preauthIntegrityHash = new byte[64];
        Arrays.fill(preauthIntegrityHash, (byte) 0xBB);
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create digest for SMB 2.0.2 with HmacSHA256")
        void testConstructorSmb202() throws GeneralSecurityException {

        assertFalse(transport.isSMB2());
    }

    @Test
    @DisplayName("Digest setter/getter roundtrip")
    void digestRoundtrip() {
        SMBSigningDigest dg = mock(SMBSigningDigest.class);
        transport.setDigest(dg);
        assertSame(dg, transport.getDigest());
    }

    @Test
    @DisplayName("Context accessor returns constructor-provided context")
    void contextAccessor() {

    }

    @Test
    @DisplayName("Should correctly inherit from ServerMessageBlock2Request")
    void testInheritance() {
        // Then
        assertTrue(request instanceof ServerMessageBlock2Request);
        assertTrue(request instanceof ServerMessageBlock2);
    }

    @Test
    @DisplayName("Should handle different previous session IDs")

    }

    @Nested
    @DisplayName("Edge case values")
    class EdgeCases {

        @Test
        @DisplayName("Null name is allowed via mock")
        void nullName() {
            FileEntry mock = mock(FileEntry.class);
            when(mock.getName()).thenReturn(null);
            assertNull(mock.getName());
        }

        @Test
        @DisplayName("Negative length is allowed via mock")

    @Test
    @DisplayName("getTransport returns mocked transport")
    void getTransport_happy() {
        when(session.getTransport()).thenReturn(transport);
        assertSame(transport, session.getTransport());
        verify(session).getTransport();
    }

    // Happy path: connect to logon share completes without exception
    @Test
    @DisplayName("treeConnectLogon performs call without exception")

    }

    private UpgradeOptions createDefaultOptions() {
        return TestUtils.createDefaultOptions();
    }

    @Nested
    @DisplayName("Applicability")
    class ApplicabilityTests {

        @Test
        @DisplayName("should be applicable when --infer option is true")
        void shouldBeApplicableWhenInferOptionTrue() {
            UpgradeOptions options = mock(UpgradeOptions.class);

    }

    @Test
    @DisplayName("Test singleton instance")
    void testSingletonInstance() {
        SecurityAuditLogger logger1 = SecurityAuditLogger.getInstance();
        SecurityAuditLogger logger2 = SecurityAuditLogger.getInstance();
        assertSame(logger1, logger2, "SecurityAuditLogger should be a singleton");
    }

    @Test
    @DisplayName("Test log authentication success")

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

import jcifs.CIFSException;
import jcifs.DialectVersion;
import jcifs.internal.smb2.nego.EncryptionNegotiateContext;
import jcifs.util.SecureKeyManager;

/**
 * Test class for Smb2EncryptionContext.
 * Tests the available public API methods of the encryption context.
 */
@DisplayName("Smb2EncryptionContext Tests")

    }

    @Test
    @DisplayName("Constructor should handle null parent")
    void testConstructor_NullParent_ThrowsNPE() {
        // When & Then: Null parent should cause NullPointerException
        assertThrows(NullPointerException.class, () -> new NetServerEnumIterator(null, treeHandle, "*", 0, null));
    }

    @Test
    @DisplayName("Constructor should handle null tree handle")

    }

    @Test
    @DisplayName("connectLogon accepts null context but still invokes")
    void connectLogon_withNull_isInvoked() throws Exception {
        // Act
        tree.connectLogon(null);

        // Assert - even null should be passed through to implementation
        verify(tree).connectLogon(null);
    }

    @Test
    @DisplayName("connectLogon propagates SmbException from implementation")