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/* Copyright (C) 2025 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "lib/self_test.h"
#include "ps/strings/StringBuilder.h"
#include <array>
#include <limits>
class TestStringBuilder : public CxxTest::TestSuite
{
public:
template<typename T>
void Check(const T value, const std::string_view str)
{
char buffer[64] = {};
PS::StringBuilder builder{{std::begin(buffer), std::end(buffer)}};
builder.Append(value);
TS_ASSERT_EQUALS(builder.Str(), str);
}
void test_append()
{
Check<int>(0, "0");
Check<int>(std::numeric_limits<int>::min(), "-2147483648");
Check<int>(std::numeric_limits<int>::max(), "2147483647");
Check<uint64_t>(std::numeric_limits<uint64_t>::min(), "0");
Check<uint64_t>(std::numeric_limits<uint64_t>::max(), "18446744073709551615");
Check<float>(0.0f, "0");
Check<float>(1.0f, "1");
Check<float>(-1.0f, "-1");
Check<float>(0.5f, "0.5");
Check<float>(1e-3f, "0.001");
}
void test_overflow()
{
char buffer[8] = {};
buffer[3] = 1;
buffer[4] = 2;
PS::StringBuilder builder{{std::begin(buffer), std::begin(buffer) + 4}};
builder.Append("abc");
TS_ASSERT_EQUALS(buffer[0], 'a');
TS_ASSERT_EQUALS(buffer[3], 0);
TS_ASSERT_EQUALS(buffer[4], 2);
TS_ASSERT_EQUALS(builder.Str(), "abc");
}
};
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