@Test
    public void testGetString_withStringValue() {
        Map<String, Object> map = new HashMap<>();
        map.put("key", "value");

        assertEquals("value", MapValueExtractor.getString(map, "key"));
    }

    @Test
    public void testGetString_withNullValue() {
        Map<String, Object> map = new HashMap<>();
        map.put("key", null);

        assertNull(MapValueExtractor.getString(map, "key"));

                    public @Nullable String[] foo(String bar) { return new String[] {bar, null}; }
                }
            """,
            v2 = """
                public class Source {
                    public final String[] finalField = new String[] {"bar"};
                    public String[] foo(String bar) { return new String[] {bar}; }
                }

    super.setUp();

    emptyAccumulator = new StatsAccumulator();

    emptyAccumulatorByAddAllEmptyIterable = new StatsAccumulator();
    emptyAccumulatorByAddAllEmptyIterable.addAll(ImmutableList.<Double>of());

    emptyAccumulatorByAddAllEmptyStats = new StatsAccumulator();
    emptyAccumulatorByAddAllEmptyStats.addAll(Stats.of());

    oneValueAccumulator = new StatsAccumulator();
    oneValueAccumulator.add(ONE_VALUE);

        mockAuth.password = "testpass";

        when(mockAuth.getAnsiHash(any(byte[].class))).thenReturn(new byte[24]);
        when(mockAuth.getUnicodeHash(any(byte[].class))).thenReturn(new byte[24]);
        when(mockAuth.getName()).thenReturn("testuser");
        when(mockAuth.getDomain()).thenReturn("TESTDOMAIN");

        setupAndX = new SmbComSessionSetupAndX(mockSession, mockAndx, mockAuth);
    }

    @Test
    void testConstructor() {

  /** Generator of new random hash codes */
  static final Random rng = new Random();

  /** Number of CPUS, to place bound on table size */
  static final int NCPU = Runtime.getRuntime().availableProcessors();

  /** Table of cells. When non-null, size is a power of 2. */
  transient volatile Cell @Nullable [] cells;

  /**

public class Crc32cHashFunctionTest extends TestCase {
  public void testEmpty() {
    assertCrc(0, new byte[0]);
  }

  public void testZeros() {
    // Test 32 byte array of 0x00.
    byte[] zeros = new byte[32];
    assertCrc(0x8a9136aa, zeros);
  }

  public void testZeros100() {
    // Test 100 byte array of 0x00.
    byte[] zeros = new byte[100];
    assertCrc(0x07cb9ff6, zeros);
  }

  public void testFull() {

        final StemmerOverrideItem stemmerOverrideItem1 = new StemmerOverrideItem(1, "aaa", "a");

        assertTrue(stemmerOverrideItem1.equals(stemmerOverrideItem1));
        assertTrue(stemmerOverrideItem1.equals(new StemmerOverrideItem(1, "aaa", "a")));
        assertTrue(stemmerOverrideItem1.equals(new StemmerOverrideItem(2, "aaa", "a")));
        assertFalse(stemmerOverrideItem1.equals(new StemmerOverrideItem(1, "aaa", "b")));

    @Test
    public void test_multipleCreatorInstances() {
        FessConfig config = new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;
        };

        FessMailDeliveryDepartmentCreator creator1 = new FessMailDeliveryDepartmentCreator(config);
        FessMailDeliveryDepartmentCreator creator2 = new FessMailDeliveryDepartmentCreator(config);

        assertNotNull(creator1);

        String lastUpdated;

        if (metadata.getVersioning() == null) {
            DateFormat utcDateFormatter = new SimpleDateFormat(DEFAULT_SNAPSHOT_TIMESTAMP_FORMAT);
            utcDateFormatter.setCalendar(new GregorianCalendar());
            utcDateFormatter.setTimeZone(DEFAULT_SNAPSHOT_TIME_ZONE);

            snapshot = new Snapshot();
            snapshot.setBuildNumber(buildNumber != null ? buildNumber : getBuildNumber(recessive) + 1);

    AtomicBoolean interruptedExceptionThrown = new AtomicBoolean();
    CountDownLatch enterLatch = new CountDownLatch(1);
    CountDownLatch exitLatch = new CountDownLatch(1);
    TrustedListenableFutureTask<Integer> task =
        TrustedListenableFutureTask.create(
            () -> {
              enterLatch.countDown();
              try {
                new CountDownLatch(1).await(); // wait forever