final String json = "{\"type\":\"heartbeat\",\"instanceId\":\"test\",\"createdTime\":12345}";
        final Map<String, Object> result = coordinatorHelper.parseJson(json);
        assertEquals("heartbeat", result.get("type"));
        assertEquals("test", result.get("instanceId"));
        assertEquals(12345, result.get("createdTime"));
    }

    @Test
    public void test_parseJson_empty() {

        source.put("boost", 1.5);
        source.put("content_length", 12345);

        final String html = new HtmlIndexExportFormatter().format(source, Collections.emptySet());

        assertTrue(html.contains("<meta name=\"fess:boost\" content=\"1.5\">"));
        assertTrue(html.contains("<meta name=\"fess:content_length\" content=\"12345\">"));
    }

    @Test

    Iterator<Integer> iterator = singleton(0).iterator();
    assertEquals(1, Iterators.size(iterator));
  }

  public void testSize_partiallyConsumed() {
    Iterator<Integer> iterator = asList(1, 2, 3, 4, 5).iterator();
    iterator.next();
    iterator.next();
    assertEquals(3, Iterators.size(iterator));
  }

  public void test_contains_nonnull_yes() {

    Iterator<Integer> iterator = singleton(0).iterator();
    assertEquals(1, Iterators.size(iterator));
  }

  public void testSize_partiallyConsumed() {
    Iterator<Integer> iterator = asList(1, 2, 3, 4, 5).iterator();
    iterator.next();
    iterator.next();
    assertEquals(3, Iterators.size(iterator));
  }

  public void test_contains_nonnull_yes() {