@Test
@SuppressWarnings("unchecked")
public void editReadOnly() {

    when( access.isEditable() ).thenReturn( false );
    final GridCell<Boolean> cell = new BaseGridCell<>( new BaseGridCellValue<>( true ) );
    column.edit( cell,
                 context,
                 callback );
    verify( callback,
            never() ).accept( any( BaseGridCellValue.class ) );
}