libcxx/test/std/strings/string.view/string.view.io/stream_insert.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: libcpp-has-no-localization
  10
  11 // <string>
  12
  13 // template<class charT, class traits, class Allocator>
  14 //   basic_ostream<charT, traits>&
  15 //   operator<<(basic_ostream<charT, traits>& os,
  16 //              const basic_string_view<charT,traits> str);
  17
  18 #include <string_view>
  19 #include <sstream>
  20 #include <cassert>
  21
  22 #include "test_macros.h"
  23
  24 using std::string_view;
  25 using std::wstring_view;
  26
  27 int main(int, char**)
  28 {
  29     {
  30         std::ostringstream out;
  31         string_view sv("some text");
  32         out << sv;
  33         assert(out.good());
  34         assert(sv == out.str());
  35     }
  36     {
  37         std::ostringstream out;
  38         std::string s("some text");
  39         string_view sv(s);
  40         out.width(12);
  41         out << sv;
  42         assert(out.good());
  43         assert("   " + s == out.str());
  44     }
  45     {
  46         std::wostringstream out;
  47         wstring_view sv(L"some text");
  48         out << sv;
  49         assert(out.good());
  50         assert(sv == out.str());
  51     }
  52     {
  53         std::wostringstream out;
  54         std::wstring s(L"some text");
  55         wstring_view sv(s);
  56         out.width(12);
  57         out << sv;
  58         assert(out.good());
  59         assert(L"   " + s == out.str());
  60     }
  61
  62   return 0;
  63 }