@Test
public void testNoLabelCandidates() {

  LingoClusteringAlgorithm algorithm = algorithm();
  algorithm.queryHint.set("test");
  Stream<Document> documents =
      Stream.of(new TestDocument("test"), new TestDocument("test"), new TestDocument("test"));
  List<Cluster<Document>> clusters =
      algorithm.cluster(documents, CachedLangComponents.loadCached("English"));
  Assertions.assertThat(clusters).isEmpty();
}