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#include <QtTest/QtTest>

#include <QtXmlPatterns/QXmlFormatter>
#include <QtXmlPatterns/QXmlQuery>

/*!
 \class tst_QXmlFormatter
 \internal
 \since 4.4
 \brief Tests class QXmlFormatter.

 This test is not intended for testing the engine, but the functionality specific
 to the QXmlFormatter class.

 In other words, if you have an engine bug; don't add it here because it won't be
 tested properly. Instead add it to the test suite.

 */
class tst_QXmlFormatter : public QObject
{
    Q_OBJECT

public:
    tst_QXmlFormatter();

private Q_SLOTS:
    void indentationDepth() const;
    void setIndentationDepth() const;
    void constCorrectness() const;
    void objectSize() const;
    void format();
    void format_data() const;
    void cleanupTestCase() const;
private:
    enum
    {
        ExpectedTestCount = 19
    };

    int m_generatedBaselines;
};

tst_QXmlFormatter::tst_QXmlFormatter() : m_generatedBaselines(0)
{
}

void tst_QXmlFormatter::indentationDepth() const
{
    /* Check default value. */
    {
        QXmlQuery query;
        QByteArray out;
        QBuffer buffer(&out);
        QVERIFY(buffer.open(QIODevice::WriteOnly));

        QXmlFormatter formatter(query, &buffer);
        QCOMPARE(formatter.indentationDepth(), 4);
    }
}

void tst_QXmlFormatter::setIndentationDepth() const
{
    QXmlQuery query;
    QByteArray out;
    QBuffer buffer(&out);
    QVERIFY(buffer.open(QIODevice::WriteOnly));

    QXmlFormatter formatter(query, &buffer);

    formatter.setIndentationDepth(1);
    QCOMPARE(formatter.indentationDepth(), 1);

    formatter.setIndentationDepth(654987);
    QCOMPARE(formatter.indentationDepth(), 654987);
}

void tst_QXmlFormatter::constCorrectness() const
{
    QXmlQuery query;
    QByteArray out;
    QBuffer buffer(&out);
    QVERIFY(buffer.open(QIODevice::WriteOnly));

    const QXmlFormatter formatter(query, &buffer);

    /* These functions should be const. */
    formatter.indentationDepth();
}

void tst_QXmlFormatter::objectSize() const
{
    /* We shouldn't add something. */
    QCOMPARE(sizeof(QXmlFormatter), sizeof(QXmlSerializer));
}

void tst_QXmlFormatter::format()
{
    QFETCH(QString, testName);

    const QString location(QFINDTESTDATA("input/") + testName);
    QFile queryFile(location);
    QVERIFY(queryFile.open(QIODevice::ReadOnly));

    QXmlQuery query;
    query.setQuery(&queryFile, QUrl::fromLocalFile(location));

    QByteArray formatted;
    QBuffer bridge(&formatted);
    QVERIFY(bridge.open(QIODevice::WriteOnly));

    QXmlFormatter formatter(query, &bridge);

    QVERIFY(query.evaluateTo(&formatter));

    QFile expectedFile(QFINDTESTDATA("baselines/") + testName.left(testName.length() - 2) + QString::fromLatin1("xml"));

    if(expectedFile.exists())
    {
        QVERIFY(expectedFile.open(QIODevice::ReadOnly));
        const QByteArray expectedOutput(expectedFile.readAll());
        QCOMPARE(formatted, expectedOutput);
    }
    else
    {
        ++m_generatedBaselines;
        expectedFile.close();
        QVERIFY(expectedFile.open(QIODevice::WriteOnly));
        QCOMPARE(expectedFile.write(formatted), qint64(formatted.size()));
    }
}

void tst_QXmlFormatter::format_data() const
{
    // TODO test with pis and document nodes commencing indentaiton.
    // TODO atomic values doesn't trigger characters, it seems.
    QTest::addColumn<QString>("testName");

    QDir dir;
    dir.cd(QFINDTESTDATA("input"));

    const QStringList entries(dir.entryList(QStringList(QLatin1String("*.xq"))));
    for(int i = 0; i < entries.count(); ++i)
    {
        const QString &at = entries.at(i);
        QTest::newRow(at.toUtf8().constData()) << at;
    }

    QCOMPARE(int(ExpectedTestCount), entries.count());
}

void tst_QXmlFormatter::cleanupTestCase() const
{
    QCOMPARE(m_generatedBaselines, 0);
}

QTEST_MAIN(tst_QXmlFormatter)

#include "tst_qxmlformatter.moc"

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