libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/string-alloc.mode.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 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // <sstream>
  12
  13 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>>
  14 // class basic_istringstream
  15
  16 // template <class SAlloc>
  17 // explicit basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s, ios_base::openmode which = ios_base::in)
  18
  19 #include <sstream>
  20 #include <cassert>
  21
  22 #include "make_string.h"
  23 #include "test_allocator.h"
  24 #include "test_macros.h"
  25 #include "operator_hijacker.h"
  26
  27 #define STR(S) MAKE_STRING(CharT, S)
  28 #define SV(S) MAKE_STRING_VIEW(CharT, S)
  29
  30 template <class CharT, class Allocator>
  31 static void test() {
  32   {
  33     const std::basic_string<CharT> s(STR("testing"));
  34     const std::basic_istringstream<CharT, std::char_traits<CharT>, Allocator> ss(s);
  35     assert(ss.view() == SV("testing"));
  36   }
  37   {
  38     const std::basic_string<CharT> s(STR("testing"));
  39     const std::basic_istringstream<CharT, std::char_traits<CharT>, Allocator> ss(s, std::ios_base::binary);
  40     assert(ss.view() == SV("testing"));
  41   }
  42 }
  43
  44 int main(int, char**) {
  45   test<char, test_allocator<char>>();
  46   test<char, operator_hijacker_allocator<char>>();
  47 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  48   test<wchar_t, test_allocator<wchar_t>>();
  49   test<wchar_t, operator_hijacker_allocator<wchar_t>>();
  50 #endif
  51   return 0;
  52 }