The following code:

QTest::mouseClick(tw, Qt::LeftButton, Qt::NoModifier, QPoint(point.x() + 1, point.y() + 1), 1000);

is performed in a cell of a table widget.

There is a connection:

connect( cardDetailsTableWidget, SIGNAL( cellClicked ( int , int ) ), this, SLOT( cardDetailsTableWidget_cellClicked ( int , int ) ) );

the signal is caught in normal running, but QTest::mouseClick does not emit a signal (or at least the cardDetailsTableWidget_cellClicked is never called.