assertTrue(resp instanceof ServerMessageBlock2);
    }

    @Test
    @DisplayName("Should return correct OVERHEAD constant value")
    void testOverheadConstant() {
        // Then
        assertEquals(Smb2Constants.SMB2_HEADER_LENGTH + 16, Smb2ReadResponse.OVERHEAD);
    }

    @Test
    @DisplayName("Should initially have zero data length")
    void testInitialDataLength() {
        // Then

import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInstance;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.Mockito;

import java.io.IOException;
import java.lang.reflect.Field;
import java.net.UnknownHostException;
import java.util.List;
import java.util.Map;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.Mock;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;

/**
 * Test class for CloseableIterator interface functionality
 */
@DisplayName("CloseableIterator Tests")
class CloseableIteratorTest extends BaseTest {

    @Mock
    private CloseableIterator<SmbResource> mockIterator;

    @Test
    @DisplayName("Should define close method")

/**
 * Unit tests for the {@link UpgradeResult} class.
 * Tests result creation, merging, and status determination.
 */
@DisplayName("UpgradeResult")
class UpgradeResultTest {

    @Nested
    @DisplayName("Result Creation")
    class ResultCreationTests {

        @Test
        @DisplayName("should create empty result")
        void shouldCreateEmptyResult() {
            UpgradeResult result = UpgradeResult.empty();

import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.EnumSource;

        }

        @Test
        @DisplayName("Should extend ServerMessageBlock2Response")
        void testInheritance() {
            assertTrue(echoResponse instanceof ServerMessageBlock2Response);
        }
    }

    @Nested
    @DisplayName("Write Bytes Wire Format Tests")
    class WriteBytesWireFormatTests {

        @Test
        @DisplayName("Should return 0 for writeBytesWireFormat")

     */
    @Test
    @DisplayName("Encode with null buffer throws NullPointerException")
    public void testEncodeNullBuffer() throws NdrException {
        NdrHyper hyper = new NdrHyper(5L);
        assertThrows(NullPointerException.class, () -> hyper.encode(null));
    }

    /**
     * Ensure decode throws NPE when passed a null buffer.
     */
    @Test

    }

    private UpgradeContext createMockContext() {
        return TestUtils.createMockContext();
    }

    @Nested
    @DisplayName("Modification Behavior")
    class ModificationBehaviorTests {

        @Test
        @DisplayName("should not save modifications to disk")
        void shouldNotSaveModificationsToDisk() {

 */
@DisplayName("CIFSUnsupportedCryptoException Tests")
class CIFSUnsupportedCryptoExceptionTest extends BaseTest {

    private static final String CRYPTO_ERROR_MESSAGE = "Unsupported cryptographic algorithm: AES-256-GCM";
    private static final String ALGORITHM_NAME = "AES-256-GCM";

    @Test
    @DisplayName("Default constructor should create exception with null message and cause")