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** This file is part of the test suite of the Qt Toolkit.
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#include <QtTest/qtest.h>
#include <QtQml/qqmlengine.h>
#include <QtQml/qqmlcomponent.h>
#include <QtQuickControls2/qquickstyle.h>
#include <QtQuickControls2/private/qquickstyle_p.h>
#include <QtGui/private/qguiapplication_p.h>

#include "../shared/util.h"

class tst_QQuickStyle : public QQmlDataTest
{
    Q_OBJECT

private slots:
    void cleanup();
    void lookup();
    void configurationFile_data();
    void configurationFile();
    void commandLineArgument();
    void environmentVariables();
    void availableStyles();
    void qrcInQtQuickControlsStylePathEnvVar_data();
    void qrcInQtQuickControlsStylePathEnvVar();

private:
    void loadControls();
    void unloadControls();
};

void tst_QQuickStyle::cleanup()
{
    unloadControls();

    QGuiApplicationPrivate::styleOverride.clear();
    qunsetenv("QT_QUICK_CONTROLS_STYLE");
    qunsetenv("QT_QUICK_CONTROLS_STYLE_PATH");
    qunsetenv("QT_QUICK_CONTROLS_FALLBACK_STYLE");
    qunsetenv("QT_QUICK_CONTROLS_CONF");
}

void tst_QQuickStyle::loadControls()
{
    QQmlEngine engine;
    QQmlComponent component(&engine);
    component.setData("import QtQuick 2.0; import QtQuick.Controls 2.1; Control { }", QUrl());

    QScopedPointer<QObject> object(component.create());
    QVERIFY2(!object.isNull(), qPrintable(component.errorString()));
}

void tst_QQuickStyle::unloadControls()
{
    qmlClearTypeRegistrations();
}

void tst_QQuickStyle::lookup()
{
    QVERIFY(QQuickStyle::name().isEmpty());
    QVERIFY(!QQuickStyle::path().isEmpty());

    QQuickStyle::setStyle("material");
    QCOMPARE(QQuickStyle::name(), QString("Material"));
    QVERIFY(!QQuickStyle::path().isEmpty());

    loadControls();

    QCOMPARE(QQuickStyle::name(), QString("Material"));
    QVERIFY(!QQuickStyle::path().isEmpty());
}

void tst_QQuickStyle::configurationFile_data()
{
    QTest::addColumn<QString>("fileName");
    QTest::addColumn<QString>("expectedStyle");
    QTest::addColumn<QString>("expectedPath");

    QTest::newRow("Default") << "default.conf" << "Default" << "";
    QTest::newRow("Fusion") << "fusion.conf" << "Fusion" << "";
    QTest::newRow("Imagine") << "imagine.conf" << "Imagine" << "";
    QTest::newRow("Material") << "material.conf" << "Material" << "";
    QTest::newRow("Universal") << "universal.conf" << "Universal" << "";
    QTest::newRow("Custom") << "custom.conf" << "Custom" << ":/";
}

void tst_QQuickStyle::configurationFile()
{
    QFETCH(QString, fileName);
    QFETCH(QString, expectedStyle);
    QFETCH(QString, expectedPath);

    qputenv("QT_QUICK_CONTROLS_CONF", testFile(fileName).toLocal8Bit());

    loadControls();

    QCOMPARE(QQuickStyle::name(), expectedStyle);
    if (!expectedPath.isEmpty())
        QCOMPARE(QQuickStyle::path(), expectedPath);
}

void tst_QQuickStyle::commandLineArgument()
{
    QGuiApplicationPrivate::styleOverride = "CmdLineArgStyle";

    loadControls();

    QCOMPARE(QQuickStyle::name(), QString("CmdLineArgStyle"));
}

void tst_QQuickStyle::environmentVariables()
{
    qputenv("QT_QUICK_CONTROLS_STYLE", "EnvVarStyle");
    qputenv("QT_QUICK_CONTROLS_FALLBACK_STYLE", "EnvVarFallbackStyle");
    QCOMPARE(QQuickStyle::name(), QString("EnvVarStyle"));
    QCOMPARE(QQuickStylePrivate::fallbackStyle(), QString("EnvVarFallbackStyle"));
}

void tst_QQuickStyle::availableStyles()
{
    QString path = QFINDTESTDATA("data");
    QVERIFY(!path.isEmpty());
    qputenv("QT_QUICK_CONTROLS_STYLE_PATH", path.toLocal8Bit());

