| // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // 29.8.4.4 basic_ostringstream member functions [ostringstream.members] |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| // { dg-require-effective-target cxx11-abi } |
| |
| #include <sstream> |
| #include <testsuite_hooks.h> |
| #include <testsuite_allocator.h> |
| |
| void test01() |
| { |
| const std::string s0 = "this is not a short string"; |
| std::ostringstream ss; |
| ss.str(s0); |
| VERIFY( ss.str() == s0 ); |
| VERIFY( ss.str() == s0 ); |
| |
| using Alloc = __gnu_test::uneq_allocator<char>; |
| const Alloc a1(1); |
| std::basic_string<char, std::char_traits<char>, Alloc> s1 = ss.str(a1); |
| VERIFY( s1.get_allocator() == a1 ); |
| VERIFY( ss.str(a1).get_allocator() == a1 ); |
| VERIFY( ss.str(a1) == s1 ); |
| VERIFY( std::move(ss).str(a1) == s1 ); |
| VERIFY( std::move(ss).str(a1) == s1 ); |
| |
| const Alloc a2(2); |
| VERIFY( ss.str(a2).get_allocator() == a2 ); |
| VERIFY( ss.str(a2) == s1 ); |
| |
| VERIFY( std::move(ss).str() == s0 ); |
| VERIFY( std::move(ss).str().empty() ); |
| VERIFY( ss.str().empty() ); |
| VERIFY( ss.str(a1).empty() ); |
| } |
| |
| void test02() |
| { |
| std::ostringstream ss("123"); |
| std::string str = "ABCDEF"; |
| ss << str; |
| VERIFY( ss.str() == str ); |
| VERIFY( std::move(ss).str() == str ); |
| VERIFY( std::move(ss).str().empty() ); |
| } |
| |
| void test03() |
| { |
| std::ostringstream ss; |
| using Alloc = __gnu_test::tracker_allocator<char>; |
| using Str = std::basic_string<char, std::char_traits<char>, Alloc>; |
| Str s1 = "string that is not short, quite long even"; |
| auto count1 = __gnu_test::tracker_allocator_counter::get_allocation_count(); |
| ss.str(s1); |
| auto count2 = __gnu_test::tracker_allocator_counter::get_allocation_count(); |
| VERIFY( count1 == count2 ); |
| VERIFY( ss.str() == s1.c_str() ); |
| } |
| |
| void test04() |
| { |
| std::ostringstream ss; |
| const std::string str = "Another quite long string, not at all short"; |
| std::string str2 = str; |
| ss.str(std::move(str2)); |
| VERIFY( str2.empty() ); |
| VERIFY( ss.str() == str ); |
| } |
| |
| int main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| test04(); |
| } |