@Test
public void visitSortOptionWithSingleSortOption() {

    // prepare
    final SortOption sortOption = SearchModelFactory.newSortOption(POINTER_1, SortOptionEntry.SortOrder.ASC);
    // test
    visitor.visitAll(Collections.singletonList(sortOption));
    // verify
    verify(exprFactoryMock).sortBy(POINTER_1.toString());
    verify(qbMock).sort(
            Collections.singletonList(new org.eclipse.ditto.model.query.SortOption(exprMock,
                    SortDirection.ASC)));
}