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#include <QtTest/QtTest>

#ifdef QTEST_XMLPATTERNS

#include <QtXmlPatterns/QXmlItem>

#include <QtXmlPatterns/QXmlQuery>

#include <QtXmlPatterns/QXmlResultItems>

#include "../qxmlquery/MessageSilencer.h"

/*!

 \class tst_QXmlResultItems

 \internal

 \since 4.4

 \brief Tests class QXmlResultItems.

 */

class tst_QXmlResultItems : public QObject

{

    Q_OBJECT

private Q_SLOTS:

    void defaultConstructor() const;

    void next() const;

    void current() const;

    void hasError() const;

    void objectSize() const;

    void constCorrectness() const;

    void evalateWithInstantError() const;

    void evalateWithQueryError() const;

    void evaluate() const;

    void evaluate_data() const;

};

void tst_QXmlResultItems::defaultConstructor() const

{

    {

        QXmlResultItems result;

    }

    {

        QXmlResultItems result1;

        QXmlResultItems result2;

    }

    {

        QXmlResultItems result1;

        QXmlResultItems result2;

        QXmlResultItems result3;

    }

}

void tst_QXmlResultItems::next() const

{

    /* Check default value. */

    {

        QXmlResultItems result;

        QVERIFY(result.next().isNull());

    }

    /* Stress it on a default constructed value. */

    {

        QXmlResultItems result;

        QVERIFY(result.next().isNull());

        QVERIFY(result.next().isNull());

        QVERIFY(result.next().isNull());

    }

}

void tst_QXmlResultItems::current() const

{

    /* Check default value. */

    {

        QXmlResultItems result;

        QVERIFY(result.current().isNull());

    }

    /* Stress it on a default constructed value. */

    {

        QXmlResultItems result;

        QVERIFY(result.current().isNull());

        QVERIFY(result.current().isNull());

        QVERIFY(result.current().isNull());

    }

}

void tst_QXmlResultItems::hasError() const

{

    /* Check default value. */

    {

        QXmlResultItems result;

        QVERIFY(!result.hasError());

    }

    /* Stress it on a default constructed value. */

    {

        QXmlResultItems result;

        QVERIFY(!result.hasError());

        QVERIFY(!result.hasError());

        QVERIFY(!result.hasError());

    }

}

void tst_QXmlResultItems::objectSize() const

{

    /* A d-pointer plus a vtable pointer. */

    QCOMPARE(sizeof(QXmlResultItems), sizeof(void *) * 2);

}

void tst_QXmlResultItems::constCorrectness() const

{

    const QXmlResultItems result;

    /* These functions should be const. */

    result.current();

    result.hasError();

}

/*!

 What's special about this is that it's not the QAbstractXmlForwardIterator::next()

 that triggers the error, it's QPatternist::Expression::evaluateSingleton() directly.

 */

void tst_QXmlResultItems::evalateWithInstantError() const

{

    QXmlQuery query;

    MessageSilencer silencer;

    query.setMessageHandler(&silencer);

    query.setQuery(QLatin1String("fn:error()"));

    QXmlResultItems result;

    query.evaluateTo(&result);

    /* Check the values, and stress it. */

    for(int i = 0; i < 3; ++i)

    {

        QVERIFY(result.current().isNull());

        QVERIFY(result.next().isNull());

        QVERIFY(result.hasError());

    }

}

void tst_QXmlResultItems::evaluate() const

{

    QFETCH(QString, queryString);

    QXmlQuery query;

    query.setQuery(queryString);

    QVERIFY(query.isValid());

    QXmlResultItems result;

    query.evaluateTo(&result);

    QXmlItem item(result.next());

    while(!item.isNull())

    {

        QVERIFY(!result.current().isNull());

        QVERIFY(!result.hasError());

        item = result.next();

    }

    /* Now, stress beyond the end. */

    for(int i = 0; i < 3; ++i)

    {

        QVERIFY(result.current().isNull());

        QVERIFY(result.next().isNull());

    }

}

void tst_QXmlResultItems::evaluate_data() const

{

    QTest::addColumn<QString>("queryString");

    QTest::newRow("one atomic value") << QString::fromLatin1("1");

    QTest::newRow("two atomic values") << QString::fromLatin1("1, xs:hexBinary('FF')");

    QTest::newRow("one node") << QString::fromLatin1("attribute name {'body'}");

    QTest::newRow("one node") << QString::fromLatin1("attribute name {'body'}");

    QTest::newRow("two nodes") << QString::fromLatin1("attribute name {'body'}, <!-- comment -->");

}

void tst_QXmlResultItems::evalateWithQueryError() const

{

    /* This query is invalid. */

    const QXmlQuery query;

    QXmlResultItems result;

    query.evaluateTo(&result);

    QVERIFY(result.hasError());

    QVERIFY(result.next().isNull());

}

QTEST_MAIN(tst_QXmlResultItems)

#include "tst_qxmlresultitems.moc"

#else

QTEST_NOOP_MAIN

#endif

// vim: et:ts=4:sw=4:sts=4