Algolia search Deadlock [Android]

I am trying to make searchAsync from algolia in a Junit test, but the search results is not coming back DeadLock here is my code:

    final Index index = AlgoClient.initIndex("contacts");

    Query query = new Query();

    query.setHitsPerPage(100);

    CountDownLatch signal = new CountDownLatch(1);

    index.searchAsync(query, new CompletionHandler() {

        @Override
        public void requestCompleted(JSONObject content, AlgoliaException e) {

           signal.countDown();
        });

    signal.await();