libcxx/test/std/input.output/iostream.format/ext.manip/get_time.pass.cpp

   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 // REQUIRES: locale.en_US.UTF-8
  10
  11 // <iomanip>
  12
  13 // template <class charT> T9 get_time(struct tm* tmb, const charT* fmt);
  14
  15 #include <iomanip>
  16 #include <istream>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20 #include "platform_support.h" // locale name macros
  21
  22 template <class CharT>
  23 struct testbuf
  24     : public std::basic_streambuf<CharT>
  25 {
  26     typedef std::basic_string<CharT> string_type;
  27     typedef std::basic_streambuf<CharT> base;
  28 private:
  29     string_type str_;
  30 public:
  31
  32     testbuf() {}
  33     testbuf(const string_type& str)
  34         : str_(str)
  35     {
  36         base::setg(const_cast<CharT*>(str_.data()),
  37                    const_cast<CharT*>(str_.data()),
  38                    const_cast<CharT*>(str_.data()) + str_.size());
  39     }
  40 };
  41
  42 int main(int, char**)
  43 {
  44     {
  45         testbuf<char> sb("  Sat Dec 31 23:55:59 2061");
  46         std::istream is(&sb);
  47         is.imbue(std::locale(LOCALE_en_US_UTF_8));
  48         std::tm t = {};
  49         is >> std::get_time(&t, "%a %b %d %H:%M:%S %Y");
  50         assert(t.tm_sec == 59);
  51         assert(t.tm_min == 55);
  52         assert(t.tm_hour == 23);
  53         assert(t.tm_mday == 31);
  54         assert(t.tm_mon == 11);
  55         assert(t.tm_year == 161);
  56         assert(t.tm_wday == 6);
  57         assert(is.eof());
  58         assert(!is.fail());
  59     }
  60 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  61     {
  62         testbuf<wchar_t> sb(L"  Sat Dec 31 23:55:59 2061");
  63         std::wistream is(&sb);
  64         is.imbue(std::locale(LOCALE_en_US_UTF_8));
  65         std::tm t = {};
  66         is >> std::get_time(&t, L"%a %b %d %H:%M:%S %Y");
  67         assert(t.tm_sec == 59);
  68         assert(t.tm_min == 55);
  69         assert(t.tm_hour == 23);
  70         assert(t.tm_mday == 31);
  71         assert(t.tm_mon == 11);
  72         assert(t.tm_year == 161);
  73         assert(t.tm_wday == 6);
  74         assert(is.eof());
  75         assert(!is.fail());
  76     }
  77 #endif
  78
  79   return 0;
  80 }