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#include <QtTest/QtTest>
#include <qmargins.h>

Q_DECLARE_METATYPE(QMargins)

class tst_QMargins : public QObject
{
    Q_OBJECT
private slots:
    void getSetCheck();
    void dataStreamCheck();
    void operators();
};

// Testing get/set functions
void tst_QMargins::getSetCheck()
{
    QMargins margins;
    // int QMargins::width()
    // void QMargins::setWidth(int)
    margins.setLeft(0);
    QCOMPARE(0, margins.left());
    margins.setTop(INT_MIN);
    QCOMPARE(INT_MIN, margins.top());
    margins.setBottom(INT_MAX);
    QCOMPARE(INT_MAX, margins.bottom());
    margins.setRight(INT_MAX);
    QCOMPARE(INT_MAX, margins.right());

    margins = QMargins();
    QVERIFY(margins.isNull());
    margins.setLeft(5);
    margins.setRight(5);
    QVERIFY(!margins.isNull());
    QCOMPARE(margins, QMargins(5, 0, 5, 0));
}

void tst_QMargins::operators()
{
    const QMargins m1(12, 14, 16, 18);
    const QMargins m2(2, 3, 4, 5);

    const QMargins added = m1 + m2;
    QCOMPARE(added, QMargins(14, 17, 20, 23));
    QMargins a = m1;
    a += m2;
    QCOMPARE(a, added);

    const QMargins subtracted = m1 - m2;
    QCOMPARE(subtracted, QMargins(10, 11, 12, 13));
    a = m1;
    a -= m2;
    QCOMPARE(a, subtracted);

    const QMargins doubled = m1 * 2;
    QCOMPARE(doubled, QMargins(24, 28, 32, 36));
    QCOMPARE(2 * m1, doubled);
    QCOMPARE(qreal(2) * m1, doubled);
    QCOMPARE(m1 * qreal(2), doubled);

    a = m1;
    a *= 2;
    QCOMPARE(a, doubled);
    a = m1;
    a *= qreal(2);
    QCOMPARE(a, doubled);

    const QMargins halved = m1 / 2;
    QCOMPARE(halved, QMargins(6, 7, 8, 9));

    a = m1;
    a /= 2;
    QCOMPARE(a, halved);
    a = m1;
    a /= qreal(2);
    QCOMPARE(a, halved);

    QCOMPARE(m1 + (-m1), QMargins());
}

// Testing QDataStream operators
void tst_QMargins::dataStreamCheck()
{
    QByteArray buffer;

    // stream out
    {
        QMargins marginsOut(0,INT_MIN,INT_MAX,6852);
        QDataStream streamOut(&buffer, QIODevice::WriteOnly);
        streamOut << marginsOut;
    }

    // stream in & compare
    {
        QMargins marginsIn;
        QDataStream streamIn(&buffer, QIODevice::ReadOnly);
        streamIn >> marginsIn;

        QCOMPARE(marginsIn.left(), 0);
        QCOMPARE(marginsIn.top(), INT_MIN);
        QCOMPARE(marginsIn.right(), INT_MAX);
        QCOMPARE(marginsIn.bottom(), 6852);
    }
}

QTEST_APPLESS_MAIN(tst_QMargins)
#include "tst_qmargins.moc"