assertTrue(validator.isValid(null, context));
    }

    public void test_isValid_blankValue() {
        final ConstraintValidatorContext context = null;
        assertTrue(validator.isValid(" ", context));
        assertTrue(validator.isValid("   ", context));
        assertTrue(validator.isValid("\t", context));
        assertTrue(validator.isValid("\n", context));
    }

     */
    @Test
    public void testReleaseBufferValidation() {
        // Given - Various invalid buffers
        byte[] nullBuffer = null;
        byte[] wrongSizeBuffer = new byte[100]; // Wrong size
        byte[] correctBuffer = new byte[SmbComTransaction.TRANSACTION_BUF_SIZE];

        // When/Then - Should handle invalid buffers gracefully
        assertDoesNotThrow(() -> {

        props.setProperty("jcifs.smb.client.useRDMA", "invalid");
        props.setProperty("jcifs.smb.client.rdmaReadWriteThreshold", "invalid");
        props.setProperty("jcifs.smb.client.rdmaMaxSendSize", "invalid");
        props.setProperty("jcifs.smb.client.rdmaMaxReceiveSize", "invalid");
        props.setProperty("jcifs.smb.client.rdmaCredits", "invalid");

        PropertyConfiguration config = new PropertyConfiguration(props);

        // Test blank string (should be valid)
        bean.setCronExpression("   ");
        violations = validator.validate(bean);
        assertTrue(violations.isEmpty());
    }

    // Test validation with invalid cron expressions
    public void test_invalidCronExpressions() {
        TestBean bean = new TestBean();

        // Test invalid cron expression
        bean.setCronExpression("invalid");

    int NT_STATUS_NOT_IMPLEMENTED = 0xC0000002;
    /** The specified information class is invalid */
    int NT_STATUS_INVALID_INFO_CLASS = 0xC0000003;
    /** Invalid access to memory location */
    int NT_STATUS_ACCESS_VIOLATION = 0xC0000005;
    /** The handle is invalid */
    int NT_STATUS_INVALID_HANDLE = 0xC0000008;
    /** The parameter is incorrect */

		},
		{bucketName: "a", objName: "obj", PartID: 1, expectedError: fmt.Errorf("%s", "Bucket name invalid: a")},
		// Test case - 5.
		// Case with invalid object names.
		{bucketName: bucket, PartID: 1, expectedError: fmt.Errorf("%s", "Object name invalid: minio-bucket/")},
		// Test case - 6.
		// Valid object and bucket names but non-existent bucket.

            } catch (NumberFormatException e) {
                // Invalid value ignored
            }
        }

        value = props.getProperty("jcifs.smb.client.soTimeout");
        if (value != null) {
            try {
                this.smbSocketTimeout = Integer.parseInt(value);
            } catch (NumberFormatException e) {
                // Invalid value ignored
            }
        }

			if op == policyCondStartsWith && !startsWithSupported {
				return fmt.Errorf("Invalid according to Policy: Policy Condition failed")
			}
			// Check if current policy condition is satisfied
			if !checkPolicyCond(op, formValues.Get(formCanonicalName), policy.Value) {
				return fmt.Errorf("Invalid according to Policy: Policy Condition failed")
			}

            log.warn("Invalid SMB protocol ID: 0x{}", Integer.toHexString(protocolId));
            throw new SmbException("Invalid SMB protocol identifier");
        }

        // Validate command is in valid range
        if (command < 0 || command > 255) {
            failedValidations.incrementAndGet();
            throw new SmbException("Invalid command code: " + command);
        }
    }

            throw new IllegalArgumentException("Username contains invalid characters: " + username);
        }
    }

    /**
     * Validates domain name
     *
     * @param domain the domain to validate
     * @throws IllegalArgumentException if domain is invalid
     */
    public static void validateDomain(String domain) {
        if (domain == null) {