/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
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** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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** $QT_END_LICENSE$
**
****************************************************************************/


#include <QtTest/QtTest>

class tst_QGlobal: public QObject
{
    Q_OBJECT
private slots:
    void qIsNull();
    void for_each();
    void qassert();
    void qtry();
    void checkptr();
    void qstaticassert();
    void qConstructorFunction();
};

void tst_QGlobal::qIsNull()
{
    double d = 0.0;
    float f = 0.0f;

    QVERIFY(::qIsNull(d));
    QVERIFY(::qIsNull(f));

    d += 0.000000001;
    f += 0.0000001f;

    QVERIFY(!::qIsNull(d));
    QVERIFY(!::qIsNull(f));
}

void tst_QGlobal::for_each()
{
    QList<int> list;
    list << 0 << 1 << 2 << 3 << 4 << 5;

    int counter = 0;
    foreach(int i, list) {
        QCOMPARE(i, counter++);
    }
    QCOMPARE(counter, list.count());

    // do it again, to make sure we don't have any for-scoping
    // problems with older compilers
    counter = 0;
    foreach(int i, list) {
        QCOMPARE(i, counter++);
    }
    QCOMPARE(counter, list.count());
}

void tst_QGlobal::qassert()
{
    bool passed = false;
    if (false) {
        Q_ASSERT(false);
    } else {
        passed = true;
    }
    QVERIFY(passed);

    passed = false;
    if (false) {
        Q_ASSERT_X(false, "tst_QGlobal", "qassert");
    } else {
        passed = true;
    }
    QVERIFY(passed);

    passed = false;
    if (false)
        Q_ASSERT(false);
    else
        passed = true;
    QVERIFY(passed);

    passed = false;
    if (false)
        Q_ASSERT_X(false, "tst_QGlobal", "qassert");
    else
        passed = true;
    QVERIFY(passed);
}

void tst_QGlobal::qtry()
{
    int i = 0;
    QT_TRY {
        i = 1;
        QT_THROW(42);
        i = 2;
    } QT_CATCH(int) {
        QCOMPARE(i, 1);
        i = 7;
    }
#ifdef QT_NO_EXCEPTIONS
    QCOMPARE(i, 2);
#else
    QCOMPARE(i, 7);
#endif

    // check propper if/else scoping
    i = 0;
    if (true) {
        QT_TRY {
            i = 2;
            QT_THROW(42);
            i = 4;
        } QT_CATCH(int) {
            QCOMPARE(i, 2);
            i = 4;
        }
    } else {
        QCOMPARE(i, 0);
    }
    QCOMPARE(i, 4);

    i = 0;
    if (false) {
        QT_TRY {
            i = 2;
            QT_THROW(42);
            i = 4;
        } QT_CATCH(int) {
            QCOMPARE(i, 2);
            i = 2;
        }
    } else {
        i = 8;
    }
    QCOMPARE(i, 8);

    i = 0;
    if (false) {
        i = 42;
    } else {
        QT_TRY {
            i = 2;
            QT_THROW(42);
            i = 4;
        } QT_CATCH(int) {
            QCOMPARE(i, 2);
            i = 4;
        }
    }
    QCOMPARE(i, 4);
}

void tst_QGlobal::checkptr()
{
    int i;
    QCOMPARE(q_check_ptr(&i), &i);

    const char *c = "hello";
    QCOMPARE(q_check_ptr(c), c);
}

// Check Q_STATIC_ASSERT, It should compile
// note that, we are not able to test Q_STATIC_ASSERT(false), to do it manually someone has
// to replace expressions (in the asserts) one by one to false, and check if it breaks build.
class MyTrue
{
public:
    MyTrue()
    {
        Q_STATIC_ASSERT(true);
        Q_STATIC_ASSERT(!false);
        Q_STATIC_ASSERT_X(true,"");
        Q_STATIC_ASSERT_X(!false,"");
    }
    ~MyTrue()
    {
        Q_STATIC_ASSERT(true);
        Q_STATIC_ASSERT(!false);
        Q_STATIC_ASSERT_X(true,"");
        Q_STATIC_ASSERT_X(!false,"");
    }
    Q_STATIC_ASSERT(true);
    Q_STATIC_ASSERT(!false);
    Q_STATIC_ASSERT_X(true,"");
    Q_STATIC_ASSERT_X(!false,"");
};

struct MyExpresion
{
    void foo()
    {
        Q_STATIC_ASSERT(sizeof(MyTrue) > 0);
        Q_STATIC_ASSERT(sizeof(MyTrue) > 0);
        Q_STATIC_ASSERT_X(sizeof(MyTrue) > 0,"");
        Q_STATIC_ASSERT_X(sizeof(MyTrue) > 0,"");
    }
private:
    Q_STATIC_ASSERT(sizeof(MyTrue) > 0);
    Q_STATIC_ASSERT(sizeof(MyTrue) > 0);
    Q_STATIC_ASSERT_X(sizeof(MyTrue) > 0, "");
    Q_STATIC_ASSERT_X(sizeof(MyTrue) > 0, "");
};

struct TypeDef
{
    typedef int T;
    Q_STATIC_ASSERT(sizeof(T));
    Q_STATIC_ASSERT_X(sizeof(T), "");
};

template<typename T1, typename T2>
struct Template
{
    static const bool True = true;
    typedef typename T1::T DependentType;
    Q_STATIC_ASSERT(True);
    Q_STATIC_ASSERT(!!True);
    Q_STATIC_ASSERT(sizeof(DependentType));
    Q_STATIC_ASSERT(!!sizeof(DependentType));
    Q_STATIC_ASSERT_X(True, "");
    Q_STATIC_ASSERT_X(!!True, "");
    Q_STATIC_ASSERT_X(sizeof(DependentType), "");
    Q_STATIC_ASSERT_X(!!sizeof(DependentType), "");
};

struct MyTemplate
{
    static const bool Value = Template<TypeDef, int>::True;
    Q_STATIC_ASSERT(Value);
    Q_STATIC_ASSERT(!!Value);
    Q_STATIC_ASSERT_X(Value, "");
    Q_STATIC_ASSERT_X(!!Value, "");
};

void tst_QGlobal::qstaticassert()
{
    // Force compilation of these classes
    MyTrue tmp1;
    MyExpresion tmp2;
    MyTemplate tmp3;
    Q_UNUSED(tmp1);
    Q_UNUSED(tmp2);
    Q_UNUSED(tmp3);
    QVERIFY(true); // if the test compiles it has passed.
}

static int qConstructorFunctionValue;
static void qConstructorFunctionCtor()
{
    qConstructorFunctionValue = 123;
}
Q_CONSTRUCTOR_FUNCTION(qConstructorFunctionCtor);

void tst_QGlobal::qConstructorFunction()
{
    QCOMPARE(qConstructorFunctionValue, 123);
}

QTEST_MAIN(tst_QGlobal)
#include "tst_qglobal.moc"