    QStringList paths = QQuickStylePrivate::stylePaths();
    QVERIFY(paths.contains(path));

    const QStringList styles = QQuickStyle::availableStyles();
    QVERIFY(!styles.isEmpty());
    QCOMPARE(styles.first(), QString("Default"));
    QVERIFY(!styles.contains("designer"));

    // QTBUG-60973
    for (const QString &style : styles) {
        QVERIFY2(!style.endsWith(".dSYM"), qPrintable(style));
    }
}

void tst_QQuickStyle::qrcInQtQuickControlsStylePathEnvVar_data()
{
    QTest::addColumn<QString>("environmentVariable");
    QTest::addColumn<QStringList>("expectedAvailableStyles");

    const QChar listSeparator = QDir::listSeparator();
    const QStringList defaultAvailableStyles = QQuickStyle::availableStyles();

    {
        QString environmentVariable;
        QDebug stream(&environmentVariable);
        stream.noquote().nospace() << "/some/bogus/path/" << listSeparator
            << ":/qrcStyles1";

        QStringList expectedAvailableStyles = defaultAvailableStyles;
        // We need to move the Default style to the start of the list,
        // as that's what availableStyles() does.
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle1"));

        QTest::addRow("%s", qPrintable(environmentVariable))
            << environmentVariable << expectedAvailableStyles;
    }

    {
        QString environmentVariable;
        QDebug stream(&environmentVariable);
        stream.noquote().nospace() << ":/qrcStyles2" << listSeparator
            << "/some/bogus/path";

        QStringList expectedAvailableStyles = defaultAvailableStyles;
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle2"));

        QTest::addRow("%s", qPrintable(environmentVariable))
            << environmentVariable << expectedAvailableStyles;
    }

    {
        QString environmentVariable;
        QDebug stream(&environmentVariable);
        stream.noquote().nospace() << ":/qrcStyles1" << listSeparator
            << ":/qrcStyles2" << listSeparator
            << QFINDTESTDATA("data");

        QStringList expectedAvailableStyles = defaultAvailableStyles;
        expectedAvailableStyles.insert(1, QLatin1String("DummyStyle"));
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle2"));
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle1"));

        QTest::addRow("%s", qPrintable(environmentVariable))
            << environmentVariable << expectedAvailableStyles;
    }

    {
        QString environmentVariable;
        QDebug stream(&environmentVariable);
        stream.noquote().nospace() << QFINDTESTDATA("data") << listSeparator
            << ":/qrcStyles1" << listSeparator
            << ":/qrcStyles2";

        QStringList expectedAvailableStyles = defaultAvailableStyles;
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle2"));
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle1"));
        expectedAvailableStyles.insert(1, QLatin1String("DummyStyle"));

        QTest::addRow("%s", qPrintable(environmentVariable))
            << environmentVariable << expectedAvailableStyles;
    }

    {
        QString environmentVariable;
        QDebug stream(&environmentVariable);
        // Same as the last row, except it adds a superfluous separator
        // to ensure that it handles it gracefully rather than failing an assertion.
        stream.noquote().nospace() << QFINDTESTDATA("data") << listSeparator
            << ":/qrcStyles1" << listSeparator
            << ":/qrcStyles2" << listSeparator;

        QStringList expectedAvailableStyles = defaultAvailableStyles;
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle2"));
        expectedAvailableStyles.insert(1, QLatin1String("QrcStyle1"));
        expectedAvailableStyles.insert(1, QLatin1String("DummyStyle"));

        QTest::addRow("%s", qPrintable(environmentVariable))
            << environmentVariable << expectedAvailableStyles;
    }
}

/*
    Tests that qrc paths work with QT_QUICK_CONTROLS_STYLE_PATH.
*/
void tst_QQuickStyle::qrcInQtQuickControlsStylePathEnvVar()
{
    QFETCH(QString, environmentVariable);
    QFETCH(QStringList, expectedAvailableStyles);

    qputenv("QT_QUICK_CONTROLS_STYLE_PATH", environmentVariable.toLocal8Bit());

    const QStringList availableStyles = QQuickStyle::availableStyles();
    if (availableStyles != expectedAvailableStyles) {
        QString failureMessage;
        QDebug stream(&failureMessage);
        stream << "Mismatch in actual vs expected available styles:"
               << "\n   Expected:" << expectedAvailableStyles
               << "\n   Actual:" << availableStyles;
        QFAIL(qPrintable(failureMessage));
    }
}

QTEST_MAIN(tst_QQuickStyle)

#include "tst_qquickstyle.moc"