private SmbTransportImpl transport;

    @BeforeEach
    void setUp() throws Exception {
        when(context.getConfig()).thenReturn(config);
        when(config.isSigningEnforced()).thenReturn(false);
        when(config.getSessionTimeout()).thenReturn(30_000);
        when(config.getResponseTimeout()).thenReturn(5_000);
        when(address.getHostAddress()).thenReturn("127.0.0.1");

        // When
        PropertyConfiguration testConfig = new PropertyConfiguration(props);

        // Then
        assertTrue(testConfig.isSigningEnforced());
        assertTrue(testConfig.isSigningEnabled());
        assertFalse(testConfig.isEncryptionEnabled());
    }

    @Test
    @DisplayName("Should handle invalid property values gracefully")

        assertEquals("", response.getServerData().oemDomainName);
    }

    @Test
    public void testIsValid() {
        SmbNegotiationRequest request = mock(SmbNegotiationRequest.class);
        when(request.isSigningEnforced()).thenReturn(true);
        response.getServerData().signaturesEnabled = true;

        assertTrue(response.isValid(mockContext, request));
        assertTrue(response.isSigningNegotiated());

    }

    @Test
    @DisplayName("Test security configuration getters")
    void testSecurityConfigurationGetters() {
        assertFalse(config.isSigningEnabled());
        assertFalse(config.isSigningEnforced());
        assertTrue(config.isIpcSigningEnforced());
        assertFalse(config.isEncryptionEnabled());
        assertFalse(config.isForceExtendedSecurity());
    }

    @Test

        setPrivateField(response, "maxWriteSize", 65536);
        setPrivateField(response, "maxTransactSize", 65536);

        // Setup valid request
        when(mockRequest.isSigningEnforced()).thenReturn(false);
        when(mockRequest.getCapabilities()).thenReturn(Smb2Constants.SMB2_GLOBAL_CAP_DFS);
        when(mockRequest.getNegotiateContexts())

        // Default config values
        when(config.getLocalAddr()).thenReturn(null);
        when(config.getLocalPort()).thenReturn(0);
        when(config.getSessionLimit()).thenReturn(10);
        when(config.isSigningEnforced()).thenReturn(false);
        when(config.isIpcSigningEnforced()).thenReturn(true);
        when(config.getLogonShare()).thenReturn("IPC$");

        // Default address values

    }

    boolean isSignatureSetupRequired() throws SmbException {
        SMBSigningDigest cur = getDigest();
        if (cur != null) {
            return false;
        }
        if (this.transport.isSigningEnforced()) {
            return true;
        }
        return this.transport.getNegotiateResponse().isSigningNegotiated();
    }

    /**
     * @param digest
     *            the digest to set

    @Override
    public boolean isValid(final CIFSContext tc, final SmbNegotiationRequest req) {
        if (!isReceived() || getStatus() != 0) {
            return false;
        }

        if (req.isSigningEnforced() && !isSigningEnabled()) {
            log.debug("Signing is enforced but server does not allow it");
            return false;
        }

        if (getDialectRevision() == Smb2Constants.SMB2_DIALECT_ANY) {