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Codechange: Add InPlaceReplacement to couple StringConsumer and Builder on the same buffer.

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frosch
2025-04-03 20:50:51 +02:00
committed by frosch
parent f5ffd4789b
commit dc21fae18e
7 changed files with 230 additions and 0 deletions
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src/tests/string_inplace.cpp Normal file
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/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file string_inplace.cpp Test functionality from core/string_inplace. */
#include "../stdafx.h"
#include "../3rdparty/catch2/catch.hpp"
#include "../core/string_inplace.hpp"
#include "../safeguards.h"
using namespace std::literals;
TEST_CASE("InPlaceReplacement")
{
std::array<char, 4> buffer{1, 2, 3, 4};
InPlaceReplacement inplace(buffer);
CHECK(!inplace.builder.AnyBytesWritten());
CHECK(inplace.builder.GetBytesWritten() == 0);
CHECK(inplace.builder.GetWrittenData() == ""sv);
CHECK(!inplace.builder.AnyBytesUnused());
CHECK(inplace.builder.GetBytesUnused() == 0);
CHECK(!inplace.consumer.AnyBytesRead());
CHECK(inplace.consumer.GetBytesRead() == 0);
CHECK(inplace.consumer.AnyBytesLeft());
CHECK(inplace.consumer.GetBytesLeft() == 4);
CHECK(inplace.consumer.ReadUint16LE() == 0x201);
CHECK(inplace.builder.GetBytesWritten() == 0);
CHECK(inplace.builder.GetBytesUnused() == 2);
CHECK(inplace.consumer.GetBytesRead() == 2);
CHECK(inplace.consumer.GetBytesLeft() == 2);
inplace.builder.PutUint8(11);
CHECK(inplace.builder.GetBytesWritten() == 1);
CHECK(inplace.builder.GetBytesUnused() == 1);
CHECK(inplace.consumer.GetBytesRead() == 2);
CHECK(inplace.consumer.GetBytesLeft() == 2);
inplace.builder.PutUint8(12);
CHECK(inplace.builder.GetBytesWritten() == 2);
CHECK(inplace.builder.GetBytesUnused() == 0);
CHECK(inplace.consumer.GetBytesRead() == 2);
CHECK(inplace.consumer.GetBytesLeft() == 2);
CHECK(buffer[0] == 11);
CHECK(buffer[1] == 12);
CHECK(buffer[2] == 3);
CHECK(buffer[3] == 4);
}