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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: no-localization
// UNSUPPORTED: libcpp-has-no-experimental-syncstream
// <syncstream>
// template <class charT, class traits, class Allocator>
// class basic_osyncstream;
// void emit();
#include <syncstream>
#include <sstream>
#include <cassert>
#include "test_macros.h"
template <class CharT>
void test() {
using OS = std::basic_osyncstream<CharT>;
using SS = std::basic_ostringstream<CharT>;
CharT c = 'f';
SS ss;
OS out(ss);
out << c;
assert(ss.str().empty());
out.emit();
assert(ss.str()[0] == c);
}
int main(int, char**) {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
}
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