assertEquals(negativeLength, SMBUtil.readInt4(buffer, startIndex + 16));
        }

        @ParameterizedTest
        @DisplayName("Should encode at various buffer positions")
        @ValueSource(ints = { 0, 1, 10, 50, 70 })
        void testEncodeAtDifferentPositions(int position) {
            // Given
            byte[] largeBuffer = new byte[200];
            long sourceOffset = 12345L;

        }
    }

    @Nested
    @DisplayName("Context Flags Tests")
    class ContextFlagsTests {

        @ParameterizedTest
        @ValueSource(ints = { NegTokenInit.DELEGATION, NegTokenInit.MUTUAL_AUTHENTICATION, NegTokenInit.REPLAY_DETECTION,
                NegTokenInit.SEQUENCE_CHECKING, NegTokenInit.ANONYMITY, NegTokenInit.CONFIDENTIALITY, NegTokenInit.INTEGRITY })

            tail[padLen + i] = (byte) (count * 8 >>> 8 * i);
        }

        engineUpdate(tail, 0, tail.length);

        final byte[] result = new byte[16];
        // cast this MD4's context (array of 4 ints) into an array of 16 bytes.
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                result[i * 4 + j] = (byte) (context[i] >>> 8 * j);
            }
        }

        assertEquals(0x08, ace.getFlags());
        assertEquals(0x00000001, ace.getAccessMask());
    }

    @ParameterizedTest
    @DisplayName("Test various access mask values")
    @ValueSource(ints = { 0x00000001, // FILE_READ_DATA
            0x00000002, // FILE_WRITE_DATA
            0x00000004, // FILE_APPEND_DATA
            0x00010000, // DELETE
            0x00020000, // READ_CONTROL

                    "Should throw configured exception");
        }

        @ParameterizedTest
        @ValueSource(ints = { 1, 10, 50, 100, 255 })
        @DisplayName("Should handle various data lengths")
        void testVariousDataLengths(int length) throws SMBProtocolDecodingException {

            assertEquals("Expected structureSize = 4", exception.getMessage());
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 1, 2, 3, 5, 6, 8, 16, 100, 255, 1024, 4096, 65535 })
        @DisplayName("Should throw exception for various invalid structure sizes")
        void testReadBytesWireFormatVariousInvalidSizes(int invalidSize) {

        byte[] buffer = new byte[256];
        int result = request.readBytesWireFormat(buffer, 0);

        assertEquals(0, result);
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 10, 50, 100 })
    @DisplayName("writeBytesWireFormat should work at different offsets")
    void testWriteBytesWireFormatAtDifferentOffsets(int offset) {
        byte[] buffer = new byte[512];

        Object namesObj = namesField.get(lookupSids);

        assertNotNull(namesObj);
        assertTrue(namesObj instanceof lsarpc.LsarTransNameArray);
    }

    @ParameterizedTest
    @ValueSource(ints = { 1, 5, 10, 20, 50 })
    void constructor_shouldHandleVariousSidArraySizes(int size) {
        // Arrange
        testSids = new jcifs.SID[size];
        for (int i = 0; i < size; i++) {

        // Assert
        assertNotNull(transPeekNamedPipe);
        assertNull(transPeekNamedPipe.name);
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, -1, Integer.MAX_VALUE, Integer.MIN_VALUE, 0xFFFF })
    @DisplayName("Constructor should handle various FID values")
    void testConstructorWithVariousFids(int fid) {
        // Act

        // Verify fail counts incremented
        assertEquals(1, pool.failCounts.get("10.0.0.1"));
        assertEquals(1, pool.failCounts.get("10.0.0.2"));
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, -1 })
    @DisplayName("Should default to port 445 when port <= 0")
    void testDefaultPort(int invalidPort) throws Exception {
        // Given: Create a new pool for this test to ensure isolation