// NdrShort masks to 0xFF (8 bits) in its constructor
        int expected = input & 0xFF;
        assertEquals(expected, ns.value, "value should be masked to 0xFF before storing");
    }

    /**
     * Round-trip encode/decode for a selection of representative values.
     */
    @ParameterizedTest
    @ValueSource(ints = { 0, 42, 255, -1, 128 })
    void encodeDecodeRoundTrip(int original) throws Exception {

import jcifs.smb1.dcerpc.ndr.NdrBuffer;
import jcifs.smb1.dcerpc.ndr.NdrException;

/**
 * Unit tests for {@link DcerpcMessage}. The tests exercise flag handling,
 * result extraction, header encoding/decoding, and the round-trip of an
 * encode/decode operation.
 */
public class DcerpcMessageTest {

    /**
     * A trivial concrete subclass used for testing. It simply writes a
     * single small value in {@code encode_in} and reads it in

        FileBasicInfo decoded = new FileBasicInfo();
        decoded.decode(buffer, startIndex, 36); // decode only reads 36 bytes

        // Verify the values match after round-trip
        assertEquals(TEST_CREATE_TIME, decoded.getCreateTime());
        assertEquals(TEST_LAST_ACCESS_TIME, decoded.getLastAccessTime());
        assertEquals(TEST_LAST_WRITE_TIME, decoded.getLastWriteTime());

        // Reset and verify
        messageBlock.reset();
        verify(messageBlock).reset();
    }

    @Test
    @DisplayName("Test encode and decode round trip")
    void testEncodeDecodeRoundTrip() throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[512];
        int encodeIndex = 0;
        int decodeIndex = 0;

        assertEquals(8, bytesRead);
        assertTrue(fileInfo.toString().contains("endOfFile=" + expectedValue));
    }

    @Test
    @DisplayName("Test encode and decode round trip")
    void testEncodeDecodeRoundTrip() throws SMBProtocolDecodingException {
        // Test various values
        long[] testValues = { 0L, 1L, -1L, Long.MAX_VALUE, Long.MIN_VALUE, 0x123456789ABCDEFL };

        assertEquals(0, SMBUtil.readInt2(encoded, 2), "EOL length should be 0");
    }

    /**
     * Test round-trip encoding and decoding
     */
    @Test
    @DisplayName("Round-trip encode and decode should preserve data")
    void testRoundTrip() throws CIFSException {
        List<AvPair> originalPairs = new LinkedList<>();

    public void reset() {
        log.info("[{}] Manually resetting circuit breaker to CLOSED", name);
        transitionTo(State.CLOSED);
    }

    /**
     * Manually trip the circuit breaker to open state
     */
    public void trip() {
        log.info("[{}] Manually tripping circuit breaker to OPEN", name);
        transitionTo(State.OPEN);
    }

    /**

        }
    }

    @Nested
    @DisplayName("Integration Tests")
    class IntegrationTests {

        @Test
        @DisplayName("Should sign and verify round trip for SMB 2.0.2")
        void testSignAndVerifyRoundTripSmb202() throws GeneralSecurityException {
            Smb2SigningDigest digest1 = new Smb2SigningDigest(sessionKey, Smb2Constants.SMB2_DIALECT_0202, null);

        void testTextualConstructorNull() {
            assertThrows(NullPointerException.class, () -> new SID((String) null));
        }

        @Test
        @DisplayName("Binary constructor happy path and round-trip via toByteArray")
        void testBinaryConstructorAndToByteArray() {
            // Arrange: revision=1, count=2, identAuth zeros except last byte, subauth 10, 20
            byte[] ident = new byte[] { 0, 0, 0, 0, 0, 5 };

        HandleGuid guid2 = new HandleGuid();
        
        assertNotEquals(guid1, guid2);
        assertEquals(16, guid1.toBytes().length);
        
        // Test round-trip
        HandleGuid guid3 = new HandleGuid(guid1.toBytes());
        assertEquals(guid1, guid3);
    }
    
    @Test
    public void testHandleInfoExpiration() {
        HandleInfo info = new HandleInfo(