string_builder.cpp

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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/>.
 */
 
#include "../stdafx.h"
#include "../3rdparty/catch2/catch.hpp"
#include "../core/string_builder.hpp"
#include "../safeguards.h"
 
TEST_CASE("StringBuilder - basic")
{
  std::string buffer;
  StringBuilder builder(buffer);
 
  CHECK(!builder.AnyBytesWritten());
  CHECK(builder.GetBytesWritten() == 0);
  CHECK(builder.GetWrittenData() == ""sv);
 
  builder.Put("ab");
  builder += "cdef";
 
  CHECK(builder.AnyBytesWritten());
  CHECK(builder.GetBytesWritten() == 6);
  CHECK(builder.GetWrittenData() == "abcdef"sv);
 
  CHECK(buffer == "abcdef"sv);
}
 
TEST_CASE("StringBuilder - binary")
{
  std::string buffer;
  StringBuilder builder(buffer);
 
  builder.PutUint8(1);
  builder.PutSint8(-1);
  builder.PutUint16LE(0x201);
  builder.PutSint16LE(-0x201);
  builder.PutUint32LE(0x30201);
  builder.PutSint32LE(-0x30201);
  builder.PutUint64LE(0x7060504030201);
  builder.PutSint64LE(-0x7060504030201);
 
  CHECK(buffer == "\x01\xFF\x01\x02\xFF\xFD\x01\x02\x03\x00\xFF\xFD\xFC\xFF\x01\x02\x03\04\x05\x06\x07\x00\xFF\xFD\xFC\xFB\xFA\xF9\xF8\xFF"sv);
}
 
TEST_CASE("StringBuilder - text")
{
  std::string buffer;
  StringBuilder builder(buffer);
 
  builder.PutChar('a');
  builder.PutUtf8(0x1234);
  builder.PutChar(' ');
  builder.PutIntegerBase<uint32_t>(1234, 10);
  builder.PutChar(' ');
  builder.PutIntegerBase<uint32_t>(0x7FFF, 16);
  builder.PutChar(' ');
  builder.PutIntegerBase<int32_t>(-1234, 10);
  builder.PutChar(' ');
  builder.PutIntegerBase<int32_t>(-0x7FFF, 16);
  builder.PutChar(' ');
  builder.PutIntegerBase<uint64_t>(1'234'567'890'123, 10);
  builder.PutChar(' ');
  builder.PutIntegerBase<uint64_t>(0x1234567890, 16);
  builder.PutChar(' ');
  builder.PutIntegerBase<int64_t>(-1'234'567'890'123, 10);
  builder.PutChar(' ');
  builder.PutIntegerBase<int64_t>(-0x1234567890, 16);
 
  CHECK(buffer == "a\u1234 1234 7fff -1234 -7fff 1234567890123 1234567890 -1234567890123 -1234567890"sv);
}