void testValidShareNames(String share) {
        assertDoesNotThrow(() -> InputValidator.validateShareName(share));
    }

    @Test
    @DisplayName("Test port validation")
    void testPortValidation() {
        assertDoesNotThrow(() -> InputValidator.validatePort(445));
        assertDoesNotThrow(() -> InputValidator.validatePort(139));
        assertDoesNotThrow(() -> InputValidator.validatePort(1));

package jcifs;

import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.Iterator;

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

package jcifs;

import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

        void testSetPadding() {
            assertDoesNotThrow(() -> request.setPadding((byte) 0));
            assertDoesNotThrow(() -> request.setPadding((byte) 1));
            assertDoesNotThrow(() -> request.setPadding((byte) 0xFF));
        }

        @Test
        @DisplayName("Should set read flags correctly")
        void testSetReadFlags() {
            assertDoesNotThrow(() -> request.setReadFlags((byte) 0));

            assertDoesNotThrow(() -> request.setFileId(shortFileId));
            assertDoesNotThrow(() -> request.setFileId(standardFileId));
            assertDoesNotThrow(() -> request.setFileId(longFileId));
        }

        @Test
        @DisplayName("Should handle unspecified file ID")
        void testUnspecifiedFileId() {

            assertDoesNotThrow(() -> mockReferralData.fixupDomain(domain));

            // Test with concrete implementation - default constructor has null server
            // fixupDomain requires non-null server, so we test with initialized instance
            DfsReferralDataImpl impl = createInitializedDfsReferralDataImpl();
            assertDoesNotThrow(() -> impl.fixupDomain(domain));
        }

    @DisplayName("Should handle null message gracefully")
    void testNullMessage() {
        // When/Then
        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException((String) null);
            assertNull(exception.getMessage());
        });

        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException(null, new RuntimeException());

        // All sizes should be accepted without exception
        assertDoesNotThrow(() -> request.setFileId(shortFileId), "Should handle 8-byte file ID");
        assertDoesNotThrow(() -> request.setFileId(standardFileId), "Should handle 16-byte file ID");
        assertDoesNotThrow(() -> request.setFileId(longFileId), "Should handle 32-byte file ID");
    }

    @Test

    void testVariousFilenameFormats() {
        // Test UNC path
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "\\\\server\\share"));

        // Test forward slashes
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "//server/share"));

        // Test with spaces
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, "\\\\server\\my share\\file.txt"));

        assertDoesNotThrow(() -> sidResolver.resolveSids(mockContext, testServerName, testSids, 0, 3));
    }

    @Test
    void testResolveSidsWithOffsetAndLength_SingleElement() throws CIFSException {
        doNothing().when(sidResolver).resolveSids(any(CIFSContext.class), anyString(), any(SID[].class), eq(2), eq(1));