#include <QtTest/QtTest>
#include <QTreeView>
#include <QStandardItemModel>
#include <QLineEdit>
#include <QApplication>
class Test : public QObject{
      Q_OBJECT

private slots:

      void testSetIndexWidget(){
              QLineEdit *lineEdit = new QLineEdit();
              QTreeView itemView;
              QStandardItemModel model;
              itemView.show();
              model.appendRow(new QStandardItem("an item"));
              itemView.setModel(&model);

              itemView.setIndexWidget(model.index(0,0),lineEdit);
              QApplication::processEvents();

              QVERIFY(itemView.indexWidget(model.index(0,0)));
              QCOMPARE(itemView.indexWidget(model.index(0,0)),lineEdit );

              itemView.setIndexWidget(model.index(0,0),lineEdit);
              QApplication::processEvents();

              QVERIFY(itemView.indexWidget(model.index(0,0)));
              QCOMPARE(itemView.indexWidget(model.index(0,0)),lineEdit );
      }
};

QTEST_MAIN(Test)
#include "test.moc"

CONFIG+=teambuilder
TEMPLATE = app
TARGET = testcase
DEPENDPATH += .
INCLUDEPATH += .

# Input
SOURCES += test.cpp
CONFIG += qt warn_on debug  create_prl link_prl
QT += testlib

#include <QtGui/QApplication>
#include <QtGui/QDialog>
#include <QtGui/QTableWidget>
#include <QtGui/QLineEdit>
#include <QtGui/QVBoxLayout>
#include <QtCore/QTimer>

class MyClass : public QDialog {
    Q_OBJECT

private:
    QLineEdit *le;
    QTableWidget *tw;

public:
    MyClass(QWidget *parent = 0) : QDialog(parent) {
        tw = new QTableWidget(5, 5);
        le = new QLineEdit;
        le->setText("lineEdit");

        QVBoxLayout *layout = new QVBoxLayout;
        layout->addWidget(tw);
        setLayout(layout);

        QTimer *timer = new QTimer(this);
        connect(timer, SIGNAL(timeout()), SLOT(test()));
        timer->start(1000);
    }

public slots:
    void test() {
         tw->setCellWidget(0,0,le);
    }
};

#include "debug/main.moc"

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    MyClass myClass;
    myClass.show();
    return app.exec();
}