/* Copyright (c) 2005 Frerich Raabe <raabe@kde.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "ksharedptrtest.h"
#include "ksharedptr.h"

#include <QTest>

QTEST_MAIN(KSharedPtrTest)

class SharedString : public KShared
{
public:
    SharedString(const QString &data) : mStr(data) {}
    bool operator == (const SharedString &o) const
    {
        return mStr == o.mStr;
    }
    QString mStr;
};

void KSharedPtrTest::testWithStrings()
{
    SharedString s = QString::fromLatin1("Hello");
    SharedString s2 = QString::fromLatin1("Foo");
    SharedString s3 = QString::fromLatin1("Bar");

    KSharedPtr<SharedString>u(new SharedString(s));
    QCOMPARE(*u, s);
    QVERIFY(u.isUnique());

    KSharedPtr<SharedString> v;
    QVERIFY(u.isUnique());
    QVERIFY(!v);

    v = u;
    QVERIFY(!u.isUnique());
    QCOMPARE(*v, s);
    QVERIFY(!v.isUnique());

    KSharedPtr<SharedString> w = v;
    QVERIFY(!u.isUnique());
    QCOMPARE(u.count(), 3);
    QVERIFY(!v.isUnique());
    QCOMPARE(v.count(), 3);
    QVERIFY(!w.isUnique());
    QCOMPARE(w.count(), 3);

//  v->clear();
    v = nullptr;
    QVERIFY(u);
    QVERIFY(!u.isUnique());
    QCOMPARE(u.count(), 2);
    QVERIFY(!v);
    QVERIFY(!v.isUnique());
    QCOMPARE(*w, s);
    QVERIFY(!w.isUnique());
    QCOMPARE(w.count(), 2);

    u = v = w;
    QCOMPARE(*u, s);
    QVERIFY(!u.isUnique());
    QCOMPARE(*v, s);
    QVERIFY(!v.isUnique());
    QCOMPARE(*w, s);
    QVERIFY(!w.isUnique());

    u->mStr = s2.mStr;
    QCOMPARE(*u, s2);
    QVERIFY(!u.isUnique());
    QCOMPARE(*v, s2);
    QVERIFY(!v.isUnique());
//  QCOMPARE( *w, s2 );
//  QVERIFY( !w.isUnique() );
}

static int dtor_called = 0;
class Base : public KShared
{
public:
    virtual ~Base()
    {
        ++dtor_called;
    }
};

void KSharedPtrTest::testDeletion()
{
    dtor_called = 0;
    {
        Base *obj = new Base;
        KSharedPtr<Base> ptrBase(obj);
        QCOMPARE(ptrBase.data(), obj);
        QCOMPARE(dtor_called, 0);   // no dtor called yet
    }
    QCOMPARE(dtor_called, 1);
}

class Derived : public Base
{
public:
    Derived()
    {
        /*qDebug( "Derived created %p", (void*)this );*/
    }
    ~Derived() override
    {
        /*qDebug( "Derived deleted %p", (void*)this );*/
    }
};

void KSharedPtrTest::testDifferentTypes()
{
    dtor_called = 0;
    {
        Derived *obj = new Derived;
        KSharedPtr<Base> ptrBase(obj);
        // then we call some method that takes a KSharedPtr<Base> as argument
        // and there we downcast again:
        KSharedPtr<Derived> ptrDerived = KSharedPtr<Derived>::staticCast(ptrBase);
        QCOMPARE(dtor_called, 0);   // no dtor called yet
        QCOMPARE(ptrDerived.data(), obj);

        // now test assignment operator
        ptrDerived = KSharedPtr<Derived>::dynamicCast(ptrBase);
        QCOMPARE(dtor_called, 0);   // no dtor called yet
        QCOMPARE(ptrDerived.data(), obj);
    }
    QCOMPARE(dtor_called, 1);
}

void KSharedPtrTest::testOrdering()
{
    Base *obj = new Base;
    KSharedPtr<Base> ptrBase(obj);

    Base *obj2 = new Base;
    KSharedPtr<Base> ptrBase2(obj2);

    QVERIFY(obj != obj2);
    QVERIFY(ptrBase != ptrBase2);
    QVERIFY(ptrBase < ptrBase2 || ptrBase2 < ptrBase);

    QMap<KSharedPtr<Base>, int> map;
    map.insert(ptrBase, 1);
    QVERIFY(map.contains(ptrBase));
    QVERIFY(!map.contains(ptrBase2));
    QCOMPARE(map.value(ptrBase, 0),  1);
    map.insert(ptrBase2, 2);
    QVERIFY(map.contains(ptrBase2));
    QCOMPARE(map.value(ptrBase2, 0),  2);
    QCOMPARE(map.count(), 2);
}

