assertNotNull("Search alias should exist after switch", aliasResponse.getAliases());
        assertTrue("Search alias should point to at least one index", aliasResponse.getAliases().size() >= 1);

        // Cleanup
        try {
            client.admin().indices().prepareDelete(suggester.getIndex() + "*").execute().actionGet();
        } catch (Exception e) {

        Stream.of(response.getIndices()).filter(s -> {
            if (!isSuggestIndex(s)) {
                return false;
            }
            final List<AliasMetadata> list = response.getAliases().get(s);
            if (list == null) {
                return true;
            }
            return list.isEmpty();
        }).forEach(s -> {
            if (logger.isInfoEnabled()) {