AtomicDoubleArray aa = new AtomicDoubleArray(VALUES);
    assertEquals(Arrays.toString(VALUES), aa.toString());
    assertEquals("[]", new AtomicDoubleArray(0).toString());
    assertEquals("[]", new AtomicDoubleArray(new double[0]).toString());
  }

  /** compareAndSet treats +0.0 and -0.0 as distinct values */
  public void testDistinctZeros() {
    AtomicDoubleArray aa = new AtomicDoubleArray(SIZE);

        assertEquals("^test.*", parser.appendFileterPath(new StringBuilder(), "^test"));
        assertEquals("^test$", parser.appendFileterPath(new StringBuilder(), "^test$"));
        assertEquals(".*test$", parser.appendFileterPath(new StringBuilder(), "test$"));
        assertEquals(".*test/\\E.*", parser.appendFileterPath(new StringBuilder(), "test/\\E"));
        assertEquals("test", parser.appendFileterPath(new StringBuilder(), "test"));
    }

    testSortDescending(new byte[] {}, 0, 0, new byte[] {});
    testSortDescending(new byte[] {1}, 0, 1, new byte[] {1});
    testSortDescending(new byte[] {1, 2}, 0, 2, new byte[] {2, 1});
    testSortDescending(new byte[] {1, 3, 1}, 0, 2, new byte[] {3, 1, 1});
    testSortDescending(new byte[] {1, 3, 1}, 0, 1, new byte[] {1, 3, 1});
    testSortDescending(new byte[] {-1, -2, 1, 2}, 1, 3, new byte[] {-1, 1, -2, 2});
  }

            }
        };

        callback.store(new DataStoreParams(), new HashMap<>());
        assertEquals(1L, callback.getDocumentSize());
    }

    public void test_commit_behavior() {
        // Test commit behavior with state tracking
        final AtomicInteger commitCount = new AtomicInteger(0);
        final AtomicLong documentsBeforeCommit = new AtomicLong(0);

        return total;
      }
    },
    NEW {
      @Override
      long copy(Readable from, Appendable to) throws IOException {
        return CharStreams.copy(from, to);
      }
    };

    abstract long copy(Readable from, Appendable to) throws IOException;
  }

  enum TargetSupplier {
    STRING_WRITER {
      @Override
      Appendable get(int sz) {
        return new StringWriter(sz);
      }
    },

        return () -> new LineIterator(reader);
    }

    /**
     * Constructs an instance.
     *
     * @param reader
     *            The {@link Reader} to read strings from. Must not be {@literal null}.
     */
    public LineIterator(final Reader reader) {
        assertArgumentNotNull("reader", reader);
        this.reader = new BufferedReader(reader);
    }

    /**

        RoleTypeCQ cq = new RoleTypeCQ();
        if (queryLambda != null) {
            queryLambda.callback(cq);
        }
        FilterAggregationBuilder builder = regFilterA(name, cq.getQuery());
        if (opLambda != null) {
            opLambda.callback(builder);
        }
        if (aggsLambda != null) {
            RoleTypeCA ca = new RoleTypeCA();
            aggsLambda.callback(ca);

    AbstractFuture<String> future = new AbstractFuture<String>() {};
    WaiterThread waiter = new WaiterThread(future);
    waiter.start();
    waiter.awaitWaiting();
    PollingThread poller = new PollingThread(future);
    poller.start();
    PollingThread poller2 = new PollingThread(future);
    poller2.start();
    PollingThread poller3 = new PollingThread(future);
    poller3.start();

        // Test with different types of causes
        DataStoreException withIOException = new DataStoreException("IO Error", new java.io.IOException("File not found"));
        DataStoreException withNPE = new DataStoreException("NPE Error", new NullPointerException("Null value"));
        DataStoreException withCustom = new DataStoreException("Custom Error", new FessSystemException("System error"));

    StringBuilder builder2 = new StringBuilder();
    copied = CharStreams.copy(new StringReader(I18N), builder2);
    assertEquals(I18N, builder2.toString());
    assertEquals(I18N.length(), copied);
  }

  public void testCopy_toStringBuilder_fromReadable() throws IOException {
    StringBuilder builder = new StringBuilder();
    long copied = CharStreams.copy(wrapAsGenericReadable(new StringReader(ASCII)), builder);