84 assert(Ufoo == std::u32string(U"ABC"));
85 }
86 {
87 using namespace std::literals;
88 std::string foo = ""s;
89 assert(foo == std::string());
90 }
91 {
92 using namespace std;
93 std::string foo = ""s;
94 assert(foo == std::string());
95 }
96
97 return 0;
98}
99

source code of libcxx/test/std/strings/basic.string.literals/literal.pass.cpp