}

    @Test
    public void test_ProtectedConstructor() throws Exception {
        // ## Test that protected constructor can be accessed via reflection ##

        // ## Act ##
        final Constructor<Curl> constructor = Curl.class.getDeclaredConstructor();
        constructor.setAccessible(true);
        final Curl instance = constructor.newInstance();

   * can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getPutAllNullKeyUnsupportedMethod() {
    return getMethod(MapPutAllTester.class, "testPutAll_nullKeyUnsupported");
  }

    }

    /**
     * Test that the constant-time comparison method is actually used internally.
     */
    @Test
    public void testConstantTimeMethodExists() throws Exception {
        // Use reflection to verify the constant-time method exists
        Method constantTimeMethod = NtlmPasswordAuthenticator.class.getDeclaredMethod("constantTimeEquals", char[].class, char[].class);

        when(tree.isSMB2()).thenReturn(false);
        when(tree.getConfig()).thenReturn(config);
        when(config.getPid()).thenReturn(1234);

        // Stub send to populate the provided response instance via reflection
        Mockito.doAnswer(inv -> {
            Object resp = inv.getArgument(1);
            // Set private fields: status on SmbComTransactionResponse and available on TransPeekNamedPipeResponse

        Smb2CloseRequest request = new Smb2CloseRequest(mockConfig, emptyFileId);

        // When
        request.setFileId(testFileId);

        // Then - verify through internal state (would need getter or reflection in real scenario)
        // Since we can't directly verify the internal state, we create a new request to test
        Smb2CloseRequest newRequest = new Smb2CloseRequest(mockConfig, testFileId);

        // When
        smbComRename = new SmbComRename(config, oldFileName, newFileName);

        // Then
        assertEquals(ServerMessageBlock.SMB_COM_RENAME, smbComRename.getCommand());

        // Use reflection to verify private fields
        Field oldFileNameField = SmbComRename.class.getDeclaredField("oldFileName");
        oldFileNameField.setAccessible(true);
        assertEquals(oldFileName, oldFileNameField.get(smbComRename));

        // Restore system properties and clean up static state
        System.setProperties(originalSystemProperties);
        resetHandlerState();
    }

    /**
     * Resets the static state of the Handler class using reflection.
     * This is crucial for ensuring that tests are isolated from each other.
     */
    private void resetHandlerState() throws Exception {
        // Reset the static factory field

        buffer.putShort((short) 0); // AceCount
        buffer.putShort((short) 0); // Padding

        return buffer.array();
    }

    /**
     * Helper method to set error code using reflection
     */
    private void setErrorCode(NtTransQuerySecurityDescResponse response, int errorCode) throws Exception {
        // Navigate through the inheritance hierarchy to find the errorCode field

     * @throws CIFSException
     */
    private void setupMocksForAuth() throws Exception {
        // This is a simplified way to get a transport context into the servlet.
        // A more robust solution might involve reflection or modifying the servlet for testability.
        try {
            java.lang.reflect.Field transportContextField = NtlmServlet.class.getDeclaredField("transportContext");
            transportContextField.setAccessible(true);

        assertTrue(result.startsWith("TransCallNamedPipeResponse["));
        assertTrue(result.endsWith("]"));
    }

    @Test
    void testGetResponseLength() throws Exception {
        // Use reflection to set dataCount
        Field dataCountField = SmbComTransactionResponse.class.getDeclaredField("dataCount");
        dataCountField.setAccessible(true);
        dataCountField.setInt(response, 42);