@Test
        @DisplayName("readn should throw IOException when buffer too short")
        void shouldThrowWhenBufferTooShort() {
            InputStream is = new ByteArrayInputStream("test".getBytes());
            assertThrows(IOException.class, () -> Transport.readn(is, new byte[5], 0, 10));
        }

        @Test
        @DisplayName("readn should return 0 when no more bytes available")

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);
        mockContext = mock(CIFSContext.class);
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65536);
        when(mockConfig.getListSize()).thenReturn(65536);

        testFileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            testFileId[i] = (byte) i;

            ACE directAce = mock(ACE.class);
            when(inheritedAce.isInherited()).thenReturn(true);
            when(directAce.isInherited()).thenReturn(false);

            assertTrue(inheritedAce.isInherited());
            assertFalse(directAce.isInherited());
            verify(inheritedAce).isInherited();
            verify(directAce).isInherited();
        }

        @Test

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.when;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

    }

    @Test
    void testWrapMethodThrowsDcerpcException() throws DcerpcException {
        // Configure the mock to throw DcerpcException when wrap is called
        doThrow(new DcerpcException("Test wrap exception")).when(dcerpcSecurityProvider).wrap(mockNdrBuffer);

        // Assert that calling wrap throws DcerpcException

     * implementation.
     */
    @Test
    @DisplayName("verify getters return stubbed values")
    void testGettersHappyPath() {
        when(mockAllocInfo.getCapacity()).thenReturn(1000L);
        when(mockAllocInfo.getFree()).thenReturn(400L);

        assertEquals(1000L, mockAllocInfo.getCapacity(), "capacity should match stubbed value");

    void testWriteAndXWireFormatWithNonAndXCommand() {
        when(mockConfig.isUseBatching()).thenReturn(true);
        when(mockAndxCommand.getCommand()).thenReturn(0x42);
        when(mockAndxCommand.writeParameterWordsWireFormat(any(byte[].class), anyInt())).thenReturn(10);
        when(mockAndxCommand.writeBytesWireFormat(any(byte[].class), anyInt())).thenReturn(20);

    }

    @Test
    @DisplayName("Test complete wire format writing")
    void testCompleteWireFormatWriting() {
        when(mockFileInfo.getFileInformationLevel()).thenReturn((byte) FileInformation.FILE_BASIC_INFO);
        when(mockFileInfo.encode(any(byte[].class), anyInt())).thenReturn(50);

        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, mockFileInfo);

        System.arraycopy(outputBuffer, 0, expectedData, 0, testData.length);
        assertArrayEquals(testData, expectedData);
    }

    @Test
    void testReadDataWireFormatExceedsBuffer() {
        // Test when data length exceeds outputBuffer size
        byte[] buffer = new byte[2000];
        int dataLen = outputBuffer.length + 100; // Exceeds outputBuffer size

        SMBProtocolDecodingException exception =

        assertEquals((byte) 0xFF, buf[1], "AndX command should be 0xFF when no chaining");
        assertEquals((byte) 0x00, buf[2], "Reserved byte must be 0");
        assertEquals((byte) 0xDE, buf[3], "Sentinel low offset when no chaining");
        assertEquals((byte) 0xDE, buf[4], "Sentinel high offset when no chaining");
        assertNull(block.andx, "andx should be cleared when not chaining");
    }

    @Test