AEM Unit Test for a component that uses a Service returning a list of paths based on a Query

Hi

I need to write a Unit Test for an AEM component that uses a service that returns a list of paths based on a Query. 

How do I write a Unit Test for such a method.

getBlogItemsForPaths(someService.findPages(filter), resource, blogContext);

 the someService returns a list of paths:

public List<String> someService(@Nonnull BlogArticleFilter filter) {
    if (filter.getTagList().isEmpty()) {
        return Collections.emptyList();
    }

    final String pathQuery = buildDesendantNodeString(filter.getPathList());
    final String tagQuery = buildTagQuery(filter);
    final String query = String.format(QUERY, pathQuery, Constants.TemplateType.BLOG_ARTICLE_PAGE.getTemplatePath(), tagQuery);

    return resourceResolverUsageService.withServiceUserResourceResolver(ServiceUser.CONTENT_READER, resolver -> {
        return StreamUtil.iteratorStream(resolver.findResources(query, Query.JCR_SQL2))
                .sorted(Comparator.comparing(this::getDate, Comparator.reverseOrder()))
                .map(Resource::getPath)
                .filter(s -> !filter.getIgnoreList().contains(s))
                .limit(filter.getMaxItems())
                .collect(Collectors.toList());
    });
}