test/testglobal.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2023  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 <type_traits>
  30
  31 #include <QList>
  32 #include <QObject>
  33 #include <QTest>
  34
  35 #include "base/global.h"
  36
  37 class TestGlobal final : public QObject
  38 {
  39     Q_OBJECT
  40     Q_DISABLE_COPY_MOVE(TestGlobal)
  41
  42 public:
  43     TestGlobal() = default;
  44
  45 private slots:
  46     void testAsConst() const
  47     {
  48         {
  49             QList<int> list = {0, 1, 2};
  50
  51             static_assert(std::is_const_v<std::remove_reference_t<decltype(asConst(list))>>);
  52             QCOMPARE(list, asConst(list));
  53             QCOMPARE(list, asConst(QList<int>(list)));
  54         }
  55
  56         {
  57             const QList<int> list = {0, 1, 2};
  58
  59             static_assert(std::is_const_v<std::remove_reference_t<decltype(asConst(list))>>);
  60             QCOMPARE(list, asConst(list));
  61             QCOMPARE(list, asConst(QList<int>(list)));
  62
  63             // should not compile:
  64             //asConst(std::move(list));
  65         }
  66     }
  67 };
  68
  69 QTEST_APPLESS_MAIN(TestGlobal)
  70 #include "testglobal.moc"