57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// UNSUPPORTED: no-localization
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// UNSUPPORTED: libcpp-has-no-experimental-syncstream
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// <syncstream>
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// template <class charT, class traits, class Allocator>
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// class basic_syncbuf;
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// protected:
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// [syncstream.syncbuf.virtuals], overridden virtual functions
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// int sync() override;
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#include <syncstream>
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#include <sstream>
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#include <ostream>
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#include <cassert>
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#include "test_macros.h"
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template <class CharT>
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void test_sync(bool emit_on_sync) {
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std::basic_stringbuf<CharT> base;
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std::basic_syncbuf<CharT> buff(&base);
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std::basic_ostream<CharT> out(&buff);
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buff.set_emit_on_sync(emit_on_sync);
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out << 'a';
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out.flush(); // This is an indirect call to sync.
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if (emit_on_sync) {
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assert(base.str().size() == 1);
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assert(base.str()[0] == CharT('a'));
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} else
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assert(base.str().empty());
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}
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int main(int, char**) {
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test_sync<char>(true);
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test_sync<char>(false);
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test_sync<wchar_t>(true);
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test_sync<wchar_t>(false);
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#endif
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return 0;
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}
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