#include <QtTest/QtTest>

class TestMainWindow : public QObject
{
    Q_OBJECT

private slots:
    void testValidateInputValid();
    void testValidateInputInvalid();
    void testValidateInputEmpty();
    void testValidateInputMixedCase();
};

void TestMainWindow::testValidateInputValid()
{
    // Test valid input patterns
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");
    
    QVERIFY(pattern.match("Test123").hasMatch());
    QVERIFY(pattern.match("abc456").hasMatch());
    QVERIFY(pattern.match("ABC789").hasMatch());
}

void TestMainWindow::testValidateInputInvalid()
{
    // Test invalid input patterns
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");
    
    QVERIFY(!pattern.match("123Test").hasMatch());
    QVERIFY(!pattern.match("Test").hasMatch());
    QVERIFY(!pattern.match("123").hasMatch());
    QVERIFY(!pattern.match("Test123ABC").hasMatch());
    QVERIFY(!pattern.match("Test-123").hasMatch());
}

void TestMainWindow::testValidateInputEmpty()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");
    QVERIFY(!pattern.match("").hasMatch());
}

void TestMainWindow::testValidateInputMixedCase()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");
    
    QVERIFY(pattern.match("TeSt123").hasMatch());
    QVERIFY(pattern.match("aBcDeF999").hasMatch());
}

QTEST_MAIN(TestMainWindow)

#include "test_main.moc"