style: Apply clang-format to all C++ files

- Format MainWindow.cpp, MainWindow.h, main.cpp
- Format test files (test_main.cpp, test_mainwindow.cpp)
- Fixes Jenkins clang-format policy check

Entire-Checkpoint: ea47c089bf3a

qt6-after/qt6-migrated-benchmark/MainWindow.cpp

@@ -1,16 +1,15 @@
 #include "MainWindow.h"
+
 #include "ui_MainWindow.h"
 
 #include <QApplication>
-#include <QScreen>
 #include <QPixmap>
-#include <QString>
 #include <QRect>
+#include <QScreen>
+#include <QString>
 
-MainWindow::MainWindow(QWidget *parent)
-    : QMainWindow(parent)
-    , ui(new Ui::MainWindow)
-    , m_pattern(QRegularExpression(R"(^[A-Za-z]+\d+$)"))
+MainWindow::MainWindow(QWidget* parent)
+    : QMainWindow(parent), ui(new Ui::MainWindow), m_pattern(QRegularExpression(R"(^[A-Za-z]+\d+$)"))
 {
     ui->setupUi(this);
 
@@ -28,15 +27,16 @@ MainWindow::~MainWindow()
     delete ui;
 }
 
-bool MainWindow::validateInput(const QString &text) const
+bool MainWindow::validateInput(const QString& text) const
 {
     return m_pattern.match(text).hasMatch();
 }
 
 QString MainWindow::getScreenInfo() const
 {
-    const QScreen *screen = QApplication::primaryScreen();
-    if (!screen) {
+    const QScreen* screen = QApplication::primaryScreen();
+    if (!screen)
+    {
         return u"Screen: unavailable"_s;
     }
     const QRect geometry = screen->geometry();
@@ -47,9 +47,12 @@ void MainWindow::onValidateClicked()
 {
     const QString text = ui->lineEdit->text();
 
-    if (validateInput(text)) {
+    if (validateInput(text))
+    {
         ui->resultLabel->setText(u"Match"_s);
-    } else {
+    }
+    else
+    {
         ui->resultLabel->setText(u"No match"_s);
     }
 }