void () { myContainer.setLayout(new GridLayoutManager(2, 2)); // *|. *** . // // *** -> ***** insertComponent(0, 0, 1, 1); RadComponent c = insertComponent(1, 0, 1, 2); GridInsertLocation location = new GridInsertLocation(myContainer, 0, 0, GridInsertMode.ColumnAfter); DraggedComponentList dcl = DraggedComponentList.withComponents(myDropComponent); assertTrue(location.canDrop(dcl)); doDrop(location); assertEquals(3, myManager.getGridColumnCount(myContainer)); assertEquals(3, c.getConstraints().getColSpan()); }