assertEquals((long) x, at.longValue());
    }
  }

  /** floatValue returns current value. */
  public void testFloatValue() {
    AtomicDouble at = new AtomicDouble();
    assertEquals(0.0f, at.floatValue());
    for (double x : VALUES) {
      at.set(x);
      assertEquals((float) x, at.floatValue());
    }
  }

  /** doubleValue returns current value. */
  public void testDoubleValue() {

### Key Constants

```java
// Field names (FieldNames.java)
TEXT, READING_PREFIX, QUERY_FREQ, DOC_FREQ, USER_BOOST, KINDS, TIMESTAMP

// Default values
MAX_READING_NUM = 10
PREFIX_MATCH_WEIGHT = 2.0f
EXPECTED_INDEX_COUNT = 1

// Default timeouts
searchTimeout: 15s
indexTimeout: 1m
bulkTimeout: 1m
```

### Common Workflows

**Index Lifecycle:**
```java

            if (!doc.containsKey(indexFieldClickCount)) {
                doc.put(indexFieldClickCount, 0L);
            }
            if (!doc.containsKey(indexFieldBoost)) {
                doc.put(indexFieldBoost, 1.0f);
            }
            if (!doc.containsKey(indexFieldRole)) {
                doc.put(indexFieldRole, guestRoleList);
            }
            if (!doc.containsKey(indexFieldLastModified)) {

            if (isWebCrawlingPath(configPath)) {
                // web
                final WebConfig wConfig = new WebConfig();
                wConfig.setAvailable(Constants.T);
                wConfig.setBoost(1.0f);
                wConfig.setCreatedBy(username);
                wConfig.setCreatedTime(now);
                if (form.depth != null) {
                    wConfig.setDepth(form.depth);
                }

        assertEquals(BoostQuery.class, query.getClass());
        assertEquals("_default:fess", ((BoostQuery) query).getQuery().toString());
        assertEquals(10.0f, ((BoostQuery) query).getBoost());

        query = queryParser.createDefaultFilterChain().parse("\"fess\"");
        assertEquals(TermQuery.class, query.getClass());

                        elevateWord.setReading(reading);
                        elevateWord.setPermissions(permissions);
                        elevateWord.setBoost(StringUtil.isBlank(boost) ? 1.0f : Float.parseFloat(boost));
                        elevateWord.setCreatedBy(Constants.SYSTEM_USER);
                        elevateWord.setCreatedTime(now);
                        elevateWordBhv.insert(elevateWord);

        includedDocUrls = fessConfig.getCrawlerDocumentHtmlDefaultIncludeSearchPatterns();
        excludedDocUrls = fessConfig.getCrawlerDocumentHtmlDefaultExcludeSearchPatterns();
        boost = 1.0f;
        if (StringUtil.isBlank(userAgent)) {
            userAgent = fessConfig.getUserAgentName();
        }
        numOfThread = Constants.DEFAULT_NUM_OF_THREAD_FOR_WEB;

    assertFalse(isInteger.apply(2.0f));
    assertFalse(isInteger.apply(""));
    assertFalse(isInteger.apply(null));
  }

  @GwtIncompatible // Predicates.instanceOf
  public void testIsInstanceOf_subclass() {
    Predicate<@Nullable Object> isNumber = Predicates.instanceOf(Number.class);

    assertTrue(isNumber.apply(1));
    assertTrue(isNumber.apply(2.0f));
    assertFalse(isNumber.apply(""));

                    webConfig = new WebConfig();
                    webConfig.setName("Default");
                    webConfig.setAvailable(true);
                    webConfig.setBoost(1.0f);
                    webConfig.setConfigParameter(StringUtil.EMPTY);
                    webConfig.setIntervalTime(1000);
                    webConfig.setNumOfThread(3);
                    webConfig.setSortOrder(1);

    protected transient volatile Map<ConfigName, Map<String, String>> configParameterMap;

    protected CrawlerClientFactory crawlerClientFactory = null;

    public WebConfig() {
        setBoost(1.0f);
    }

    @Override
    public String getDocumentBoost() {
        return getBoost().toString();
    }

    @Override
    public String getIndexingTarget(final String input) {