#include <QRegularExpression>
#include <QString>
#include <QTest>

class MainTest : public QObject
{
    Q_OBJECT

  private slots:
    void testRegularExpressionValidation_data();
    void testRegularExpressionValidation();
    void testQStringUtf8Conversion();
    void testRegularExpressionPattern();
};

void MainTest::testRegularExpressionValidation_data()
{
    QTest::addColumn<QString>("input");
    QTest::addColumn<bool>("expectedMatch");

    QTest::newRow("valid_input_Test123") << QString::fromUtf8("Test123") << true;
    QTest::newRow("valid_input_ABC456") << QString::fromUtf8("ABC456") << true;
    QTest::newRow("valid_input_a1") << QString::fromUtf8("a1") << true;
    QTest::newRow("invalid_input_123Test") << QString::fromUtf8("123Test") << false;
    QTest::newRow("invalid_input_special") << QString::fromUtf8("Test@123") << false;
    QTest::newRow("invalid_input_empty") << QString::fromUtf8("") << false;
}

void MainTest::testRegularExpressionValidation()
{
    QFETCH(QString, input);
    QFETCH(bool, expectedMatch);

    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");
    const bool matches = pattern.match(input).hasMatch();

    QCOMPARE(matches, expectedMatch);
}

void MainTest::testQStringUtf8Conversion()
{
    const QString title = QString::fromUtf8("Qt6 Migrated Benchmark");
    QCOMPARE(title, QString::fromUtf8("Qt6 Migrated Benchmark"));

    const QString label = QString::fromUtf8("Bitte Text wie Test123 eingeben.");
    QCOMPARE(label, QString::fromUtf8("Bitte Text wie Test123 eingeben."));
}

void MainTest::testRegularExpressionPattern()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");
    QVERIFY(pattern.isValid());

    const QRegularExpressionMatch match = pattern.match(QString::fromUtf8("Test123"));
    QVERIFY(match.hasMatch());

    const QRegularExpressionMatch noMatch = pattern.match(QString::fromUtf8("123Test"));
    QVERIFY(!noMatch.hasMatch());
}

QTEST_MAIN(MainTest)

#include "main_test.moc"