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 // <locale>
11 
12 // template <class charT> class collate_byname
13 
14 // string_type transform(const charT* low, const charT* high) const;
15 
16 // REQUIRES: locale.en_US.UTF-8
17 
18 #include <locale>
19 #include <string>
20 #include <cassert>
21 
22 #include <stdio.h>
23 
24 #include "platform_support.h" // locale name macros
25 
main()26 int main()
27 {
28     // Ensure that the default locale is not C.  If it is, the second tests will fail.
29     putenv(const_cast<char*>("LANG=" LOCALE_en_US_UTF_8));
30     {
31         std::locale l(LOCALE_en_US_UTF_8);
32         {
33             std::string x("1234");
34             const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
35             assert(f.transform(x.data(), x.data() + x.size()) != x);
36         }
37         {
38             std::wstring x(L"1234");
39             const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
40             assert(f.transform(x.data(), x.data() + x.size()) != x);
41         }
42     }
43     {
44         std::locale l("");
45         {
46             std::string x("1234");
47             const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
48             assert(f.transform(x.data(), x.data() + x.size()) != x);
49         }
50         {
51             std::wstring x(L"1234");
52             const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
53             assert(f.transform(x.data(), x.data() + x.size()) != x);
54         }
55     }
56     {
57         std::locale l("C");
58         {
59             std::string x("1234");
60             const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
61             assert(f.transform(x.data(), x.data() + x.size()) == x);
62         }
63         {
64             std::wstring x(L"1234");
65             const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
66             assert(f.transform(x.data(), x.data() + x.size()) == x);
67         }
68     }
69 }
70