natTable.getDataValueByPosition(askPriceColumnIndex, 4);
Thread.sleep(500);
assertTrue(listener.containsInstanceOf(CellVisualChangeEvent.class));
CellVisualChangeEvent event = (CellVisualChangeEvent) listener
.getReceivedEvents().get(0);
assertEquals(askPriceColumnIndex, event.getColumnPosition());
assertEquals(4, event.getRowPosition());
Collection<Rectangle> changedPositionRectangles = event
.getChangedPositionRectangles();
assertEquals(1, changedPositionRectangles.size());
// only the cell gets updated
Rectangle rectangle = changedPositionRectangles.iterator().next();