### Question:
UndefinedExpressionCell extends DMNGridCell<String> { @Override public GridCellEditAction getSupportedEditAction() { return GridCellEditAction.SINGLE_CLICK; } UndefinedExpressionCell(final ListSelectorView.Presenter listSelector,
                                   final TranslationService translationService); @Override Optional<Editor> getEditor(); @Override GridCellEditAction getSupportedEditAction();  }### Answer:
@Test public void testSupportedEditAction() { assertThat(cell.getSupportedEditAction()).isEqualTo(GridCellEditAction.SINGLE_CLICK); }