if err == nil {
		t.Fatalf("should returns error but got nil")
	}
}

func TestReturningWithNullToZeroValues(t *testing.T) {
	dialect := DB.Dialector.Name()
	switch dialect {
	case "mysql", "sqlserver":
		// these dialects do not support the "returning" clause
		return
	default:
		// This user struct will leverage the existing users table, but override
		// the Name field to default to null.

- **SMB 3.1.1**: Windows 10/Server 2016+ (0x0311) - AES-128-GCM + Pre-Auth Integrity

**Protocol Selection:**
- Default Range: SMB1 to SMB 3.1.1
- Automatic Negotiation: Client offers all supported dialects, server selects highest common version
- Configurable: Min/max versions can be set via configuration properties

### SMB3 Encryption Support
- **SMB2 Transform Header**: Encrypted message wrapping

    private final boolean smb2;
    private final int dialect;

    /**
     *
     */
    DialectVersion() {
        this.smb2 = false;
        this.dialect = -1;
    }

    DialectVersion(final int dialectId) {
        this.smb2 = true;
        this.dialect = dialectId;
    }

    /**
     * Check if this is an SMB2 dialect version
     *
     * @return the smb2
     */

    }

    @Test
    @DisplayName("Test all dialect versions")
    void testAllDialectVersions() {
        // Test each dialect version
        DialectVersion[] dialects = { DialectVersion.SMB1, DialectVersion.SMB202, DialectVersion.SMB210, DialectVersion.SMB300,
                DialectVersion.SMB302, DialectVersion.SMB311 };

        for (DialectVersion dialect : dialects) {

            assertThrows(SmbUnsupportedOperationException.class, () -> transport.calculatePreauthHash(new byte[] { 1 }, 0, 1, null));
        }

        @Test
        @DisplayName("calculatePreauthHash rejects dialects before SMB 3.1.1")
        void preauthHash_rejectsOldDialect() {
            setField(transport, "smb2", true);
            Smb2NegotiateResponse nego = new Smb2NegotiateResponse(cfg);
            // selectedDialect: SMB300

	if DB.DryRun {
		t.Fatal("Failed expect DB.DryRun to be false")
	}

	if DB.Dialector.Name() == "sqlserver" {
		t.Skip("Skip SQL Server for this test, because it too difference with other dialects.")
	}

	date, _ := time.ParseInLocation("2006-01-02", "2021-10-18", time.Local)

	// find
	sql := DB.ToSQL(func(tx *gorm.DB) *gorm.DB {

        @DisplayName("Should throw exception for invalid dialects")
        void testConstructorInvalidDialects(int dialect) {
            IllegalArgumentException exception =
                    assertThrows(IllegalArgumentException.class, () -> new Smb2SigningDigest(sessionKey, dialect, null));
            assertEquals("Unknown dialect", exception.getMessage());
        }
    }

    @Nested

     */
    public int getSecurityMode() {
        return this.securityMode;
    }

    /**
     * Gets the negotiated SMB dialect
     *
     * @return the SMB dialect negotiated with the server
     */
    public int getDialect() {
        return this.dialect;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override

    private volatile boolean closed = false;

    /**
     * Constructs a SMB2 signing digest with the specified session key and dialect
     *
     * @param sessionKey
     *            the session key for signing
     * @param dialect
     *            the SMB2 dialect version
     * @param preauthIntegrityHash
     *            the pre-authentication integrity hash (for SMB 3.1.1)
     * @throws GeneralSecurityException

        // Set security mode (2 bytes)
        int testSecurityMode = 0x0003;
        SMBUtil.writeInt2(testSecurityMode, buffer, bufferIndex + 20);

        // Set dialect (2 bytes)
        int testDialect = 0x0311;
        SMBUtil.writeInt2(testDialect, buffer, bufferIndex + 22);

        // Execute decode
        int bytesDecoded = response.decode(buffer, bufferIndex, 24);