HashingOutputStream out = new HashingOutputStream(sha512(), buffer);

    out.write(buf);

    assertEquals(expectedHash, out.hash());
  }

  public void testChecksForNull() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicInstanceMethods(
        new HashingOutputStream(sha512(), new ByteArrayOutputStream()));

                    }
                }
                if (field == null) {
                    throw new NoSuchFieldException(fieldName);
                }
                field.setAccessible(true);
                field.set(this, value);
            } catch (Exception e) {
                throw new RuntimeException("Failed to set field " + fieldName, e);
            }
        }

        return df.format(new Date());
    }

    @Test
    void gregorianCalendarIsUsed() {
        String dateBefore = gregorianDate();

        RemoteSnapshotMetadata metadata =
                new RemoteSnapshotMetadata(new DefaultArtifact("a:b:1-SNAPSHOT"), new Date(), null);
        metadata.merge(new Metadata());

        String dateAfter = gregorianDate();

        final Map<String, Object> doc1 = new HashMap<>();
        doc1.put("title", "Installation Guide");
        doc1.put("url", "http://example.com/install");
        msg.addSource(new ChatSource(1, doc1));
        final Map<String, Object> doc2 = new HashMap<>();
        doc2.put("title", "Quick Start");
        doc2.put("url", "http://example.com/start");
        msg.addSource(new ChatSource(2, doc2));

        SmbCircuitBreaker backpressureCircuitBreaker = new SmbCircuitBreaker("backpressure-test", 5, 2, 1000, 3, false, true, 2);

        try {
            CountDownLatch startLatch = new CountDownLatch(1);
            CountDownLatch completeLatch = new CountDownLatch(5);
            AtomicInteger rejectedCount = new AtomicInteger(0);
            AtomicInteger successCount = new AtomicInteger(0);

        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
    }

    @Test
    public void test_constructor_withCause() {
        // Test constructor with cause only
        Throwable cause = new IllegalArgumentException("Cause exception");
        FessSystemException exception = new FessSystemException(cause);

    }

    @Test
    public void test_addSourceWithNullSources() {
        final ChatMessage message = new ChatMessage();
        message.setSources(null);

        final ChatSource source = new ChatSource();
        source.setTitle("New Source");

        message.addSource(source);

        assertNotNull(message.getSources());
        assertEquals(1, message.getSources().size());

        byte[] buffer = new byte[256];
        int bytesWritten = response.writeBytesWireFormat(buffer, 0);

        assertEquals(0, bytesWritten);
    }

    @Test
    void testToString() {
        // Test toString method
        response = new SmbComQueryInformationResponse(mockConfig, 0L);

        // Set test values

      return new Class<?>[length];
    }

    @Override
    public Impl[] createValueArray(int length) {
      return new Impl[length];
    }

    @Override
    public SampleElements<Entry<Class<?>, Impl>> samples() {
      return new SampleElements<>(
          immutableEntry(One.class, new Impl(1)),
          immutableEntry(Two.class, new Impl(2)),

    MockWebServer server = new MockWebServer();
    server.useHttps(sslContext.getSocketFactory(), false);
    server.setDispatcher(this);
    server.start(port);
  }

  @Override public MockResponse dispatch(RecordedRequest request) {
    String path = request.getPath();
    try {
      if (!path.startsWith("/") || path.contains("..")) throw new FileNotFoundException();