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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_syncbuf;
// protected:
// [syncstream.syncbuf.virtuals], overridden virtual functions
// int sync() override;
#include <syncstream>
#include <sstream>
#include <ostream>
#include <cassert>
#include "test_macros.h"
template <class CharT>
void test_sync(bool emit_on_sync) {
std::basic_stringbuf<CharT> base;
std::basic_syncbuf<CharT> buff(&base);
std::basic_ostream<CharT> out(&buff);
buff.set_emit_on_sync(emit_on_sync);
out << 'a';
out.flush(); // This is an indirect call to sync.
if (emit_on_sync) {
assert(base.str().size() == 1);
assert(base.str()[0] == CharT('a'));
} else
assert(base.str().empty());
}
int main(int, char**) {
test_sync<char>(true);
test_sync<char>(false);
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test_sync<wchar_t>(true);
test_sync<wchar_t>(false);
#endif
return 0;
}
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