migrate: Qt5/C++11 app to Qt6/C++23 with tests and modern Qt APIs

Entire-Checkpoint: c1ee98dc34a3

qt6-after/qt6-migrated-benchmark/tests/main_test.cpp

@@ -0,0 +1,63 @@
+#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"