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

    when( access.isEditable() ).thenReturn( true );
    final GridCell<Boolean> cell = new BaseGridCell<>( new BaseGridCellValue<>( false ) );
    column.edit( cell,
                 context,
                 callback );
    verify( callback,
            times( 1 ) ).accept( callbackArgumentCaptor.capture() );
    final BaseGridCellValue<Boolean> callbackArgument = callbackArgumentCaptor.getValue();
    assertTrue( callbackArgument.getValue() );
}