@Test
  public void testProcessDocument() {
    ContextExtractor extractor = new TopicModelContextExtractor();
    MockWordsi wordsi = new MockWordsi(null, extractor);

    String text = "foxes.n.123 1 1.0 5 2.0 2 4.0 3 4.5 4 0.0 0 0.0";

    extractor.processDocument(new BufferedReader(new StringReader(text)), wordsi);
    assertEquals(6, extractor.getVectorLength());
  }