testglobal.cpp

/*
 * Bittorrent Client using Qt and libtorrent.
 * Copyright (C) 2023  Mike Tzou (Chocobo1)
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 */

#include <type_traits>

#include <QList>
#include <QObject>
#include <QTest>

#include "base/global.h"

class TestGlobal final : public QObject
{
    Q_OBJECT
    Q_DISABLE_COPY_MOVE(TestGlobal)

public:
    TestGlobal() = default;

private slots:
    void testAsConst() const
    {
        {
            QList<int> list = {0, 1, 2};

            static_assert(std::is_const_v<std::remove_reference_t<decltype(asConst(list))>>);
            QCOMPARE(list, asConst(list));
            QCOMPARE(list, asConst(QList<int>(list)));
        }

        {
            const QList<int> list = {0, 1, 2};

            static_assert(std::is_const_v<std::remove_reference_t<decltype(asConst(list))>>);
            QCOMPARE(list, asConst(list));
            QCOMPARE(list, asConst(QList<int>(list)));

            // should not compile:
            //asConst(std::move(list));
        }
    }
};

QTEST_APPLESS_MAIN(TestGlobal)
#include "testglobal.moc"