test/testutilsnumber.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2024  Mike Tzou (Chocobo1)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include <limits>
  30
  31 #include <QTest>
  32
  33 #include "base/utils/number.h"
  34
  35 class TestUtilsNumber final : public QObject
  36 {
  37     Q_OBJECT
  38     Q_DISABLE_COPY_MOVE(TestUtilsNumber)
  39
  40 public:
  41     TestUtilsNumber() = default;
  42
  43 private slots:
  44     void testClampingAdd() const
  45     {
  46         const int intMin = std::numeric_limits<int>::min();
  47         const int intMax = std::numeric_limits<int>::max();
  48
  49         QCOMPARE(Utils::Number::clampingAdd(1, 2), 3);
  50         QCOMPARE(Utils::Number::clampingAdd(-1, -2), -3);
  51
  52         QCOMPARE(Utils::Number::clampingAdd((intMax - 1), 1), intMax);
  53         QCOMPARE(Utils::Number::clampingAdd(intMax, 1), intMax);
  54         QCOMPARE(Utils::Number::clampingAdd(intMax, intMax), intMax);
  55
  56         QCOMPARE(Utils::Number::clampingAdd((intMin + 1), -1), intMin);
  57         QCOMPARE(Utils::Number::clampingAdd(intMin, -1), intMin);
  58         QCOMPARE(Utils::Number::clampingAdd(intMin, intMin), intMin);
  59     }
  60 };
  61
  62 QTEST_APPLESS_MAIN(TestUtilsNumber)
  63 #include "testutilsnumber.moc"